1 /* Configuration for an OpenBSD i386 target.
3 Copyright (C) 1999 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* This is tested by i386gas.h. */
23 #define YES_UNDERSCORES
25 #include <i386/gstabs.h>
27 /* Get perform_* macros to build libgcc.a. */
28 #include <i386/perform.h>
30 /* Get generic OpenBSD definitions. */
34 /* This goes away when the math-emulator is fixed */
36 #define TARGET_DEFAULT 0701 /* TARGET_NO_FANCY_MATH_387 | ... */
38 /* Run-time target specifications */
39 #define CPP_PREDEFINES "-D__unix__ -D__i386__ -D__OpenBSD__ -Asystem(unix) -Asystem(OpenBSD) -Acpu(i386) -Amachine(i386)"
41 /* Layout of source language data types. */
43 /* This must agree with <machine/ansi.h> */
45 #define SIZE_TYPE "unsigned int"
48 #define PTRDIFF_TYPE "int"
51 #define WCHAR_TYPE "int"
53 #undef WCHAR_TYPE_SIZE
54 #define WCHAR_TYPE_SIZE 32
56 /* Assembler format: overall framework. */
59 #define ASM_APP_ON "#APP\n"
62 #define ASM_APP_OFF "#NO_APP\n"
64 /* The following macros were originally stolen from i386v4.h.
65 These have to be defined to get PIC code correct. */
67 /* Assembler format: dispatch tables. */
69 /* How to output an element of a case-vector that is relative.
70 This is only used for PIC code. See comments by the `casesi' insn in
71 i386.md for an explanation of the expression this outputs. */
72 #undef ASM_OUTPUT_ADDR_DIFF_ELT
73 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
74 fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
76 /* Assembler format: sections. */
78 /* Indicate when jump tables go in the text section. This is
79 necessary when compiling PIC code. */
80 #define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
82 /* Stack & calling: aggregate returns. */
84 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
85 we want to retain compatibility with older gcc versions. */
86 #define DEFAULT_PCC_STRUCT_RETURN 0
88 /* Assembler format: alignment output. */
90 /* Kludgy test: when gas is upgraded, it will have p2align, and no problems
92 #ifndef HAVE_GAS_MAX_SKIP_P2ALIGN
93 /* i386 OpenBSD still uses an older gas that doesn't insert nops by default
94 when the .align directive demands to insert extra space in the text
96 #undef ASM_OUTPUT_ALIGN
97 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
98 if ((LOG)!=0) fprintf ((FILE), "\t.align %d,0x90\n", (LOG))
101 /* Stack & calling: profiling. */
103 /* OpenBSD's profiler recovers all information from the stack pointer.
104 The icky part is not here, but in machine/profile.h. */
105 #undef FUNCTION_PROFILER
106 #define FUNCTION_PROFILER(FILE, LABELNO) \
107 fputs (flag_pic ? "\tcall mcount@PLT\n": "\tcall mcount\n", FILE);
109 /* Assembler format: exception region output. */
111 /* All configurations that don't use elf must be explicit about not using
112 dwarf unwind information. egcs doesn't try too hard to check internal
113 configuration files... */
114 #define DWARF2_UNWIND_INFO 0
116 /* Assembler format: alignment output. */
118 /* A C statement to output to the stdio stream FILE an assembler
119 command to advance the location counter to a multiple of 1<<LOG
120 bytes if it is within MAX_SKIP bytes.
122 This will be used to align code labels according to Intel
123 recommendations, in prevision of binutils upgrade. */
124 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
125 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
128 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
129 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
133 /* Note that we pick up ASM_OUTPUT_MI_THUNK from unix.h. */