1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/* Definitions of target machine for GNU compiler. MIPS R4000 version with
GOFAST floating point library.
Copyright (C) 1994, 1995, 1996, 1997, 1999, 2000, 2002
Free Software Foundation, Inc.
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. */
#undef OBJECT_FORMAT_COFF
#undef EXTENDED_COFF
#undef SDB_DEBUGGING_INFO
#define DBX_DEBUGGING_INFO 1
#define DWARF2_DEBUGGING_INFO 1
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
#undef SUBTARGET_ASM_DEBUGGING_SPEC
#define SUBTARGET_ASM_DEBUGGING_SPEC "-g0"
/* Biggest alignment supported by the object file format of this
machine. Use this macro to limit the alignment which can be
specified using the `__attribute__ ((aligned (N)))' construct. If
not defined, the default value is `BIGGEST_ALIGNMENT'. */
#undef MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT (32768*8)
/* Switch into a generic section. */
#undef TARGET_ASM_NAMED_SECTION
#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
/* Given that Irix has it's own headers, not having TARGET_GAS here
seems a mistake. If we actually need to be prepared for file
switching, then we need a custom TARGET_ASM_NAMED_SECTION too. */
#undef TEXT_SECTION
#define TEXT_SECTION() \
do { \
if (TARGET_FILE_SWITCHING) \
abort (); \
fputs (TEXT_SECTION_ASM_OP, asm_out_file); \
fputc ('\n', asm_out_file); \
} while (0)
/* The following macro defines the format used to output the second
operand of the .type assembler directive. Different svr4 assemblers
expect various different forms for this operand. The one given here
is just a default. You may need to override it in your machine-
specific tm.h file (depending upon the particulars of your assembler). */
#define TYPE_OPERAND_FMT "@%s"
/* Define the strings used for the special svr4 .type and .size directives.
These strings generally do not vary from one system running svr4 to
another, but if a given system (e.g. m88k running svr) needs to use
different pseudo-op names for these, they may be overridden in the
file which includes this one. */
#undef TYPE_ASM_OP
#undef SIZE_ASM_OP
#define TYPE_ASM_OP "\t.type\t"
#define SIZE_ASM_OP "\t.size\t"
/* These macros generate the special .type and .size directives which
are used to set the corresponding fields of the linker symbol table
entries in an ELF object file under SVR4. These macros also output
the starting labels for the relevant functions/objects. */
/* Write the extra assembler code needed to declare an object properly. */
#undef ASM_DECLARE_OBJECT_NAME
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
do { \
HOST_WIDE_INT size; \
ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
size_directive_output = 0; \
if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
{ \
size_directive_output = 1; \
size = int_size_in_bytes (TREE_TYPE (DECL)); \
ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
} \
mips_declare_object (FILE, NAME, "", ":\n", 0); \
} while (0)
/* Output the size directive for a decl in rest_of_decl_compilation
in the case where we did not do so before the initializer.
Once we find the error_mark_node, we know that the value of
size_directive_output was set
by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
#undef ASM_FINISH_DECLARE_OBJECT
#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
do { \
const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
HOST_WIDE_INT size; \
if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
&& ! AT_END && TOP_LEVEL \
&& DECL_INITIAL (DECL) == error_mark_node \
&& !size_directive_output) \
{ \
size_directive_output = 1; \
size = int_size_in_bytes (TREE_TYPE (DECL)); \
ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
} \
} while (0)
#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
do { fputc ( '\t', FILE); \
assemble_name (FILE, LABEL1); \
fputs ( " = ", FILE); \
assemble_name (FILE, LABEL2); \
fputc ( '\n', FILE); \
} while (0)
/* Note about .weak vs. .weakext
The mips native assemblers support .weakext, but not .weak.
mips-elf gas supports .weak, but not .weakext.
mips-elf gas has been changed to support both .weak and .weakext,
but until that support is generally available, the 'if' below
should serve. */
#undef ASM_WEAKEN_LABEL
#define ASM_WEAKEN_LABEL(FILE,NAME) ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,0)
#define ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,VALUE) \
do { \
if (TARGET_GAS) \
fputs ("\t.weak\t", FILE); \
else \
fputs ("\t.weakext\t", FILE); \
assemble_name (FILE, NAME); \
if (VALUE) \
{ \
fputc (' ', FILE); \
assemble_name (FILE, VALUE); \
} \
fputc ('\n', FILE); \
} while (0)
#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
#define TARGET_ASM_UNIQUE_SECTION mips_unique_section
/* A list of other sections which the compiler might be "in" at any
given time. */
#undef EXTRA_SECTIONS
#define EXTRA_SECTIONS in_sdata
#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS \
SECTION_FUNCTION_TEMPLATE(sdata_section, in_sdata, SDATA_SECTION_ASM_OP)
#define SECTION_FUNCTION_TEMPLATE(FN, ENUM, OP) \
void FN () \
{ \
if (in_section != ENUM) \
{ \
fprintf (asm_out_file, "%s\n", OP); \
in_section = ENUM; \
} \
}
/* On elf, we *do* have support for the .init and .fini sections, and we
can put stuff in there to be executed before and after `main'. We let
crtstuff.c and other files know this by defining the following symbols.
The definitions say how to change sections to the .init and .fini
sections. This is the same for all known elf assemblers. */
#undef INIT_SECTION_ASM_OP
#define INIT_SECTION_ASM_OP "\t.section\t.init"
#undef FINI_SECTION_ASM_OP
#define FINI_SECTION_ASM_OP "\t.section\t.fini"
/* Don't set the target flags, this is done by the linker script */
#undef LIB_SPEC
#define LIB_SPEC ""
#undef STARTFILE_SPEC
#if defined(HAVE_MIPS_LIBGLOSS_STARTUP_DIRECTIVES) \
|| (MIPS_ABI_DEFAULT == ABI_MEABI)
#define STARTFILE_SPEC "crti%O%s crtbegin%O%s"
#else
#define STARTFILE_SPEC "crti%O%s crtbegin%O%s %{!mno-crt0:crt0%O%s}"
#endif
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend%O%s crtn%O%s"
/* We support #pragma. */
#define HANDLE_SYSV_PRAGMA 1
|
