2760 lines
115 KiB
C
2760 lines
115 KiB
C
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/* Target macros for the FRV port of GCC.
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Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
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Free Software Foundation, Inc.
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Contributed by Red Hat Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef __FRV_H__
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#define __FRV_H__
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/* Frv general purpose macros. */
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/* Align an address. */
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#define ADDR_ALIGN(addr,align) (((addr) + (align) - 1) & ~((align) - 1))
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/* Return true if a value is inside a range. */
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#define IN_RANGE_P(VALUE, LOW, HIGH) \
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( (((HOST_WIDE_INT)(VALUE)) >= (HOST_WIDE_INT)(LOW)) \
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&& (((HOST_WIDE_INT)(VALUE)) <= ((HOST_WIDE_INT)(HIGH))))
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/* Driver configuration. */
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/* A C expression which determines whether the option `-CHAR' takes arguments.
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The value should be the number of arguments that option takes-zero, for many
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options.
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By default, this macro is defined to handle the standard options properly.
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You need not define it unless you wish to add additional options which take
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arguments.
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Defined in svr4.h. */
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#undef SWITCH_TAKES_ARG
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#define SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G')
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/* A C expression which determines whether the option `-NAME' takes arguments.
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The value should be the number of arguments that option takes-zero, for many
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options. This macro rather than `SWITCH_TAKES_ARG' is used for
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multi-character option names.
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By default, this macro is defined as `DEFAULT_WORD_SWITCH_TAKES_ARG', which
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handles the standard options properly. You need not define
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`WORD_SWITCH_TAKES_ARG' unless you wish to add additional options which take
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arguments. Any redefinition should call `DEFAULT_WORD_SWITCH_TAKES_ARG' and
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then check for additional options.
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Defined in svr4.h. */
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#undef WORD_SWITCH_TAKES_ARG
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/* -fpic and -fPIC used to imply the -mlibrary-pic multilib, but with
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FDPIC which multilib to use depends on whether FDPIC is in use or
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not. The trick we use is to introduce -multilib-library-pic as a
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pseudo-flag that selects the library-pic multilib, and map fpic
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and fPIC to it only if fdpic is not selected. Also, if fdpic is
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selected and no PIC/PIE options are present, we imply -fPIE.
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Otherwise, if -fpic or -fPIC are enabled and we're optimizing for
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speed, or if we have -On with n>=3, enable inlining of PLTs. As
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for -mgprel-ro, we want to enable it by default, but not for -fpic or
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-fpie. */
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#define DRIVER_SELF_SPECS SUBTARGET_DRIVER_SELF_SPECS \
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"%{mno-pack:\
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%{!mhard-float:-msoft-float}\
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%{!mmedia:-mno-media}}\
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%{!mfdpic:%{fpic|fPIC: -multilib-library-pic}}\
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%{mfdpic:%{!fpic:%{!fpie:%{!fPIC:%{!fPIE:\
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%{!fno-pic:%{!fno-pie:%{!fno-PIC:%{!fno-PIE:-fPIE}}}}}}}} \
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%{!mno-inline-plt:%{O*:%{!O0:%{!Os:%{fpic|fPIC:-minline-plt} \
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%{!fpic:%{!fPIC:%{!O:%{!O1:%{!O2:-minline-plt}}}}}}}}} \
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%{!mno-gprel-ro:%{!fpic:%{!fpie:-mgprel-ro}}}} \
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"
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#ifndef SUBTARGET_DRIVER_SELF_SPECS
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# define SUBTARGET_DRIVER_SELF_SPECS
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#endif
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/* A C string constant that tells the GCC driver program options to pass to
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the assembler. It can also specify how to translate options you give to GNU
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CC into options for GCC to pass to the assembler. See the file `sun3.h'
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for an example of this.
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Do not define this macro if it does not need to do anything.
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Defined in svr4.h. */
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#undef ASM_SPEC
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#define ASM_SPEC "\
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%{G*} %{v} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
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%{mtomcat-stats} \
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%{!mno-eflags: \
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%{mcpu=*} \
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%{mgpr-*} %{mfpr-*} \
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%{msoft-float} %{mhard-float} \
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%{mdword} %{mno-dword} \
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%{mdouble} %{mno-double} \
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%{mmedia} %{mno-media} \
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%{mmuladd} %{mno-muladd} \
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%{mpack} %{mno-pack} \
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%{mno-fdpic:-mnopic} %{mfdpic} \
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%{fpic|fpie: -mpic} %{fPIC|fPIE: -mPIC} %{mlibrary-pic}}"
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/* Another C string constant used much like `LINK_SPEC'. The difference
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between the two is that `STARTFILE_SPEC' is used at the very beginning of
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the command given to the linker.
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If this macro is not defined, a default is provided that loads the standard
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C startup file from the usual place. See `gcc.c'.
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Defined in svr4.h. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "crt0%O%s frvbegin%O%s"
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/* Another C string constant used much like `LINK_SPEC'. The difference
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between the two is that `ENDFILE_SPEC' is used at the very end of the
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command given to the linker.
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Do not define this macro if it does not need to do anything.
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Defined in svr4.h. */
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "frvend%O%s"
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#define MASK_DEFAULT_FRV \
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(MASK_MEDIA \
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| MASK_DOUBLE \
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| MASK_MULADD \
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| MASK_DWORD \
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| MASK_PACK)
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#define MASK_DEFAULT_FR500 \
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(MASK_MEDIA | MASK_DWORD | MASK_PACK)
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#define MASK_DEFAULT_FR550 \
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(MASK_MEDIA | MASK_DWORD | MASK_PACK)
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#define MASK_DEFAULT_FR450 \
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(MASK_GPR_32 \
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| MASK_FPR_32 \
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| MASK_MEDIA \
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| MASK_SOFT_FLOAT \
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| MASK_DWORD \
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| MASK_PACK)
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#define MASK_DEFAULT_FR400 \
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(MASK_GPR_32 \
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| MASK_FPR_32 \
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| MASK_MEDIA \
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| MASK_ACC_4 \
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| MASK_SOFT_FLOAT \
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| MASK_DWORD \
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| MASK_PACK)
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#define MASK_DEFAULT_SIMPLE \
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(MASK_GPR_32 | MASK_SOFT_FLOAT)
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/* A C string constant that tells the GCC driver program options to pass to
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`cc1'. It can also specify how to translate options you give to GCC into
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options for GCC to pass to the `cc1'.
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Do not define this macro if it does not need to do anything. */
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/* For ABI compliance, we need to put bss data into the normal data section. */
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#define CC1_SPEC "%{G*}"
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/* A C string constant that tells the GCC driver program options to pass to
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the linker. It can also specify how to translate options you give to GCC
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into options for GCC to pass to the linker.
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Do not define this macro if it does not need to do anything.
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Defined in svr4.h. */
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/* Override the svr4.h version with one that dispenses without the svr4
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shared library options, notably -G. */
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#undef LINK_SPEC
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#define LINK_SPEC "\
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%{h*} %{v:-V} \
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%{b} \
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%{mfdpic:-melf32frvfd -z text} \
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%{static:-dn -Bstatic} \
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%{shared:-Bdynamic} \
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%{symbolic:-Bsymbolic} \
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%{G*} \
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%{YP,*} \
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%{Qy:} %{!Qn:-Qy}"
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/* Another C string constant used much like `LINK_SPEC'. The difference
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between the two is that `LIB_SPEC' is used at the end of the command given
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to the linker.
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If this macro is not defined, a default is provided that loads the standard
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C library from the usual place. See `gcc.c'.
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Defined in svr4.h. */
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#undef LIB_SPEC
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#define LIB_SPEC "--start-group -lc -lsim --end-group"
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#ifndef CPU_TYPE
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#define CPU_TYPE FRV_CPU_FR500
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#endif
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/* Run-time target specifications */
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#define TARGET_CPU_CPP_BUILTINS() \
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do \
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{ \
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int issue_rate; \
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\
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builtin_define ("__frv__"); \
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builtin_assert ("machine=frv"); \
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\
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issue_rate = frv_issue_rate (); \
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if (issue_rate > 1) \
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builtin_define_with_int_value ("__FRV_VLIW__", issue_rate); \
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builtin_define_with_int_value ("__FRV_GPR__", NUM_GPRS); \
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builtin_define_with_int_value ("__FRV_FPR__", NUM_FPRS); \
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builtin_define_with_int_value ("__FRV_ACC__", NUM_ACCS); \
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\
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switch (frv_cpu_type) \
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{ \
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case FRV_CPU_GENERIC: \
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builtin_define ("__CPU_GENERIC__"); \
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break; \
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case FRV_CPU_FR550: \
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builtin_define ("__CPU_FR550__"); \
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break; \
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case FRV_CPU_FR500: \
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case FRV_CPU_TOMCAT: \
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builtin_define ("__CPU_FR500__"); \
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break; \
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case FRV_CPU_FR450: \
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builtin_define ("__CPU_FR450__"); \
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break; \
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case FRV_CPU_FR405: \
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builtin_define ("__CPU_FR405__"); \
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break; \
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case FRV_CPU_FR400: \
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builtin_define ("__CPU_FR400__"); \
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break; \
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case FRV_CPU_FR300: \
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case FRV_CPU_SIMPLE: \
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builtin_define ("__CPU_FR300__"); \
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break; \
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} \
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\
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if (TARGET_HARD_FLOAT) \
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builtin_define ("__FRV_HARD_FLOAT__"); \
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if (TARGET_DWORD) \
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builtin_define ("__FRV_DWORD__"); \
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if (TARGET_FDPIC) \
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builtin_define ("__FRV_FDPIC__"); \
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if (flag_leading_underscore > 0) \
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builtin_define ("__FRV_UNDERSCORE__"); \
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} \
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while (0)
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#define TARGET_HAS_FPRS (TARGET_HARD_FLOAT || TARGET_MEDIA)
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#define NUM_GPRS (TARGET_GPR_32? 32 : 64)
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#define NUM_FPRS (!TARGET_HAS_FPRS? 0 : TARGET_FPR_32? 32 : 64)
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#define NUM_ACCS (!TARGET_MEDIA? 0 : TARGET_ACC_4? 4 : 8)
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/* X is a valid accumulator number if (X & ACC_MASK) == X. */
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#define ACC_MASK \
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(!TARGET_MEDIA ? 0 \
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: TARGET_ACC_4 ? 3 \
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: frv_cpu_type == FRV_CPU_FR450 ? 11 \
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: 7)
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/* Macros to identify the blend of media instructions available. Revision 1
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is the one found on the FR500. Revision 2 includes the changes made for
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the FR400.
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Treat the generic processor as a revision 1 machine for now, for
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compatibility with earlier releases. */
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#define TARGET_MEDIA_REV1 \
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(TARGET_MEDIA \
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&& (frv_cpu_type == FRV_CPU_GENERIC \
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|| frv_cpu_type == FRV_CPU_FR500))
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#define TARGET_MEDIA_REV2 \
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(TARGET_MEDIA \
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&& (frv_cpu_type == FRV_CPU_FR400 \
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|| frv_cpu_type == FRV_CPU_FR405 \
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|| frv_cpu_type == FRV_CPU_FR450 \
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|| frv_cpu_type == FRV_CPU_FR550))
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#define TARGET_MEDIA_FR450 \
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(frv_cpu_type == FRV_CPU_FR450)
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#define TARGET_FR500_FR550_BUILTINS \
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(frv_cpu_type == FRV_CPU_FR500 \
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|| frv_cpu_type == FRV_CPU_FR550)
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|||
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#define TARGET_FR405_BUILTINS \
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(frv_cpu_type == FRV_CPU_FR405 \
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|| frv_cpu_type == FRV_CPU_FR450)
|
|||
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|
|||
|
#ifndef HAVE_AS_TLS
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#define HAVE_AS_TLS 0
|
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#endif
|
|||
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|
|||
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/* This macro is a C statement to print on `stderr' a string describing the
|
|||
|
particular machine description choice. Every machine description should
|
|||
|
define `TARGET_VERSION'. For example:
|
|||
|
|
|||
|
#ifdef MOTOROLA
|
|||
|
#define TARGET_VERSION \
|
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fprintf (stderr, " (68k, Motorola syntax)");
|
|||
|
#else
|
|||
|
#define TARGET_VERSION \
|
|||
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fprintf (stderr, " (68k, MIT syntax)");
|
|||
|
#endif */
|
|||
|
#define TARGET_VERSION fprintf (stderr, _(" (frv)"))
|
|||
|
|
|||
|
/* Sometimes certain combinations of command options do not make sense on a
|
|||
|
particular target machine. You can define a macro `OVERRIDE_OPTIONS' to
|
|||
|
take account of this. This macro, if defined, is executed once just after
|
|||
|
all the command options have been parsed.
|
|||
|
|
|||
|
Don't use this macro to turn on various extra optimizations for `-O'. That
|
|||
|
is what `OPTIMIZATION_OPTIONS' is for. */
|
|||
|
|
|||
|
#define OVERRIDE_OPTIONS frv_override_options ()
|
|||
|
|
|||
|
/* Some machines may desire to change what optimizations are performed for
|
|||
|
various optimization levels. This macro, if defined, is executed once just
|
|||
|
after the optimization level is determined and before the remainder of the
|
|||
|
command options have been parsed. Values set in this macro are used as the
|
|||
|
default values for the other command line options.
|
|||
|
|
|||
|
LEVEL is the optimization level specified; 2 if `-O2' is specified, 1 if
|
|||
|
`-O' is specified, and 0 if neither is specified.
|
|||
|
|
|||
|
SIZE is nonzero if `-Os' is specified, 0 otherwise.
|
|||
|
|
|||
|
You should not use this macro to change options that are not
|
|||
|
machine-specific. These should uniformly selected by the same optimization
|
|||
|
level on all supported machines. Use this macro to enable machine-specific
|
|||
|
optimizations.
|
|||
|
|
|||
|
*Do not examine `write_symbols' in this macro!* The debugging options are
|
|||
|
*not supposed to alter the generated code. */
|
|||
|
#define OPTIMIZATION_OPTIONS(LEVEL,SIZE) frv_optimization_options (LEVEL, SIZE)
|
|||
|
|
|||
|
|
|||
|
/* Define this macro if debugging can be performed even without a frame
|
|||
|
pointer. If this macro is defined, GCC will turn on the
|
|||
|
`-fomit-frame-pointer' option whenever `-O' is specified. */
|
|||
|
/* Frv needs a specific frame layout that includes the frame pointer. */
|
|||
|
|
|||
|
#define CAN_DEBUG_WITHOUT_FP
|
|||
|
|
|||
|
#define LABEL_ALIGN_AFTER_BARRIER(LABEL) (TARGET_ALIGN_LABELS ? 3 : 0)
|
|||
|
|
|||
|
/* Small Data Area Support. */
|
|||
|
/* Maximum size of variables that go in .sdata/.sbss.
|
|||
|
The -msdata=foo switch also controls how small variables are handled. */
|
|||
|
#ifndef SDATA_DEFAULT_SIZE
|
|||
|
#define SDATA_DEFAULT_SIZE 8
|
|||
|
#endif
|
|||
|
|
|||
|
|
|||
|
/* Storage Layout */
|
|||
|
|
|||
|
/* Define this macro to have the value 1 if the most significant bit in a byte
|
|||
|
has the lowest number; otherwise define it to have the value zero. This
|
|||
|
means that bit-field instructions count from the most significant bit. If
|
|||
|
the machine has no bit-field instructions, then this must still be defined,
|
|||
|
but it doesn't matter which value it is defined to. This macro need not be
|
|||
|
a constant.
|
|||
|
|
|||
|
This macro does not affect the way structure fields are packed into bytes or
|
|||
|
words; that is controlled by `BYTES_BIG_ENDIAN'. */
|
|||
|
#define BITS_BIG_ENDIAN 1
|
|||
|
|
|||
|
/* Define this macro to have the value 1 if the most significant byte in a word
|
|||
|
has the lowest number. This macro need not be a constant. */
|
|||
|
#define BYTES_BIG_ENDIAN 1
|
|||
|
|
|||
|
/* Define this macro to have the value 1 if, in a multiword object, the most
|
|||
|
significant word has the lowest number. This applies to both memory
|
|||
|
locations and registers; GCC fundamentally assumes that the order of
|
|||
|
words in memory is the same as the order in registers. This macro need not
|
|||
|
be a constant. */
|
|||
|
#define WORDS_BIG_ENDIAN 1
|
|||
|
|
|||
|
/* Number of storage units in a word; normally 4. */
|
|||
|
#define UNITS_PER_WORD 4
|
|||
|
|
|||
|
/* A macro to update MODE and UNSIGNEDP when an object whose type is TYPE and
|
|||
|
which has the specified mode and signedness is to be stored in a register.
|
|||
|
This macro is only called when TYPE is a scalar type.
|
|||
|
|
|||
|
On most RISC machines, which only have operations that operate on a full
|
|||
|
register, define this macro to set M to `word_mode' if M is an integer mode
|
|||
|
narrower than `BITS_PER_WORD'. In most cases, only integer modes should be
|
|||
|
widened because wider-precision floating-point operations are usually more
|
|||
|
expensive than their narrower counterparts.
|
|||
|
|
|||
|
For most machines, the macro definition does not change UNSIGNEDP. However,
|
|||
|
some machines, have instructions that preferentially handle either signed or
|
|||
|
unsigned quantities of certain modes. For example, on the DEC Alpha, 32-bit
|
|||
|
loads from memory and 32-bit add instructions sign-extend the result to 64
|
|||
|
bits. On such machines, set UNSIGNEDP according to which kind of extension
|
|||
|
is more efficient.
|
|||
|
|
|||
|
Do not define this macro if it would never modify MODE. */
|
|||
|
#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
|
|||
|
do \
|
|||
|
{ \
|
|||
|
if (GET_MODE_CLASS (MODE) == MODE_INT \
|
|||
|
&& GET_MODE_SIZE (MODE) < 4) \
|
|||
|
(MODE) = SImode; \
|
|||
|
} \
|
|||
|
while (0)
|
|||
|
|
|||
|
/* Normal alignment required for function parameters on the stack, in bits.
|
|||
|
All stack parameters receive at least this much alignment regardless of data
|
|||
|
type. On most machines, this is the same as the size of an integer. */
|
|||
|
#define PARM_BOUNDARY 32
|
|||
|
|
|||
|
/* Define this macro if you wish to preserve a certain alignment for the stack
|
|||
|
pointer. The definition is a C expression for the desired alignment
|
|||
|
(measured in bits).
|
|||
|
|
|||
|
If `PUSH_ROUNDING' is not defined, the stack will always be aligned to the
|
|||
|
specified boundary. If `PUSH_ROUNDING' is defined and specifies a less
|
|||
|
strict alignment than `STACK_BOUNDARY', the stack may be momentarily
|
|||
|
unaligned while pushing arguments. */
|
|||
|
#define STACK_BOUNDARY 64
|
|||
|
|
|||
|
/* Alignment required for a function entry point, in bits. */
|
|||
|
#define FUNCTION_BOUNDARY 128
|
|||
|
|
|||
|
/* Biggest alignment that any data type can require on this machine,
|
|||
|
in bits. */
|
|||
|
#define BIGGEST_ALIGNMENT 64
|
|||
|
|
|||
|
/* @@@ A hack, needed because libobjc wants to use ADJUST_FIELD_ALIGN for
|
|||
|
some reason. */
|
|||
|
#ifdef IN_TARGET_LIBS
|
|||
|
#define BIGGEST_FIELD_ALIGNMENT 64
|
|||
|
#else
|
|||
|
/* An expression for the alignment of a structure field FIELD if the
|
|||
|
alignment computed in the usual way is COMPUTED. GCC uses this
|
|||
|
value instead of the value in `BIGGEST_ALIGNMENT' or
|
|||
|
`BIGGEST_FIELD_ALIGNMENT', if defined, for structure fields only. */
|
|||
|
#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
|
|||
|
frv_adjust_field_align (FIELD, COMPUTED)
|
|||
|
#endif
|
|||
|
|
|||
|
/* If defined, a C expression to compute the alignment for a static variable.
|
|||
|
TYPE is the data type, and ALIGN is the alignment that the object
|
|||
|
would ordinarily have. The value of this macro is used instead of that
|
|||
|
alignment to align the object.
|
|||
|
|
|||
|
If this macro is not defined, then ALIGN is used.
|
|||
|
|
|||
|
One use of this macro is to increase alignment of medium-size data to make
|
|||
|
it all fit in fewer cache lines. Another is to cause character arrays to be
|
|||
|
word-aligned so that `strcpy' calls that copy constants to character arrays
|
|||
|
can be done inline. */
|
|||
|
#define DATA_ALIGNMENT(TYPE, ALIGN) \
|
|||
|
(TREE_CODE (TYPE) == ARRAY_TYPE \
|
|||
|
&& TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
|
|||
|
&& (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
|
|||
|
|
|||
|
/* If defined, a C expression to compute the alignment given to a constant that
|
|||
|
is being placed in memory. CONSTANT is the constant and ALIGN is the
|
|||
|
alignment that the object would ordinarily have. The value of this macro is
|
|||
|
used instead of that alignment to align the object.
|
|||
|
|
|||
|
If this macro is not defined, then ALIGN is used.
|
|||
|
|
|||
|
The typical use of this macro is to increase alignment for string constants
|
|||
|
to be word aligned so that `strcpy' calls that copy constants can be done
|
|||
|
inline. */
|
|||
|
#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
|
|||
|
(TREE_CODE (EXP) == STRING_CST \
|
|||
|
&& (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
|
|||
|
|
|||
|
/* Define this macro to be the value 1 if instructions will fail to work if
|
|||
|
given data not on the nominal alignment. If instructions will merely go
|
|||
|
slower in that case, define this macro as 0. */
|
|||
|
#define STRICT_ALIGNMENT 1
|
|||
|
|
|||
|
/* Define this if you wish to imitate the way many other C compilers handle
|
|||
|
alignment of bitfields and the structures that contain them.
|
|||
|
|
|||
|
The behavior is that the type written for a bit-field (`int', `short', or
|
|||
|
other integer type) imposes an alignment for the entire structure, as if the
|
|||
|
structure really did contain an ordinary field of that type. In addition,
|
|||
|
the bit-field is placed within the structure so that it would fit within such
|
|||
|
a field, not crossing a boundary for it.
|
|||
|
|
|||
|
Thus, on most machines, a bit-field whose type is written as `int' would not
|
|||
|
cross a four-byte boundary, and would force four-byte alignment for the
|
|||
|
whole structure. (The alignment used may not be four bytes; it is
|
|||
|
controlled by the other alignment parameters.)
|
|||
|
|
|||
|
If the macro is defined, its definition should be a C expression; a nonzero
|
|||
|
value for the expression enables this behavior.
|
|||
|
|
|||
|
Note that if this macro is not defined, or its value is zero, some bitfields
|
|||
|
may cross more than one alignment boundary. The compiler can support such
|
|||
|
references if there are `insv', `extv', and `extzv' insns that can directly
|
|||
|
reference memory.
|
|||
|
|
|||
|
The other known way of making bitfields work is to define
|
|||
|
`STRUCTURE_SIZE_BOUNDARY' as large as `BIGGEST_ALIGNMENT'. Then every
|
|||
|
structure can be accessed with fullwords.
|
|||
|
|
|||
|
Unless the machine has bit-field instructions or you define
|
|||
|
`STRUCTURE_SIZE_BOUNDARY' that way, you must define
|
|||
|
`PCC_BITFIELD_TYPE_MATTERS' to have a nonzero value.
|
|||
|
|
|||
|
If your aim is to make GCC use the same conventions for laying out
|
|||
|
bitfields as are used by another compiler, here is how to investigate what
|
|||
|
the other compiler does. Compile and run this program:
|
|||
|
|
|||
|
struct foo1
|
|||
|
{
|
|||
|
char x;
|
|||
|
char :0;
|
|||
|
char y;
|
|||
|
};
|
|||
|
|
|||
|
struct foo2
|
|||
|
{
|
|||
|
char x;
|
|||
|
int :0;
|
|||
|
char y;
|
|||
|
};
|
|||
|
|
|||
|
main ()
|
|||
|
{
|
|||
|
printf ("Size of foo1 is %d\n",
|
|||
|
sizeof (struct foo1));
|
|||
|
printf ("Size of foo2 is %d\n",
|
|||
|
sizeof (struct foo2));
|
|||
|
exit (0);
|
|||
|
}
|
|||
|
|
|||
|
If this prints 2 and 5, then the compiler's behavior is what you would get
|
|||
|
from `PCC_BITFIELD_TYPE_MATTERS'.
|
|||
|
|
|||
|
Defined in svr4.h. */
|
|||
|
#define PCC_BITFIELD_TYPE_MATTERS 1
|
|||
|
|
|||
|
|
|||
|
/* Layout of Source Language Data Types. */
|
|||
|
|
|||
|
#define CHAR_TYPE_SIZE 8
|
|||
|
#define SHORT_TYPE_SIZE 16
|
|||
|
#define INT_TYPE_SIZE 32
|
|||
|
#define LONG_TYPE_SIZE 32
|
|||
|
#define LONG_LONG_TYPE_SIZE 64
|
|||
|
#define FLOAT_TYPE_SIZE 32
|
|||
|
#define DOUBLE_TYPE_SIZE 64
|
|||
|
#define LONG_DOUBLE_TYPE_SIZE 64
|
|||
|
|
|||
|
/* An expression whose value is 1 or 0, according to whether the type `char'
|
|||
|
should be signed or unsigned by default. The user can always override this
|
|||
|
default with the options `-fsigned-char' and `-funsigned-char'. */
|
|||
|
#define DEFAULT_SIGNED_CHAR 1
|
|||
|
|
|||
|
|
|||
|
/* General purpose registers. */
|
|||
|
#define GPR_FIRST 0 /* First gpr */
|
|||
|
#define GPR_LAST (GPR_FIRST + 63) /* Last gpr */
|
|||
|
#define GPR_R0 GPR_FIRST /* R0, constant 0 */
|
|||
|
#define GPR_FP (GPR_FIRST + 2) /* Frame pointer */
|
|||
|
#define GPR_SP (GPR_FIRST + 1) /* Stack pointer */
|
|||
|
/* small data register */
|
|||
|
#define SDA_BASE_REG ((unsigned)(TARGET_FDPIC ? -1 : flag_pic ? PIC_REGNO : (GPR_FIRST + 16)))
|
|||
|
#define PIC_REGNO (GPR_FIRST + (TARGET_FDPIC?15:17)) /* PIC register. */
|
|||
|
#define FDPIC_FPTR_REGNO (GPR_FIRST + 14) /* uClinux PIC function pointer register. */
|
|||
|
#define FDPIC_REGNO (GPR_FIRST + 15) /* uClinux PIC register. */
|
|||
|
|
|||
|
#define HARD_REGNO_RENAME_OK(from,to) (TARGET_FDPIC ? ((to) != FDPIC_REG) : 1)
|
|||
|
|
|||
|
#define OUR_FDPIC_REG get_hard_reg_initial_val (SImode, FDPIC_REGNO)
|
|||
|
|
|||
|
#define FPR_FIRST 64 /* First FP reg */
|
|||
|
#define FPR_LAST 127 /* Last FP reg */
|
|||
|
|
|||
|
#define GPR_TEMP_NUM frv_condexec_temps /* # gprs to reserve for temps */
|
|||
|
|
|||
|
/* We reserve the last CR and CCR in each category to be used as a reload
|
|||
|
register to reload the CR/CCR registers. This is a kludge. */
|
|||
|
#define CC_FIRST 128 /* First ICC/FCC reg */
|
|||
|
#define CC_LAST 135 /* Last ICC/FCC reg */
|
|||
|
#define ICC_FIRST (CC_FIRST + 4) /* First ICC reg */
|
|||
|
#define ICC_LAST (CC_FIRST + 7) /* Last ICC reg */
|
|||
|
#define ICC_TEMP (CC_FIRST + 7) /* Temporary ICC reg */
|
|||
|
#define FCC_FIRST (CC_FIRST) /* First FCC reg */
|
|||
|
#define FCC_LAST (CC_FIRST + 3) /* Last FCC reg */
|
|||
|
|
|||
|
/* Amount to shift a value to locate a ICC or FCC register in the CCR
|
|||
|
register and shift it to the bottom 4 bits. */
|
|||
|
#define CC_SHIFT_RIGHT(REGNO) (((REGNO) - CC_FIRST) << 2)
|
|||
|
|
|||
|
/* Mask to isolate a single ICC/FCC value. */
|
|||
|
#define CC_MASK 0xf
|
|||
|
|
|||
|
/* Masks to isolate the various bits in an ICC field. */
|
|||
|
#define ICC_MASK_N 0x8 /* negative */
|
|||
|
#define ICC_MASK_Z 0x4 /* zero */
|
|||
|
#define ICC_MASK_V 0x2 /* overflow */
|
|||
|
#define ICC_MASK_C 0x1 /* carry */
|
|||
|
|
|||
|
/* Mask to isolate the N/Z flags in an ICC. */
|
|||
|
#define ICC_MASK_NZ (ICC_MASK_N | ICC_MASK_Z)
|
|||
|
|
|||
|
/* Mask to isolate the Z/C flags in an ICC. */
|
|||
|
#define ICC_MASK_ZC (ICC_MASK_Z | ICC_MASK_C)
|
|||
|
|
|||
|
/* Masks to isolate the various bits in a FCC field. */
|
|||
|
#define FCC_MASK_E 0x8 /* equal */
|
|||
|
#define FCC_MASK_L 0x4 /* less than */
|
|||
|
#define FCC_MASK_G 0x2 /* greater than */
|
|||
|
#define FCC_MASK_U 0x1 /* unordered */
|
|||
|
|
|||
|
/* For CCR registers, the machine wants CR4..CR7 to be used for integer
|
|||
|
code and CR0..CR3 to be used for floating point. */
|
|||
|
#define CR_FIRST 136 /* First CCR */
|
|||
|
#define CR_LAST 143 /* Last CCR */
|
|||
|
#define CR_NUM (CR_LAST-CR_FIRST+1) /* # of CCRs (8) */
|
|||
|
#define ICR_FIRST (CR_FIRST + 4) /* First integer CCR */
|
|||
|
#define ICR_LAST (CR_FIRST + 7) /* Last integer CCR */
|
|||
|
#define ICR_TEMP ICR_LAST /* Temp integer CCR */
|
|||
|
#define FCR_FIRST (CR_FIRST + 0) /* First float CCR */
|
|||
|
#define FCR_LAST (CR_FIRST + 3) /* Last float CCR */
|
|||
|
|
|||
|
/* Amount to shift a value to locate a CR register in the CCCR special purpose
|
|||
|
register and shift it to the bottom 2 bits. */
|
|||
|
#define CR_SHIFT_RIGHT(REGNO) (((REGNO) - CR_FIRST) << 1)
|
|||
|
|
|||
|
/* Mask to isolate a single CR value. */
|
|||
|
#define CR_MASK 0x3
|
|||
|
|
|||
|
#define ACC_FIRST 144 /* First acc register */
|
|||
|
#define ACC_LAST 155 /* Last acc register */
|
|||
|
|
|||
|
#define ACCG_FIRST 156 /* First accg register */
|
|||
|
#define ACCG_LAST 167 /* Last accg register */
|
|||
|
|
|||
|
#define AP_FIRST 168 /* fake argument pointer */
|
|||
|
|
|||
|
#define SPR_FIRST 169
|
|||
|
#define SPR_LAST 172
|
|||
|
#define LR_REGNO (SPR_FIRST)
|
|||
|
#define LCR_REGNO (SPR_FIRST + 1)
|
|||
|
#define IACC_FIRST (SPR_FIRST + 2)
|
|||
|
#define IACC_LAST (SPR_FIRST + 3)
|
|||
|
|
|||
|
#define GPR_P(R) IN_RANGE_P (R, GPR_FIRST, GPR_LAST)
|
|||
|
#define GPR_OR_AP_P(R) (GPR_P (R) || (R) == ARG_POINTER_REGNUM)
|
|||
|
#define FPR_P(R) IN_RANGE_P (R, FPR_FIRST, FPR_LAST)
|
|||
|
#define CC_P(R) IN_RANGE_P (R, CC_FIRST, CC_LAST)
|
|||
|
#define ICC_P(R) IN_RANGE_P (R, ICC_FIRST, ICC_LAST)
|
|||
|
#define FCC_P(R) IN_RANGE_P (R, FCC_FIRST, FCC_LAST)
|
|||
|
#define CR_P(R) IN_RANGE_P (R, CR_FIRST, CR_LAST)
|
|||
|
#define ICR_P(R) IN_RANGE_P (R, ICR_FIRST, ICR_LAST)
|
|||
|
#define FCR_P(R) IN_RANGE_P (R, FCR_FIRST, FCR_LAST)
|
|||
|
#define ACC_P(R) IN_RANGE_P (R, ACC_FIRST, ACC_LAST)
|
|||
|
#define ACCG_P(R) IN_RANGE_P (R, ACCG_FIRST, ACCG_LAST)
|
|||
|
#define SPR_P(R) IN_RANGE_P (R, SPR_FIRST, SPR_LAST)
|
|||
|
|
|||
|
#define GPR_OR_PSEUDO_P(R) (GPR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define FPR_OR_PSEUDO_P(R) (FPR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define GPR_AP_OR_PSEUDO_P(R) (GPR_OR_AP_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define CC_OR_PSEUDO_P(R) (CC_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define ICC_OR_PSEUDO_P(R) (ICC_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define FCC_OR_PSEUDO_P(R) (FCC_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define CR_OR_PSEUDO_P(R) (CR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define ICR_OR_PSEUDO_P(R) (ICR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define FCR_OR_PSEUDO_P(R) (FCR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define ACC_OR_PSEUDO_P(R) (ACC_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
#define ACCG_OR_PSEUDO_P(R) (ACCG_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
|
|||
|
|
|||
|
#define MAX_STACK_IMMEDIATE_OFFSET 2047
|
|||
|
|
|||
|
|
|||
|
/* Register Basics. */
|
|||
|
|
|||
|
/* Number of hardware registers known to the compiler. They receive numbers 0
|
|||
|
through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number
|
|||
|
really is assigned the number `FIRST_PSEUDO_REGISTER'. */
|
|||
|
#define FIRST_PSEUDO_REGISTER (SPR_LAST + 1)
|
|||
|
|
|||
|
/* The first/last register that can contain the arguments to a function. */
|
|||
|
#define FIRST_ARG_REGNUM (GPR_FIRST + 8)
|
|||
|
#define LAST_ARG_REGNUM (FIRST_ARG_REGNUM + FRV_NUM_ARG_REGS - 1)
|
|||
|
|
|||
|
/* Registers used by the exception handling functions. These should be
|
|||
|
registers that are not otherwise used by the calling sequence. */
|
|||
|
#define FIRST_EH_REGNUM 14
|
|||
|
#define LAST_EH_REGNUM 15
|
|||
|
|
|||
|
/* Scratch registers used in the prologue, epilogue and thunks.
|
|||
|
OFFSET_REGNO is for loading constant addends that are too big for a
|
|||
|
single instruction. TEMP_REGNO is used for transferring SPRs to and from
|
|||
|
the stack, and various other activities. */
|
|||
|
#define OFFSET_REGNO 4
|
|||
|
#define TEMP_REGNO 5
|
|||
|
|
|||
|
/* Registers used in the prologue. OLD_SP_REGNO is the old stack pointer,
|
|||
|
which is sometimes used to set up the frame pointer. */
|
|||
|
#define OLD_SP_REGNO 6
|
|||
|
|
|||
|
/* Registers used in the epilogue. STACKADJ_REGNO stores the exception
|
|||
|
handler's stack adjustment. */
|
|||
|
#define STACKADJ_REGNO 6
|
|||
|
|
|||
|
/* Registers used in thunks. JMP_REGNO is used for loading the target
|
|||
|
address. */
|
|||
|
#define JUMP_REGNO 6
|
|||
|
|
|||
|
#define EH_RETURN_DATA_REGNO(N) ((N) <= (LAST_EH_REGNUM - FIRST_EH_REGNUM)? \
|
|||
|
(N) + FIRST_EH_REGNUM : INVALID_REGNUM)
|
|||
|
#define EH_RETURN_STACKADJ_RTX gen_rtx_REG (SImode, STACKADJ_REGNO)
|
|||
|
#define EH_RETURN_HANDLER_RTX RETURN_ADDR_RTX (0, frame_pointer_rtx)
|
|||
|
|
|||
|
#define EPILOGUE_USES(REGNO) ((REGNO) == LR_REGNO)
|
|||
|
|
|||
|
/* An initializer that says which registers are used for fixed purposes all
|
|||
|
throughout the compiled code and are therefore not available for general
|
|||
|
allocation. These would include the stack pointer, the frame pointer
|
|||
|
(except on machines where that can be used as a general register when no
|
|||
|
frame pointer is needed), the program counter on machines where that is
|
|||
|
considered one of the addressable registers, and any other numbered register
|
|||
|
with a standard use.
|
|||
|
|
|||
|
This information is expressed as a sequence of numbers, separated by commas
|
|||
|
and surrounded by braces. The Nth number is 1 if register N is fixed, 0
|
|||
|
otherwise.
|
|||
|
|
|||
|
The table initialized from this macro, and the table initialized by the
|
|||
|
following one, may be overridden at run time either automatically, by the
|
|||
|
actions of the macro `CONDITIONAL_REGISTER_USAGE', or by the user with the
|
|||
|
command options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */
|
|||
|
|
|||
|
/* gr0 -- Hard Zero
|
|||
|
gr1 -- Stack Pointer
|
|||
|
gr2 -- Frame Pointer
|
|||
|
gr3 -- Hidden Parameter
|
|||
|
gr16 -- Small Data reserved
|
|||
|
gr17 -- Pic reserved
|
|||
|
gr28 -- OS reserved
|
|||
|
gr29 -- OS reserved
|
|||
|
gr30 -- OS reserved
|
|||
|
gr31 -- OS reserved
|
|||
|
cr3 -- reserved to reload FCC registers.
|
|||
|
cr7 -- reserved to reload ICC registers. */
|
|||
|
#define FIXED_REGISTERS \
|
|||
|
{ /* Integer Registers */ \
|
|||
|
1, 1, 1, 1, 0, 0, 0, 0, /* 000-007, gr0 - gr7 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 008-015, gr8 - gr15 */ \
|
|||
|
1, 1, 0, 0, 0, 0, 0, 0, /* 016-023, gr16 - gr23 */ \
|
|||
|
0, 0, 0, 0, 1, 1, 1, 1, /* 024-031, gr24 - gr31 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 032-039, gr32 - gr39 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 040-040, gr48 - gr47 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 048-055, gr48 - gr55 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 056-063, gr56 - gr63 */ \
|
|||
|
/* Float Registers */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 064-071, fr0 - fr7 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 072-079, fr8 - fr15 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 080-087, fr16 - fr23 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 088-095, fr24 - fr31 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 096-103, fr32 - fr39 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 104-111, fr48 - fr47 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 112-119, fr48 - fr55 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 120-127, fr56 - fr63 */ \
|
|||
|
/* Condition Code Registers */ \
|
|||
|
0, 0, 0, 0, /* 128-131, fcc0 - fcc3 */ \
|
|||
|
0, 0, 0, 1, /* 132-135, icc0 - icc3 */ \
|
|||
|
/* Conditional execution Registers (CCR) */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 1, /* 136-143, cr0 - cr7 */ \
|
|||
|
/* Accumulators */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 144-151, acc0 - acc7 */ \
|
|||
|
1, 1, 1, 1, /* 152-155, acc8 - acc11 */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 156-163, accg0 - accg7 */ \
|
|||
|
1, 1, 1, 1, /* 164-167, accg8 - accg11 */ \
|
|||
|
/* Other registers */ \
|
|||
|
1, /* 168, AP - fake arg ptr */ \
|
|||
|
1, /* 169, LR - Link register*/ \
|
|||
|
0, /* 170, LCR - Loop count reg*/ \
|
|||
|
1, 1 /* 171-172, iacc0 */ \
|
|||
|
}
|
|||
|
|
|||
|
/* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in
|
|||
|
general) by function calls as well as for fixed registers. This macro
|
|||
|
therefore identifies the registers that are not available for general
|
|||
|
allocation of values that must live across function calls.
|
|||
|
|
|||
|
If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically
|
|||
|
saves it on function entry and restores it on function exit, if the register
|
|||
|
is used within the function. */
|
|||
|
#define CALL_USED_REGISTERS \
|
|||
|
{ /* Integer Registers */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 000-007, gr0 - gr7 */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 008-015, gr8 - gr15 */ \
|
|||
|
1, 1, 0, 0, 0, 0, 0, 0, /* 016-023, gr16 - gr23 */ \
|
|||
|
0, 0, 0, 0, 1, 1, 1, 1, /* 024-031, gr24 - gr31 */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 032-039, gr32 - gr39 */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 040-040, gr48 - gr47 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 048-055, gr48 - gr55 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 056-063, gr56 - gr63 */ \
|
|||
|
/* Float Registers */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 064-071, fr0 - fr7 */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 072-079, fr8 - fr15 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 080-087, fr16 - fr23 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 088-095, fr24 - fr31 */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 096-103, fr32 - fr39 */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 104-111, fr48 - fr47 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 112-119, fr48 - fr55 */ \
|
|||
|
0, 0, 0, 0, 0, 0, 0, 0, /* 120-127, fr56 - fr63 */ \
|
|||
|
/* Condition Code Registers */ \
|
|||
|
1, 1, 1, 1, /* 128-131, fcc0 - fcc3 */ \
|
|||
|
1, 1, 1, 1, /* 132-135, icc0 - icc3 */ \
|
|||
|
/* Conditional execution Registers (CCR) */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 136-143, cr0 - cr7 */ \
|
|||
|
/* Accumulators */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 144-151, acc0 - acc7 */ \
|
|||
|
1, 1, 1, 1, /* 152-155, acc8 - acc11 */ \
|
|||
|
1, 1, 1, 1, 1, 1, 1, 1, /* 156-163, accg0 - accg7 */ \
|
|||
|
1, 1, 1, 1, /* 164-167, accg8 - accg11 */ \
|
|||
|
/* Other registers */ \
|
|||
|
1, /* 168, AP - fake arg ptr */ \
|
|||
|
1, /* 169, LR - Link register*/ \
|
|||
|
1, /* 170, LCR - Loop count reg */ \
|
|||
|
1, 1 /* 171-172, iacc0 */ \
|
|||
|
}
|
|||
|
|
|||
|
/* Zero or more C statements that may conditionally modify two variables
|
|||
|
`fixed_regs' and `call_used_regs' (both of type `char []') after they have
|
|||
|
been initialized from the two preceding macros.
|
|||
|
|
|||
|
This is necessary in case the fixed or call-clobbered registers depend on
|
|||
|
target flags.
|
|||
|
|
|||
|
You need not define this macro if it has no work to do.
|
|||
|
|
|||
|
If the usage of an entire class of registers depends on the target flags,
|
|||
|
you may indicate this to GCC by using this macro to modify `fixed_regs' and
|
|||
|
`call_used_regs' to 1 for each of the registers in the classes which should
|
|||
|
not be used by GCC. Also define the macro `REG_CLASS_FROM_LETTER' to return
|
|||
|
`NO_REGS' if it is called with a letter for a class that shouldn't be used.
|
|||
|
|
|||
|
(However, if this class is not included in `GENERAL_REGS' and all of the
|
|||
|
insn patterns whose constraints permit this class are controlled by target
|
|||
|
switches, then GCC will automatically avoid using these registers when the
|
|||
|
target switches are opposed to them.) */
|
|||
|
|
|||
|
#define CONDITIONAL_REGISTER_USAGE frv_conditional_register_usage ()
|
|||
|
|
|||
|
|
|||
|
/* Order of allocation of registers. */
|
|||
|
|
|||
|
/* If defined, an initializer for a vector of integers, containing the numbers
|
|||
|
of hard registers in the order in which GCC should prefer to use them
|
|||
|
(from most preferred to least).
|
|||
|
|
|||
|
If this macro is not defined, registers are used lowest numbered first (all
|
|||
|
else being equal).
|
|||
|
|
|||
|
One use of this macro is on machines where the highest numbered registers
|
|||
|
must always be saved and the save-multiple-registers instruction supports
|
|||
|
only sequences of consecutive registers. On such machines, define
|
|||
|
`REG_ALLOC_ORDER' to be an initializer that lists the highest numbered
|
|||
|
allocatable register first. */
|
|||
|
|
|||
|
/* On the FRV, allocate GR16 and GR17 after other saved registers so that we
|
|||
|
have a better chance of allocating 2 registers at a time and can use the
|
|||
|
double word load/store instructions in the prologue. */
|
|||
|
#define REG_ALLOC_ORDER \
|
|||
|
{ \
|
|||
|
/* volatile registers */ \
|
|||
|
GPR_FIRST + 4, GPR_FIRST + 5, GPR_FIRST + 6, GPR_FIRST + 7, \
|
|||
|
GPR_FIRST + 8, GPR_FIRST + 9, GPR_FIRST + 10, GPR_FIRST + 11, \
|
|||
|
GPR_FIRST + 12, GPR_FIRST + 13, GPR_FIRST + 14, GPR_FIRST + 15, \
|
|||
|
GPR_FIRST + 32, GPR_FIRST + 33, GPR_FIRST + 34, GPR_FIRST + 35, \
|
|||
|
GPR_FIRST + 36, GPR_FIRST + 37, GPR_FIRST + 38, GPR_FIRST + 39, \
|
|||
|
GPR_FIRST + 40, GPR_FIRST + 41, GPR_FIRST + 42, GPR_FIRST + 43, \
|
|||
|
GPR_FIRST + 44, GPR_FIRST + 45, GPR_FIRST + 46, GPR_FIRST + 47, \
|
|||
|
\
|
|||
|
FPR_FIRST + 0, FPR_FIRST + 1, FPR_FIRST + 2, FPR_FIRST + 3, \
|
|||
|
FPR_FIRST + 4, FPR_FIRST + 5, FPR_FIRST + 6, FPR_FIRST + 7, \
|
|||
|
FPR_FIRST + 8, FPR_FIRST + 9, FPR_FIRST + 10, FPR_FIRST + 11, \
|
|||
|
FPR_FIRST + 12, FPR_FIRST + 13, FPR_FIRST + 14, FPR_FIRST + 15, \
|
|||
|
FPR_FIRST + 32, FPR_FIRST + 33, FPR_FIRST + 34, FPR_FIRST + 35, \
|
|||
|
FPR_FIRST + 36, FPR_FIRST + 37, FPR_FIRST + 38, FPR_FIRST + 39, \
|
|||
|
FPR_FIRST + 40, FPR_FIRST + 41, FPR_FIRST + 42, FPR_FIRST + 43, \
|
|||
|
FPR_FIRST + 44, FPR_FIRST + 45, FPR_FIRST + 46, FPR_FIRST + 47, \
|
|||
|
\
|
|||
|
ICC_FIRST + 0, ICC_FIRST + 1, ICC_FIRST + 2, ICC_FIRST + 3, \
|
|||
|
FCC_FIRST + 0, FCC_FIRST + 1, FCC_FIRST + 2, FCC_FIRST + 3, \
|
|||
|
CR_FIRST + 0, CR_FIRST + 1, CR_FIRST + 2, CR_FIRST + 3, \
|
|||
|
CR_FIRST + 4, CR_FIRST + 5, CR_FIRST + 6, CR_FIRST + 7, \
|
|||
|
\
|
|||
|
/* saved registers */ \
|
|||
|
GPR_FIRST + 18, GPR_FIRST + 19, \
|
|||
|
GPR_FIRST + 20, GPR_FIRST + 21, GPR_FIRST + 22, GPR_FIRST + 23, \
|
|||
|
GPR_FIRST + 24, GPR_FIRST + 25, GPR_FIRST + 26, GPR_FIRST + 27, \
|
|||
|
GPR_FIRST + 48, GPR_FIRST + 49, GPR_FIRST + 50, GPR_FIRST + 51, \
|
|||
|
GPR_FIRST + 52, GPR_FIRST + 53, GPR_FIRST + 54, GPR_FIRST + 55, \
|
|||
|
GPR_FIRST + 56, GPR_FIRST + 57, GPR_FIRST + 58, GPR_FIRST + 59, \
|
|||
|
GPR_FIRST + 60, GPR_FIRST + 61, GPR_FIRST + 62, GPR_FIRST + 63, \
|
|||
|
GPR_FIRST + 16, GPR_FIRST + 17, \
|
|||
|
\
|
|||
|
FPR_FIRST + 16, FPR_FIRST + 17, FPR_FIRST + 18, FPR_FIRST + 19, \
|
|||
|
FPR_FIRST + 20, FPR_FIRST + 21, FPR_FIRST + 22, FPR_FIRST + 23, \
|
|||
|
FPR_FIRST + 24, FPR_FIRST + 25, FPR_FIRST + 26, FPR_FIRST + 27, \
|
|||
|
FPR_FIRST + 28, FPR_FIRST + 29, FPR_FIRST + 30, FPR_FIRST + 31, \
|
|||
|
FPR_FIRST + 48, FPR_FIRST + 49, FPR_FIRST + 50, FPR_FIRST + 51, \
|
|||
|
FPR_FIRST + 52, FPR_FIRST + 53, FPR_FIRST + 54, FPR_FIRST + 55, \
|
|||
|
FPR_FIRST + 56, FPR_FIRST + 57, FPR_FIRST + 58, FPR_FIRST + 59, \
|
|||
|
FPR_FIRST + 60, FPR_FIRST + 61, FPR_FIRST + 62, FPR_FIRST + 63, \
|
|||
|
\
|
|||
|
/* special or fixed registers */ \
|
|||
|
GPR_FIRST + 0, GPR_FIRST + 1, GPR_FIRST + 2, GPR_FIRST + 3, \
|
|||
|
GPR_FIRST + 28, GPR_FIRST + 29, GPR_FIRST + 30, GPR_FIRST + 31, \
|
|||
|
ACC_FIRST + 0, ACC_FIRST + 1, ACC_FIRST + 2, ACC_FIRST + 3, \
|
|||
|
ACC_FIRST + 4, ACC_FIRST + 5, ACC_FIRST + 6, ACC_FIRST + 7, \
|
|||
|
ACC_FIRST + 8, ACC_FIRST + 9, ACC_FIRST + 10, ACC_FIRST + 11, \
|
|||
|
ACCG_FIRST + 0, ACCG_FIRST + 1, ACCG_FIRST + 2, ACCG_FIRST + 3, \
|
|||
|
ACCG_FIRST + 4, ACCG_FIRST + 5, ACCG_FIRST + 6, ACCG_FIRST + 7, \
|
|||
|
ACCG_FIRST + 8, ACCG_FIRST + 9, ACCG_FIRST + 10, ACCG_FIRST + 11, \
|
|||
|
AP_FIRST, LR_REGNO, LCR_REGNO, \
|
|||
|
IACC_FIRST + 0, IACC_FIRST + 1 \
|
|||
|
}
|
|||
|
|
|||
|
|
|||
|
/* How Values Fit in Registers. */
|
|||
|
|
|||
|
/* A C expression for the number of consecutive hard registers, starting at
|
|||
|
register number REGNO, required to hold a value of mode MODE.
|
|||
|
|
|||
|
On a machine where all registers are exactly one word, a suitable definition
|
|||
|
of this macro is
|
|||
|
|
|||
|
#define HARD_REGNO_NREGS(REGNO, MODE) \
|
|||
|
((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \
|
|||
|
/ UNITS_PER_WORD)) */
|
|||
|
|
|||
|
/* On the FRV, make the CC modes take 3 words in the integer registers, so that
|
|||
|
we can build the appropriate instructions to properly reload the values. */
|
|||
|
#define HARD_REGNO_NREGS(REGNO, MODE) frv_hard_regno_nregs (REGNO, MODE)
|
|||
|
|
|||
|
/* A C expression that is nonzero if it is permissible to store a value of mode
|
|||
|
MODE in hard register number REGNO (or in several registers starting with
|
|||
|
that one). For a machine where all registers are equivalent, a suitable
|
|||
|
definition is
|
|||
|
|
|||
|
#define HARD_REGNO_MODE_OK(REGNO, MODE) 1
|
|||
|
|
|||
|
It is not necessary for this macro to check for the numbers of fixed
|
|||
|
registers, because the allocation mechanism considers them to be always
|
|||
|
occupied.
|
|||
|
|
|||
|
On some machines, double-precision values must be kept in even/odd register
|
|||
|
pairs. The way to implement that is to define this macro to reject odd
|
|||
|
register numbers for such modes.
|
|||
|
|
|||
|
The minimum requirement for a mode to be OK in a register is that the
|
|||
|
`movMODE' instruction pattern support moves between the register and any
|
|||
|
other hard register for which the mode is OK; and that moving a value into
|
|||
|
the register and back out not alter it.
|
|||
|
|
|||
|
Since the same instruction used to move `SImode' will work for all narrower
|
|||
|
integer modes, it is not necessary on any machine for `HARD_REGNO_MODE_OK'
|
|||
|
to distinguish between these modes, provided you define patterns `movhi',
|
|||
|
etc., to take advantage of this. This is useful because of the interaction
|
|||
|
between `HARD_REGNO_MODE_OK' and `MODES_TIEABLE_P'; it is very desirable for
|
|||
|
all integer modes to be tieable.
|
|||
|
|
|||
|
Many machines have special registers for floating point arithmetic. Often
|
|||
|
people assume that floating point machine modes are allowed only in floating
|
|||
|
point registers. This is not true. Any registers that can hold integers
|
|||
|
can safely *hold* a floating point machine mode, whether or not floating
|
|||
|
arithmetic can be done on it in those registers. Integer move instructions
|
|||
|
can be used to move the values.
|
|||
|
|
|||
|
On some machines, though, the converse is true: fixed-point machine modes
|
|||
|
may not go in floating registers. This is true if the floating registers
|
|||
|
normalize any value stored in them, because storing a non-floating value
|
|||
|
there would garble it. In this case, `HARD_REGNO_MODE_OK' should reject
|
|||
|
fixed-point machine modes in floating registers. But if the floating
|
|||
|
registers do not automatically normalize, if you can store any bit pattern
|
|||
|
in one and retrieve it unchanged without a trap, then any machine mode may
|
|||
|
go in a floating register, so you can define this macro to say so.
|
|||
|
|
|||
|
The primary significance of special floating registers is rather that they
|
|||
|
are the registers acceptable in floating point arithmetic instructions.
|
|||
|
However, this is of no concern to `HARD_REGNO_MODE_OK'. You handle it by
|
|||
|
writing the proper constraints for those instructions.
|
|||
|
|
|||
|
On some machines, the floating registers are especially slow to access, so
|
|||
|
that it is better to store a value in a stack frame than in such a register
|
|||
|
if floating point arithmetic is not being done. As long as the floating
|
|||
|
registers are not in class `GENERAL_REGS', they will not be used unless some
|
|||
|
pattern's constraint asks for one. */
|
|||
|
#define HARD_REGNO_MODE_OK(REGNO, MODE) frv_hard_regno_mode_ok (REGNO, MODE)
|
|||
|
|
|||
|
/* A C expression that is nonzero if it is desirable to choose register
|
|||
|
allocation so as to avoid move instructions between a value of mode MODE1
|
|||
|
and a value of mode MODE2.
|
|||
|
|
|||
|
If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, MODE2)' are
|
|||
|
ever different for any R, then `MODES_TIEABLE_P (MODE1, MODE2)' must be
|
|||
|
zero. */
|
|||
|
#define MODES_TIEABLE_P(MODE1, MODE2) (MODE1 == MODE2)
|
|||
|
|
|||
|
/* Define this macro if the compiler should avoid copies to/from CCmode
|
|||
|
registers. You should only define this macro if support fo copying to/from
|
|||
|
CCmode is incomplete. */
|
|||
|
#define AVOID_CCMODE_COPIES
|
|||
|
|
|||
|
|
|||
|
/* Register Classes. */
|
|||
|
|
|||
|
/* An enumeral type that must be defined with all the register class names as
|
|||
|
enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last
|
|||
|
register class, followed by one more enumeral value, `LIM_REG_CLASSES',
|
|||
|
which is not a register class but rather tells how many classes there are.
|
|||
|
|
|||
|
Each register class has a number, which is the value of casting the class
|
|||
|
name to type `int'. The number serves as an index in many of the tables
|
|||
|
described below. */
|
|||
|
enum reg_class
|
|||
|
{
|
|||
|
NO_REGS,
|
|||
|
ICC_REGS,
|
|||
|
FCC_REGS,
|
|||
|
CC_REGS,
|
|||
|
ICR_REGS,
|
|||
|
FCR_REGS,
|
|||
|
CR_REGS,
|
|||
|
LCR_REG,
|
|||
|
LR_REG,
|
|||
|
GR8_REGS,
|
|||
|
GR9_REGS,
|
|||
|
GR89_REGS,
|
|||
|
FDPIC_REGS,
|
|||
|
FDPIC_FPTR_REGS,
|
|||
|
FDPIC_CALL_REGS,
|
|||
|
SPR_REGS,
|
|||
|
QUAD_ACC_REGS,
|
|||
|
EVEN_ACC_REGS,
|
|||
|
ACC_REGS,
|
|||
|
ACCG_REGS,
|
|||
|
QUAD_FPR_REGS,
|
|||
|
FEVEN_REGS,
|
|||
|
FPR_REGS,
|
|||
|
QUAD_REGS,
|
|||
|
EVEN_REGS,
|
|||
|
GPR_REGS,
|
|||
|
ALL_REGS,
|
|||
|
LIM_REG_CLASSES
|
|||
|
};
|
|||
|
|
|||
|
#define GENERAL_REGS GPR_REGS
|
|||
|
|
|||
|
/* The number of distinct register classes, defined as follows:
|
|||
|
|
|||
|
#define N_REG_CLASSES (int) LIM_REG_CLASSES */
|
|||
|
#define N_REG_CLASSES ((int) LIM_REG_CLASSES)
|
|||
|
|
|||
|
/* An initializer containing the names of the register classes as C string
|
|||
|
constants. These names are used in writing some of the debugging dumps. */
|
|||
|
#define REG_CLASS_NAMES { \
|
|||
|
"NO_REGS", \
|
|||
|
"ICC_REGS", \
|
|||
|
"FCC_REGS", \
|
|||
|
"CC_REGS", \
|
|||
|
"ICR_REGS", \
|
|||
|
"FCR_REGS", \
|
|||
|
"CR_REGS", \
|
|||
|
"LCR_REG", \
|
|||
|
"LR_REG", \
|
|||
|
"GR8_REGS", \
|
|||
|
"GR9_REGS", \
|
|||
|
"GR89_REGS", \
|
|||
|
"FDPIC_REGS", \
|
|||
|
"FDPIC_FPTR_REGS", \
|
|||
|
"FDPIC_CALL_REGS", \
|
|||
|
"SPR_REGS", \
|
|||
|
"QUAD_ACC_REGS", \
|
|||
|
"EVEN_ACC_REGS", \
|
|||
|
"ACC_REGS", \
|
|||
|
"ACCG_REGS", \
|
|||
|
"QUAD_FPR_REGS", \
|
|||
|
"FEVEN_REGS", \
|
|||
|
"FPR_REGS", \
|
|||
|
"QUAD_REGS", \
|
|||
|
"EVEN_REGS", \
|
|||
|
"GPR_REGS", \
|
|||
|
"ALL_REGS" \
|
|||
|
}
|
|||
|
|
|||
|
/* An initializer containing the contents of the register classes, as integers
|
|||
|
which are bit masks. The Nth integer specifies the contents of class N.
|
|||
|
The way the integer MASK is interpreted is that register R is in the class
|
|||
|
if `MASK & (1 << R)' is 1.
|
|||
|
|
|||
|
When the machine has more than 32 registers, an integer does not suffice.
|
|||
|
Then the integers are replaced by sub-initializers, braced groupings
|
|||
|
containing several integers. Each sub-initializer must be suitable as an
|
|||
|
initializer for the type `HARD_REG_SET' which is defined in
|
|||
|
`hard-reg-set.h'. */
|
|||
|
#define REG_CLASS_CONTENTS \
|
|||
|
{ /* gr0-gr31 gr32-gr63 fr0-fr31 fr32-fr-63 cc/ccr/acc ap/spr */ \
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* NO_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x000000f0,0x0}, /* ICC_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x0000000f,0x0}, /* FCC_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x000000ff,0x0}, /* CC_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x0000f000,0x0}, /* ICR_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x00000f00,0x0}, /* FCR_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x0000ff00,0x0}, /* CR_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x400}, /* LCR_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x200}, /* LR_REGS */\
|
|||
|
{ 0x00000100,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* GR8_REGS */\
|
|||
|
{ 0x00000200,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* GR9_REGS */\
|
|||
|
{ 0x00000300,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* GR89_REGS */\
|
|||
|
{ 0x00008000,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* FDPIC_REGS */\
|
|||
|
{ 0x00004000,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* FDPIC_FPTR_REGS */\
|
|||
|
{ 0x0000c000,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* FDPIC_CALL_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x1e00}, /* SPR_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x0fff0000,0x0}, /* QUAD_ACC */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x0fff0000,0x0}, /* EVEN_ACC */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0x0fff0000,0x0}, /* ACC_REGS */\
|
|||
|
{ 0x00000000,0x00000000,0x00000000,0x00000000,0xf0000000,0xff}, /* ACCG_REGS*/\
|
|||
|
{ 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* QUAD_FPR */\
|
|||
|
{ 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* FEVEN_REG*/\
|
|||
|
{ 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* FPR_REGS */\
|
|||
|
{ 0x0ffffffc,0xffffffff,0x00000000,0x00000000,0x00000000,0x0}, /* QUAD_REGS*/\
|
|||
|
{ 0xfffffffc,0xffffffff,0x00000000,0x00000000,0x00000000,0x0}, /* EVEN_REGS*/\
|
|||
|
{ 0xffffffff,0xffffffff,0x00000000,0x00000000,0x00000000,0x100}, /* GPR_REGS */\
|
|||
|
{ 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0x1fff}, /* ALL_REGS */\
|
|||
|
}
|
|||
|
|
|||
|
/* The following macro defines cover classes for Integrated Register
|
|||
|
Allocator. Cover classes is a set of non-intersected register
|
|||
|
classes covering all hard registers used for register allocation
|
|||
|
purpose. Any move between two registers of a cover class should be
|
|||
|
cheaper than load or store of the registers. The macro value is
|
|||
|
array of register classes with LIM_REG_CLASSES used as the end
|
|||
|
marker. */
|
|||
|
|
|||
|
#define IRA_COVER_CLASSES \
|
|||
|
{ \
|
|||
|
GPR_REGS, FPR_REGS, ACC_REGS, ICR_REGS, FCR_REGS, ICC_REGS, FCC_REGS, \
|
|||
|
ACCG_REGS, SPR_REGS, \
|
|||
|
LIM_REG_CLASSES \
|
|||
|
}
|
|||
|
|
|||
|
/* A C expression whose value is a register class containing hard register
|
|||
|
REGNO. In general there is more than one such class; choose a class which
|
|||
|
is "minimal", meaning that no smaller class also contains the register. */
|
|||
|
|
|||
|
extern enum reg_class regno_reg_class[];
|
|||
|
#define REGNO_REG_CLASS(REGNO) regno_reg_class [REGNO]
|
|||
|
|
|||
|
/* A macro whose definition is the name of the class to which a valid base
|
|||
|
register must belong. A base register is one used in an address which is
|
|||
|
the register value plus a displacement. */
|
|||
|
#define BASE_REG_CLASS GPR_REGS
|
|||
|
|
|||
|
/* A macro whose definition is the name of the class to which a valid index
|
|||
|
register must belong. An index register is one used in an address where its
|
|||
|
value is either multiplied by a scale factor or added to another register
|
|||
|
(as well as added to a displacement). */
|
|||
|
#define INDEX_REG_CLASS GPR_REGS
|
|||
|
|
|||
|
/* A C expression which defines the machine-dependent operand constraint
|
|||
|
letters for register classes. If CHAR is such a letter, the value should be
|
|||
|
the register class corresponding to it. Otherwise, the value should be
|
|||
|
`NO_REGS'. The register letter `r', corresponding to class `GENERAL_REGS',
|
|||
|
will not be passed to this macro; you do not need to handle it.
|
|||
|
|
|||
|
The following letters are unavailable, due to being used as
|
|||
|
constraints:
|
|||
|
'0'..'9'
|
|||
|
'<', '>'
|
|||
|
'E', 'F', 'G', 'H'
|
|||
|
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P'
|
|||
|
'Q', 'R', 'S', 'T', 'U'
|
|||
|
'V', 'X'
|
|||
|
'g', 'i', 'm', 'n', 'o', 'p', 'r', 's' */
|
|||
|
|
|||
|
extern enum reg_class reg_class_from_letter[];
|
|||
|
#define REG_CLASS_FROM_LETTER(CHAR) reg_class_from_letter [(unsigned char)(CHAR)]
|
|||
|
|
|||
|
/* A C expression which is nonzero if register number NUM is suitable for use
|
|||
|
as a base register in operand addresses. It may be either a suitable hard
|
|||
|
register or a pseudo register that has been allocated such a hard register. */
|
|||
|
#define REGNO_OK_FOR_BASE_P(NUM) \
|
|||
|
((NUM) < FIRST_PSEUDO_REGISTER \
|
|||
|
? GPR_P (NUM) \
|
|||
|
: (reg_renumber [NUM] >= 0 && GPR_P (reg_renumber [NUM])))
|
|||
|
|
|||
|
/* A C expression which is nonzero if register number NUM is suitable for use
|
|||
|
as an index register in operand addresses. It may be either a suitable hard
|
|||
|
register or a pseudo register that has been allocated such a hard register.
|
|||
|
|
|||
|
The difference between an index register and a base register is that the
|
|||
|
index register may be scaled. If an address involves the sum of two
|
|||
|
registers, neither one of them scaled, then either one may be labeled the
|
|||
|
"base" and the other the "index"; but whichever labeling is used must fit
|
|||
|
the machine's constraints of which registers may serve in each capacity.
|
|||
|
The compiler will try both labelings, looking for one that is valid, and
|
|||
|
will reload one or both registers only if neither labeling works. */
|
|||
|
#define REGNO_OK_FOR_INDEX_P(NUM) \
|
|||
|
((NUM) < FIRST_PSEUDO_REGISTER \
|
|||
|
? GPR_P (NUM) \
|
|||
|
: (reg_renumber [NUM] >= 0 && GPR_P (reg_renumber [NUM])))
|
|||
|
|
|||
|
/* A C expression that places additional restrictions on the register class to
|
|||
|
use when it is necessary to copy value X into a register in class CLASS.
|
|||
|
The value is a register class; perhaps CLASS, or perhaps another, smaller
|
|||
|
class. On many machines, the following definition is safe:
|
|||
|
|
|||
|
#define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS
|
|||
|
|
|||
|
Sometimes returning a more restrictive class makes better code. For
|
|||
|
example, on the 68000, when X is an integer constant that is in range for a
|
|||
|
`moveq' instruction, the value of this macro is always `DATA_REGS' as long
|
|||
|
as CLASS includes the data registers. Requiring a data register guarantees
|
|||
|
that a `moveq' will be used.
|
|||
|
|
|||
|
If X is a `const_double', by returning `NO_REGS' you can force X into a
|
|||
|
memory constant. This is useful on certain machines where immediate
|
|||
|
floating values cannot be loaded into certain kinds of registers.
|
|||
|
|
|||
|
This declaration must be present. */
|
|||
|
#define PREFERRED_RELOAD_CLASS(X, CLASS) CLASS
|
|||
|
|
|||
|
#define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
|
|||
|
frv_secondary_reload_class (CLASS, MODE, X)
|
|||
|
|
|||
|
#define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
|
|||
|
frv_secondary_reload_class (CLASS, MODE, X)
|
|||
|
|
|||
|
/* A C expression whose value is nonzero if pseudos that have been assigned to
|
|||
|
registers of class CLASS would likely be spilled because registers of CLASS
|
|||
|
are needed for spill registers.
|
|||
|
|
|||
|
The default value of this macro returns 1 if CLASS has exactly one register
|
|||
|
and zero otherwise. On most machines, this default should be used. Only
|
|||
|
define this macro to some other expression if pseudo allocated by
|
|||
|
`local-alloc.c' end up in memory because their hard registers were needed
|
|||
|
for spill registers. If this macro returns nonzero for those classes, those
|
|||
|
pseudos will only be allocated by `global.c', which knows how to reallocate
|
|||
|
the pseudo to another register. If there would not be another register
|
|||
|
available for reallocation, you should not change the definition of this
|
|||
|
macro since the only effect of such a definition would be to slow down
|
|||
|
register allocation. */
|
|||
|
#define CLASS_LIKELY_SPILLED_P(CLASS) frv_class_likely_spilled_p (CLASS)
|
|||
|
|
|||
|
/* A C expression for the maximum number of consecutive registers of
|
|||
|
class CLASS needed to hold a value of mode MODE.
|
|||
|
|
|||
|
This is closely related to the macro `HARD_REGNO_NREGS'. In fact, the value
|
|||
|
of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be the maximum value of
|
|||
|
`HARD_REGNO_NREGS (REGNO, MODE)' for all REGNO values in the class CLASS.
|
|||
|
|
|||
|
This macro helps control the handling of multiple-word values in
|
|||
|
the reload pass.
|
|||
|
|
|||
|
This declaration is required. */
|
|||
|
#define CLASS_MAX_NREGS(CLASS, MODE) frv_class_max_nregs (CLASS, MODE)
|
|||
|
|
|||
|
#define ZERO_P(x) (x == CONST0_RTX (GET_MODE (x)))
|
|||
|
|
|||
|
/* 6-bit signed immediate. */
|
|||
|
#define CONST_OK_FOR_I(VALUE) IN_RANGE_P(VALUE, -32, 31)
|
|||
|
/* 10-bit signed immediate. */
|
|||
|
#define CONST_OK_FOR_J(VALUE) IN_RANGE_P(VALUE, -512, 511)
|
|||
|
/* Unused */
|
|||
|
#define CONST_OK_FOR_K(VALUE) 0
|
|||
|
/* 16-bit signed immediate. */
|
|||
|
#define CONST_OK_FOR_L(VALUE) IN_RANGE_P(VALUE, -32768, 32767)
|
|||
|
/* 16-bit unsigned immediate. */
|
|||
|
#define CONST_OK_FOR_M(VALUE) IN_RANGE_P (VALUE, 0, 65535)
|
|||
|
/* 12-bit signed immediate that is negative. */
|
|||
|
#define CONST_OK_FOR_N(VALUE) IN_RANGE_P(VALUE, -2048, -1)
|
|||
|
/* Zero */
|
|||
|
#define CONST_OK_FOR_O(VALUE) ((VALUE) == 0)
|
|||
|
/* 12-bit signed immediate that is negative. */
|
|||
|
#define CONST_OK_FOR_P(VALUE) IN_RANGE_P(VALUE, 1, 2047)
|
|||
|
|
|||
|
/* A C expression that defines the machine-dependent operand constraint letters
|
|||
|
(`I', `J', `K', .. 'P') that specify particular ranges of integer values.
|
|||
|
If C is one of those letters, the expression should check that VALUE, an
|
|||
|
integer, is in the appropriate range and return 1 if so, 0 otherwise. If C
|
|||
|
is not one of those letters, the value should be 0 regardless of VALUE. */
|
|||
|
#define CONST_OK_FOR_LETTER_P(VALUE, C) \
|
|||
|
( (C) == 'I' ? CONST_OK_FOR_I (VALUE) \
|
|||
|
: (C) == 'J' ? CONST_OK_FOR_J (VALUE) \
|
|||
|
: (C) == 'K' ? CONST_OK_FOR_K (VALUE) \
|
|||
|
: (C) == 'L' ? CONST_OK_FOR_L (VALUE) \
|
|||
|
: (C) == 'M' ? CONST_OK_FOR_M (VALUE) \
|
|||
|
: (C) == 'N' ? CONST_OK_FOR_N (VALUE) \
|
|||
|
: (C) == 'O' ? CONST_OK_FOR_O (VALUE) \
|
|||
|
: (C) == 'P' ? CONST_OK_FOR_P (VALUE) \
|
|||
|
: 0)
|
|||
|
|
|||
|
|
|||
|
/* A C expression that defines the machine-dependent operand constraint letters
|
|||
|
(`G', `H') that specify particular ranges of `const_double' values.
|
|||
|
|
|||
|
If C is one of those letters, the expression should check that VALUE, an RTX
|
|||
|
of code `const_double', is in the appropriate range and return 1 if so, 0
|
|||
|
otherwise. If C is not one of those letters, the value should be 0
|
|||
|
regardless of VALUE.
|
|||
|
|
|||
|
`const_double' is used for all floating-point constants and for `DImode'
|
|||
|
fixed-point constants. A given letter can accept either or both kinds of
|
|||
|
values. It can use `GET_MODE' to distinguish between these kinds. */
|
|||
|
|
|||
|
#define CONST_DOUBLE_OK_FOR_G(VALUE) \
|
|||
|
((GET_MODE (VALUE) == VOIDmode \
|
|||
|
&& CONST_DOUBLE_LOW (VALUE) == 0 \
|
|||
|
&& CONST_DOUBLE_HIGH (VALUE) == 0) \
|
|||
|
|| ((GET_MODE (VALUE) == SFmode \
|
|||
|
|| GET_MODE (VALUE) == DFmode) \
|
|||
|
&& (VALUE) == CONST0_RTX (GET_MODE (VALUE))))
|
|||
|
|
|||
|
#define CONST_DOUBLE_OK_FOR_H(VALUE) 0
|
|||
|
|
|||
|
#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
|
|||
|
( (C) == 'G' ? CONST_DOUBLE_OK_FOR_G (VALUE) \
|
|||
|
: (C) == 'H' ? CONST_DOUBLE_OK_FOR_H (VALUE) \
|
|||
|
: 0)
|
|||
|
|
|||
|
/* A C expression that defines the optional machine-dependent constraint
|
|||
|
letters (`Q', `R', `S', `T', `U') that can be used to segregate specific
|
|||
|
types of operands, usually memory references, for the target machine.
|
|||
|
Normally this macro will not be defined. If it is required for a particular
|
|||
|
target machine, it should return 1 if VALUE corresponds to the operand type
|
|||
|
represented by the constraint letter C. If C is not defined as an extra
|
|||
|
constraint, the value returned should be 0 regardless of VALUE.
|
|||
|
|
|||
|
For example, on the ROMP, load instructions cannot have their output in r0
|
|||
|
if the memory reference contains a symbolic address. Constraint letter `Q'
|
|||
|
is defined as representing a memory address that does *not* contain a
|
|||
|
symbolic address. An alternative is specified with a `Q' constraint on the
|
|||
|
input and `r' on the output. The next alternative specifies `m' on the
|
|||
|
input and a register class that does not include r0 on the output. */
|
|||
|
|
|||
|
/* 12-bit relocations. */
|
|||
|
#define EXTRA_CONSTRAINT_FOR_Q(VALUE) \
|
|||
|
(got12_operand (VALUE, GET_MODE (VALUE)))
|
|||
|
|
|||
|
/* Double word memory ops that take one instruction. */
|
|||
|
#define EXTRA_CONSTRAINT_FOR_R(VALUE) \
|
|||
|
(dbl_memory_one_insn_operand (VALUE, GET_MODE (VALUE)))
|
|||
|
|
|||
|
/* SYMBOL_REF */
|
|||
|
#define EXTRA_CONSTRAINT_FOR_S(VALUE) \
|
|||
|
(CONSTANT_P (VALUE) && call_operand (VALUE, VOIDmode))
|
|||
|
|
|||
|
/* Double word memory ops that take two instructions. */
|
|||
|
#define EXTRA_CONSTRAINT_FOR_T(VALUE) \
|
|||
|
(dbl_memory_two_insn_operand (VALUE, GET_MODE (VALUE)))
|
|||
|
|
|||
|
/* Memory operand for conditional execution. */
|
|||
|
#define EXTRA_CONSTRAINT_FOR_U(VALUE) \
|
|||
|
(condexec_memory_operand (VALUE, GET_MODE (VALUE)))
|
|||
|
|
|||
|
#define EXTRA_CONSTRAINT(VALUE, C) \
|
|||
|
( (C) == 'Q' ? EXTRA_CONSTRAINT_FOR_Q (VALUE) \
|
|||
|
: (C) == 'R' ? EXTRA_CONSTRAINT_FOR_R (VALUE) \
|
|||
|
: (C) == 'S' ? EXTRA_CONSTRAINT_FOR_S (VALUE) \
|
|||
|
: (C) == 'T' ? EXTRA_CONSTRAINT_FOR_T (VALUE) \
|
|||
|
: (C) == 'U' ? EXTRA_CONSTRAINT_FOR_U (VALUE) \
|
|||
|
: 0)
|
|||
|
|
|||
|
#define EXTRA_MEMORY_CONSTRAINT(C,STR) \
|
|||
|
((C) == 'U' || (C) == 'R' || (C) == 'T')
|
|||
|
|
|||
|
#define CONSTRAINT_LEN(C, STR) \
|
|||
|
((C) == 'D' ? 3 : DEFAULT_CONSTRAINT_LEN ((C), (STR)))
|
|||
|
|
|||
|
#define REG_CLASS_FROM_CONSTRAINT(C, STR) \
|
|||
|
(((C) == 'D' && (STR)[1] == '8' && (STR)[2] == '9') ? GR89_REGS : \
|
|||
|
((C) == 'D' && (STR)[1] == '0' && (STR)[2] == '9') ? GR9_REGS : \
|
|||
|
((C) == 'D' && (STR)[1] == '0' && (STR)[2] == '8') ? GR8_REGS : \
|
|||
|
((C) == 'D' && (STR)[1] == '1' && (STR)[2] == '4') ? FDPIC_FPTR_REGS : \
|
|||
|
((C) == 'D' && (STR)[1] == '1' && (STR)[2] == '5') ? FDPIC_REGS : \
|
|||
|
REG_CLASS_FROM_LETTER ((C)))
|
|||
|
|
|||
|
|
|||
|
/* Basic Stack Layout. */
|
|||
|
|
|||
|
/* Structure to describe information about a saved range of registers */
|
|||
|
|
|||
|
typedef struct frv_stack_regs {
|
|||
|
const char * name; /* name of the register ranges */
|
|||
|
int first; /* first register in the range */
|
|||
|
int last; /* last register in the range */
|
|||
|
int size_1word; /* # of bytes to be stored via 1 word stores */
|
|||
|
int size_2words; /* # of bytes to be stored via 2 word stores */
|
|||
|
unsigned char field_p; /* true if the registers are a single SPR */
|
|||
|
unsigned char dword_p; /* true if we can do dword stores */
|
|||
|
unsigned char special_p; /* true if the regs have a fixed save loc. */
|
|||
|
} frv_stack_regs_t;
|
|||
|
|
|||
|
/* Register ranges to look into saving. */
|
|||
|
#define STACK_REGS_GPR 0 /* Gprs (normally gr16..gr31, gr48..gr63) */
|
|||
|
#define STACK_REGS_FPR 1 /* Fprs (normally fr16..fr31, fr48..fr63) */
|
|||
|
#define STACK_REGS_LR 2 /* LR register */
|
|||
|
#define STACK_REGS_CC 3 /* CCrs (normally not saved) */
|
|||
|
#define STACK_REGS_LCR 5 /* lcr register */
|
|||
|
#define STACK_REGS_STDARG 6 /* stdarg registers */
|
|||
|
#define STACK_REGS_STRUCT 7 /* structure return (gr3) */
|
|||
|
#define STACK_REGS_FP 8 /* FP register */
|
|||
|
#define STACK_REGS_MAX 9 /* # of register ranges */
|
|||
|
|
|||
|
/* Values for save_p field. */
|
|||
|
#define REG_SAVE_NO_SAVE 0 /* register not saved */
|
|||
|
#define REG_SAVE_1WORD 1 /* save the register */
|
|||
|
#define REG_SAVE_2WORDS 2 /* save register and register+1 */
|
|||
|
|
|||
|
/* Structure used to define the frv stack. */
|
|||
|
|
|||
|
typedef struct frv_stack {
|
|||
|
int total_size; /* total bytes allocated for stack */
|
|||
|
int vars_size; /* variable save area size */
|
|||
|
int parameter_size; /* outgoing parameter size */
|
|||
|
int stdarg_size; /* size of regs needed to be saved for stdarg */
|
|||
|
int regs_size; /* size of the saved registers */
|
|||
|
int regs_size_1word; /* # of bytes to be stored via 1 word stores */
|
|||
|
int regs_size_2words; /* # of bytes to be stored via 2 word stores */
|
|||
|
int header_size; /* size of the old FP, struct ret., LR save */
|
|||
|
int pretend_size; /* size of pretend args */
|
|||
|
int vars_offset; /* offset to save local variables from new SP*/
|
|||
|
int regs_offset; /* offset to save registers from new SP */
|
|||
|
/* register range information */
|
|||
|
frv_stack_regs_t regs[STACK_REGS_MAX];
|
|||
|
/* offset to store each register */
|
|||
|
int reg_offset[FIRST_PSEUDO_REGISTER];
|
|||
|
/* whether to save register (& reg+1) */
|
|||
|
unsigned char save_p[FIRST_PSEUDO_REGISTER];
|
|||
|
} frv_stack_t;
|
|||
|
|
|||
|
/* Define this macro if pushing a word onto the stack moves the stack pointer
|
|||
|
to a smaller address. */
|
|||
|
#define STACK_GROWS_DOWNWARD 1
|
|||
|
|
|||
|
/* Define this macro to nonzero if the addresses of local variable slots
|
|||
|
are at negative offsets from the frame pointer. */
|
|||
|
#define FRAME_GROWS_DOWNWARD 1
|
|||
|
|
|||
|
/* Offset from the frame pointer to the first local variable slot to be
|
|||
|
allocated.
|
|||
|
|
|||
|
If `FRAME_GROWS_DOWNWARD', find the next slot's offset by subtracting the
|
|||
|
first slot's length from `STARTING_FRAME_OFFSET'. Otherwise, it is found by
|
|||
|
adding the length of the first slot to the value `STARTING_FRAME_OFFSET'. */
|
|||
|
#define STARTING_FRAME_OFFSET 0
|
|||
|
|
|||
|
/* Offset from the stack pointer register to the first location at which
|
|||
|
outgoing arguments are placed. If not specified, the default value of zero
|
|||
|
is used. This is the proper value for most machines.
|
|||
|
|
|||
|
If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
|
|||
|
location at which outgoing arguments are placed. */
|
|||
|
#define STACK_POINTER_OFFSET 0
|
|||
|
|
|||
|
/* Offset from the argument pointer register to the first argument's address.
|
|||
|
On some machines it may depend on the data type of the function.
|
|||
|
|
|||
|
If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
|
|||
|
argument's address. */
|
|||
|
#define FIRST_PARM_OFFSET(FUNDECL) 0
|
|||
|
|
|||
|
/* A C expression whose value is RTL representing the address in a stack frame
|
|||
|
where the pointer to the caller's frame is stored. Assume that FRAMEADDR is
|
|||
|
an RTL expression for the address of the stack frame itself.
|
|||
|
|
|||
|
If you don't define this macro, the default is to return the value of
|
|||
|
FRAMEADDR--that is, the stack frame address is also the address of the stack
|
|||
|
word that points to the previous frame. */
|
|||
|
#define DYNAMIC_CHAIN_ADDRESS(FRAMEADDR) frv_dynamic_chain_address (FRAMEADDR)
|
|||
|
|
|||
|
/* A C expression whose value is RTL representing the value of the return
|
|||
|
address for the frame COUNT steps up from the current frame, after the
|
|||
|
prologue. FRAMEADDR is the frame pointer of the COUNT frame, or the frame
|
|||
|
pointer of the COUNT - 1 frame if `RETURN_ADDR_IN_PREVIOUS_FRAME' is
|
|||
|
defined.
|
|||
|
|
|||
|
The value of the expression must always be the correct address when COUNT is
|
|||
|
zero, but may be `NULL_RTX' if there is not way to determine the return
|
|||
|
address of other frames. */
|
|||
|
#define RETURN_ADDR_RTX(COUNT, FRAMEADDR) frv_return_addr_rtx (COUNT, FRAMEADDR)
|
|||
|
|
|||
|
#define RETURN_POINTER_REGNUM LR_REGNO
|
|||
|
|
|||
|
/* A C expression whose value is RTL representing the location of the incoming
|
|||
|
return address at the beginning of any function, before the prologue. This
|
|||
|
RTL is either a `REG', indicating that the return value is saved in `REG',
|
|||
|
or a `MEM' representing a location in the stack.
|
|||
|
|
|||
|
You only need to define this macro if you want to support call frame
|
|||
|
debugging information like that provided by DWARF 2. */
|
|||
|
#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RETURN_POINTER_REGNUM)
|
|||
|
|
|||
|
|
|||
|
/* Register That Address the Stack Frame. */
|
|||
|
|
|||
|
/* The register number of the stack pointer register, which must also be a
|
|||
|
fixed register according to `FIXED_REGISTERS'. On most machines, the
|
|||
|
hardware determines which register this is. */
|
|||
|
#define STACK_POINTER_REGNUM (GPR_FIRST + 1)
|
|||
|
|
|||
|
/* The register number of the frame pointer register, which is used to access
|
|||
|
automatic variables in the stack frame. On some machines, the hardware
|
|||
|
determines which register this is. On other machines, you can choose any
|
|||
|
register you wish for this purpose. */
|
|||
|
#define FRAME_POINTER_REGNUM (GPR_FIRST + 2)
|
|||
|
|
|||
|
/* The register number of the arg pointer register, which is used to access the
|
|||
|
function's argument list. On some machines, this is the same as the frame
|
|||
|
pointer register. On some machines, the hardware determines which register
|
|||
|
this is. On other machines, you can choose any register you wish for this
|
|||
|
purpose. If this is not the same register as the frame pointer register,
|
|||
|
then you must mark it as a fixed register according to `FIXED_REGISTERS', or
|
|||
|
arrange to be able to eliminate it. */
|
|||
|
|
|||
|
/* On frv this is a fake register that is eliminated in
|
|||
|
terms of either the frame pointer or stack pointer. */
|
|||
|
#define ARG_POINTER_REGNUM AP_FIRST
|
|||
|
|
|||
|
/* Register numbers used for passing a function's static chain pointer. If
|
|||
|
register windows are used, the register number as seen by the called
|
|||
|
function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as
|
|||
|
seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers
|
|||
|
are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined.
|
|||
|
|
|||
|
The static chain register need not be a fixed register.
|
|||
|
|
|||
|
If the static chain is passed in memory, these macros should not be defined;
|
|||
|
instead, the next two macros should be defined. */
|
|||
|
#define STATIC_CHAIN_REGNUM (GPR_FIRST + 7)
|
|||
|
#define STATIC_CHAIN_INCOMING_REGNUM (GPR_FIRST + 7)
|
|||
|
|
|||
|
|
|||
|
/* Eliminating the Frame Pointer and the Arg Pointer. */
|
|||
|
|
|||
|
/* If defined, this macro specifies a table of register pairs used to eliminate
|
|||
|
unneeded registers that point into the stack frame. If it is not defined,
|
|||
|
the only elimination attempted by the compiler is to replace references to
|
|||
|
the frame pointer with references to the stack pointer.
|
|||
|
|
|||
|
The definition of this macro is a list of structure initializations, each of
|
|||
|
which specifies an original and replacement register.
|
|||
|
|
|||
|
On some machines, the position of the argument pointer is not known until
|
|||
|
the compilation is completed. In such a case, a separate hard register must
|
|||
|
be used for the argument pointer. This register can be eliminated by
|
|||
|
replacing it with either the frame pointer or the argument pointer,
|
|||
|
depending on whether or not the frame pointer has been eliminated.
|
|||
|
|
|||
|
In this case, you might specify:
|
|||
|
#define ELIMINABLE_REGS \
|
|||
|
{{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
|
|||
|
{ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
|
|||
|
{FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
|
|||
|
|
|||
|
Note that the elimination of the argument pointer with the stack pointer is
|
|||
|
specified first since that is the preferred elimination. */
|
|||
|
|
|||
|
#define ELIMINABLE_REGS \
|
|||
|
{ \
|
|||
|
{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
|
|||
|
{ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
|
|||
|
{FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \
|
|||
|
}
|
|||
|
|
|||
|
/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the
|
|||
|
initial difference between the specified pair of registers. This macro must
|
|||
|
be defined if `ELIMINABLE_REGS' is defined. */
|
|||
|
|
|||
|
#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
|
|||
|
(OFFSET) = frv_initial_elimination_offset (FROM, TO)
|
|||
|
|
|||
|
|
|||
|
/* Passing Function Arguments on the Stack. */
|
|||
|
|
|||
|
/* If defined, the maximum amount of space required for outgoing arguments will
|
|||
|
be computed and placed into the variable
|
|||
|
`crtl->outgoing_args_size'. No space will be pushed onto the
|
|||
|
stack for each call; instead, the function prologue should increase the
|
|||
|
stack frame size by this amount.
|
|||
|
|
|||
|
Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not
|
|||
|
proper. */
|
|||
|
#define ACCUMULATE_OUTGOING_ARGS 1
|
|||
|
|
|||
|
/* A C expression that should indicate the number of bytes of its own arguments
|
|||
|
that a function pops on returning, or 0 if the function pops no arguments
|
|||
|
and the caller must therefore pop them all after the function returns.
|
|||
|
|
|||
|
FUNDECL is a C variable whose value is a tree node that describes the
|
|||
|
function in question. Normally it is a node of type `FUNCTION_DECL' that
|
|||
|
describes the declaration of the function. From this it is possible to
|
|||
|
obtain the DECL_ATTRIBUTES of the function.
|
|||
|
|
|||
|
FUNTYPE is a C variable whose value is a tree node that describes the
|
|||
|
function in question. Normally it is a node of type `FUNCTION_TYPE' that
|
|||
|
describes the data type of the function. From this it is possible to obtain
|
|||
|
the data types of the value and arguments (if known).
|
|||
|
|
|||
|
When a call to a library function is being considered, FUNTYPE will contain
|
|||
|
an identifier node for the library function. Thus, if you need to
|
|||
|
distinguish among various library functions, you can do so by their names.
|
|||
|
Note that "library function" in this context means a function used to
|
|||
|
perform arithmetic, whose name is known specially in the compiler and was
|
|||
|
not mentioned in the C code being compiled.
|
|||
|
|
|||
|
STACK-SIZE is the number of bytes of arguments passed on the stack. If a
|
|||
|
variable number of bytes is passed, it is zero, and argument popping will
|
|||
|
always be the responsibility of the calling function.
|
|||
|
|
|||
|
On the VAX, all functions always pop their arguments, so the definition of
|
|||
|
this macro is STACK-SIZE. On the 68000, using the standard calling
|
|||
|
convention, no functions pop their arguments, so the value of the macro is
|
|||
|
always 0 in this case. But an alternative calling convention is available
|
|||
|
in which functions that take a fixed number of arguments pop them but other
|
|||
|
functions (such as `printf') pop nothing (the caller pops all). When this
|
|||
|
convention is in use, FUNTYPE is examined to determine whether a function
|
|||
|
takes a fixed number of arguments. */
|
|||
|
#define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
|
|||
|
|
|||
|
|
|||
|
/* The number of register assigned to holding function arguments. */
|
|||
|
|
|||
|
#define FRV_NUM_ARG_REGS 6
|
|||
|
|
|||
|
#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
|
|||
|
frv_function_arg (&CUM, MODE, TYPE, NAMED, FALSE)
|
|||
|
|
|||
|
/* Define this macro if the target machine has "register windows", so that the
|
|||
|
register in which a function sees an arguments is not necessarily the same
|
|||
|
as the one in which the caller passed the argument.
|
|||
|
|
|||
|
For such machines, `FUNCTION_ARG' computes the register in which the caller
|
|||
|
passes the value, and `FUNCTION_INCOMING_ARG' should be defined in a similar
|
|||
|
fashion to tell the function being called where the arguments will arrive.
|
|||
|
|
|||
|
If `FUNCTION_INCOMING_ARG' is not defined, `FUNCTION_ARG' serves both
|
|||
|
purposes. */
|
|||
|
|
|||
|
#define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
|
|||
|
frv_function_arg (&CUM, MODE, TYPE, NAMED, TRUE)
|
|||
|
|
|||
|
/* A C type for declaring a variable that is used as the first argument of
|
|||
|
`FUNCTION_ARG' and other related values. For some target machines, the type
|
|||
|
`int' suffices and can hold the number of bytes of argument so far.
|
|||
|
|
|||
|
There is no need to record in `CUMULATIVE_ARGS' anything about the arguments
|
|||
|
that have been passed on the stack. The compiler has other variables to
|
|||
|
keep track of that. For target machines on which all arguments are passed
|
|||
|
on the stack, there is no need to store anything in `CUMULATIVE_ARGS';
|
|||
|
however, the data structure must exist and should not be empty, so use
|
|||
|
`int'. */
|
|||
|
#define CUMULATIVE_ARGS int
|
|||
|
|
|||
|
/* A C statement (sans semicolon) for initializing the variable CUM for the
|
|||
|
state at the beginning of the argument list. The variable has type
|
|||
|
`CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type
|
|||
|
of the function which will receive the args, or 0 if the args are to a
|
|||
|
compiler support library function. The value of INDIRECT is nonzero when
|
|||
|
processing an indirect call, for example a call through a function pointer.
|
|||
|
The value of INDIRECT is zero for a call to an explicitly named function, a
|
|||
|
library function call, or when `INIT_CUMULATIVE_ARGS' is used to find
|
|||
|
arguments for the function being compiled.
|
|||
|
|
|||
|
When processing a call to a compiler support library function, LIBNAME
|
|||
|
identifies which one. It is a `symbol_ref' rtx which contains the name of
|
|||
|
the function, as a string. LIBNAME is 0 when an ordinary C function call is
|
|||
|
being processed. Thus, each time this macro is called, either LIBNAME or
|
|||
|
FNTYPE is nonzero, but never both of them at once. */
|
|||
|
|
|||
|
#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
|
|||
|
frv_init_cumulative_args (&CUM, FNTYPE, LIBNAME, FNDECL, FALSE)
|
|||
|
|
|||
|
/* Like `INIT_CUMULATIVE_ARGS' but overrides it for the purposes of finding the
|
|||
|
arguments for the function being compiled. If this macro is undefined,
|
|||
|
`INIT_CUMULATIVE_ARGS' is used instead.
|
|||
|
|
|||
|
The value passed for LIBNAME is always 0, since library routines with
|
|||
|
special calling conventions are never compiled with GCC. The argument
|
|||
|
LIBNAME exists for symmetry with `INIT_CUMULATIVE_ARGS'. */
|
|||
|
|
|||
|
#define INIT_CUMULATIVE_INCOMING_ARGS(CUM, FNTYPE, LIBNAME) \
|
|||
|
frv_init_cumulative_args (&CUM, FNTYPE, LIBNAME, NULL, TRUE)
|
|||
|
|
|||
|
/* A C statement (sans semicolon) to update the summarizer variable CUM to
|
|||
|
advance past an argument in the argument list. The values MODE, TYPE and
|
|||
|
NAMED describe that argument. Once this is done, the variable CUM is
|
|||
|
suitable for analyzing the *following* argument with `FUNCTION_ARG', etc.
|
|||
|
|
|||
|
This macro need not do anything if the argument in question was passed on
|
|||
|
the stack. The compiler knows how to track the amount of stack space used
|
|||
|
for arguments without any special help. */
|
|||
|
#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
|
|||
|
frv_function_arg_advance (&CUM, MODE, TYPE, NAMED)
|
|||
|
|
|||
|
/* If defined, a C expression that gives the alignment boundary, in bits, of an
|
|||
|
argument with the specified mode and type. If it is not defined,
|
|||
|
`PARM_BOUNDARY' is used for all arguments. */
|
|||
|
|
|||
|
#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
|
|||
|
frv_function_arg_boundary (MODE, TYPE)
|
|||
|
|
|||
|
/* A C expression that is nonzero if REGNO is the number of a hard register in
|
|||
|
which function arguments are sometimes passed. This does *not* include
|
|||
|
implicit arguments such as the static chain and the structure-value address.
|
|||
|
On many machines, no registers can be used for this purpose since all
|
|||
|
function arguments are pushed on the stack. */
|
|||
|
#define FUNCTION_ARG_REGNO_P(REGNO) \
|
|||
|
((REGNO) >= FIRST_ARG_REGNUM && ((REGNO) <= LAST_ARG_REGNUM))
|
|||
|
|
|||
|
|
|||
|
/* How Scalar Function Values are Returned. */
|
|||
|
|
|||
|
/* The number of the hard register that is used to return a scalar value from a
|
|||
|
function call. */
|
|||
|
#define RETURN_VALUE_REGNUM (GPR_FIRST + 8)
|
|||
|
|
|||
|
#define FUNCTION_VALUE_REGNO_P(REGNO) frv_function_value_regno_p (REGNO)
|
|||
|
|
|||
|
|
|||
|
/* How Large Values are Returned. */
|
|||
|
|
|||
|
/* The number of the register that is used to pass the structure
|
|||
|
value address. */
|
|||
|
#define FRV_STRUCT_VALUE_REGNUM (GPR_FIRST + 3)
|
|||
|
|
|||
|
|
|||
|
/* Function Entry and Exit. */
|
|||
|
|
|||
|
/* Define this macro as a C expression that is nonzero if the return
|
|||
|
instruction or the function epilogue ignores the value of the stack pointer;
|
|||
|
in other words, if it is safe to delete an instruction to adjust the stack
|
|||
|
pointer before a return from the function.
|
|||
|
|
|||
|
Note that this macro's value is relevant only for functions for which frame
|
|||
|
pointers are maintained. It is never safe to delete a final stack
|
|||
|
adjustment in a function that has no frame pointer, and the compiler knows
|
|||
|
this regardless of `EXIT_IGNORE_STACK'. */
|
|||
|
#define EXIT_IGNORE_STACK 1
|
|||
|
|
|||
|
/* Generating Code for Profiling. */
|
|||
|
|
|||
|
/* A C statement or compound statement to output to FILE some assembler code to
|
|||
|
call the profiling subroutine `mcount'. Before calling, the assembler code
|
|||
|
must load the address of a counter variable into a register where `mcount'
|
|||
|
expects to find the address. The name of this variable is `LP' followed by
|
|||
|
the number LABELNO, so you would generate the name using `LP%d' in a
|
|||
|
`fprintf'.
|
|||
|
|
|||
|
The details of how the address should be passed to `mcount' are determined
|
|||
|
by your operating system environment, not by GCC. To figure them out,
|
|||
|
compile a small program for profiling using the system's installed C
|
|||
|
compiler and look at the assembler code that results.
|
|||
|
|
|||
|
This declaration must be present, but it can be an abort if profiling is
|
|||
|
not implemented. */
|
|||
|
|
|||
|
#define FUNCTION_PROFILER(FILE, LABELNO)
|
|||
|
|
|||
|
/* Trampolines for Nested Functions. */
|
|||
|
|
|||
|
/* A C expression for the size in bytes of the trampoline, as an integer. */
|
|||
|
#define TRAMPOLINE_SIZE frv_trampoline_size ()
|
|||
|
|
|||
|
/* Alignment required for trampolines, in bits.
|
|||
|
|
|||
|
If you don't define this macro, the value of `BIGGEST_ALIGNMENT' is used for
|
|||
|
aligning trampolines. */
|
|||
|
#define TRAMPOLINE_ALIGNMENT (TARGET_FDPIC ? 64 : 32)
|
|||
|
|
|||
|
/* Define this macro if trampolines need a special subroutine to do their work.
|
|||
|
The macro should expand to a series of `asm' statements which will be
|
|||
|
compiled with GCC. They go in a library function named
|
|||
|
`__transfer_from_trampoline'.
|
|||
|
|
|||
|
If you need to avoid executing the ordinary prologue code of a compiled C
|
|||
|
function when you jump to the subroutine, you can do so by placing a special
|
|||
|
label of your own in the assembler code. Use one `asm' statement to
|
|||
|
generate an assembler label, and another to make the label global. Then
|
|||
|
trampolines can use that label to jump directly to your special assembler
|
|||
|
code. */
|
|||
|
|
|||
|
#ifdef __FRV_UNDERSCORE__
|
|||
|
#define TRAMPOLINE_TEMPLATE_NAME "___trampoline_template"
|
|||
|
#else
|
|||
|
#define TRAMPOLINE_TEMPLATE_NAME "__trampoline_template"
|
|||
|
#endif
|
|||
|
|
|||
|
#define Twrite _write
|
|||
|
|
|||
|
#if ! __FRV_FDPIC__
|
|||
|
#define TRANSFER_FROM_TRAMPOLINE \
|
|||
|
extern int Twrite (int, const void *, unsigned); \
|
|||
|
\
|
|||
|
void \
|
|||
|
__trampoline_setup (short * addr, int size, int fnaddr, int sc) \
|
|||
|
{ \
|
|||
|
extern short __trampoline_template[]; \
|
|||
|
short * to = addr; \
|
|||
|
short * from = &__trampoline_template[0]; \
|
|||
|
int i; \
|
|||
|
\
|
|||
|
if (size < 20) \
|
|||
|
{ \
|
|||
|
Twrite (2, "__trampoline_setup bad size\n", \
|
|||
|
sizeof ("__trampoline_setup bad size\n") - 1); \
|
|||
|
exit (-1); \
|
|||
|
} \
|
|||
|
\
|
|||
|
to[0] = from[0]; \
|
|||
|
to[1] = (short)(fnaddr); \
|
|||
|
to[2] = from[2]; \
|
|||
|
to[3] = (short)(sc); \
|
|||
|
to[4] = from[4]; \
|
|||
|
to[5] = (short)(fnaddr >> 16); \
|
|||
|
to[6] = from[6]; \
|
|||
|
to[7] = (short)(sc >> 16); \
|
|||
|
to[8] = from[8]; \
|
|||
|
to[9] = from[9]; \
|
|||
|
\
|
|||
|
for (i = 0; i < 20; i++) \
|
|||
|
__asm__ volatile ("dcf @(%0,%1)\n\tici @(%0,%1)" :: "r" (to), "r" (i)); \
|
|||
|
} \
|
|||
|
\
|
|||
|
__asm__("\n" \
|
|||
|
"\t.globl " TRAMPOLINE_TEMPLATE_NAME "\n" \
|
|||
|
"\t.text\n" \
|
|||
|
TRAMPOLINE_TEMPLATE_NAME ":\n" \
|
|||
|
"\tsetlos #0, gr6\n" /* jump register */ \
|
|||
|
"\tsetlos #0, gr7\n" /* static chain */ \
|
|||
|
"\tsethi #0, gr6\n" \
|
|||
|
"\tsethi #0, gr7\n" \
|
|||
|
"\tjmpl @(gr0,gr6)\n");
|
|||
|
#else
|
|||
|
#define TRANSFER_FROM_TRAMPOLINE \
|
|||
|
extern int Twrite (int, const void *, unsigned); \
|
|||
|
\
|
|||
|
void \
|
|||
|
__trampoline_setup (addr, size, fnaddr, sc) \
|
|||
|
short * addr; \
|
|||
|
int size; \
|
|||
|
int fnaddr; \
|
|||
|
int sc; \
|
|||
|
{ \
|
|||
|
extern short __trampoline_template[]; \
|
|||
|
short * from = &__trampoline_template[0]; \
|
|||
|
int i; \
|
|||
|
short **desc = (short **)addr; \
|
|||
|
short * to = addr + 4; \
|
|||
|
\
|
|||
|
if (size != 32) \
|
|||
|
{ \
|
|||
|
Twrite (2, "__trampoline_setup bad size\n", \
|
|||
|
sizeof ("__trampoline_setup bad size\n") - 1); \
|
|||
|
exit (-1); \
|
|||
|
} \
|
|||
|
\
|
|||
|
/* Create a function descriptor with the address of the code below
|
|||
|
and NULL as the FDPIC value. We don't need the real GOT value
|
|||
|
here, since we don't use it, so we use NULL, that is just as
|
|||
|
good. */ \
|
|||
|
desc[0] = to; \
|
|||
|
desc[1] = NULL; \
|
|||
|
size -= 8; \
|
|||
|
\
|
|||
|
to[0] = from[0]; \
|
|||
|
to[1] = (short)(fnaddr); \
|
|||
|
to[2] = from[2]; \
|
|||
|
to[3] = (short)(sc); \
|
|||
|
to[4] = from[4]; \
|
|||
|
to[5] = (short)(fnaddr >> 16); \
|
|||
|
to[6] = from[6]; \
|
|||
|
to[7] = (short)(sc >> 16); \
|
|||
|
to[8] = from[8]; \
|
|||
|
to[9] = from[9]; \
|
|||
|
to[10] = from[10]; \
|
|||
|
to[11] = from[11]; \
|
|||
|
\
|
|||
|
for (i = 0; i < size; i++) \
|
|||
|
__asm__ volatile ("dcf @(%0,%1)\n\tici @(%0,%1)" :: "r" (to), "r" (i)); \
|
|||
|
} \
|
|||
|
\
|
|||
|
__asm__("\n" \
|
|||
|
"\t.globl " TRAMPOLINE_TEMPLATE_NAME "\n" \
|
|||
|
"\t.text\n" \
|
|||
|
TRAMPOLINE_TEMPLATE_NAME ":\n" \
|
|||
|
"\tsetlos #0, gr6\n" /* Jump register. */ \
|
|||
|
"\tsetlos #0, gr7\n" /* Static chain. */ \
|
|||
|
"\tsethi #0, gr6\n" \
|
|||
|
"\tsethi #0, gr7\n" \
|
|||
|
"\tldd @(gr6,gr0),gr14\n" \
|
|||
|
"\tjmpl @(gr14,gr0)\n" \
|
|||
|
);
|
|||
|
#endif
|
|||
|
|
|||
|
|
|||
|
/* Addressing Modes. */
|
|||
|
|
|||
|
/* A number, the maximum number of registers that can appear in a valid memory
|
|||
|
address. Note that it is up to you to specify a value equal to the maximum
|
|||
|
number that `TARGET_LEGITIMATE_ADDRESS_P' would ever accept. */
|
|||
|
#define MAX_REGS_PER_ADDRESS 2
|
|||
|
|
|||
|
/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
|
|||
|
use as a base register. For hard registers, it should always accept those
|
|||
|
which the hardware permits and reject the others. Whether the macro accepts
|
|||
|
or rejects pseudo registers must be controlled by `REG_OK_STRICT' as
|
|||
|
described above. This usually requires two variant definitions, of which
|
|||
|
`REG_OK_STRICT' controls the one actually used. */
|
|||
|
#ifdef REG_OK_STRICT
|
|||
|
#define REG_OK_FOR_BASE_P(X) GPR_P (REGNO (X))
|
|||
|
#else
|
|||
|
#define REG_OK_FOR_BASE_P(X) GPR_AP_OR_PSEUDO_P (REGNO (X))
|
|||
|
#endif
|
|||
|
|
|||
|
/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
|
|||
|
use as an index register.
|
|||
|
|
|||
|
The difference between an index register and a base register is that the
|
|||
|
index register may be scaled. If an address involves the sum of two
|
|||
|
registers, neither one of them scaled, then either one may be labeled the
|
|||
|
"base" and the other the "index"; but whichever labeling is used must fit
|
|||
|
the machine's constraints of which registers may serve in each capacity.
|
|||
|
The compiler will try both labelings, looking for one that is valid, and
|
|||
|
will reload one or both registers only if neither labeling works. */
|
|||
|
#define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
|
|||
|
|
|||
|
#define FIND_BASE_TERM frv_find_base_term
|
|||
|
|
|||
|
/* A C expression that is nonzero if X is a legitimate constant for an
|
|||
|
immediate operand on the target machine. You can assume that X satisfies
|
|||
|
`CONSTANT_P', so you need not check this. In fact, `1' is a suitable
|
|||
|
definition for this macro on machines where anything `CONSTANT_P' is valid. */
|
|||
|
#define LEGITIMATE_CONSTANT_P(X) frv_legitimate_constant_p (X)
|
|||
|
|
|||
|
/* The load-and-update commands allow pre-modification in addresses.
|
|||
|
The index has to be in a register. */
|
|||
|
#define HAVE_PRE_MODIFY_REG 1
|
|||
|
|
|||
|
|
|||
|
/* We define extra CC modes in frv-modes.def so we need a selector. */
|
|||
|
|
|||
|
#define SELECT_CC_MODE frv_select_cc_mode
|
|||
|
|
|||
|
/* A C expression whose value is one if it is always safe to reverse a
|
|||
|
comparison whose mode is MODE. If `SELECT_CC_MODE' can ever return MODE for
|
|||
|
a floating-point inequality comparison, then `REVERSIBLE_CC_MODE (MODE)'
|
|||
|
must be zero.
|
|||
|
|
|||
|
You need not define this macro if it would always returns zero or if the
|
|||
|
floating-point format is anything other than `IEEE_FLOAT_FORMAT'. For
|
|||
|
example, here is the definition used on the SPARC, where floating-point
|
|||
|
inequality comparisons are always given `CCFPEmode':
|
|||
|
|
|||
|
#define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode) */
|
|||
|
|
|||
|
/* On frv, don't consider floating point comparisons to be reversible. In
|
|||
|
theory, fp equality comparisons can be reversible. */
|
|||
|
#define REVERSIBLE_CC_MODE(MODE) \
|
|||
|
((MODE) == CCmode || (MODE) == CC_UNSmode || (MODE) == CC_NZmode)
|
|||
|
|
|||
|
/* Frv CCR_MODE's are not reversible. */
|
|||
|
#define REVERSE_CONDEXEC_PREDICATES_P(x,y) 0
|
|||
|
|
|||
|
|
|||
|
/* Describing Relative Costs of Operations. */
|
|||
|
|
|||
|
/* A C expression for the cost of moving data from a register in class FROM to
|
|||
|
one in class TO. The classes are expressed using the enumeration values
|
|||
|
such as `GENERAL_REGS'. A value of 4 is the default; other values are
|
|||
|
interpreted relative to that.
|
|||
|
|
|||
|
It is not required that the cost always equal 2 when FROM is the same as TO;
|
|||
|
on some machines it is expensive to move between registers if they are not
|
|||
|
general registers.
|
|||
|
|
|||
|
If reload sees an insn consisting of a single `set' between two hard
|
|||
|
registers, and if `REGISTER_MOVE_COST' applied to their classes returns a
|
|||
|
value of 2, reload does not check to ensure that the constraints of the insn
|
|||
|
are met. Setting a cost of other than 2 will allow reload to verify that
|
|||
|
the constraints are met. You should do this if the `movM' pattern's
|
|||
|
constraints do not allow such copying. */
|
|||
|
#define REGISTER_MOVE_COST(MODE, FROM, TO) frv_register_move_cost (FROM, TO)
|
|||
|
|
|||
|
/* A C expression for the cost of moving data of mode M between a register and
|
|||
|
memory. A value of 2 is the default; this cost is relative to those in
|
|||
|
`REGISTER_MOVE_COST'.
|
|||
|
|
|||
|
If moving between registers and memory is more expensive than between two
|
|||
|
registers, you should define this macro to express the relative cost. */
|
|||
|
#define MEMORY_MOVE_COST(M,C,I) 4
|
|||
|
|
|||
|
/* A C expression for the cost of a branch instruction. A value of 1 is the
|
|||
|
default; other values are interpreted relative to that. */
|
|||
|
#define BRANCH_COST(speed_p, predictable_p) frv_branch_cost_int
|
|||
|
|
|||
|
/* Define this macro as a C expression which is nonzero if accessing less than
|
|||
|
a word of memory (i.e. a `char' or a `short') is no faster than accessing a
|
|||
|
word of memory, i.e., if such access require more than one instruction or if
|
|||
|
there is no difference in cost between byte and (aligned) word loads.
|
|||
|
|
|||
|
When this macro is not defined, the compiler will access a field by finding
|
|||
|
the smallest containing object; when it is defined, a fullword load will be
|
|||
|
used if alignment permits. Unless bytes accesses are faster than word
|
|||
|
accesses, using word accesses is preferable since it may eliminate
|
|||
|
subsequent memory access if subsequent accesses occur to other fields in the
|
|||
|
same word of the structure, but to different bytes. */
|
|||
|
#define SLOW_BYTE_ACCESS 1
|
|||
|
|
|||
|
/* Define this macro if it is as good or better to call a constant function
|
|||
|
address than to call an address kept in a register. */
|
|||
|
#define NO_FUNCTION_CSE
|
|||
|
|
|||
|
|
|||
|
/* Dividing the output into sections. */
|
|||
|
|
|||
|
/* A C expression whose value is a string containing the assembler operation
|
|||
|
that should precede instructions and read-only data. Normally `".text"' is
|
|||
|
right. */
|
|||
|
#define TEXT_SECTION_ASM_OP "\t.text"
|
|||
|
|
|||
|
/* A C expression whose value is a string containing the assembler operation to
|
|||
|
identify the following data as writable initialized data. Normally
|
|||
|
`".data"' is right. */
|
|||
|
#define DATA_SECTION_ASM_OP "\t.data"
|
|||
|
|
|||
|
/* If defined, a C expression whose value is a string containing the
|
|||
|
assembler operation to identify the following data as
|
|||
|
uninitialized global data. If not defined, and neither
|
|||
|
`ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
|
|||
|
uninitialized global data will be output in the data section if
|
|||
|
`-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
|
|||
|
used. */
|
|||
|
#define BSS_SECTION_ASM_OP "\t.section .bss,\"aw\""
|
|||
|
|
|||
|
/* Short Data Support */
|
|||
|
#define SDATA_SECTION_ASM_OP "\t.section .sdata,\"aw\""
|
|||
|
|
|||
|
/* On svr4, we *do* have support for the .init and .fini sections, and we
|
|||
|
can put stuff in there to be executed before and after `main'. We let
|
|||
|
crtstuff.c and other files know this by defining the following symbols.
|
|||
|
The definitions say how to change sections to the .init and .fini
|
|||
|
sections. This is the same for all known svr4 assemblers.
|
|||
|
|
|||
|
The standard System V.4 macros will work, but they look ugly in the
|
|||
|
assembly output, so redefine them. */
|
|||
|
|
|||
|
#undef INIT_SECTION_ASM_OP
|
|||
|
#undef FINI_SECTION_ASM_OP
|
|||
|
#define INIT_SECTION_ASM_OP "\t.section .init,\"ax\""
|
|||
|
#define FINI_SECTION_ASM_OP "\t.section .fini,\"ax\""
|
|||
|
|
|||
|
#undef CTORS_SECTION_ASM_OP
|
|||
|
#undef DTORS_SECTION_ASM_OP
|
|||
|
#define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"a\""
|
|||
|
#define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"a\""
|
|||
|
|
|||
|
/* A C expression whose value is a string containing the assembler operation to
|
|||
|
switch to the fixup section that records all initialized pointers in a -fpic
|
|||
|
program so they can be changed program startup time if the program is loaded
|
|||
|
at a different address than linked for. */
|
|||
|
#define FIXUP_SECTION_ASM_OP "\t.section .rofixup,\"a\""
|
|||
|
|
|||
|
/* Position Independent Code. */
|
|||
|
|
|||
|
/* A C expression that is nonzero if X is a legitimate immediate operand on the
|
|||
|
target machine when generating position independent code. You can assume
|
|||
|
that X satisfies `CONSTANT_P', so you need not check this. You can also
|
|||
|
assume FLAG_PIC is true, so you need not check it either. You need not
|
|||
|
define this macro if all constants (including `SYMBOL_REF') can be immediate
|
|||
|
operands when generating position independent code. */
|
|||
|
#define LEGITIMATE_PIC_OPERAND_P(X) \
|
|||
|
( GET_CODE (X) == CONST_INT \
|
|||
|
|| GET_CODE (X) == CONST_DOUBLE \
|
|||
|
|| (GET_CODE (X) == HIGH && GET_CODE (XEXP (X, 0)) == CONST_INT) \
|
|||
|
|| got12_operand (X, VOIDmode)) \
|
|||
|
|
|||
|
|
|||
|
/* The Overall Framework of an Assembler File. */
|
|||
|
|
|||
|
/* A C string constant describing how to begin a comment in the target
|
|||
|
assembler language. The compiler assumes that the comment will end at the
|
|||
|
end of the line. */
|
|||
|
#define ASM_COMMENT_START ";"
|
|||
|
|
|||
|
/* A C string constant for text to be output before each `asm' statement or
|
|||
|
group of consecutive ones. Normally this is `"#APP"', which is a comment
|
|||
|
that has no effect on most assemblers but tells the GNU assembler that it
|
|||
|
must check the lines that follow for all valid assembler constructs. */
|
|||
|
#define ASM_APP_ON "#APP\n"
|
|||
|
|
|||
|
/* A C string constant for text to be output after each `asm' statement or
|
|||
|
group of consecutive ones. Normally this is `"#NO_APP"', which tells the
|
|||
|
GNU assembler to resume making the time-saving assumptions that are valid
|
|||
|
for ordinary compiler output. */
|
|||
|
#define ASM_APP_OFF "#NO_APP\n"
|
|||
|
|
|||
|
|
|||
|
/* Output of Data. */
|
|||
|
|
|||
|
/* This is how to output a label to dwarf/dwarf2. */
|
|||
|
#define ASM_OUTPUT_DWARF_ADDR(STREAM, LABEL) \
|
|||
|
do { \
|
|||
|
fprintf (STREAM, "\t.picptr\t"); \
|
|||
|
assemble_name (STREAM, LABEL); \
|
|||
|
} while (0)
|
|||
|
|
|||
|
/* Whether to emit the gas specific dwarf2 line number support. */
|
|||
|
#define DWARF2_ASM_LINE_DEBUG_INFO (TARGET_DEBUG_LOC)
|
|||
|
|
|||
|
/* Output of Uninitialized Variables. */
|
|||
|
|
|||
|
/* A C statement (sans semicolon) to output to the stdio stream STREAM the
|
|||
|
assembler definition of a local-common-label named NAME whose size is SIZE
|
|||
|
bytes. The variable ROUNDED is the size rounded up to whatever alignment
|
|||
|
the caller wants.
|
|||
|
|
|||
|
Use the expression `assemble_name (STREAM, NAME)' to output the name itself;
|
|||
|
before and after that, output the additional assembler syntax for defining
|
|||
|
the name, and a newline.
|
|||
|
|
|||
|
This macro controls how the assembler definitions of uninitialized static
|
|||
|
variables are output. */
|
|||
|
#undef ASM_OUTPUT_LOCAL
|
|||
|
|
|||
|
/* Like `ASM_OUTPUT_LOCAL' except takes the required alignment as a separate,
|
|||
|
explicit argument. If you define this macro, it is used in place of
|
|||
|
`ASM_OUTPUT_LOCAL', and gives you more flexibility in handling the required
|
|||
|
alignment of the variable. The alignment is specified as the number of
|
|||
|
bits.
|
|||
|
|
|||
|
Defined in svr4.h. */
|
|||
|
#undef ASM_OUTPUT_ALIGNED_LOCAL
|
|||
|
|
|||
|
/* This is for final.c, because it is used by ASM_DECLARE_OBJECT_NAME. */
|
|||
|
extern int size_directive_output;
|
|||
|
|
|||
|
/* Like `ASM_OUTPUT_ALIGNED_LOCAL' except that it takes an additional
|
|||
|
parameter - the DECL of variable to be output, if there is one.
|
|||
|
This macro can be called with DECL == NULL_TREE. If you define
|
|||
|
this macro, it is used in place of `ASM_OUTPUT_LOCAL' and
|
|||
|
`ASM_OUTPUT_ALIGNED_LOCAL', and gives you more flexibility in
|
|||
|
handling the destination of the variable. */
|
|||
|
#undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
|
|||
|
#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(STREAM, DECL, NAME, SIZE, ALIGN) \
|
|||
|
do { \
|
|||
|
if ((SIZE) > 0 && (SIZE) <= g_switch_value) \
|
|||
|
switch_to_section (get_named_section (NULL, ".sbss", 0)); \
|
|||
|
else \
|
|||
|
switch_to_section (bss_section); \
|
|||
|
ASM_OUTPUT_ALIGN (STREAM, floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
|
|||
|
ASM_DECLARE_OBJECT_NAME (STREAM, NAME, DECL); \
|
|||
|
ASM_OUTPUT_SKIP (STREAM, (SIZE) ? (SIZE) : 1); \
|
|||
|
} while (0)
|
|||
|
|
|||
|
|
|||
|
/* Output and Generation of Labels. */
|
|||
|
|
|||
|
/* A C statement (sans semicolon) to output to the stdio stream STREAM the
|
|||
|
assembler definition of a label named NAME. Use the expression
|
|||
|
`assemble_name (STREAM, NAME)' to output the name itself; before and after
|
|||
|
that, output the additional assembler syntax for defining the name, and a
|
|||
|
newline. */
|
|||
|
#define ASM_OUTPUT_LABEL(STREAM, NAME) \
|
|||
|
do { \
|
|||
|
assemble_name (STREAM, NAME); \
|
|||
|
fputs (":\n", STREAM); \
|
|||
|
} while (0)
|
|||
|
|
|||
|
/* Globalizing directive for a label. */
|
|||
|
#define GLOBAL_ASM_OP "\t.globl "
|
|||
|
|
|||
|
/* A C statement to store into the string STRING a label whose name is made
|
|||
|
from the string PREFIX and the number NUM.
|
|||
|
|
|||
|
This string, when output subsequently by `assemble_name', should produce the
|
|||
|
output that `(*targetm.asm_out.internal_label)' would produce with the same PREFIX
|
|||
|
and NUM.
|
|||
|
|
|||
|
If the string begins with `*', then `assemble_name' will output the rest of
|
|||
|
the string unchanged. It is often convenient for
|
|||
|
`ASM_GENERATE_INTERNAL_LABEL' to use `*' in this way. If the string doesn't
|
|||
|
start with `*', then `ASM_OUTPUT_LABELREF' gets to output the string, and
|
|||
|
may change it. (Of course, `ASM_OUTPUT_LABELREF' is also part of your
|
|||
|
machine description, so you should know what it does on your machine.)
|
|||
|
|
|||
|
Defined in svr4.h. */
|
|||
|
#undef ASM_GENERATE_INTERNAL_LABEL
|
|||
|
#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
|
|||
|
do { \
|
|||
|
sprintf (LABEL, "*.%s%ld", PREFIX, (long)NUM); \
|
|||
|
} while (0)
|
|||
|
|
|||
|
|
|||
|
/* Macros Controlling Initialization Routines. */
|
|||
|
|
|||
|
/* If defined, a C string constant for the assembler operation to identify the
|
|||
|
following data as initialization code. If not defined, GCC will assume
|
|||
|
such a section does not exist. When you are using special sections for
|
|||
|
initialization and termination functions, this macro also controls how
|
|||
|
`crtstuff.c' and `libgcc2.c' arrange to run the initialization functions.
|
|||
|
|
|||
|
Defined in svr4.h. */
|
|||
|
#undef INIT_SECTION_ASM_OP
|
|||
|
|
|||
|
/* If defined, `main' will call `__main' despite the presence of
|
|||
|
`INIT_SECTION_ASM_OP'. This macro should be defined for systems where the
|
|||
|
init section is not actually run automatically, but is still useful for
|
|||
|
collecting the lists of constructors and destructors. */
|
|||
|
#define INVOKE__main
|
|||
|
|
|||
|
/* Output of Assembler Instructions. */
|
|||
|
|
|||
|
/* A C initializer containing the assembler's names for the machine registers,
|
|||
|
each one as a C string constant. This is what translates register numbers
|
|||
|
in the compiler into assembler language. */
|
|||
|
#define REGISTER_NAMES \
|
|||
|
{ \
|
|||
|
"gr0", "sp", "fp", "gr3", "gr4", "gr5", "gr6", "gr7", \
|
|||
|
"gr8", "gr9", "gr10", "gr11", "gr12", "gr13", "gr14", "gr15", \
|
|||
|
"gr16", "gr17", "gr18", "gr19", "gr20", "gr21", "gr22", "gr23", \
|
|||
|
"gr24", "gr25", "gr26", "gr27", "gr28", "gr29", "gr30", "gr31", \
|
|||
|
"gr32", "gr33", "gr34", "gr35", "gr36", "gr37", "gr38", "gr39", \
|
|||
|
"gr40", "gr41", "gr42", "gr43", "gr44", "gr45", "gr46", "gr47", \
|
|||
|
"gr48", "gr49", "gr50", "gr51", "gr52", "gr53", "gr54", "gr55", \
|
|||
|
"gr56", "gr57", "gr58", "gr59", "gr60", "gr61", "gr62", "gr63", \
|
|||
|
\
|
|||
|
"fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \
|
|||
|
"fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \
|
|||
|
"fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \
|
|||
|
"fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", \
|
|||
|
"fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", \
|
|||
|
"fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", \
|
|||
|
"fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", \
|
|||
|
"fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", \
|
|||
|
\
|
|||
|
"fcc0", "fcc1", "fcc2", "fcc3", "icc0", "icc1", "icc2", "icc3", \
|
|||
|
"cc0", "cc1", "cc2", "cc3", "cc4", "cc5", "cc6", "cc7", \
|
|||
|
"acc0", "acc1", "acc2", "acc3", "acc4", "acc5", "acc6", "acc7", \
|
|||
|
"acc8", "acc9", "acc10", "acc11", \
|
|||
|
"accg0","accg1","accg2","accg3","accg4","accg5","accg6","accg7", \
|
|||
|
"accg8", "accg9", "accg10", "accg11", \
|
|||
|
"ap", "lr", "lcr", "iacc0h", "iacc0l" \
|
|||
|
}
|
|||
|
|
|||
|
/* Define this macro if you are using an unusual assembler that
|
|||
|
requires different names for the machine instructions.
|
|||
|
|
|||
|
The definition is a C statement or statements which output an
|
|||
|
assembler instruction opcode to the stdio stream STREAM. The
|
|||
|
macro-operand PTR is a variable of type `char *' which points to
|
|||
|
the opcode name in its "internal" form--the form that is written
|
|||
|
in the machine description. The definition should output the
|
|||
|
opcode name to STREAM, performing any translation you desire, and
|
|||
|
increment the variable PTR to point at the end of the opcode so
|
|||
|
that it will not be output twice.
|
|||
|
|
|||
|
In fact, your macro definition may process less than the entire
|
|||
|
opcode name, or more than the opcode name; but if you want to
|
|||
|
process text that includes `%'-sequences to substitute operands,
|
|||
|
you must take care of the substitution yourself. Just be sure to
|
|||
|
increment PTR over whatever text should not be output normally.
|
|||
|
|
|||
|
If you need to look at the operand values, they can be found as the
|
|||
|
elements of `recog_operand'.
|
|||
|
|
|||
|
If the macro definition does nothing, the instruction is output in
|
|||
|
the usual way. */
|
|||
|
|
|||
|
#define ASM_OUTPUT_OPCODE(STREAM, PTR)\
|
|||
|
(PTR) = frv_asm_output_opcode (STREAM, PTR)
|
|||
|
|
|||
|
/* If defined, a C statement to be executed just prior to the output
|
|||
|
of assembler code for INSN, to modify the extracted operands so
|
|||
|
they will be output differently.
|
|||
|
|
|||
|
Here the argument OPVEC is the vector containing the operands
|
|||
|
extracted from INSN, and NOPERANDS is the number of elements of
|
|||
|
the vector which contain meaningful data for this insn. The
|
|||
|
contents of this vector are what will be used to convert the insn
|
|||
|
template into assembler code, so you can change the assembler
|
|||
|
output by changing the contents of the vector.
|
|||
|
|
|||
|
This macro is useful when various assembler syntaxes share a single
|
|||
|
file of instruction patterns; by defining this macro differently,
|
|||
|
you can cause a large class of instructions to be output
|
|||
|
differently (such as with rearranged operands). Naturally,
|
|||
|
variations in assembler syntax affecting individual insn patterns
|
|||
|
ought to be handled by writing conditional output routines in
|
|||
|
those patterns.
|
|||
|
|
|||
|
If this macro is not defined, it is equivalent to a null statement. */
|
|||
|
|
|||
|
#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS)\
|
|||
|
frv_final_prescan_insn (INSN, OPVEC, NOPERANDS)
|
|||
|
|
|||
|
|
|||
|
/* A C compound statement to output to stdio stream STREAM the assembler syntax
|
|||
|
for an instruction operand X. X is an RTL expression.
|
|||
|
|
|||
|
CODE is a value that can be used to specify one of several ways of printing
|
|||
|
the operand. It is used when identical operands must be printed differently
|
|||
|
depending on the context. CODE comes from the `%' specification that was
|
|||
|
used to request printing of the operand. If the specification was just
|
|||
|
`%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is
|
|||
|
the ASCII code for LTR.
|
|||
|
|
|||
|
If X is a register, this macro should print the register's name. The names
|
|||
|
can be found in an array `reg_names' whose type is `char *[]'. `reg_names'
|
|||
|
is initialized from `REGISTER_NAMES'.
|
|||
|
|
|||
|
When the machine description has a specification `%PUNCT' (a `%' followed by
|
|||
|
a punctuation character), this macro is called with a null pointer for X and
|
|||
|
the punctuation character for CODE. */
|
|||
|
#define PRINT_OPERAND(STREAM, X, CODE) frv_print_operand (STREAM, X, CODE)
|
|||
|
|
|||
|
/* A C expression which evaluates to true if CODE is a valid punctuation
|
|||
|
character for use in the `PRINT_OPERAND' macro. If
|
|||
|
`PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation
|
|||
|
characters (except for the standard one, `%') are used in this way. */
|
|||
|
/* . == gr0
|
|||
|
# == hint operand -- always zero for now
|
|||
|
@ == small data base register (gr16)
|
|||
|
~ == pic register (gr17)
|
|||
|
* == temporary integer CCR register (cr3)
|
|||
|
& == temporary integer ICC register (icc3) */
|
|||
|
#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
|
|||
|
((CODE) == '.' || (CODE) == '#' || (CODE) == '@' || (CODE) == '~' \
|
|||
|
|| (CODE) == '*' || (CODE) == '&')
|
|||
|
|
|||
|
/* A C compound statement to output to stdio stream STREAM the assembler syntax
|
|||
|
for an instruction operand that is a memory reference whose address is X. X
|
|||
|
is an RTL expression.
|
|||
|
|
|||
|
On some machines, the syntax for a symbolic address depends on the section
|
|||
|
that the address refers to. On these machines, define the macro
|
|||
|
`ENCODE_SECTION_INFO' to store the information into the `symbol_ref', and
|
|||
|
then check for it here.
|
|||
|
|
|||
|
This declaration must be present. */
|
|||
|
#define PRINT_OPERAND_ADDRESS(STREAM, X) frv_print_operand_address (STREAM, X)
|
|||
|
|
|||
|
/* If defined, C string expressions to be used for the `%R', `%L', `%U', and
|
|||
|
`%I' options of `asm_fprintf' (see `final.c'). These are useful when a
|
|||
|
single `md' file must support multiple assembler formats. In that case, the
|
|||
|
various `tm.h' files can define these macros differently.
|
|||
|
|
|||
|
USER_LABEL_PREFIX is defined in svr4.h. */
|
|||
|
#undef USER_LABEL_PREFIX
|
|||
|
#define USER_LABEL_PREFIX ""
|
|||
|
#define REGISTER_PREFIX ""
|
|||
|
#define LOCAL_LABEL_PREFIX "."
|
|||
|
#define IMMEDIATE_PREFIX "#"
|
|||
|
|
|||
|
|
|||
|
/* Output of dispatch tables. */
|
|||
|
|
|||
|
/* This macro should be provided on machines where the addresses in a dispatch
|
|||
|
table are relative to the table's own address.
|
|||
|
|
|||
|
The definition should be a C statement to output to the stdio stream STREAM
|
|||
|
an assembler pseudo-instruction to generate a difference between two labels.
|
|||
|
VALUE and REL are the numbers of two internal labels. The definitions of
|
|||
|
these labels are output using `(*targetm.asm_out.internal_label)', and they must be
|
|||
|
printed in the same way here. For example,
|
|||
|
|
|||
|
fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */
|
|||
|
#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
|
|||
|
fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL)
|
|||
|
|
|||
|
/* This macro should be provided on machines where the addresses in a dispatch
|
|||
|
table are absolute.
|
|||
|
|
|||
|
The definition should be a C statement to output to the stdio stream STREAM
|
|||
|
an assembler pseudo-instruction to generate a reference to a label. VALUE
|
|||
|
is the number of an internal label whose definition is output using
|
|||
|
`(*targetm.asm_out.internal_label)'. For example,
|
|||
|
|
|||
|
fprintf (STREAM, "\t.word L%d\n", VALUE) */
|
|||
|
#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
|
|||
|
fprintf (STREAM, "\t.word .L%d\n", VALUE)
|
|||
|
|
|||
|
#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
|
|||
|
|
|||
|
/* Assembler Commands for Exception Regions. */
|
|||
|
|
|||
|
/* Define this macro to 0 if your target supports DWARF 2 frame unwind
|
|||
|
information, but it does not yet work with exception handling. Otherwise,
|
|||
|
if your target supports this information (if it defines
|
|||
|
`INCOMING_RETURN_ADDR_RTX' and either `UNALIGNED_INT_ASM_OP' or
|
|||
|
`OBJECT_FORMAT_ELF'), GCC will provide a default definition of 1.
|
|||
|
|
|||
|
If this macro is defined to 1, the DWARF 2 unwinder will be the default
|
|||
|
exception handling mechanism; otherwise, setjmp/longjmp will be used by
|
|||
|
default.
|
|||
|
|
|||
|
If this macro is defined to anything, the DWARF 2 unwinder will be used
|
|||
|
instead of inline unwinders and __unwind_function in the non-setjmp case. */
|
|||
|
#define DWARF2_UNWIND_INFO 1
|
|||
|
|
|||
|
#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (LR_REGNO)
|
|||
|
|
|||
|
/* Assembler Commands for Alignment. */
|
|||
|
|
|||
|
/* A C statement to output to the stdio stream STREAM an assembler instruction
|
|||
|
to advance the location counter by NBYTES bytes. Those bytes should be zero
|
|||
|
when loaded. NBYTES will be a C expression of type `int'.
|
|||
|
|
|||
|
Defined in svr4.h. */
|
|||
|
#undef ASM_OUTPUT_SKIP
|
|||
|
#define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
|
|||
|
fprintf (STREAM, "\t.zero\t%u\n", (int)(NBYTES))
|
|||
|
|
|||
|
/* A C statement to output to the stdio stream STREAM an assembler command to
|
|||
|
advance the location counter to a multiple of 2 to the POWER bytes. POWER
|
|||
|
will be a C expression of type `int'. */
|
|||
|
#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
|
|||
|
fprintf ((STREAM), "\t.p2align %d\n", (POWER))
|
|||
|
|
|||
|
/* Inside the text section, align with unpacked nops rather than zeros. */
|
|||
|
#define ASM_OUTPUT_ALIGN_WITH_NOP(STREAM, POWER) \
|
|||
|
fprintf ((STREAM), "\t.p2alignl %d,0x80880000\n", (POWER))
|
|||
|
|
|||
|
/* Macros Affecting all Debug Formats. */
|
|||
|
|
|||
|
/* A C expression that returns the DBX register number for the compiler
|
|||
|
register number REGNO. In simple cases, the value of this expression may be
|
|||
|
REGNO itself. But sometimes there are some registers that the compiler
|
|||
|
knows about and DBX does not, or vice versa. In such cases, some register
|
|||
|
may need to have one number in the compiler and another for DBX.
|
|||
|
|
|||
|
If two registers have consecutive numbers inside GCC, and they can be
|
|||
|
used as a pair to hold a multiword value, then they *must* have consecutive
|
|||
|
numbers after renumbering with `DBX_REGISTER_NUMBER'. Otherwise, debuggers
|
|||
|
will be unable to access such a pair, because they expect register pairs to
|
|||
|
be consecutive in their own numbering scheme.
|
|||
|
|
|||
|
If you find yourself defining `DBX_REGISTER_NUMBER' in way that does not
|
|||
|
preserve register pairs, then what you must do instead is redefine the
|
|||
|
actual register numbering scheme.
|
|||
|
|
|||
|
This declaration is required. */
|
|||
|
#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
|
|||
|
|
|||
|
/* A C expression that returns the type of debugging output GCC produces
|
|||
|
when the user specifies `-g' or `-ggdb'. Define this if you have arranged
|
|||
|
for GCC to support more than one format of debugging output. Currently,
|
|||
|
the allowable values are `DBX_DEBUG', `SDB_DEBUG', `DWARF_DEBUG',
|
|||
|
`DWARF2_DEBUG', and `XCOFF_DEBUG'.
|
|||
|
|
|||
|
The value of this macro only affects the default debugging output; the user
|
|||
|
can always get a specific type of output by using `-gstabs', `-gcoff',
|
|||
|
`-gdwarf-1', `-gdwarf-2', or `-gxcoff'.
|
|||
|
|
|||
|
Defined in svr4.h. */
|
|||
|
#undef PREFERRED_DEBUGGING_TYPE
|
|||
|
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
|
|||
|
|
|||
|
/* Miscellaneous Parameters. */
|
|||
|
|
|||
|
/* An alias for a machine mode name. This is the machine mode that elements of
|
|||
|
a jump-table should have. */
|
|||
|
#define CASE_VECTOR_MODE SImode
|
|||
|
|
|||
|
/* Define this macro if operations between registers with integral mode smaller
|
|||
|
than a word are always performed on the entire register. Most RISC machines
|
|||
|
have this property and most CISC machines do not. */
|
|||
|
#define WORD_REGISTER_OPERATIONS
|
|||
|
|
|||
|
/* Define this macro to be a C expression indicating when insns that read
|
|||
|
memory in MODE, an integral mode narrower than a word, set the bits outside
|
|||
|
of MODE to be either the sign-extension or the zero-extension of the data
|
|||
|
read. Return `SIGN_EXTEND' for values of MODE for which the insn
|
|||
|
sign-extends, `ZERO_EXTEND' for which it zero-extends, and `UNKNOWN' for other
|
|||
|
modes.
|
|||
|
|
|||
|
This macro is not called with MODE non-integral or with a width greater than
|
|||
|
or equal to `BITS_PER_WORD', so you may return any value in this case. Do
|
|||
|
not define this macro if it would always return `UNKNOWN'. On machines where
|
|||
|
this macro is defined, you will normally define it as the constant
|
|||
|
`SIGN_EXTEND' or `ZERO_EXTEND'. */
|
|||
|
#define LOAD_EXTEND_OP(MODE) SIGN_EXTEND
|
|||
|
|
|||
|
/* Define if loading short immediate values into registers sign extends. */
|
|||
|
#define SHORT_IMMEDIATES_SIGN_EXTEND
|
|||
|
|
|||
|
/* The maximum number of bytes that a single instruction can move quickly from
|
|||
|
memory to memory. */
|
|||
|
#define MOVE_MAX 8
|
|||
|
|
|||
|
/* A C expression which is nonzero if on this machine it is safe to "convert"
|
|||
|
an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller
|
|||
|
than INPREC) by merely operating on it as if it had only OUTPREC bits.
|
|||
|
|
|||
|
On many machines, this expression can be 1.
|
|||
|
|
|||
|
When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for modes for
|
|||
|
which `MODES_TIEABLE_P' is 0, suboptimal code can result. If this is the
|
|||
|
case, making `TRULY_NOOP_TRUNCATION' return 0 in such cases may improve
|
|||
|
things. */
|
|||
|
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
|
|||
|
|
|||
|
/* An alias for the machine mode for pointers. On most machines, define this
|
|||
|
to be the integer mode corresponding to the width of a hardware pointer;
|
|||
|
`SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines
|
|||
|
you must define this to be one of the partial integer modes, such as
|
|||
|
`PSImode'.
|
|||
|
|
|||
|
The width of `Pmode' must be at least as large as the value of
|
|||
|
`POINTER_SIZE'. If it is not equal, you must define the macro
|
|||
|
`POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */
|
|||
|
#define Pmode SImode
|
|||
|
|
|||
|
/* An alias for the machine mode used for memory references to functions being
|
|||
|
called, in `call' RTL expressions. On most machines this should be
|
|||
|
`QImode'. */
|
|||
|
#define FUNCTION_MODE QImode
|
|||
|
|
|||
|
/* Define this macro to handle System V style pragmas: #pragma pack and
|
|||
|
#pragma weak. Note, #pragma weak will only be supported if SUPPORT_WEAK is
|
|||
|
defined.
|
|||
|
|
|||
|
Defined in svr4.h. */
|
|||
|
#define HANDLE_SYSV_PRAGMA 1
|
|||
|
|
|||
|
/* A C expression for the maximum number of instructions to execute via
|
|||
|
conditional execution instructions instead of a branch. A value of
|
|||
|
BRANCH_COST+1 is the default if the machine does not use
|
|||
|
cc0, and 1 if it does use cc0. */
|
|||
|
#define MAX_CONDITIONAL_EXECUTE frv_condexec_insns
|
|||
|
|
|||
|
/* A C expression to modify the code described by the conditional if
|
|||
|
information CE_INFO, possibly updating the tests in TRUE_EXPR, and
|
|||
|
FALSE_EXPR for converting if-then and if-then-else code to conditional
|
|||
|
instructions. Set either TRUE_EXPR or FALSE_EXPR to a null pointer if the
|
|||
|
tests cannot be converted. */
|
|||
|
#define IFCVT_MODIFY_TESTS(CE_INFO, TRUE_EXPR, FALSE_EXPR) \
|
|||
|
frv_ifcvt_modify_tests (CE_INFO, &TRUE_EXPR, &FALSE_EXPR)
|
|||
|
|
|||
|
/* A C expression to modify the code described by the conditional if
|
|||
|
information CE_INFO, for the basic block BB, possibly updating the tests in
|
|||
|
TRUE_EXPR, and FALSE_EXPR for converting the && and || parts of if-then or
|
|||
|
if-then-else code to conditional instructions. OLD_TRUE and OLD_FALSE are
|
|||
|
the previous tests. Set either TRUE_EXPR or FALSE_EXPR to a null pointer if
|
|||
|
the tests cannot be converted. */
|
|||
|
#define IFCVT_MODIFY_MULTIPLE_TESTS(CE_INFO, BB, TRUE_EXPR, FALSE_EXPR) \
|
|||
|
frv_ifcvt_modify_multiple_tests (CE_INFO, BB, &TRUE_EXPR, &FALSE_EXPR)
|
|||
|
|
|||
|
/* A C expression to modify the code described by the conditional if
|
|||
|
information CE_INFO with the new PATTERN in INSN. If PATTERN is a null
|
|||
|
pointer after the IFCVT_MODIFY_INSN macro executes, it is assumed that that
|
|||
|
insn cannot be converted to be executed conditionally. */
|
|||
|
#define IFCVT_MODIFY_INSN(CE_INFO, PATTERN, INSN) \
|
|||
|
(PATTERN) = frv_ifcvt_modify_insn (CE_INFO, PATTERN, INSN)
|
|||
|
|
|||
|
/* A C expression to perform any final machine dependent modifications in
|
|||
|
converting code to conditional execution in the code described by the
|
|||
|
conditional if information CE_INFO. */
|
|||
|
#define IFCVT_MODIFY_FINAL(CE_INFO) frv_ifcvt_modify_final (CE_INFO)
|
|||
|
|
|||
|
/* A C expression to cancel any machine dependent modifications in converting
|
|||
|
code to conditional execution in the code described by the conditional if
|
|||
|
information CE_INFO. */
|
|||
|
#define IFCVT_MODIFY_CANCEL(CE_INFO) frv_ifcvt_modify_cancel (CE_INFO)
|
|||
|
|
|||
|
/* Initialize the extra fields provided by IFCVT_EXTRA_FIELDS. */
|
|||
|
#define IFCVT_INIT_EXTRA_FIELDS(CE_INFO) frv_ifcvt_init_extra_fields (CE_INFO)
|
|||
|
|
|||
|
/* The definition of the following macro results in that the 2nd jump
|
|||
|
optimization (after the 2nd insn scheduling) is minimal. It is
|
|||
|
necessary to define when start cycle marks of insns (TImode is used
|
|||
|
for this) is used for VLIW insn packing. Some jump optimizations
|
|||
|
make such marks invalid. These marks are corrected for some
|
|||
|
(minimal) optimizations. ??? Probably the macro is temporary.
|
|||
|
Final solution could making the 2nd jump optimizations before the
|
|||
|
2nd instruction scheduling or corrections of the marks for all jump
|
|||
|
optimizations. Although some jump optimizations are actually
|
|||
|
deoptimizations for VLIW (super-scalar) processors. */
|
|||
|
|
|||
|
#define MINIMAL_SECOND_JUMP_OPTIMIZATION
|
|||
|
|
|||
|
|
|||
|
/* If the following macro is defined and nonzero and deterministic
|
|||
|
finite state automata are used for pipeline hazard recognition, the
|
|||
|
code making resource-constrained software pipelining is on. */
|
|||
|
#define RCSP_SOFTWARE_PIPELINING 1
|
|||
|
|
|||
|
/* If the following macro is defined and nonzero and deterministic
|
|||
|
finite state automata are used for pipeline hazard recognition, we
|
|||
|
will try to exchange insns in queue ready to improve the schedule.
|
|||
|
The more macro value, the more tries will be made. */
|
|||
|
#define FIRST_CYCLE_MULTIPASS_SCHEDULING 1
|
|||
|
|
|||
|
/* The following macro is used only when value of
|
|||
|
FIRST_CYCLE_MULTIPASS_SCHEDULING is nonzero. The more macro value,
|
|||
|
the more tries will be made to choose better schedule. If the
|
|||
|
macro value is zero or negative there will be no multi-pass
|
|||
|
scheduling. */
|
|||
|
#define FIRST_CYCLE_MULTIPASS_SCHEDULING_LOOKAHEAD frv_sched_lookahead
|
|||
|
|
|||
|
enum frv_builtins
|
|||
|
{
|
|||
|
FRV_BUILTIN_MAND,
|
|||
|
FRV_BUILTIN_MOR,
|
|||
|
FRV_BUILTIN_MXOR,
|
|||
|
FRV_BUILTIN_MNOT,
|
|||
|
FRV_BUILTIN_MAVEH,
|
|||
|
FRV_BUILTIN_MSATHS,
|
|||
|
FRV_BUILTIN_MSATHU,
|
|||
|
FRV_BUILTIN_MADDHSS,
|
|||
|
FRV_BUILTIN_MADDHUS,
|
|||
|
FRV_BUILTIN_MSUBHSS,
|
|||
|
FRV_BUILTIN_MSUBHUS,
|
|||
|
FRV_BUILTIN_MPACKH,
|
|||
|
FRV_BUILTIN_MQADDHSS,
|
|||
|
FRV_BUILTIN_MQADDHUS,
|
|||
|
FRV_BUILTIN_MQSUBHSS,
|
|||
|
FRV_BUILTIN_MQSUBHUS,
|
|||
|
FRV_BUILTIN_MUNPACKH,
|
|||
|
FRV_BUILTIN_MDPACKH,
|
|||
|
FRV_BUILTIN_MBTOH,
|
|||
|
FRV_BUILTIN_MHTOB,
|
|||
|
FRV_BUILTIN_MCOP1,
|
|||
|
FRV_BUILTIN_MCOP2,
|
|||
|
FRV_BUILTIN_MROTLI,
|
|||
|
FRV_BUILTIN_MROTRI,
|
|||
|
FRV_BUILTIN_MWCUT,
|
|||
|
FRV_BUILTIN_MSLLHI,
|
|||
|
FRV_BUILTIN_MSRLHI,
|
|||
|
FRV_BUILTIN_MSRAHI,
|
|||
|
FRV_BUILTIN_MEXPDHW,
|
|||
|
FRV_BUILTIN_MEXPDHD,
|
|||
|
FRV_BUILTIN_MMULHS,
|
|||
|
FRV_BUILTIN_MMULHU,
|
|||
|
FRV_BUILTIN_MMULXHS,
|
|||
|
FRV_BUILTIN_MMULXHU,
|
|||
|
FRV_BUILTIN_MMACHS,
|
|||
|
FRV_BUILTIN_MMACHU,
|
|||
|
FRV_BUILTIN_MMRDHS,
|
|||
|
FRV_BUILTIN_MMRDHU,
|
|||
|
FRV_BUILTIN_MQMULHS,
|
|||
|
FRV_BUILTIN_MQMULHU,
|
|||
|
FRV_BUILTIN_MQMULXHU,
|
|||
|
FRV_BUILTIN_MQMULXHS,
|
|||
|
FRV_BUILTIN_MQMACHS,
|
|||
|
FRV_BUILTIN_MQMACHU,
|
|||
|
FRV_BUILTIN_MCPXRS,
|
|||
|
FRV_BUILTIN_MCPXRU,
|
|||
|
FRV_BUILTIN_MCPXIS,
|
|||
|
FRV_BUILTIN_MCPXIU,
|
|||
|
FRV_BUILTIN_MQCPXRS,
|
|||
|
FRV_BUILTIN_MQCPXRU,
|
|||
|
FRV_BUILTIN_MQCPXIS,
|
|||
|
FRV_BUILTIN_MQCPXIU,
|
|||
|
FRV_BUILTIN_MCUT,
|
|||
|
FRV_BUILTIN_MCUTSS,
|
|||
|
FRV_BUILTIN_MWTACC,
|
|||
|
FRV_BUILTIN_MWTACCG,
|
|||
|
FRV_BUILTIN_MRDACC,
|
|||
|
FRV_BUILTIN_MRDACCG,
|
|||
|
FRV_BUILTIN_MTRAP,
|
|||
|
FRV_BUILTIN_MCLRACC,
|
|||
|
FRV_BUILTIN_MCLRACCA,
|
|||
|
FRV_BUILTIN_MDUNPACKH,
|
|||
|
FRV_BUILTIN_MBTOHE,
|
|||
|
FRV_BUILTIN_MQXMACHS,
|
|||
|
FRV_BUILTIN_MQXMACXHS,
|
|||
|
FRV_BUILTIN_MQMACXHS,
|
|||
|
FRV_BUILTIN_MADDACCS,
|
|||
|
FRV_BUILTIN_MSUBACCS,
|
|||
|
FRV_BUILTIN_MASACCS,
|
|||
|
FRV_BUILTIN_MDADDACCS,
|
|||
|
FRV_BUILTIN_MDSUBACCS,
|
|||
|
FRV_BUILTIN_MDASACCS,
|
|||
|
FRV_BUILTIN_MABSHS,
|
|||
|
FRV_BUILTIN_MDROTLI,
|
|||
|
FRV_BUILTIN_MCPLHI,
|
|||
|
FRV_BUILTIN_MCPLI,
|
|||
|
FRV_BUILTIN_MDCUTSSI,
|
|||
|
FRV_BUILTIN_MQSATHS,
|
|||
|
FRV_BUILTIN_MQLCLRHS,
|
|||
|
FRV_BUILTIN_MQLMTHS,
|
|||
|
FRV_BUILTIN_MQSLLHI,
|
|||
|
FRV_BUILTIN_MQSRAHI,
|
|||
|
FRV_BUILTIN_MHSETLOS,
|
|||
|
FRV_BUILTIN_MHSETLOH,
|
|||
|
FRV_BUILTIN_MHSETHIS,
|
|||
|
FRV_BUILTIN_MHSETHIH,
|
|||
|
FRV_BUILTIN_MHDSETS,
|
|||
|
FRV_BUILTIN_MHDSETH,
|
|||
|
FRV_BUILTIN_SMUL,
|
|||
|
FRV_BUILTIN_UMUL,
|
|||
|
FRV_BUILTIN_PREFETCH0,
|
|||
|
FRV_BUILTIN_PREFETCH,
|
|||
|
FRV_BUILTIN_SMASS,
|
|||
|
FRV_BUILTIN_SMSSS,
|
|||
|
FRV_BUILTIN_SMU,
|
|||
|
FRV_BUILTIN_SCUTSS,
|
|||
|
FRV_BUILTIN_ADDSS,
|
|||
|
FRV_BUILTIN_SUBSS,
|
|||
|
FRV_BUILTIN_SLASS,
|
|||
|
FRV_BUILTIN_IACCreadll,
|
|||
|
FRV_BUILTIN_IACCreadl,
|
|||
|
FRV_BUILTIN_IACCsetll,
|
|||
|
FRV_BUILTIN_IACCsetl,
|
|||
|
FRV_BUILTIN_SCAN,
|
|||
|
FRV_BUILTIN_READ8,
|
|||
|
FRV_BUILTIN_READ16,
|
|||
|
FRV_BUILTIN_READ32,
|
|||
|
FRV_BUILTIN_READ64,
|
|||
|
FRV_BUILTIN_WRITE8,
|
|||
|
FRV_BUILTIN_WRITE16,
|
|||
|
FRV_BUILTIN_WRITE32,
|
|||
|
FRV_BUILTIN_WRITE64
|
|||
|
};
|
|||
|
#define FRV_BUILTIN_FIRST_NONMEDIA FRV_BUILTIN_SMUL
|
|||
|
|
|||
|
/* Enable prototypes on the call rtl functions. */
|
|||
|
#define MD_CALL_PROTOTYPES 1
|
|||
|
|
|||
|
#define CPU_UNITS_QUERY 1
|
|||
|
|
|||
|
#ifdef __FRV_FDPIC__
|
|||
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#define CRT_GET_RFIB_DATA(dbase) \
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({ extern void *_GLOBAL_OFFSET_TABLE_; (dbase) = &_GLOBAL_OFFSET_TABLE_; })
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#endif
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#endif /* __FRV_H__ */
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