1/* OS independent definitions for AMD x86-64.
2   Copyright (C) 2001, 2005, 2007, 2009 Free Software Foundation, Inc.
3   Contributed by Bo Thorsen <bo@suse.de>.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17Under Section 7 of GPL version 3, you are granted additional
18permissions described in the GCC Runtime Library Exception, version
193.1, as published by the Free Software Foundation.
20
21You should have received a copy of the GNU General Public License and
22a copy of the GCC Runtime Library Exception along with this program;
23see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
24<http://www.gnu.org/licenses/>.  */
25
26#undef ASM_COMMENT_START
27#define ASM_COMMENT_START "#"
28
29#undef DBX_REGISTER_NUMBER
30#define DBX_REGISTER_NUMBER(n) \
31  (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
32
33/* Output assembler code to FILE to call the profiler.  */
34#define NO_PROFILE_COUNTERS 1
35
36#undef MCOUNT_NAME
37#define MCOUNT_NAME "mcount"
38
39#undef SIZE_TYPE
40#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
41
42#undef PTRDIFF_TYPE
43#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
44
45#undef WCHAR_TYPE
46#define WCHAR_TYPE "int"
47
48#undef WCHAR_TYPE_SIZE
49#define WCHAR_TYPE_SIZE 32
50
51#undef CC1_SPEC
52#define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
53
54#undef ASM_SPEC
55#define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \
56 %{Wa,*:%*} %{m32:--32} %{m64:--64}"
57
58#undef ASM_OUTPUT_ALIGNED_BSS
59#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
60  x86_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
61
62#undef  ASM_OUTPUT_ALIGNED_COMMON
63#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)		\
64  x86_elf_aligned_common (FILE, NAME, SIZE, ALIGN);
65
66/* This is used to align code labels according to Intel recommendations.  */
67
68#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
69#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP)			\
70  do {									\
71    if ((LOG) != 0) {							\
72      if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));	\
73      else {								\
74	fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));	\
75	/* Make sure that we have at least 8 byte alignment if > 8 byte \
76	   alignment is preferred.  */					\
77	if ((LOG) > 3							\
78	    && (1 << (LOG)) > ((MAX_SKIP) + 1)				\
79	    && (MAX_SKIP) >= 7)						\
80	  fputs ("\t.p2align 3\n", (FILE));				\
81      }									\
82    }									\
83  } while (0)
84#undef  ASM_OUTPUT_MAX_SKIP_PAD
85#define ASM_OUTPUT_MAX_SKIP_PAD(FILE, LOG, MAX_SKIP)			\
86  if ((LOG) != 0)							\
87    {									\
88      if ((MAX_SKIP) == 0)						\
89        fprintf ((FILE), "\t.p2align %d\n", (LOG));			\
90      else								\
91        fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));	\
92    }
93#endif
94
95
96/* i386 System V Release 4 uses DWARF debugging info.
97   x86-64 ABI specifies DWARF2.  */
98
99#define DWARF2_DEBUGGING_INFO 1
100#define DWARF2_UNWIND_INFO 1
101
102#undef PREFERRED_DEBUGGING_TYPE
103#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
104
105#undef TARGET_ASM_SELECT_SECTION
106#define TARGET_ASM_SELECT_SECTION  x86_64_elf_select_section
107
108#undef TARGET_ASM_UNIQUE_SECTION
109#define TARGET_ASM_UNIQUE_SECTION  x86_64_elf_unique_section
110