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/* Subroutines used for macro/preprocessor support on the ia-32.
Copyright (C) 2008
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "rtl.h"
#include "tree.h"
#include "tm_p.h"
#include "flags.h"
#include "c-common.h"
#include "ggc.h"
#include "target.h"
#include "target-def.h"
#include "cpplib.h"
#include "c-pragma.h"
static bool ix86_pragma_target_parse (tree, tree);
static void ix86_target_macros_internal
(int, enum processor_type, enum processor_type, enum fpmath_unit,
void (*def_or_undef) (cpp_reader *, const char *));
/* Internal function to either define or undef the appropriate system
macros. */
static void
ix86_target_macros_internal (int isa_flag,
enum processor_type arch,
enum processor_type tune,
enum fpmath_unit fpmath,
void (*def_or_undef) (cpp_reader *,
const char *))
{
/* For some of the k6/pentium varients there weren't seperate ISA bits to
identify which tune/arch flag was passed, so figure it out here. */
size_t arch_len = strlen (ix86_arch_string);
size_t tune_len = strlen (ix86_tune_string);
int last_arch_char = ix86_arch_string[arch_len - 1];
int last_tune_char = ix86_tune_string[tune_len - 1];
/* Built-ins based on -march=. */
switch (arch)
{
case PROCESSOR_I386:
break;
case PROCESSOR_I486:
def_or_undef (parse_in, "__i486");
def_or_undef (parse_in, "__i486__");
break;
case PROCESSOR_PENTIUM:
def_or_undef (parse_in, "__i586");
def_or_undef (parse_in, "__i586__");
def_or_undef (parse_in, "__pentium");
def_or_undef (parse_in, "__pentium__");
if (isa_flag & OPTION_MASK_ISA_MMX)
def_or_undef (parse_in, "__pentium_mmx__");
break;
case PROCESSOR_PENTIUMPRO:
def_or_undef (parse_in, "__i686");
def_or_undef (parse_in, "__i686__");
def_or_undef (parse_in, "__pentiumpro");
def_or_undef (parse_in, "__pentiumpro__");
break;
case PROCESSOR_GEODE:
def_or_undef (parse_in, "__geode");
def_or_undef (parse_in, "__geode__");
break;
case PROCESSOR_K6:
def_or_undef (parse_in, "__k6");
def_or_undef (parse_in, "__k6__");
if (last_arch_char == '2')
def_or_undef (parse_in, "__k6_2__");
else if (last_arch_char == '3')
def_or_undef (parse_in, "__k6_3__");
else if (isa_flag & OPTION_MASK_ISA_3DNOW)
def_or_undef (parse_in, "__k6_3__");
break;
case PROCESSOR_ATHLON:
def_or_undef (parse_in, "__athlon");
def_or_undef (parse_in, "__athlon__");
if (isa_flag & OPTION_MASK_ISA_SSE)
def_or_undef (parse_in, "__athlon_sse__");
break;
case PROCESSOR_K8:
def_or_undef (parse_in, "__k8");
def_or_undef (parse_in, "__k8__");
break;
case PROCESSOR_AMDFAM10:
def_or_undef (parse_in, "__amdfam10");
def_or_undef (parse_in, "__amdfam10__");
break;
case PROCESSOR_PENTIUM4:
def_or_undef (parse_in, "__pentium4");
def_or_undef (parse_in, "__pentium4__");
break;
case PROCESSOR_NOCONA:
def_or_undef (parse_in, "__nocona");
def_or_undef (parse_in, "__nocona__");
break;
case PROCESSOR_CORE2:
def_or_undef (parse_in, "__core2");
def_or_undef (parse_in, "__core2__");
break;
/* use PROCESSOR_max to not set/unset the arch macro. */
case PROCESSOR_max:
break;
case PROCESSOR_GENERIC32:
case PROCESSOR_GENERIC64:
gcc_unreachable ();
}
/* Built-ins based on -mtune=. */
switch (tune)
{
case PROCESSOR_I386:
def_or_undef (parse_in, "__tune_i386__");
break;
case PROCESSOR_I486:
def_or_undef (parse_in, "__tune_i486__");
break;
case PROCESSOR_PENTIUM:
def_or_undef (parse_in, "__tune_i586__");
def_or_undef (parse_in, "__tune_pentium__");
if (last_tune_char == 'x')
def_or_undef (parse_in, "__tune_pentium_mmx__");
break;
case PROCESSOR_PENTIUMPRO:
def_or_undef (parse_in, "__tune_i686__");
def_or_undef (parse_in, "__tune_pentiumpro__");
switch (last_tune_char)
{
case '3':
def_or_undef (parse_in, "__tune_pentium3__");
/* FALLTHRU */
case '2':
def_or_undef (parse_in, "__tune_pentium2__");
break;
}
break;
case PROCESSOR_GEODE:
def_or_undef (parse_in, "__tune_geode__");
break;
case PROCESSOR_K6:
def_or_undef (parse_in, "__tune_k6__");
if (last_tune_char == '2')
def_or_undef (parse_in, "__tune_k6_2__");
else if (last_tune_char == '3')
def_or_undef (parse_in, "__tune_k6_3__");
else if (isa_flag & OPTION_MASK_ISA_3DNOW)
def_or_undef (parse_in, "__tune_k6_3__");
break;
case PROCESSOR_ATHLON:
def_or_undef (parse_in, "__tune_athlon__");
if (isa_flag & OPTION_MASK_ISA_SSE)
def_or_undef (parse_in, "__tune_athlon_sse__");
break;
case PROCESSOR_K8:
def_or_undef (parse_in, "__tune_k8__");
break;
case PROCESSOR_AMDFAM10:
def_or_undef (parse_in, "__tune_amdfam10__");
break;
case PROCESSOR_PENTIUM4:
def_or_undef (parse_in, "__tune_pentium4__");
break;
case PROCESSOR_NOCONA:
def_or_undef (parse_in, "__tune_nocona__");
break;
case PROCESSOR_CORE2:
def_or_undef (parse_in, "__tune_core2__");
break;
case PROCESSOR_GENERIC32:
case PROCESSOR_GENERIC64:
break;
/* use PROCESSOR_max to not set/unset the tune macro. */
case PROCESSOR_max:
break;
}
if (isa_flag & OPTION_MASK_ISA_MMX)
def_or_undef (parse_in, "__MMX__");
if (isa_flag & OPTION_MASK_ISA_3DNOW)
def_or_undef (parse_in, "__3dNOW__");
if (isa_flag & OPTION_MASK_ISA_3DNOW_A)
def_or_undef (parse_in, "__3dNOW_A__");
if (isa_flag & OPTION_MASK_ISA_SSE)
def_or_undef (parse_in, "__SSE__");
if (isa_flag & OPTION_MASK_ISA_SSE2)
def_or_undef (parse_in, "__SSE2__");
if (isa_flag & OPTION_MASK_ISA_SSE3)
def_or_undef (parse_in, "__SSE3__");
if (isa_flag & OPTION_MASK_ISA_SSSE3)
def_or_undef (parse_in, "__SSSE3__");
if (isa_flag & OPTION_MASK_ISA_SSE4_1)
def_or_undef (parse_in, "__SSE4_1__");
if (isa_flag & OPTION_MASK_ISA_SSE4_2)
def_or_undef (parse_in, "__SSE4_2__");
if (isa_flag & OPTION_MASK_ISA_AES)
def_or_undef (parse_in, "__AES__");
if (isa_flag & OPTION_MASK_ISA_PCLMUL)
def_or_undef (parse_in, "__PCLMUL__");
if (isa_flag & OPTION_MASK_ISA_AVX)
def_or_undef (parse_in, "__AVX__");
if (isa_flag & OPTION_MASK_ISA_FMA)
def_or_undef (parse_in, "__FMA__");
if (isa_flag & OPTION_MASK_ISA_SSE4A)
def_or_undef (parse_in, "__SSE4A__");
if (isa_flag & OPTION_MASK_ISA_SSE5)
def_or_undef (parse_in, "__SSE5__");
if ((fpmath & FPMATH_SSE) && (isa_flag & OPTION_MASK_ISA_SSE))
def_or_undef (parse_in, "__SSE_MATH__");
if ((fpmath & FPMATH_SSE) && (isa_flag & OPTION_MASK_ISA_SSE2))
def_or_undef (parse_in, "__SSE2_MATH__");
}
/* Hook to validate the current #pragma GCC target and set the state, and
update the macros based on what was changed. If ARGS is NULL, then
POP_TARGET is used to reset the options. */
static bool
ix86_pragma_target_parse (tree args, tree pop_target)
{
tree prev_tree = build_target_option_node ();
tree cur_tree;
struct cl_target_option *prev_opt;
struct cl_target_option *cur_opt;
int prev_isa;
int cur_isa;
int diff_isa;
enum processor_type prev_arch;
enum processor_type prev_tune;
enum processor_type cur_arch;
enum processor_type cur_tune;
if (! args)
{
cur_tree = ((pop_target)
? pop_target
: target_option_default_node);
cl_target_option_restore (TREE_TARGET_OPTION (cur_tree));
}
else
{
cur_tree = ix86_valid_target_attribute_tree (args);
if (!cur_tree)
return false;
}
target_option_current_node = cur_tree;
/* Figure out the previous/current isa, arch, tune and the differences. */
prev_opt = TREE_TARGET_OPTION (prev_tree);
cur_opt = TREE_TARGET_OPTION (cur_tree);
prev_isa = prev_opt->ix86_isa_flags;
cur_isa = cur_opt->ix86_isa_flags;
diff_isa = (prev_isa ^ cur_isa);
prev_arch = prev_opt->arch;
prev_tune = prev_opt->tune;
cur_arch = cur_opt->arch;
cur_tune = cur_opt->tune;
/* If the same processor is used for both previous and current options, don't
change the macros. */
if (cur_arch == prev_arch)
cur_arch = prev_arch = PROCESSOR_max;
if (cur_tune == prev_tune)
cur_tune = prev_tune = PROCESSOR_max;
/* Undef all of the macros for that are no longer current. */
ix86_target_macros_internal (prev_isa & diff_isa,
prev_arch,
prev_tune,
prev_opt->fpmath,
cpp_undef);
/* Define all of the macros for new options that were just turned on. */
ix86_target_macros_internal (cur_isa & diff_isa,
cur_arch,
cur_tune,
cur_opt->fpmath,
cpp_define);
return true;
}
/* Function to tell the preprocessor about the defines for the current target. */
void
ix86_target_macros (void)
{
/* 32/64-bit won't change with target specific options, so do the assert and
builtin_define_std calls here. */
if (TARGET_64BIT)
{
cpp_assert (parse_in, "cpu=x86_64");
cpp_assert (parse_in, "machine=x86_64");
cpp_define (parse_in, "__amd64");
cpp_define (parse_in, "__amd64__");
cpp_define (parse_in, "__x86_64");
cpp_define (parse_in, "__x86_64__");
}
else
{
cpp_assert (parse_in, "cpu=i386");
cpp_assert (parse_in, "machine=i386");
builtin_define_std ("i386");
}
ix86_target_macros_internal (ix86_isa_flags,
ix86_arch,
ix86_tune,
ix86_fpmath,
cpp_define);
}
/* Register target pragmas. We need to add the hook for parsing #pragma GCC
option here rather than in i386.c since it will pull in various preprocessor
functions, and those are not present in languages like fortran without a
preprocessor. */
void
ix86_register_pragmas (void)
{
/* Update pragma hook to allow parsing #pragma GCC target. */
targetm.target_option.pragma_parse = ix86_pragma_target_parse;
#ifdef REGISTER_SUBTARGET_PRAGMAS
REGISTER_SUBTARGET_PRAGMAS ();
#endif
}
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