924 lines
31 KiB
C
924 lines
31 KiB
C
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/* Definitions of target machine for GNU compiler.
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Intel 386 (OSF/1 with OSF/rose) version.
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Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "halfpic.h"
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#include "i386/gstabs.h"
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/* Get perform_* macros to build libgcc.a. */
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#include "i386/perform.h"
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#define OSF_OS
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#undef WORD_SWITCH_TAKES_ARG
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#define WORD_SWITCH_TAKES_ARG(STR) \
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(DEFAULT_WORD_SWITCH_TAKES_ARG (STR) || !strcmp (STR, "pic-names"))
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/* This defines which switch letters take arguments. On svr4, most of
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the normal cases (defined in gcc.c) apply, and we also have -h* and
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-z* options (for the linker). */
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#define SWITCH_TAKES_ARG(CHAR) \
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( (CHAR) == 'D' \
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|| (CHAR) == 'U' \
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|| (CHAR) == 'o' \
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|| (CHAR) == 'e' \
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|| (CHAR) == 'T' \
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|| (CHAR) == 'u' \
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|| (CHAR) == 'I' \
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|| (CHAR) == 'm' \
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|| (CHAR) == 'L' \
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|| (CHAR) == 'A' \
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|| (CHAR) == 'h' \
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|| (CHAR) == 'z')
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#define MASK_HALF_PIC 010000000000 /* Mask for half-pic code */
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#define MASK_HALF_PIC_DEBUG 004000000000 /* Debug flag */
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#define MASK_ELF 002000000000 /* ELF not rose */
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#define MASK_NO_IDENT 001000000000 /* suppress .ident */
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#define MASK_NO_UNDERSCORES 000400000000 /* suppress leading _ */
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#define MASK_LARGE_ALIGN 000200000000 /* align to >word boundaries */
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#define MASK_NO_MCOUNT 000100000000 /* profiling uses mcount_ptr */
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#define TARGET_HALF_PIC (target_flags & MASK_HALF_PIC)
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#define TARGET_DEBUG (target_flags & MASK_HALF_PIC_DEBUG)
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#define HALF_PIC_DEBUG TARGET_DEBUG
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#define TARGET_ELF (target_flags & MASK_ELF)
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#define TARGET_ROSE ((target_flags & MASK_ELF) == 0)
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#define TARGET_IDENT ((target_flags & MASK_NO_IDENT) == 0)
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#define TARGET_UNDERSCORES ((target_flags & MASK_NO_UNDERSCORES) == 0)
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#define TARGET_LARGE_ALIGN (target_flags & MASK_LARGE_ALIGN)
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#define TARGET_MCOUNT ((target_flags & MASK_NO_MCOUNT) == 0)
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{ "half-pic", MASK_HALF_PIC}, \
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{ "no-half-pic", -MASK_HALF_PIC}, \
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{ "debug-half-pic", MASK_HALF_PIC_DEBUG}, \
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{ "debugb", MASK_HALF_PIC_DEBUG}, \
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{ "elf", MASK_ELF}, \
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{ "rose", -MASK_ELF}, \
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{ "ident", -MASK_NO_IDENT}, \
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{ "no-ident", MASK_NO_IDENT}, \
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{ "underscores", -MASK_NO_UNDERSCORES}, \
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{ "no-underscores", MASK_NO_UNDERSCORES}, \
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{ "large-align", MASK_LARGE_ALIGN}, \
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{ "no-large-align", -MASK_LARGE_ALIGN}, \
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{ "mcount", -MASK_NO_MCOUNT}, \
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{ "mcount-ptr", MASK_NO_MCOUNT}, \
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{ "no-mcount", MASK_NO_MCOUNT},
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/* OSF/rose uses stabs, not dwarf. */
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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#ifndef DWARF_DEBUGGING_INFO
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#define DWARF_DEBUGGING_INFO /* enable dwarf debugging for testing */
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#endif
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/* Handle #pragma weak and #pragma pack. */
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#define HANDLE_SYSV_PRAGMA
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#define SUPPORTS_WEAK TARGET_ELF
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/* Change default predefines. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-DOSF -DOSF1 -Dunix -Di386 -Asystem(unix) -Asystem(xpg4) -Acpu(i386) -Amachine(i386)"
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#undef CPP_SPEC
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#define CPP_SPEC "\
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%{!melf: -D__ROSE__ %{!pic-none: -D__SHARED__}} \
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%{melf: -D__ELF__ %{fpic: -D__SHARED__}} \
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%{mno-underscores: -D__NO_UNDERSCORES__} \
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%{melf: %{!munderscores: -D__NO_UNDERSCORES__}} \
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%{.S: %{!ansi:%{!traditional:%{!traditional-cpp:%{!ftraditional: -traditional}}}}} \
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%{.S: -D__LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
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%{.cc: -D__LANGUAGE_C_PLUS_PLUS} \
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%{.cxx: -D__LANGUAGE_C_PLUS_PLUS} \
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%{.C: -D__LANGUAGE_C_PLUS_PLUS} \
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%{.m: -D__LANGUAGE_OBJECTIVE_C} \
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%{!.S: -D__LANGUAGE_C %{!ansi:-DLANGUAGE_C}}"
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/* Turn on -pic-extern by default for OSF/rose, -fpic for ELF. */
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#undef CC1_SPEC
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#define CC1_SPEC "\
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%{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \
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%{!melf: %{!mrose: -mrose }} \
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%{melf: %{!munderscores: %{!mno-underscores: -mno-underscores }} \
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%{!mmcount: %{!mno-mcount: %{!mmcount-ptr: -mmcount-ptr }}}} \
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%{!melf: %{!munderscores: %{!mno-underscores: -munderscores }} \
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%{!mmcount: %{!mno-mcount: %{!mmcount-ptr: -mmcount }}} \
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%{pic-extern: -mhalf-pic } %{pic-lib: -mhalf-pic } \
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%{!pic-extern: %{!pic-lib: %{pic-none: -mno-half-pic} %{!pic-none: -mhalf-pic}}} \
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%{pic-calls: } %{pic-names*: }}"
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#undef ASM_SPEC
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#define ASM_SPEC "%{v*: -v}"
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#undef LINK_SPEC
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#define LINK_SPEC "%{v*: -v} \
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%{!melf: %{!noshrlib: %{pic-none: -noshrlib} %{!pic-none: -warn_nopic}} \
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%{nostdlib} %{noshrlib} %{glue}} \
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%{melf: %{dy} %{dn} %{glue: } \
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%{h*} %{z*} \
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%{static:-dn -Bstatic} \
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%{shared:-G -dy} \
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%{symbolic:-Bsymbolic -G -dy} \
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%{G:-G} \
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%{!dy: %{!dn: %{!static: %{!shared: %{!symbolic: \
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%{noshrlib: -dn } %{pic-none: -dn } \
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%{!noshrlib: %{!pic-none: -dy}}}}}}}}"
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#undef LIB_SPEC
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#define LIB_SPEC "-lc"
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#undef LIBG_SPEC
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#define LIBG_SPEC ""
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
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#undef TARGET_VERSION_INTERNAL
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#undef TARGET_VERSION
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#define I386_VERSION " 80386, OSF/rose objects"
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#define TARGET_VERSION_INTERNAL(STREAM) fputs (I386_VERSION, STREAM)
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#define TARGET_VERSION TARGET_VERSION_INTERNAL (stderr)
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#undef MD_EXEC_PREFIX
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#define MD_EXEC_PREFIX "/usr/ccs/gcc/"
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#undef MD_STARTFILE_PREFIX
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#define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
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/* Specify size_t, ptrdiff_t, and wchar_t types. */
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#undef SIZE_TYPE
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#undef PTRDIFF_TYPE
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#undef WCHAR_TYPE
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#undef WCHAR_TYPE_SIZE
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#define SIZE_TYPE "long unsigned int"
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#define PTRDIFF_TYPE "int"
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#define WCHAR_TYPE "unsigned int"
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#define WCHAR_TYPE_SIZE BITS_PER_WORD
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/* Define this macro if the system header files support C++ as well
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as C. This macro inhibits the usual method of using system header
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files in C++, which is to pretend that the file's contents are
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enclosed in `extern "C" {...}'. */
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#define NO_IMPLICIT_EXTERN_C
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/* Turn off long double being 96 bits. */
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#undef LONG_DOUBLE_TYPE_SIZE
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#define LONG_DOUBLE_TYPE_SIZE 64
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/* This macro generates the assembly code for function entry.
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FILE is a stdio stream to output the code to.
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SIZE is an int: how many units of temporary storage to allocate.
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Refer to the array `regs_ever_live' to determine which registers
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to save; `regs_ever_live[I]' is nonzero if register number I
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is ever used in the function. This macro is responsible for
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knowing which registers should not be saved even if used.
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We override it here to allow for the new profiling code to go before
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the prologue and the old mcount code to go after the prologue (and
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after %ebx has been set up for ELF shared library support). */
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#define OSF_PROFILE_BEFORE_PROLOGUE \
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(!TARGET_MCOUNT \
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&& !current_function_needs_context \
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&& (!flag_pic \
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|| !frame_pointer_needed \
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|| (!current_function_uses_pic_offset_table \
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&& !current_function_uses_const_pool)))
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#undef FUNCTION_PROLOGUE
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#define FUNCTION_PROLOGUE(FILE, SIZE) \
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do \
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{ \
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char *prefix = (TARGET_UNDERSCORES) ? "_" : ""; \
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char *lprefix = LPREFIX; \
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int labelno = profile_label_no; \
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\
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if (profile_flag && OSF_PROFILE_BEFORE_PROLOGUE) \
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{ \
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if (!flag_pic && !HALF_PIC_P ()) \
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{ \
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fprintf (FILE, "\tmovl $%sP%d,%%edx\n", lprefix, labelno); \
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fprintf (FILE, "\tcall *%s_mcount_ptr\n", prefix); \
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} \
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\
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else if (HALF_PIC_P ()) \
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{ \
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rtx symref; \
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\
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HALF_PIC_EXTERNAL ("_mcount_ptr"); \
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symref = HALF_PIC_PTR (gen_rtx (SYMBOL_REF, Pmode, \
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"_mcount_ptr")); \
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\
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fprintf (FILE, "\tmovl $%sP%d,%%edx\n", lprefix, labelno); \
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fprintf (FILE, "\tmovl %s%s,%%eax\n", prefix, \
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XSTR (symref, 0)); \
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fprintf (FILE, "\tcall *(%%eax)\n"); \
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} \
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\
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else \
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{ \
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static int call_no = 0; \
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\
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fprintf (FILE, "\tcall %sPc%d\n", lprefix, call_no); \
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fprintf (FILE, "%sPc%d:\tpopl %%eax\n", lprefix, call_no); \
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fprintf (FILE, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-%sPc%d],%%eax\n", \
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lprefix, call_no++); \
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fprintf (FILE, "\tleal %sP%d@GOTOFF(%%eax),%%edx\n", \
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lprefix, labelno); \
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fprintf (FILE, "\tmovl %s_mcount_ptr@GOT(%%eax),%%eax\n", \
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prefix); \
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fprintf (FILE, "\tcall *(%%eax)\n"); \
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} \
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} \
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\
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function_prologue (FILE, SIZE); \
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} \
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while (0)
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/* A C statement or compound statement to output to FILE some assembler code to
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call the profiling subroutine `mcount'. Before calling, the assembler code
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must load the address of a counter variable into a register where `mcount'
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expects to find the address. The name of this variable is `LP' followed by
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the number LABELNO, so you would generate the name using `LP%d' in a
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`fprintf'.
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The details of how the address should be passed to `mcount' are determined
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by your operating system environment, not by GNU CC. To figure them out,
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compile a small program for profiling using the system's installed C
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compiler and look at the assembler code that results. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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do \
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{ \
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if (!OSF_PROFILE_BEFORE_PROLOGUE) \
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{ \
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char *prefix = (TARGET_UNDERSCORES) ? "_" : ""; \
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char *lprefix = LPREFIX; \
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int labelno = LABELNO; \
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\
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/* Note that OSF/rose blew it in terms of calling mcount, \
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since OSF/rose prepends a leading underscore, but mcount's \
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doesn't. At present, we keep this kludge for ELF as well \
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to allow old kernels to build profiling. */ \
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\
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if (flag_pic \
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&& !current_function_uses_pic_offset_table \
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&& !current_function_uses_const_pool) \
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abort (); \
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\
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if (TARGET_MCOUNT && flag_pic) \
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{ \
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fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n", \
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lprefix, labelno); \
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fprintf (FILE, "\tcall *%smcount@GOT(%%ebx)\n", prefix); \
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} \
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\
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else if (TARGET_MCOUNT && HALF_PIC_P ()) \
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{ \
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rtx symdef; \
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\
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HALF_PIC_EXTERNAL ("mcount"); \
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symdef = HALF_PIC_PTR (gen_rtx (SYMBOL_REF, Pmode, "mcount")); \
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fprintf (FILE, "\tmovl $%sP%d,%%edx\n", lprefix, labelno); \
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fprintf (FILE, "\tcall *%s%s\n", prefix, XSTR (symdef, 0)); \
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} \
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\
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else if (TARGET_MCOUNT) \
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{ \
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fprintf (FILE, "\tmovl $%sP%d,%%edx\n", lprefix, labelno); \
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fprintf (FILE, "\tcall %smcount\n", prefix); \
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} \
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\
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else if (flag_pic && frame_pointer_needed) \
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{ \
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fprintf (FILE, "\tmovl 4(%%ebp),%%ecx\n"); \
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fprintf (FILE, "\tpushl %%ecx\n"); \
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|
|
fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n", \
|
||
|
|
lprefix, labelno); \
|
||
|
|
fprintf (FILE, "\tmovl _mcount_ptr@GOT(%%ebx),%%eax\n"); \
|
||
|
|
fprintf (FILE, "\tcall *(%%eax)\n"); \
|
||
|
|
fprintf (FILE, "\tpopl %%eax\n"); \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
else if (frame_pointer_needed) \
|
||
|
|
{ \
|
||
|
|
fprintf (FILE, "\tmovl 4(%%ebp),%%ecx\n"); \
|
||
|
|
fprintf (FILE, "\tpushl %%ecx\n"); \
|
||
|
|
fprintf (FILE, "\tmovl $%sP%d,%%edx\n", lprefix, labelno); \
|
||
|
|
fprintf (FILE, "\tcall *_mcount_ptr\n"); \
|
||
|
|
fprintf (FILE, "\tpopl %%eax\n"); \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
else \
|
||
|
|
abort (); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
/* A C function or functions which are needed in the library to
|
||
|
|
support block profiling. When support goes into libc, undo
|
||
|
|
the #if 0. */
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
#undef BLOCK_PROFILING_CODE
|
||
|
|
#define BLOCK_PROFILING_CODE
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Prefix for internally generated assembler labels. If we aren't using
|
||
|
|
underscores, we are using prefix `.'s to identify labels that should
|
||
|
|
be ignored, as in `i386/gas.h' --karl@cs.umb.edu */
|
||
|
|
#undef LPREFIX
|
||
|
|
#define LPREFIX ((TARGET_UNDERSCORES) ? "L" : ".L")
|
||
|
|
|
||
|
|
/* This is how to store into the string BUF
|
||
|
|
the symbol_ref name of an internal numbered label where
|
||
|
|
PREFIX is the class of label and NUM is the number within the class.
|
||
|
|
This is suitable for output with `assemble_name'. */
|
||
|
|
|
||
|
|
#undef ASM_GENERATE_INTERNAL_LABEL
|
||
|
|
#define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
|
||
|
|
sprintf ((BUF), "*%s%s%d", (TARGET_UNDERSCORES) ? "" : ".", \
|
||
|
|
(PREFIX), (NUMBER))
|
||
|
|
|
||
|
|
/* This is how to output an internal numbered label where
|
||
|
|
PREFIX is the class of label and NUM is the number within the class. */
|
||
|
|
|
||
|
|
#undef ASM_OUTPUT_INTERNAL_LABEL
|
||
|
|
#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
|
||
|
|
fprintf (FILE, "%s%s%d:\n", (TARGET_UNDERSCORES) ? "" : ".", \
|
||
|
|
PREFIX, NUM)
|
||
|
|
|
||
|
|
/* This is how to output a reference to a user-level label named NAME. */
|
||
|
|
|
||
|
|
#undef ASM_OUTPUT_LABELREF
|
||
|
|
#define ASM_OUTPUT_LABELREF(FILE,NAME) \
|
||
|
|
fprintf (FILE, "%s%s", (TARGET_UNDERSCORES) ? "_" : "", NAME)
|
||
|
|
|
||
|
|
/* This is how to output an element of a case-vector that is relative.
|
||
|
|
This is only used for PIC code. See comments by the `casesi' insn in
|
||
|
|
i386.md for an explanation of the expression this outputs. */
|
||
|
|
|
||
|
|
#undef ASM_OUTPUT_ADDR_DIFF_ELT
|
||
|
|
#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
|
||
|
|
fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
|
||
|
|
|
||
|
|
/* Output a definition */
|
||
|
|
#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
|
||
|
|
do \
|
||
|
|
{ \
|
||
|
|
fprintf ((FILE), "\t%s\t", SET_ASM_OP); \
|
||
|
|
assemble_name (FILE, LABEL1); \
|
||
|
|
fprintf (FILE, ","); \
|
||
|
|
assemble_name (FILE, LABEL2); \
|
||
|
|
fprintf (FILE, "\n"); \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
/* A C expression to output text to align the location counter in the
|
||
|
|
way that is desirable at a point in the code that is reached only
|
||
|
|
by jumping.
|
||
|
|
|
||
|
|
This macro need not be defined if you don't want any special
|
||
|
|
alignment to be done at such a time. Most machine descriptions do
|
||
|
|
not currently define the macro. */
|
||
|
|
|
||
|
|
#undef ASM_OUTPUT_ALIGN_CODE
|
||
|
|
#define ASM_OUTPUT_ALIGN_CODE(STREAM) \
|
||
|
|
fprintf (STREAM, "\t.align\t%d\n", \
|
||
|
|
(!TARGET_LARGE_ALIGN && i386_align_jumps > 2) ? 2 : i386_align_jumps)
|
||
|
|
|
||
|
|
/* A C expression to output text to align the location counter in the
|
||
|
|
way that is desirable at the beginning of a loop.
|
||
|
|
|
||
|
|
This macro need not be defined if you don't want any special
|
||
|
|
alignment to be done at such a time. Most machine descriptions do
|
||
|
|
not currently define the macro. */
|
||
|
|
|
||
|
|
#undef ASM_OUTPUT_LOOP_ALIGN
|
||
|
|
#define ASM_OUTPUT_LOOP_ALIGN(STREAM) \
|
||
|
|
fprintf (STREAM, "\t.align\t%d\n", i386_align_loops)
|
||
|
|
|
||
|
|
/* 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'. */
|
||
|
|
|
||
|
|
#undef ASM_OUTPUT_ALIGN
|
||
|
|
#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
|
||
|
|
fprintf (STREAM, "\t.align\t%d\n", \
|
||
|
|
(!TARGET_LARGE_ALIGN && (POWER) > 2) ? 2 : (POWER))
|
||
|
|
|
||
|
|
/* A C expression that is 1 if the RTX X is a constant which is a
|
||
|
|
valid address. On most machines, this can be defined as
|
||
|
|
`CONSTANT_P (X)', but a few machines are more restrictive in
|
||
|
|
which constant addresses are supported.
|
||
|
|
|
||
|
|
`CONSTANT_P' accepts integer-values expressions whose values are
|
||
|
|
not explicitly known, such as `symbol_ref', `label_ref', and
|
||
|
|
`high' expressions and `const' arithmetic expressions, in
|
||
|
|
addition to `const_int' and `const_double' expressions. */
|
||
|
|
|
||
|
|
#define CONSTANT_ADDRESS_P_ORIG(X) \
|
||
|
|
(GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
|
||
|
|
|| GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST \
|
||
|
|
|| GET_CODE (X) == HIGH)
|
||
|
|
|
||
|
|
#undef CONSTANT_ADDRESS_P
|
||
|
|
#define CONSTANT_ADDRESS_P(X) \
|
||
|
|
((CONSTANT_ADDRESS_P_ORIG (X)) && (!HALF_PIC_P () || !HALF_PIC_ADDRESS_P (X)))
|
||
|
|
|
||
|
|
/* Nonzero if the constant value X is a legitimate general operand.
|
||
|
|
It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
|
||
|
|
|
||
|
|
#undef LEGITIMATE_CONSTANT_P
|
||
|
|
#define LEGITIMATE_CONSTANT_P(X) \
|
||
|
|
(!HALF_PIC_P () \
|
||
|
|
|| GET_CODE (X) == CONST_DOUBLE \
|
||
|
|
|| GET_CODE (X) == CONST_INT \
|
||
|
|
|| !HALF_PIC_ADDRESS_P (X))
|
||
|
|
|
||
|
|
/* 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. */
|
||
|
|
|
||
|
|
#undef SUBTARGET_OVERRIDE_OPTIONS
|
||
|
|
#define SUBTARGET_OVERRIDE_OPTIONS \
|
||
|
|
{ \
|
||
|
|
/* \
|
||
|
|
if (TARGET_ELF && TARGET_HALF_PIC) \
|
||
|
|
{ \
|
||
|
|
target_flags &= ~MASK_HALF_PIC; \
|
||
|
|
flag_pic = 1; \
|
||
|
|
} \
|
||
|
|
*/ \
|
||
|
|
\
|
||
|
|
if (TARGET_ROSE && flag_pic) \
|
||
|
|
{ \
|
||
|
|
target_flags |= MASK_HALF_PIC; \
|
||
|
|
flag_pic = 0; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
if (TARGET_HALF_PIC) \
|
||
|
|
half_pic_init (); \
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Define this macro if references to a symbol must be treated
|
||
|
|
differently depending on something about the variable or
|
||
|
|
function named by the symbol (such as what section it is in).
|
||
|
|
|
||
|
|
The macro definition, if any, is executed immediately after the
|
||
|
|
rtl for DECL has been created and stored in `DECL_RTL (DECL)'.
|
||
|
|
The value of the rtl will be a `mem' whose address is a
|
||
|
|
`symbol_ref'.
|
||
|
|
|
||
|
|
The usual thing for this macro to do is to a flag in the
|
||
|
|
`symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified
|
||
|
|
name string in the `symbol_ref' (if one bit is not enough
|
||
|
|
information).
|
||
|
|
|
||
|
|
The best way to modify the name string is by adding text to the
|
||
|
|
beginning, with suitable punctuation to prevent any ambiguity.
|
||
|
|
Allocate the new name in `saveable_obstack'. You will have to
|
||
|
|
modify `ASM_OUTPUT_LABELREF' to remove and decode the added text
|
||
|
|
and output the name accordingly.
|
||
|
|
|
||
|
|
You can also check the information stored in the `symbol_ref' in
|
||
|
|
the definition of `GO_IF_LEGITIMATE_ADDRESS' or
|
||
|
|
`PRINT_OPERAND_ADDRESS'. */
|
||
|
|
|
||
|
|
#undef ENCODE_SECTION_INFO
|
||
|
|
#define ENCODE_SECTION_INFO(DECL) \
|
||
|
|
do \
|
||
|
|
{ \
|
||
|
|
if (HALF_PIC_P ()) \
|
||
|
|
HALF_PIC_ENCODE (DECL); \
|
||
|
|
\
|
||
|
|
else if (flag_pic) \
|
||
|
|
{ \
|
||
|
|
rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
|
||
|
|
? TREE_CST_RTL (DECL) : DECL_RTL (DECL)); \
|
||
|
|
SYMBOL_REF_FLAG (XEXP (rtl, 0)) \
|
||
|
|
= (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
|
||
|
|
|| ! TREE_PUBLIC (DECL)); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
|
||
|
|
/* On most machines, read-only variables, constants, and jump tables
|
||
|
|
are placed in the text section. If this is not the case on your
|
||
|
|
machine, this macro should be defined to be the name of a function
|
||
|
|
(either `data_section' or a function defined in `EXTRA_SECTIONS')
|
||
|
|
that switches to the section to be used for read-only items.
|
||
|
|
|
||
|
|
If these items should be placed in the text section, this macro
|
||
|
|
should not be defined. */
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
#undef READONLY_DATA_SECTION
|
||
|
|
#define READONLY_DATA_SECTION() \
|
||
|
|
do \
|
||
|
|
{ \
|
||
|
|
if (TARGET_ELF) \
|
||
|
|
{ \
|
||
|
|
if (in_section != in_rodata) \
|
||
|
|
{ \
|
||
|
|
fprintf (asm_out_file, "\t.section \"rodata\"\n"); \
|
||
|
|
in_section = in_rodata; \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
else \
|
||
|
|
text_section (); \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* A list of names for sections other than the standard two, which are
|
||
|
|
`in_text' and `in_data'. You need not define this macro on a
|
||
|
|
system with no other sections (that GCC needs to use). */
|
||
|
|
|
||
|
|
#undef EXTRA_SECTIONS
|
||
|
|
#define EXTRA_SECTIONS in_rodata, in_data1
|
||
|
|
|
||
|
|
/* Given a decl node or constant node, choose the section to output it in
|
||
|
|
and select that section. */
|
||
|
|
|
||
|
|
#undef SELECT_RTX_SECTION
|
||
|
|
#define SELECT_RTX_SECTION(MODE, RTX) \
|
||
|
|
do \
|
||
|
|
{ \
|
||
|
|
if (MODE == Pmode && HALF_PIC_P () && HALF_PIC_ADDRESS_P (RTX)) \
|
||
|
|
data_section (); \
|
||
|
|
else \
|
||
|
|
readonly_data_section (); \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
#undef SELECT_SECTION
|
||
|
|
#define SELECT_SECTION(DECL, RELOC) \
|
||
|
|
{ \
|
||
|
|
if (RELOC && HALF_PIC_P ()) \
|
||
|
|
data_section (); \
|
||
|
|
\
|
||
|
|
else if (TREE_CODE (DECL) == STRING_CST) \
|
||
|
|
{ \
|
||
|
|
if (flag_writable_strings) \
|
||
|
|
data_section (); \
|
||
|
|
else \
|
||
|
|
readonly_data_section (); \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
else if (TREE_CODE (DECL) != VAR_DECL) \
|
||
|
|
readonly_data_section (); \
|
||
|
|
\
|
||
|
|
else if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
|
||
|
|
|| !DECL_INITIAL (DECL) \
|
||
|
|
|| (DECL_INITIAL (DECL) != error_mark_node \
|
||
|
|
&& !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
|
||
|
|
data_section (); \
|
||
|
|
\
|
||
|
|
else \
|
||
|
|
readonly_data_section (); \
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Define the strings used for the special svr4 .type and .size directives.
|
||
|
|
These strings generally do not vary from one system running svr4 to
|
||
|
|
another, but if a given system (e.g. m88k running svr) needs to use
|
||
|
|
different pseudo-op names for these, they may be overridden in the
|
||
|
|
file which includes this one. */
|
||
|
|
|
||
|
|
#define TYPE_ASM_OP ".type"
|
||
|
|
#define SIZE_ASM_OP ".size"
|
||
|
|
#define SET_ASM_OP ".set"
|
||
|
|
|
||
|
|
/* This is how we tell the assembler that a symbol is weak. */
|
||
|
|
|
||
|
|
#define ASM_WEAKEN_LABEL(FILE,NAME) \
|
||
|
|
do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
|
||
|
|
fputc ('\n', FILE); } while (0)
|
||
|
|
|
||
|
|
/* The following macro defines the format used to output the second
|
||
|
|
operand of the .type assembler directive. Different svr4 assemblers
|
||
|
|
expect various different forms for this operand. The one given here
|
||
|
|
is just a default. You may need to override it in your machine-
|
||
|
|
specific tm.h file (depending upon the particulars of your assembler). */
|
||
|
|
|
||
|
|
#define TYPE_OPERAND_FMT "@%s"
|
||
|
|
|
||
|
|
/* A C statement (sans semicolon) to output to the stdio stream
|
||
|
|
STREAM any text necessary for declaring the name NAME of an
|
||
|
|
initialized variable which is being defined. This macro must
|
||
|
|
output the label definition (perhaps using `ASM_OUTPUT_LABEL').
|
||
|
|
The argument DECL is the `VAR_DECL' tree node representing the
|
||
|
|
variable.
|
||
|
|
|
||
|
|
If this macro is not defined, then the variable name is defined
|
||
|
|
in the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */
|
||
|
|
|
||
|
|
#undef ASM_DECLARE_OBJECT_NAME
|
||
|
|
#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
|
||
|
|
do \
|
||
|
|
{ \
|
||
|
|
ASM_OUTPUT_LABEL(STREAM,NAME); \
|
||
|
|
HALF_PIC_DECLARE (NAME); \
|
||
|
|
if (TARGET_ELF) \
|
||
|
|
{ \
|
||
|
|
fprintf (STREAM, "\t%s\t ", TYPE_ASM_OP); \
|
||
|
|
assemble_name (STREAM, NAME); \
|
||
|
|
putc (',', STREAM); \
|
||
|
|
fprintf (STREAM, TYPE_OPERAND_FMT, "object"); \
|
||
|
|
putc ('\n', STREAM); \
|
||
|
|
size_directive_output = 0; \
|
||
|
|
if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
|
||
|
|
{ \
|
||
|
|
size_directive_output = 1; \
|
||
|
|
fprintf (STREAM, "\t%s\t ", SIZE_ASM_OP); \
|
||
|
|
assemble_name (STREAM, NAME); \
|
||
|
|
fprintf (STREAM, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
/* Output the size directive for a decl in rest_of_decl_compilation
|
||
|
|
in the case where we did not do so before the initializer.
|
||
|
|
Once we find the error_mark_node, we know that the value of
|
||
|
|
size_directive_output was set
|
||
|
|
by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
|
||
|
|
|
||
|
|
#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
|
||
|
|
do { \
|
||
|
|
char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
|
||
|
|
if (TARGET_ELF \
|
||
|
|
&& !flag_inhibit_size_directive && DECL_SIZE (DECL) \
|
||
|
|
&& ! AT_END && TOP_LEVEL \
|
||
|
|
&& DECL_INITIAL (DECL) == error_mark_node \
|
||
|
|
&& !size_directive_output) \
|
||
|
|
{ \
|
||
|
|
fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
|
||
|
|
assemble_name (FILE, name); \
|
||
|
|
fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
|
||
|
|
} \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
/* This is how to declare a function name. */
|
||
|
|
|
||
|
|
#undef ASM_DECLARE_FUNCTION_NAME
|
||
|
|
#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \
|
||
|
|
do \
|
||
|
|
{ \
|
||
|
|
ASM_OUTPUT_LABEL(STREAM,NAME); \
|
||
|
|
HALF_PIC_DECLARE (NAME); \
|
||
|
|
if (TARGET_ELF) \
|
||
|
|
{ \
|
||
|
|
fprintf (STREAM, "\t%s\t ", TYPE_ASM_OP); \
|
||
|
|
assemble_name (STREAM, NAME); \
|
||
|
|
putc (',', STREAM); \
|
||
|
|
fprintf (STREAM, TYPE_OPERAND_FMT, "function"); \
|
||
|
|
putc ('\n', STREAM); \
|
||
|
|
ASM_DECLARE_RESULT (STREAM, DECL_RESULT (DECL)); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
/* Write the extra assembler code needed to declare a function's result.
|
||
|
|
Most svr4 assemblers don't require any special declaration of the
|
||
|
|
result value, but there are exceptions. */
|
||
|
|
|
||
|
|
#ifndef ASM_DECLARE_RESULT
|
||
|
|
#define ASM_DECLARE_RESULT(FILE, RESULT)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* This is how to declare the size of a function. */
|
||
|
|
|
||
|
|
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
|
||
|
|
do \
|
||
|
|
{ \
|
||
|
|
if (TARGET_ELF && !flag_inhibit_size_directive) \
|
||
|
|
{ \
|
||
|
|
char label[256]; \
|
||
|
|
static int labelno; \
|
||
|
|
labelno++; \
|
||
|
|
ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \
|
||
|
|
ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \
|
||
|
|
fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
|
||
|
|
assemble_name (FILE, (FNAME)); \
|
||
|
|
fprintf (FILE, ","); \
|
||
|
|
assemble_name (FILE, label); \
|
||
|
|
fprintf (FILE, "-"); \
|
||
|
|
assemble_name (FILE, (FNAME)); \
|
||
|
|
putc ('\n', FILE); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
/* Attach a special .ident directive to the end of the file to identify
|
||
|
|
the version of GCC which compiled this code. The format of the
|
||
|
|
.ident string is patterned after the ones produced by native svr4
|
||
|
|
C compilers. */
|
||
|
|
|
||
|
|
#define IDENT_ASM_OP ".ident"
|
||
|
|
|
||
|
|
/* Allow #sccs in preprocessor. */
|
||
|
|
|
||
|
|
#define SCCS_DIRECTIVE
|
||
|
|
|
||
|
|
/* This says what to print at the end of the assembly file */
|
||
|
|
#define ASM_FILE_END(STREAM) \
|
||
|
|
do \
|
||
|
|
{ \
|
||
|
|
if (HALF_PIC_P ()) \
|
||
|
|
HALF_PIC_FINISH (STREAM); \
|
||
|
|
\
|
||
|
|
if (TARGET_IDENT) \
|
||
|
|
{ \
|
||
|
|
char *fstart = main_input_filename; \
|
||
|
|
char *fname; \
|
||
|
|
\
|
||
|
|
if (!fstart) \
|
||
|
|
fstart = "<no file>"; \
|
||
|
|
\
|
||
|
|
fname = fstart + strlen (fstart) - 1; \
|
||
|
|
while (fname > fstart && *fname != '/') \
|
||
|
|
fname--; \
|
||
|
|
\
|
||
|
|
if (*fname == '/') \
|
||
|
|
fname++; \
|
||
|
|
\
|
||
|
|
fprintf ((STREAM), "\t%s\t\"GCC: (GNU) %s %s -O%d", \
|
||
|
|
IDENT_ASM_OP, version_string, fname, optimize); \
|
||
|
|
\
|
||
|
|
if (write_symbols == PREFERRED_DEBUGGING_TYPE) \
|
||
|
|
fprintf ((STREAM), " -g%d", (int)debug_info_level); \
|
||
|
|
\
|
||
|
|
else if (write_symbols == DBX_DEBUG) \
|
||
|
|
fprintf ((STREAM), " -gstabs%d", (int)debug_info_level); \
|
||
|
|
\
|
||
|
|
else if (write_symbols == DWARF_DEBUG) \
|
||
|
|
fprintf ((STREAM), " -gdwarf%d", (int)debug_info_level); \
|
||
|
|
\
|
||
|
|
else if (write_symbols != NO_DEBUG) \
|
||
|
|
fprintf ((STREAM), " -g??%d", (int)debug_info_level); \
|
||
|
|
\
|
||
|
|
if (flag_omit_frame_pointer) \
|
||
|
|
fprintf ((STREAM), " -fomit-frame-pointer"); \
|
||
|
|
\
|
||
|
|
if (flag_strength_reduce) \
|
||
|
|
fprintf ((STREAM), " -fstrength-reduce"); \
|
||
|
|
\
|
||
|
|
if (flag_unroll_loops) \
|
||
|
|
fprintf ((STREAM), " -funroll-loops"); \
|
||
|
|
\
|
||
|
|
if (flag_schedule_insns) \
|
||
|
|
fprintf ((STREAM), " -fschedule-insns"); \
|
||
|
|
\
|
||
|
|
if (flag_schedule_insns_after_reload) \
|
||
|
|
fprintf ((STREAM), " -fschedule-insns2"); \
|
||
|
|
\
|
||
|
|
if (flag_force_mem) \
|
||
|
|
fprintf ((STREAM), " -fforce-mem"); \
|
||
|
|
\
|
||
|
|
if (flag_force_addr) \
|
||
|
|
fprintf ((STREAM), " -fforce-addr"); \
|
||
|
|
\
|
||
|
|
if (flag_inline_functions) \
|
||
|
|
fprintf ((STREAM), " -finline-functions"); \
|
||
|
|
\
|
||
|
|
if (flag_caller_saves) \
|
||
|
|
fprintf ((STREAM), " -fcaller-saves"); \
|
||
|
|
\
|
||
|
|
if (flag_pic) \
|
||
|
|
fprintf ((STREAM), (flag_pic > 1) ? " -fPIC" : " -fpic"); \
|
||
|
|
\
|
||
|
|
if (flag_inhibit_size_directive) \
|
||
|
|
fprintf ((STREAM), " -finhibit-size-directive"); \
|
||
|
|
\
|
||
|
|
if (flag_gnu_linker) \
|
||
|
|
fprintf ((STREAM), " -fgnu-linker"); \
|
||
|
|
\
|
||
|
|
if (profile_flag) \
|
||
|
|
fprintf ((STREAM), " -p"); \
|
||
|
|
\
|
||
|
|
if (profile_block_flag) \
|
||
|
|
fprintf ((STREAM), " -a"); \
|
||
|
|
\
|
||
|
|
if (TARGET_IEEE_FP) \
|
||
|
|
fprintf ((STREAM), " -mieee-fp"); \
|
||
|
|
\
|
||
|
|
if (TARGET_HALF_PIC) \
|
||
|
|
fprintf ((STREAM), " -mhalf-pic"); \
|
||
|
|
\
|
||
|
|
if (!TARGET_MOVE) \
|
||
|
|
fprintf ((STREAM), " -mno-move"); \
|
||
|
|
\
|
||
|
|
if (TARGET_386) \
|
||
|
|
fprintf ((STREAM), " -m386"); \
|
||
|
|
\
|
||
|
|
else if (TARGET_486) \
|
||
|
|
fprintf ((STREAM), " -m486"); \
|
||
|
|
\
|
||
|
|
else \
|
||
|
|
fprintf ((STREAM), " -munknown-machine"); \
|
||
|
|
\
|
||
|
|
fprintf ((STREAM), (TARGET_ELF) ? " -melf\"\n" : " -mrose\"\n"); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
while (0)
|
||
|
|
|
||
|
|
/* Tell collect that the object format is OSF/rose. */
|
||
|
|
#define OBJECT_FORMAT_ROSE
|
||
|
|
|
||
|
|
/* Tell collect where the appropriate binaries are. */
|
||
|
|
#define REAL_NM_FILE_NAME "/usr/ccs/gcc/bfd-nm"
|
||
|
|
#define REAL_STRIP_FILE_NAME "/usr/ccs/bin/strip"
|
||
|
|
|
||
|
|
/* Use atexit for static constructors/destructors, instead of defining
|
||
|
|
our own exit function. */
|
||
|
|
#define HAVE_ATEXIT
|
||
|
|
|
||
|
|
/* Define this macro meaning that gcc should find the library 'libgcc.a'
|
||
|
|
by hand, rather than passing the argument '-lgcc' to tell the linker
|
||
|
|
to do the search */
|
||
|
|
#define LINK_LIBGCC_SPECIAL
|
||
|
|
|
||
|
|
/* A C statement to output assembler commands which will identify the object
|
||
|
|
file as having been compile with GNU CC. We don't need or want this for
|
||
|
|
OSF1. GDB doesn't need it and kdb doesn't like it */
|
||
|
|
#define ASM_IDENTIFY_GCC(FILE)
|
||
|
|
|
||
|
|
/* Identify the front-end which produced this file. To keep symbol
|
||
|
|
space down, and not confuse kdb, only do this if the language is
|
||
|
|
not C. */
|
||
|
|
|
||
|
|
#define ASM_IDENTIFY_LANGUAGE(STREAM) \
|
||
|
|
{ \
|
||
|
|
if (strcmp (lang_identify (), "c") != 0) \
|
||
|
|
output_lang_identify (STREAM); \
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Generate calls to memcpy, etc., not bcopy, etc. */
|
||
|
|
#define TARGET_MEM_FUNCTIONS
|
||
|
|
|
||
|
|
/* Don't default to pcc-struct-return, because gcc is the only compiler, and
|
||
|
|
we want to retain compatibility with older gcc versions. */
|
||
|
|
#define DEFAULT_PCC_STRUCT_RETURN 0
|
||
|
|
|
||
|
|
/* Map i386 registers to the numbers dwarf expects. Of course this is different
|
||
|
|
from what stabs expects. */
|
||
|
|
|
||
|
|
#define DWARF_DBX_REGISTER_NUMBER(n) \
|
||
|
|
((n) == 0 ? 0 \
|
||
|
|
: (n) == 1 ? 2 \
|
||
|
|
: (n) == 2 ? 1 \
|
||
|
|
: (n) == 3 ? 3 \
|
||
|
|
: (n) == 4 ? 6 \
|
||
|
|
: (n) == 5 ? 7 \
|
||
|
|
: (n) == 6 ? 5 \
|
||
|
|
: (n) == 7 ? 4 \
|
||
|
|
: ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+3 \
|
||
|
|
: (-1))
|
||
|
|
|
||
|
|
/* Now what stabs expects in the register. */
|
||
|
|
#define STABS_DBX_REGISTER_NUMBER(n) \
|
||
|
|
((n) == 0 ? 0 : \
|
||
|
|
(n) == 1 ? 2 : \
|
||
|
|
(n) == 2 ? 1 : \
|
||
|
|
(n) == 3 ? 3 : \
|
||
|
|
(n) == 4 ? 6 : \
|
||
|
|
(n) == 5 ? 7 : \
|
||
|
|
(n) == 6 ? 4 : \
|
||
|
|
(n) == 7 ? 5 : \
|
||
|
|
(n) + 4)
|
||
|
|
|
||
|
|
#undef DBX_REGISTER_NUMBER
|
||
|
|
#define DBX_REGISTER_NUMBER(n) ((write_symbols == DWARF_DEBUG) \
|
||
|
|
? DWARF_DBX_REGISTER_NUMBER(n) \
|
||
|
|
: STABS_DBX_REGISTER_NUMBER(n))
|