about summary refs log tree commit diff
path: root/elf/tls-macros.h
blob: 046a7d4c92e17a63e951245b2fc7df56ccf85420 (plain) (blame)
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
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
/* Macros to support TLS testing in times of missing compiler support.  */

#define COMMON_INT_DEF(x) \
  asm (".tls_common " #x ",4,4")
/* XXX Until we get compiler support we don't need declarations.  */
#define COMMON_INT_DECL(x)

/* XXX This definition will probably be machine specific, too.  */
#define VAR_INT_DEF(x) \
  asm (".section .tdata\n\t"						      \
       ".globl " #x "\n"						      \
       #x ":\t.long 0\n\t"						      \
       ".size " #x ",4\n\t"						      \
       ".previous")
/* XXX Until we get compiler support we don't need declarations.  */
#define VAR_INT_DECL(x)


  /* XXX Each architecture must have its own asm for now.  */
#ifdef __i386__
# define TLS_LE(x) \
  ({ int *__l;								      \
     asm ("movl %%gs:0,%0\n\t"						      \
	  "subl $" #x "@tpoff,%0"					      \
	  : "=r" (__l));						      \
     __l; })

# ifdef PIC
#  define TLS_IE(x) \
  ({ int *__l;								      \
     asm ("movl %%gs:0,%0\n\t"						      \
	  "subl " #x "@gottpoff(%%ebx),%0"				      \
	  : "=r" (__l));						      \
     __l; })
# else
#  define TLS_IE(x) \
  ({ int *__l, __b;							      \
     asm ("call 1f\n\t"							      \
	  ".subsection 1\n"						      \
	  "1:\tmovl (%%esp), %%ebx\n\t"					      \
	  "ret\n\t"							      \
	  ".previous\n\t"						      \
	  "addl $_GLOBAL_OFFSET_TABLE_, %%ebx\n\t"			      \
	  "movl %%gs:0,%0\n\t"						      \
	  "subl " #x "@gottpoff(%%ebx),%0"				      \
	  : "=r" (__l), "=&b" (__b));					      \
     __l; })
# endif

# ifdef PIC
#  define TLS_LD(x) \
  ({ int *__l, __c, __d;						      \
     asm ("leal " #x "@tlsldm(%%ebx),%%eax\n\t"				      \
	  "call ___tls_get_addr@plt\n\t"				      \
	  "leal " #x "@dtpoff(%%eax), %%eax"				      \
	  : "=a" (__l), "=&c" (__c), "=&d" (__d));			      \
     __l; })
# else
#  define TLS_LD(x) \
  ({ int *__l, __b, __c, __d;						      \
     asm ("call 1f\n\t"							      \
	  ".subsection 1\n"						      \
	  "1:\tmovl (%%esp), %%ebx\n\t"					      \
	  "ret\n\t"							      \
	  ".previous\n\t"						      \
	  "addl $_GLOBAL_OFFSET_TABLE_, %%ebx\n\t"			      \
	  "leal " #x "@tlsldm(%%ebx),%%eax\n\t"				      \
	  "call ___tls_get_addr@plt\n\t"				      \
	  "leal " #x "@dtpoff(%%eax), %%eax"				      \
	  : "=a" (__l), "=&b" (__b), "=&c" (__c), "=&d" (__d));		      \
     __l; })
# endif

# ifdef PIC
#  define TLS_GD(x) \
  ({ int *__l, __c, __d;						      \
     asm ("leal " #x "@tlsgd(%%ebx),%%eax\n\t"				      \
	  "call ___tls_get_addr@plt\n\t"				      \
	  "nop"								      \
	  : "=a" (__l), "=&c" (__c), "=&d" (__d));			      \
     __l; })
# else
#  define TLS_GD(x) \
  ({ int *__l, __b, __c, __d;						      \
     asm ("call 1f\n\t"							      \
	  ".subsection 1\n"						      \
	  "1:\tmovl (%%esp), %%ebx\n\t"					      \
	  "ret\n\t"							      \
	  ".previous\n\t"						      \
	  "addl $_GLOBAL_OFFSET_TABLE_, %%ebx\n\t"			      \
	  "leal " #x "@tlsgd(%%ebx),%%eax\n\t"				      \
	  "call ___tls_get_addr@plt\n\t"				      \
	  "nop"								      \
	  : "=a" (__l), "=&b" (__b), "=&c" (__c), "=&d" (__d));		      \
     __l; })
# endif

#elif defined __x86_64__

# define TLS_LE(x) \
  ({ int *__l;								      \
     asm ("movq %%fs:0,%0\n\t"						      \
	  "leaq " #x "@tpoff(%0), %0"					      \
	  : "=r" (__l));						      \
     __l; })

# define TLS_IE(x) \
  ({ int *__l;								      \
     asm ("movq %%fs:0,%0\n\t"						      \
	  "addq " #x "@gottpoff(%%rip),%0"				      \
	  : "=r" (__l));						      \
     __l; })

# define TLS_LD(x) \
  ({ int *__l, __c, __d;						      \
     asm ("leaq " #x "@tlsld(%%rip),%%rdi\n\t"				      \
	  "call __tls_get_addr@plt\n\t"					      \
	  "leaq " #x "@dtpoff(%%rax), %%rax"				      \
	  : "=a" (__l), "=&c" (__c), "=&d" (__d)			      \
	  : : "rdi", "rsi", "r8", "r9", "r10", "r11"); 			      \
     __l; })

# define TLS_GD(x) \
  ({ int *__l, __c, __d;						      \
     asm (".byte 0x66\n\t"						      \
	  "leaq " #x "@tlsgd(%%rip),%%rdi\n\t"				      \
	  ".word 0x6666\n\t"						      \
	  "rex64\n\t"							      \
	  "call __tls_get_addr@plt"					      \
	  : "=a" (__l), "=&c" (__c), "=&d" (__d)			      \
	  : : "rdi", "rsi", "r8", "r9", "r10", "r11"); 			      \
     __l; })

#elif defined __sh__

# define TLS_LE(x) \
  ({ int *__l; void *__tp;						      \
     asm ("stc gbr,%1\n\t"						      \
	  "mov.l 1f,%0\n\t"						      \
	  "bra 2f\n\t"							      \
	  " add %1,%0\n\t"						      \
	  ".align 2\n\t"						      \
	  "1: .long " #x "@tpoff\n\t"					      \
	  "2:"								      \
	  : "=r" (__l), "=r" (__tp));					      \
     __l; })

# define TLS_IE(x) \
  ({ int *__l; void *__tp;						      \
     asm ("mova 0f,r0\n\t"						      \
	  "mov.l 0f,r12\n\t"						      \
	  "add r0,r12\n\t"						      \
	  "mov.l 1f,r0\n\t"						      \
	  "stc gbr,%1\n\t"						      \
	  "mov.l @(r0,r12),%0\n\t"					      \
	  "bra 2f\n\t"							      \
	  " add %1,%0\n\t"						      \
	  ".align 2\n\t"						      \
	  "1: .long " #x "@gottpoff\n\t"				      \
	  "0: .long _GLOBAL_OFFSET_TABLE_\n\t"				      \
	  "2:"								      \
	  : "=r" (__l), "=r" (__tp) : : "r0", "r12");			      \
     __l; })

# define TLS_LD(x) \
  ({ int *__l;								      \
     asm ("mova 0f,r0\n\t"						      \
	  "mov.l 0f,r12\n\t"						      \
	  "add r0,r12\n\t"						      \
	  "mov.l 1f,r4\n\t"						      \
	  "mova 2f,r0\n\t"						      \
	  "mov.l 2f,r1\n\t"						      \
	  "add r0,r1\n\t"						      \
	  "jsr @r1\n\t"							      \
	  " add r12,r4\n\t"						      \
	  "bra 4f\n\t"							      \
	  " nop\n\t"							      \
	  ".align 2\n\t"						      \
	  "1: .long " #x "@tlsldm\n\t"					      \
	  "2: .long __tls_get_addr@plt\n\t"				      \
	  "0: .long _GLOBAL_OFFSET_TABLE_\n\t"				      \
	  "4: mov.l 3f,%0\n\t"						      \
	  "bra 5f\n\t"							      \
	  " add r0,%0\n\t"						      \
	  ".align 2\n\t"						      \
	  "3: .long " #x "@dtpoff\n\t"					      \
	  "5:"								      \
	  : "=r" (__l) : : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",    \
			   "r12", "pr", "t");				      \
     __l; })

# define TLS_GD(x) \
  ({ int *__l;								      \
     asm ("mova 0f,r0\n\t"						      \
	  "mov.l 0f,r12\n\t"						      \
	  "add r0,r12\n\t"						      \
	  "mov.l 1f,r4\n\t"						      \
	  "mova 2f,r0\n\t"						      \
	  "mov.l 2f,r1\n\t"						      \
	  "add r0,r1\n\t"						      \
	  "jsr @r1\n\t"							      \
	  " add r12,r4\n\t"						      \
	  "bra 3f\n\t"							      \
	  " mov r0,%0\n\t"						      \
	  ".align 2\n\t"						      \
	  "1: .long " #x "@tlsgd\n\t"					      \
	  "2: .long __tls_get_addr@plt\n\t"				      \
	  "0: .long _GLOBAL_OFFSET_TABLE_\n\t"				      \
	  "3:"								      \
	  : "=r" (__l) : : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",    \
			   "r12", "pr", "t");				      \
     __l; })

#elif defined __alpha__

register void *__gp __asm__("$29");

# define TLS_LE(x) \
  ({ int *__l;								      \
     asm ("call_pal 158\n\tlda $0," #x "($0)\t\t!tprel" : "=v"(__l));	      \
     __l; })

# define TLS_IE(x) \
  ({ char *__tp; unsigned long __o;					      \
     asm ("call_pal 158\n\tldq %1," #x "($gp)\t\t!gottprel"		      \
	  : "=v"(__tp), "=r"(__o) : "r"(__gp));				      \
     (int *)(__tp + __o); })

# define TLS_LD(x) \
  ({ extern void *__tls_get_addr(void *); int *__l; void *__i;		      \
     asm ("lda %0," #x "($gp)\t\t!tlsldm" : "=r" (__i) : "r"(__gp));	      \
     __i = __tls_get_addr(__i);						      \
     asm ("lda %0, " #x "(%1)\t\t!dtprel" : "=r"(__l) : "r"(__i));	      \
     __l; })

# define TLS_GD(x) \
  ({ extern void *__tls_get_addr(void *); void *__i;			      \
     asm ("lda %0," #x "($gp)\t\t!tlsgd" : "=r" (__i) : "r"(__gp));	      \
     (int *) __tls_get_addr(__i); })


#elif defined __ia64__

# define TLS_LE(x) \
  ({ void *__l;								      \
     asm ("mov r2=r13\n\t"						      \
         ";;\n\t"							      \
         "addl %0=@tprel(" #x "),r2\n\t"				      \
         : "=r" (__l) : : "r2"  ); __l; })

# define TLS_IE(x) \
  ({ void *__l;								      \
     asm (";;\n\t"							      \
	 "addl r16=@ltoff(@tprel(" #x ")),gp\n\t"			      \
         ";;\n\t"							      \
         "ld8 r17=[r16]\n\t"						      \
         ";;\n\t"							      \
         "add %0=r13,r17\n\t"						      \
         : "=r" (__l) : : "r16", "r17" ); __l; })

# define __TLS_CALL_CLOBBERS \
  "r2", "r3", "r8", "r9", "r10", "r11", "r14", "r15", "r16", "r17",	      \
  "r18", "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26",	      \
  "r27", "r28", "r29", "r30", "r31",					      \
  "p6", "p7", "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15",	      \
  "f6", "f7", "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",	      \
  "b6", "b7",								      \
  "out0", "out1", "out2", "out3", "out4", "out5", "out6", "out7"

# define TLS_LD(x) \
  ({ void *__l;								      \
     asm (";;\n\t"							      \
	 "mov loc0=gp\n\t"						      \
         "addl r16=@ltoff(@dtpmod(" #x ")),gp\n\t"			      \
         "addl out1=@dtprel(" #x "),r0\n\t"				      \
         ";;\n\t"							      \
         "ld8 out0=[r16]\n\t"						      \
         "br.call.sptk.many b0=__tls_get_addr"				      \
         ";;\n\t"							      \
         "mov gp=loc0\n\t"						      \
         "mov %0=r8\n\t"						      \
         : "=r" (__l) : : "loc0", __TLS_CALL_CLOBBERS);			      \
     __l; })

# define TLS_GD(x) \
  ({ void *__l;								      \
     asm (";;\n\t"							      \
	 "mov loc0=gp\n\t"						      \
         "addl r16=@ltoff(@dtpmod(" #x ")),gp\n\t"			      \
         "addl r17=@ltoff(@dtprel(" #x ")),gp\n\t"			      \
         ";;\n\t"							      \
         "ld8 out0=[r16]\n\t"						      \
         "ld8 out1=[r17]\n\t"						      \
         "br.call.sptk.many b0=__tls_get_addr"				      \
         ";;\n\t"							      \
         "mov gp=loc0\n\t"						      \
         "mov %0=r8\n\t"						      \
          : "=r" (__l) : : "loc0", __TLS_CALL_CLOBBERS);		      \
     __l; })

#else
# error "No support for this architecture so far."
#endif