OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

invoke.texi (i386 Options): Document x86-64 options.

Browse Source 
* doc/invoke.texi (i386 Options): Document x86-64 options.
	(i386 and x86-64 Options): Rename i386 options section.

	* config/i386/i386.h (TARGET_UNWIND_INFO): New.
	(TARGET_SWITCHES): Add -munwind-info.
	(MASK_NO_UNWIND_INFO): New.
	(NO_BUILTIN_SIZE_TYPE, NO_BUILTIN_PTRDIFF_TYPE): Define for
	biarch compilation.
	(ASM_OUTPUT_DOUBLE_INT): New.

	* config/i386/linux64.h: New spec file for Linux x86-64 support.
	* config.gcc: Fix tm_file settings for x86-64.
	* config/i386/x86-64.h: New file with OS independent x86-64
	definitions.
	* config/i386/biarch64.h: New file used to configure compiler
	to biarch/64bit compilation.

	* config/i386/i386.c: (override_options): Set flags default
	for 64bit compilation.

	* i386.c (legitimize_pic_address): Add missing bits of 64bit support.
	(ix86_expand_int_movcc): Optimize DImode conditional moves with
	constants on x86_64.
	(ix86_attr_length_immediate_default): Support MODE_DI.
	* i386.md (fixdi splitter): Add missing "&& 1" in splitter
	condition.
	(indirect_jump, tablejump): Turn into expander.

From-SVN: r45946
This commit is contained in:
Jan Hubicka 2001-10-02 10:59:42 +00:00
parent 80a497e4e9
commit 14f73b5a12
10 changed files with 431 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
gcc/ChangeLog
View File

@ -1,3 +1,37 @@
Tue Oct 2 12:46:01 CEST 2001 Bo Thorsen <bo@suse.co.uk>,
Andreas Jaeger <aj@suse.de>,
Jan Hubicka <jh@suse.cz>
* doc/invoke.texi (i386 Options): Document x86-64 options.
(i386 and x86-64 Options): Rename i386 options section.
* config/i386/i386.h (TARGET_UNWIND_INFO): New.
(TARGET_SWITCHES): Add -munwind-info.
(MASK_NO_UNWIND_INFO): New.
(NO_BUILTIN_SIZE_TYPE, NO_BUILTIN_PTRDIFF_TYPE): Define for
biarch compilation.
(ASM_OUTPUT_DOUBLE_INT): New.
* config/i386/linux64.h: New spec file for Linux x86-64 support.
* config.gcc: Fix tm_file settings for x86-64.
* config/i386/x86-64.h: New file with OS independent x86-64
definitions.
* config/i386/biarch64.h: New file used to configure compiler
to biarch/64bit compilation.
* config/i386/i386.c: (override_options): Set flags default
for 64bit compilation.
Tue Oct 2 12:46:01 CEST 2001 Jan Hubicka <jh@suse.cz>
* i386.c (legitimize_pic_address): Add missing bits of 64bit support.
(ix86_expand_int_movcc): Optimize DImode conditional moves with
constants on x86_64.
(ix86_attr_length_immediate_default): Support MODE_DI.
* i386.md (fixdi splitter): Add missing "&& 1" in splitter
condition.
(indirect_jump, tablejump): Turn into expander.
2001-10-02 Joseph S. Myers <jsm28@cam.ac.uk>
* c-common.c (c_format_attribute_table): Make format and

15
gcc/config.gcc
View File

@ -222,6 +222,9 @@ c*-convex-*)
i[34567]86-*-*)
cpu_type=i386
;;
x86_64-*-*)
cpu_type=i386
;;
hppa*-*-* | parisc*-*-*)
cpu_type=pa
;;
@ -1140,6 +1143,18 @@ i[34567]86-*-linux*) # Intel 80386's running GNU/Linux
thread_file='posix'
fi
;;
x86_64-*-linux*)
xmake_file=x-linux
tm_file="i386/biarch64.h i386/i386.h i386/att.h linux.h i386/x86-64.h \
i386/linux64.h"
tmake_file="t-slibgcc-elf-ver t-linux i386/t-crtstuff"
extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
gnu_ld=yes
float_format=i386
if test x$enable_threads = xyes; then
thread_file='posix'
fi
;;
i[34567]86-*-gnu*)
float_format=i386
;;

1
gcc/config/i386/att.h
View File

@ -32,6 +32,7 @@ Boston, MA 02111-1307, USA. */
#define ASM_SHORT "\t.value\t"
#define ASM_LONG "\t.long\t"
#define ASM_QUAD "\t.quad\t"
/* How to output an ASCII string constant. */

25
gcc/config/i386/biarch64.h Normal file
View File

@ -0,0 +1,25 @@
/* Make configure files to produce biarch compiler defaulting to 64bit mode.
This file must be included very first, while the OS specific file later
to overwrite otherwise wrong defaults.
Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by Bo Thorsen <bo@suse.de>.
This file is part of GNU CC.
GNU CC 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 2, or (at your option)
any later version.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#define TARGET_64BIT_DEFAULT
#define TARGET_BI_ARCH

181
gcc/config/i386/i386.c
View File

@ -984,6 +984,16 @@ override_options ()
if (flag_unsafe_math_optimizations)
target_flags &= ~MASK_IEEE_FP;
if (TARGET_64BIT)
{
if (TARGET_ALIGN_DOUBLE)
error ("-malign-double makes no sense in the 64bit mode.");
if (TARGET_RTD)
error ("-mrtd calling convention not supported in the 64bit mode.");
/* Enable by default the SSE and MMX builtins. */
target_flags |= MASK_SSE2 | MASK_SSE | MASK_MMX | MASK_128BIT_LONG_DOUBLE;
}
/* It makes no sense to ask for just SSE builtins, so MMX is also turned
on by -msse. */
if (TARGET_SSE)
@ -2214,7 +2224,7 @@ ix86_setup_incoming_varargs (cum, mode, type, pretend_size, no_rtl)
emit_insn (gen_rtx_SET(VOIDmode, tmp_reg,
plus_constant (save_area, 8 * REGPARM_MAX + 127)));
mem = gen_rtx_MEM (BLKmode, plus_constant (tmp_reg, -127));
set_mem_alias_set(mem, set);
set_mem_alias_set (mem, set);
/* And finally do the dirty job! */
emit_insn (gen_sse_prologue_save (mem, nsse_reg, GEN_INT (next_cum.sse_regno),
@ -2260,7 +2270,7 @@ ix86_va_start (stdarg_p, valist, nextarg)
if (TARGET_DEBUG_ARG)
fprintf (stderr, "va_start: words = %d, n_gpr = %d, n_fpr = %d\n",
words, n_gpr, n_fpr);
(int)words, (int)n_gpr, (int)n_fpr);
t = build (MODIFY_EXPR, TREE_TYPE (gpr), gpr,
build_int_2 (n_gpr * 8, 0));
@ -4735,37 +4745,63 @@ legitimize_pic_address (orig, reg)
if (local_symbolic_operand (addr, Pmode))
{
/* This symbol may be referenced via a displacement from the PIC
base address (@GOTOFF). */
current_function_uses_pic_offset_table = 1;
new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, addr), 7);
new = gen_rtx_CONST (Pmode, new);
new = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, new);
if (reg != 0)
/* In 64bit mode we can address such objects directly. */
if (TARGET_64BIT)
new = addr;
else
{
emit_move_insn (reg, new);
new = reg;
}
/* This symbol may be referenced via a displacement from the PIC
base address (@GOTOFF). */
current_function_uses_pic_offset_table = 1;
new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, addr), 7);
new = gen_rtx_CONST (Pmode, new);
new = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, new);
if (reg != 0)
{
emit_move_insn (reg, new);
new = reg;
}
}
}
else if (GET_CODE (addr) == SYMBOL_REF)
{
/* This symbol must be referenced via a load from the
Global Offset Table (@GOT). */
if (TARGET_64BIT)
{
current_function_uses_pic_offset_table = 1;
new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, addr), 15);
new = gen_rtx_CONST (Pmode, new);
new = gen_rtx_MEM (Pmode, new);
RTX_UNCHANGING_P (new) = 1;
set_mem_alias_set (new, ix86_GOT_alias_set ());
current_function_uses_pic_offset_table = 1;
new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, addr), 6);
new = gen_rtx_CONST (Pmode, new);
new = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, new);
new = gen_rtx_MEM (Pmode, new);
RTX_UNCHANGING_P (new) = 1;
set_mem_alias_set (new, ix86_GOT_alias_set ());
if (reg == 0)
reg = gen_reg_rtx (Pmode);
/* Use directly gen_movsi, otherwise the address is loaded
into register for CSE. We don't want to CSE this addresses,
instead we CSE addresses from the GOT table, so skip this. */
emit_insn (gen_movsi (reg, new));
new = reg;
}
else
{
/* This symbol must be referenced via a load from the
Global Offset Table (@GOT). */
if (reg == 0)
reg = gen_reg_rtx (Pmode);
emit_move_insn (reg, new);
new = reg;
current_function_uses_pic_offset_table = 1;
new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, addr), 6);
new = gen_rtx_CONST (Pmode, new);
new = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, new);
new = gen_rtx_MEM (Pmode, new);
RTX_UNCHANGING_P (new) = 1;
set_mem_alias_set (new, ix86_GOT_alias_set ());
if (reg == 0)
reg = gen_reg_rtx (Pmode);
emit_move_insn (reg, new);
new = reg;
}
}
else
{
@ -5141,7 +5177,13 @@ i386_dwarf_output_addr_const (file, x)
FILE *file;
rtx x;
{
#ifdef ASM_QUAD
fprintf (file, "%s", TARGET_64BIT ? ASM_QUAD : INT_ASM_OP);
#else
if (TARGET_64BIT)
abort ();
fprintf (file, "%s", INT_ASM_OP);
#endif
if (flag_pic)
output_pic_addr_const (file, x, '\0');
else
@ -7823,7 +7865,7 @@ ix86_expand_int_movcc (operands)
HImode insns, we'd be swallowed in word prefix ops. */
if (GET_MODE (operands[0]) != HImode
&& GET_MODE (operands[0]) != DImode
&& (GET_MODE (operands[0]) != DImode || TARGET_64BIT)
&& GET_CODE (operands[2]) == CONST_INT
&& GET_CODE (operands[3]) == CONST_INT)
{
@ -7852,10 +7894,13 @@ ix86_expand_int_movcc (operands)
if (reg_overlap_mentioned_p (out, ix86_compare_op0)
|| reg_overlap_mentioned_p (out, ix86_compare_op1))
tmp = gen_reg_rtx (SImode);
tmp = gen_reg_rtx (GET_MODE (operands[0]));
emit_insn (compare_seq);
emit_insn (gen_x86_movsicc_0_m1 (tmp));
if (GET_MODE (tmp) == DImode)
emit_insn (gen_x86_movdicc_0_m1_rex64 (tmp));
else
emit_insn (gen_x86_movsicc_0_m1 (tmp));
if (diff == 1)
{
@ -7867,7 +7912,12 @@ ix86_expand_int_movcc (operands)
* Size 5 - 8.
*/
if (ct)
emit_insn (gen_addsi3 (tmp, tmp, GEN_INT (ct)));
{
if (GET_MODE (tmp) == DImode)
emit_insn (gen_adddi3 (tmp, tmp, GEN_INT (ct)));
else
emit_insn (gen_addsi3 (tmp, tmp, GEN_INT (ct)));
}
}
else if (cf == -1)
{
@ -7878,7 +7928,10 @@ ix86_expand_int_movcc (operands)
*
* Size 8.
*/
emit_insn (gen_iorsi3 (tmp, tmp, GEN_INT (ct)));
if (GET_MODE (tmp) == DImode)
emit_insn (gen_iordi3 (tmp, tmp, GEN_INT (ct)));
else
emit_insn (gen_iorsi3 (tmp, tmp, GEN_INT (ct)));
}
else if (diff == -1 && ct)
{
@ -7890,9 +7943,18 @@ ix86_expand_int_movcc (operands)
*
* Size 8 - 11.
*/
emit_insn (gen_one_cmplsi2 (tmp, tmp));
if (cf)
emit_insn (gen_addsi3 (tmp, tmp, GEN_INT (cf)));
if (GET_MODE (tmp) == DImode)
{
emit_insn (gen_one_cmpldi2 (tmp, tmp));
if (cf)
emit_insn (gen_adddi3 (tmp, tmp, GEN_INT (cf)));
}
else
{
emit_insn (gen_one_cmplsi2 (tmp, tmp));
if (cf)
emit_insn (gen_addsi3 (tmp, tmp, GEN_INT (cf)));
}
}
else
{
@ -7904,10 +7966,20 @@ ix86_expand_int_movcc (operands)
*
* Size 8 - 11.
*/
emit_insn (gen_andsi3 (tmp, tmp, GEN_INT (trunc_int_for_mode
(cf - ct, SImode))));
if (ct)
emit_insn (gen_addsi3 (tmp, tmp, GEN_INT (ct)));
if (GET_MODE (tmp) == DImode)
{
emit_insn (gen_anddi3 (tmp, tmp, GEN_INT (trunc_int_for_mode
(cf - ct, DImode))));
if (ct)
emit_insn (gen_adddi3 (tmp, tmp, GEN_INT (ct)));
}
else
{
emit_insn (gen_andsi3 (tmp, tmp, GEN_INT (trunc_int_for_mode
(cf - ct, SImode))));
if (ct)
emit_insn (gen_addsi3 (tmp, tmp, GEN_INT (ct)));
}
}
if (tmp != out)
@ -7961,43 +8033,28 @@ ix86_expand_int_movcc (operands)
/* On x86_64 the lea instruction operates on Pmode, so we need to get arithmetics
done in proper mode to match. */
if (diff == 1)
{
if (Pmode != SImode)
tmp = gen_lowpart (Pmode, out);
else
tmp = out;
}
tmp = out;
else
{
rtx out1;
if (Pmode != SImode)
out1 = gen_lowpart (Pmode, out);
else
out1 = out;
tmp = gen_rtx_MULT (Pmode, out1, GEN_INT (diff & ~1));
out1 = out;
tmp = gen_rtx_MULT (GET_MODE (out), out1, GEN_INT (diff & ~1));
nops++;
if (diff & 1)
{
tmp = gen_rtx_PLUS (Pmode, tmp, out1);
tmp = gen_rtx_PLUS (GET_MODE (out), tmp, out1);
nops++;
}
}
if (cf != 0)
{
tmp = gen_rtx_PLUS (Pmode, tmp, GEN_INT (cf));
tmp = gen_rtx_PLUS (GET_MODE (out), tmp, GEN_INT (cf));
nops++;
}
if (tmp != out
&& (GET_CODE (tmp) != SUBREG || SUBREG_REG (tmp) != out))
{
if (Pmode != SImode)
tmp = gen_rtx_SUBREG (SImode, tmp, 0);
/* ??? We should to take care for outputing non-lea arithmetics
for Pmode != SImode case too, but it is quite tricky and not
too important, since all TARGET_64BIT machines support real
conditional moves. */
if (nops == 1 && Pmode == SImode)
if (nops == 1)
{
rtx clob;
@ -9694,6 +9751,10 @@ ix86_attr_length_immediate_default (insn, shortform)
case MODE_SI:
len+=4;
break;
/* Immediates for DImode instructions are encoded as 32bit sign extended values. */
case MODE_DI:
len+=4;
break;
default:
fatal_insn ("Unknown insn mode", insn);
}

12
gcc/config/i386/i386.h
View File

@ -484,6 +484,11 @@ extern int ix86_arch;
#endif
#endif /* CPP_CPU_DEFAULT_SPEC */
#ifdef TARGET_BI_ARCH
#define NO_BUILTIN_SIZE_TYPE
#define NO_BUILTIN_PTRDIFF_TYPE
#endif
#ifdef NO_BUILTIN_SIZE_TYPE
#define CPP_CPU32_SIZE_TYPE_SPEC \
" -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int"
@ -653,7 +658,7 @@ extern int ix86_arch;
the stack, which results in aligned frames for functions called from
main, though it does nothing for the alignment of main itself. */
#define FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN \
(ix86_preferred_stack_boundary > STACK_BOUNDARY)
(ix86_preferred_stack_boundary > STACK_BOUNDARY && !TARGET_64BIT)
/* Allocation boundary for the code of a function. */
#define FUNCTION_BOUNDARY 16
@ -2910,6 +2915,11 @@ do { long l; \
output_addr_const (FILE,(VALUE)), \
putc('\n',FILE))
#define ASM_OUTPUT_DOUBLE_INT(FILE,VALUE) \
( fprintf (FILE, "%s\t", ASM_QUAD), \
output_addr_const (FILE,(VALUE)), \
putc('\n',FILE))
/* Likewise for `char' and `short' constants. */
#define ASM_OUTPUT_SHORT(FILE,VALUE) \

28
gcc/config/i386/i386.md
View File

@ -4688,7 +4688,7 @@
&& !reload_completed && !reload_in_progress
&& (!SSE_FLOAT_MODE_P (GET_MODE (operands[1])) || !TARGET_64BIT)"
"#"
""
"&& 1"
[(const_int 0)]
{
operands[2] = assign_386_stack_local (HImode, 1);
@ -12956,9 +12956,21 @@
"jmp\t%l0"
[(set_attr "type" "ibr")])
(define_insn "indirect_jump"
[(set (pc) (match_operand:P 0 "nonimmediate_operand" "rm"))]
(define_expand "indirect_jump"
[(set (pc) (match_operand 0 "nonimmediate_operand" "rm"))]
""
"")
(define_insn "*indirect_jump"
[(set (pc) (match_operand:SI 0 "nonimmediate_operand" "rm"))]
"!TARGET_64BIT"
"jmp\t%A0"
[(set_attr "type" "ibr")
(set_attr "length_immediate" "0")])
(define_insn "*indirect_jump_rtx64"
[(set (pc) (match_operand:DI 0 "nonimmediate_operand" "rm"))]
"TARGET_64BIT"
"jmp\t%A0"
[(set_attr "type" "ibr")
(set_attr "length_immediate" "0")])
@ -12989,7 +13001,15 @@
(define_insn "*tablejump_1"
[(set (pc) (match_operand:SI 0 "nonimmediate_operand" "rm"))
(use (label_ref (match_operand 1 "" "")))]
""
"!TARGET_64BIT"
"jmp\t%A0"
[(set_attr "type" "ibr")
(set_attr "length_immediate" "0")])
(define_insn "*tablejump_1_rtx64"
[(set (pc) (match_operand:DI 0 "nonimmediate_operand" "rm"))
(use (label_ref (match_operand 1 "" "")))]
"TARGET_64BIT"
"jmp\t%A0"
[(set_attr "type" "ibr")
(set_attr "length_immediate" "0")])

48
gcc/config/i386/linux64.h Normal file
View File

@ -0,0 +1,48 @@
/* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format.
Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h.
This file is part of GNU CC.
GNU CC 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 2, or (at your option)
any later version.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#define LINUX_DEFAULT_ELF
#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)");
#undef CPP_PREDEFINES
#define CPP_PREDEFINES "-D__ELF__ -Dunix -Dlinux -Asystem(posix)"
#undef CPP_SPEC
#define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT} %{!m32:-D__LONG_MAX__=9223372036854775807L}"
/* Provide a LINK_SPEC. Here we provide support for the special GCC
options -static and -shared, which allow us to link things in one
of these three modes by applying the appropriate combinations of
options at link-time.
When the -shared link option is used a final link is not being
done. */
#undef LINK_SPEC
#define LINK_SPEC "%{!m32:-m elf_x86_64} %{m32:-m elf_i386} {shared:-shared} \
%{!shared: \
%{!static: \
%{rdynamic:-export-dynamic} \
%{!dynamic-linker:-dynamic-linker /lib/ld64.so.1}} \
%{static:-static}}"

118
gcc/config/i386/x86-64.h Normal file
View File

@ -0,0 +1,118 @@
/* OS independent definitions for AMD x86-64.
Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by Bo Thorsen <bo@suse.de>.
This file is part of GNU CC.
GNU CC 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 2, or (at your option)
any later version.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* The svr4 ABI for the i386 says that records and unions are returned
in memory. */
#undef DEFAULT_PCC_STRUCT_RETURN
#define DEFAULT_PCC_STRUCT_RETURN 1
#undef ASM_COMMENT_START
#define ASM_COMMENT_START "#"
/* 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, BODY, VALUE, REL) \
if (TARGET_64BIT) \
fprintf (FILE, "\t.long %s%d-.+4+(.-%s%d)\n", LPREFIX, VALUE, LPREFIX, REL); \
else \
fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
/* Indicate that jump tables go in the text section. This is
necessary when compiling PIC code. */
#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic && !TARGET_64BIT)
#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(n) \
(TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
/* Output assembler code to FILE to call the profiler. */
#define NO_PROFILE_COUNTERS
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABELNO) \
{ \
if (TARGET_64BIT && flag_pic) \
fprintf (FILE, "\tcall\t*mcount@PLT\n"); \
else if (flag_pic) \
fprintf (FILE, "\tcall\t*mcount@GOT(%%ebx)\n"); \
else \
fprintf (FILE, "\tcall\tmcount\n"); \
}
#undef SIZE_TYPE
#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
#undef CC1_SPEC
#define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
#undef ASM_SPEC
#define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \
%{Wa,*:%*} %{m32:--32}"
/* A C statement (sans semicolon) to output to the stdio stream
FILE the assembler definition of uninitialized global DECL named
NAME whose size is SIZE bytes and alignment is ALIGN bytes.
Try to use asm_output_aligned_bss to implement this macro. */
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
bytes if it is within MAX_SKIP bytes.
This is used to align code labels according to Intel recommendations. */
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
do { \
if ((LOG) != 0) { \
if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
} \
} while (0)
#endif
/* i386 System V Release 4 uses DWARF debugging info.
x86-64 ABI specifies DWARF2. */
#undef DWARF2_DEBUGGING_INFO
#undef DWARF_DEBUGGING_INFO
#define DWARF2_DEBUGGING_INFO
#define DWARF2_UNWIND_INFO 1
/* Incorrectly autodetected in cross compilation. */
#undef HAVE_AS_DWARF2_DEBUG_LINE
#define HAVE_AS_DWARF2_DEBUG_LINE
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG

40
gcc/doc/invoke.texi
View File

@ -464,7 +464,7 @@ in the following sections.
-mabi=32 -mabi=n32 -mabi=64 -mabi=eabi @gol
-mfix7000 -mno-crt0}
@emph{i386 Options}
@emph{i386 and x86-64 Options}
@gccoptlist{
-mcpu=@var{cpu-type} -march=@var{cpu-type} @gol
-mintel-syntax -mieee-fp -mno-fancy-math-387 @gol
@ -474,7 +474,9 @@ in the following sections.
-mmmx -msse -m3dnow @gol
-mthreads -mno-align-stringops -minline-all-stringops @gol
-mpush-args -maccumulate-outgoing-args -m128bit-long-double @gol
-m96bit-long-double -mregparm=@var{num} -momit-leaf-frame-pointer}
-m96bit-long-double -mregparm=@var{num} -momit-leaf-frame-pointer @gol
-mno-red-zone@gol
-m32 -m64}
@emph{HPPA Options}
@gccoptlist{
@ -5077,7 +5079,7 @@ that macro, which enables you to change the defaults.
* RS/6000 and PowerPC Options::
* RT Options::
* MIPS Options::
* i386 Options::
* i386 and x86-64 Options::
* HPPA Options::
* Intel 960 Options::
* DEC Alpha Options::
@ -7418,12 +7420,15 @@ options is also defined by that macro, which enables you to change the
defaults.
@end ifset
@node i386 Options
@subsection Intel 386 Options
@node i386 and x86-64 Options
@subsection Intel 386 and AMD x86-64 Options
@cindex i386 Options
@cindex x86-64 Options
@cindex Intel 386 Options
@cindex AMD x86-64 Options
These @samp{-m} options are defined for the i386 family of computers:
These @samp{-m} options are defined for the i386 and x86-64 family of
computers:
@table @gcctabopt
@item -mcpu=@var{cpu-type}
@ -8027,6 +8032,29 @@ makes an extra register available in leaf functions. The option
which might make debugging harder.
@end table
These @samp{-m} switches are supported in addition to the above
on AMD x86-64 processors in 64-bit environments.
@table @gcctabopt
@item -m32
@itemx -m64
@opindex m32
@opindex m64
Generate code for a 32-bit or 64-bit environment.
The 32-bit environment sets int, long and pointer to 32 bits and
generates code that runs on any i386 system.
The 64-bit environment sets int to 32 bits and long and pointer
to 64 bits and generates code for AMD's x86-64 architecture.
@item -mno-red-zone
@opindex no-red-zone
Do not use a so called red zone for x86-64 code. The red zone is mandated
by the x86-64 ABI, it is a 128-byte area beyond the location of the
stack pointer that will not be modified by signal or interrupt handlers
and therefore can be used for temporary data without adjusting the stack
pointer. The flag @option{-mno-red-zone} disables this red zone.
@end table
@node HPPA Options
@subsection HPPA Options
@cindex HPPA Options