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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
|
/* Assembly macros for 64-bit PowerPC.
Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdeps/powerpc/sysdep.h>
#ifdef __ELF__
#ifdef __ASSEMBLER__
/* Support macros for CALL_MCOUNT. */
.macro SAVE_ARG NARG
.if \NARG
SAVE_ARG \NARG-1
std 2+\NARG,-72+8*(\NARG)(1)
.endif
.endm
.macro REST_ARG NARG
.if \NARG
REST_ARG \NARG-1
ld 2+\NARG,40+8*(\NARG)(1)
.endif
.endm
/* If compiled for profiling, call `_mcount' at the start of each function.
see ppc-mcount.S for more details. */
.macro CALL_MCOUNT NARG
#ifdef PROF
mflr r0
SAVE_ARG \NARG
std r0,16(r1)
stdu r1,-112(r1)
bl JUMPTARGET (_mcount)
ld r0,128(r1)
REST_ARG \NARG
addi r1,r1,112
mtlr r0
#endif
.endm
#ifdef USE_PPC64_OVERLAPPING_OPD
# define OPD_ENT(name) .quad BODY_LABEL (name), .TOC.@tocbase
#else
# define OPD_ENT(name) .quad BODY_LABEL (name), .TOC.@tocbase, 0
#endif
#define ENTRY_1(name) \
.section ".text"; \
.type BODY_LABEL(name),@function; \
.globl name; \
.section ".opd","aw"; \
.align 3; \
name##: OPD_ENT (name); \
.previous;
#ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define DOT_LABEL(X) .##X
# define BODY_LABEL(X) .##X
# define ENTRY_2(name) \
.globl BODY_LABEL(name); \
ENTRY_1(name) \
.size name, 24;
# define END_2(name) \
.size BODY_LABEL(name),.-BODY_LABEL(name);
#else
# define DOT_LABEL(X) X
# define BODY_LABEL(X) .LY##X
# define ENTRY_2(name) \
.type name,@function; \
ENTRY_1(name)
# define END_2(name) \
.size name,.-BODY_LABEL(name); \
.size BODY_LABEL(name),.-BODY_LABEL(name);
#endif
#define ENTRY(name) \
ENTRY_2(name) \
.align ALIGNARG(2); \
BODY_LABEL(name):
#define EALIGN_W_0 /* No words to insert. */
#define EALIGN_W_1 nop
#define EALIGN_W_2 nop;nop
#define EALIGN_W_3 nop;nop;nop
#define EALIGN_W_4 EALIGN_W_3;nop
#define EALIGN_W_5 EALIGN_W_4;nop
#define EALIGN_W_6 EALIGN_W_5;nop
#define EALIGN_W_7 EALIGN_W_6;nop
/* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes
past a 2^alignt boundary. */
#define EALIGN(name, alignt, words) \
ENTRY_2(name) \
.align ALIGNARG(alignt); \
EALIGN_W_##words; \
BODY_LABEL(name):
/* Local labels stripped out by the linker. */
#undef L
#define L(x) .L##x
#define tostring(s) #s
#define stringify(s) tostring(s)
#define XGLUE(a,b) a##b
#define GLUE(a,b) XGLUE(a,b)
#define LT_LABEL(name) GLUE(.LT,name)
#define LT_LABELSUFFIX(name,suffix) GLUE(GLUE(.LT,name),suffix)
/* Support Traceback tables */
#define TB_ASM 0x000c000000000000
#define TB_GLOBALLINK 0x0000800000000000
#define TB_IS_EPROL 0x0000400000000000
#define TB_HAS_TBOFF 0x0000200000000000
#define TB_INT_PROC 0x0000100000000000
#define TB_HAS_CTL 0x0000080000000000
#define TB_TOCLESS 0x0000040000000000
#define TB_FP_PRESENT 0x0000020000000000
#define TB_LOG_ABORT 0x0000010000000000
#define TB_INT_HANDL 0x0000008000000000
#define TB_NAME_PRESENT 0x0000004000000000
#define TB_USES_ALLOCA 0x0000002000000000
#define TB_SAVES_CR 0x0000000200000000
#define TB_SAVES_LR 0x0000000100000000
#define TB_STORES_BC 0x0000000080000000
#define TB_FIXUP 0x0000000040000000
#define TB_FP_SAVED(fprs) (((fprs) & 0x3f) << 24)
#define TB_GPR_SAVED(gprs) (((fprs) & 0x3f) << 16)
#define TB_FIXEDPARMS(parms) (((parms) & 0xff) << 8)
#define TB_FLOATPARMS(parms) (((parms) & 0x7f) << 1)
#define TB_PARMSONSTK 0x0000000000000001
#define PPC_HIGHER(v) (((v) >> 32) & 0xffff)
#define TB_DEFAULT TB_ASM | TB_HAS_TBOFF | TB_NAME_PRESENT
#define TRACEBACK(name) \
LT_LABEL(name): ; \
.long 0 ; \
.quad TB_DEFAULT ; \
.long LT_LABEL(name)-BODY_LABEL(name) ; \
.short LT_LABELSUFFIX(name,_name_end)-LT_LABELSUFFIX(name,_name_start) ; \
LT_LABELSUFFIX(name,_name_start): ;\
.ascii stringify(name) ; \
LT_LABELSUFFIX(name,_name_end): ; \
.align 2 ;
#define TRACEBACK_MASK(name,mask) \
LT_LABEL(name): ; \
.long 0 ; \
.quad TB_DEFAULT | mask ; \
.long LT_LABEL(name)-BODY_LABEL(name) ; \
.short LT_LABELSUFFIX(name,_name_end)-LT_LABELSUFFIX(name,_name_start) ; \
LT_LABELSUFFIX(name,_name_start): ;\
.ascii stringify(name) ; \
LT_LABELSUFFIX(name,_name_end): ; \
.align 2 ;
/* END generates Traceback tables */
#undef END
#define END(name) \
TRACEBACK(name) \
END_2(name)
/* This form supports more informative traceback tables */
#define END_GEN_TB(name,mask) \
TRACEBACK_MASK(name,mask) \
END_2(name)
#define DO_CALL(syscall) \
li 0,syscall; \
sc
/* ppc64 is always PIC */
#undef JUMPTARGET
#define JUMPTARGET(name) DOT_LABEL(name)
#define PSEUDO(name, syscall_name, args) \
.section ".text"; \
ENTRY (name) \
DO_CALL (SYS_ify (syscall_name));
#define PSEUDO_RET \
bnslr+; \
b JUMPTARGET(__syscall_error)
#define ret PSEUDO_RET
#undef PSEUDO_END
#define PSEUDO_END(name) \
END (name)
#define PSEUDO_NOERRNO(name, syscall_name, args) \
.section ".text"; \
ENTRY (name) \
DO_CALL (SYS_ify (syscall_name));
#define PSEUDO_RET_NOERRNO \
blr
#define ret_NOERRNO PSEUDO_RET_NOERRNO
#undef PSEUDO_END_NOERRNO
#define PSEUDO_END_NOERRNO(name) \
END (name)
#define PSEUDO_ERRVAL(name, syscall_name, args) \
.section ".text"; \
ENTRY (name) \
DO_CALL (SYS_ify (syscall_name));
#define PSEUDO_RET_ERRVAL \
blr
#define ret_ERRVAL PSEUDO_RET_ERRVAL
#undef PSEUDO_END_ERRVAL
#define PSEUDO_END_ERRVAL(name) \
END (name)
#else /* !__ASSEMBLER__ */
#ifdef USE_PPC64_OVERLAPPING_OPD
# define OPD_ENT(name) ".quad " BODY_PREFIX #name ", .TOC.@tocbase;"
#else
# define OPD_ENT(name) ".quad " BODY_PREFIX #name ", .TOC.@tocbase, 0;"
#endif
#ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define DOT_PREFIX "."
# define BODY_PREFIX "."
# define ENTRY_2(name) \
".globl " BODY_PREFIX #name ";\n" \
".size " #name ", 24;"
# define END_2(name) \
".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
#else
# define DOT_PREFIX ""
# define BODY_PREFIX ".LY"
# define ENTRY_2(name) ".type " #name ",@function;"
# define END_2(name) \
".size " #name ",.-" BODY_PREFIX #name ";\n" \
".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
#endif
#endif /* __ASSEMBLER__ */
#endif /* __ELF__ */
|
GitWeb