1/* Definitions for Intel 386 running system V, using gas.
2   Copyright (C) 1992, 1996, 2000, 2002 Free Software Foundation, Inc.
3
4This file is part of GNU CC.
5
6GNU CC is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2, or (at your option)
9any later version.
10
11GNU CC is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GNU CC; see the file COPYING.  If not, write to
18the Free Software Foundation, 59 Temple Place - Suite 330,
19Boston, MA 02111-1307, USA.  */
20
21#define TARGET_VERSION fprintf (stderr, " (80386, ATT syntax)");
22
23/* Add stuff that normally comes from i386/sysv3.h */
24
25/* longjmp may fail to restore the registers if called from the same
26   function that called setjmp.  To compensate, the compiler avoids
27   putting variables in registers in functions that use both setjmp
28   and longjmp.  */
29
30#define NON_SAVING_SETJMP \
31  (current_function_calls_setjmp && current_function_calls_longjmp)
32
33/* longjmp may fail to restore the stack pointer if the saved frame
34   pointer is the same as the caller's frame pointer.  Requiring a frame
35   pointer in any function that calls setjmp or longjmp avoids this
36   problem, unless setjmp and longjmp are called from the same function.
37   Since a frame pointer will be required in such a function, it is OK
38   that the stack pointer is not restored.  */
39
40#undef SUBTARGET_FRAME_POINTER_REQUIRED
41#define SUBTARGET_FRAME_POINTER_REQUIRED \
42  (current_function_calls_setjmp || current_function_calls_longjmp)
43
44/* Modify ASM_OUTPUT_LOCAL slightly to test -msvr3-shlib, adapted to gas  */
45#undef ASM_OUTPUT_LOCAL
46#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)	\
47  do {							\
48    int align = exact_log2 (ROUNDED);			\
49    if (align > 2) align = 2;				\
50    if (TARGET_SVR3_SHLIB)				\
51      {							\
52	data_section ();				\
53	ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \
54	ASM_OUTPUT_LABEL ((FILE), (NAME));		\
55	fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED));	\
56      }							\
57    else						\
58      {							\
59	fputs (".lcomm ", (FILE));			\
60	assemble_name ((FILE), (NAME));			\
61	fprintf ((FILE), ",%u\n", (ROUNDED));		\
62      }							\
63  } while (0)
64
65/* Add stuff that normally comes from i386/sysv3.h via svr3.h */
66
67/* Define the actual types of some ANSI-mandated types.  These
68   definitions should work for most SVR3 systems.  */
69
70#undef SIZE_TYPE
71#define SIZE_TYPE "unsigned int"
72
73#undef PTRDIFF_TYPE
74#define PTRDIFF_TYPE "int"
75
76#undef WCHAR_TYPE
77#define WCHAR_TYPE "long int"
78
79#undef WCHAR_TYPE_SIZE
80#define WCHAR_TYPE_SIZE BITS_PER_WORD
81
82/* ??? This stuff is copied from config/svr3.h.  In the future,
83   this file should be rewritten to include config/svr3.h
84   and override what isn't right.  */
85
86#define INIT_SECTION_ASM_OP     "\t.section\t.init"
87#define FINI_SECTION_ASM_OP     "\t.section .fini,\"x\""
88#define CTORS_SECTION_ASM_OP	INIT_SECTION_ASM_OP
89#define DTORS_SECTION_ASM_OP    FINI_SECTION_ASM_OP
90
91/* CTOR_LIST_BEGIN and CTOR_LIST_END are machine-dependent
92   because they push on the stack.  */
93/* This is copied from i386/sysv3.h.  */
94
95#define CTOR_LIST_BEGIN				\
96  asm (INIT_SECTION_ASM_OP);			\
97  asm ("pushl $0")
98#define CTOR_LIST_END CTOR_LIST_BEGIN
99
100/* Constructor list on stack is in reverse order.  Go to the end of the
101   list and go backwards to call constructors in the right order.  */
102#define DO_GLOBAL_CTORS_BODY					\
103do {								\
104  func_ptr *p, *beg = alloca (0);				\
105  for (p = beg; *p; p++)					\
106    ;								\
107  while (p != beg)						\
108    (*--p) ();							\
109} while (0)
110
111#undef EXTRA_SECTIONS
112#define EXTRA_SECTIONS in_init, in_fini
113
114#undef EXTRA_SECTION_FUNCTIONS
115#define EXTRA_SECTION_FUNCTIONS					\
116  INIT_SECTION_FUNCTION						\
117  FINI_SECTION_FUNCTION
118
119#define INIT_SECTION_FUNCTION					\
120void								\
121init_section ()							\
122{								\
123  if (in_section != in_init)					\
124    {								\
125      fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP);	\
126      in_section = in_init;					\
127    }								\
128}
129
130#define FINI_SECTION_FUNCTION					\
131void								\
132fini_section ()							\
133{								\
134  if (in_section != in_fini)					\
135    {								\
136      fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP);	\
137      in_section = in_fini;					\
138    }								\
139}
140
141#define TARGET_ASM_CONSTRUCTOR  ix86_svr3_asm_out_constructor
142