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gerrit-public.fairphone.software / platform / external / compiler-rt / dec793732650d7d4d5f66511ec59f04a451315fa / . / lib / tsan / rtl / tsan_rtl_amd64.S
blob: 8db62f9013a3d7ff39e8cfc86ea5d82c42892eda [file] [log] [blame]
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]1#include "sanitizer_common/sanitizer_asm.h"
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]2.section .text
3
Dmitry Vyukovf5d526f2012-11-26 14:20:26 +0000[diff] [blame]4.hidden __tsan_trace_switch
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]5.globl __tsan_trace_switch_thunk
6__tsan_trace_switch_thunk:
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]7 CFI_STARTPROC
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]8 # Save scratch registers.
9 push %rax
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]10 CFI_ADJUST_CFA_OFFSET(8)
11 CFI_REL_OFFSET(%rax, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]12 push %rcx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]13 CFI_ADJUST_CFA_OFFSET(8)
14 CFI_REL_OFFSET(%rcx, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]15 push %rdx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]16 CFI_ADJUST_CFA_OFFSET(8)
17 CFI_REL_OFFSET(%rdx, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]18 push %rsi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]19 CFI_ADJUST_CFA_OFFSET(8)
20 CFI_REL_OFFSET(%rsi, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]21 push %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]22 CFI_ADJUST_CFA_OFFSET(8)
23 CFI_REL_OFFSET(%rdi, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]24 push %r8
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]25 CFI_ADJUST_CFA_OFFSET(8)
26 CFI_REL_OFFSET(%r8, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]27 push %r9
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]28 CFI_ADJUST_CFA_OFFSET(8)
29 CFI_REL_OFFSET(%r9, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]30 push %r10
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]31 CFI_ADJUST_CFA_OFFSET(8)
32 CFI_REL_OFFSET(%r10, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]33 push %r11
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]34 CFI_ADJUST_CFA_OFFSET(8)
35 CFI_REL_OFFSET(%r11, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]36 # Align stack frame.
37 push %rbx # non-scratch
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]38 CFI_ADJUST_CFA_OFFSET(8)
39 CFI_REL_OFFSET(%rbx, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]40 mov %rsp, %rbx # save current rsp
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]41 CFI_DEF_CFA_REGISTER(%rbx)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]42 shr $4, %rsp # clear 4 lsb, align to 16
43 shl $4, %rsp
44
45 call __tsan_trace_switch
46
47 # Unalign stack frame back.
48 mov %rbx, %rsp # restore the original rsp
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]49 CFI_DEF_CFA_REGISTER(%rsp)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]50 pop %rbx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]51 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]52 # Restore scratch registers.
53 pop %r11
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]54 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]55 pop %r10
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]56 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]57 pop %r9
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]58 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]59 pop %r8
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]60 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]61 pop %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]62 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]63 pop %rsi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]64 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]65 pop %rdx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]66 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]67 pop %rcx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]68 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]69 pop %rax
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]70 CFI_ADJUST_CFA_OFFSET(-8)
71 CFI_RESTORE(%rax)
72 CFI_RESTORE(%rbx)
73 CFI_RESTORE(%rcx)
74 CFI_RESTORE(%rdx)
75 CFI_RESTORE(%rsi)
76 CFI_RESTORE(%rdi)
77 CFI_RESTORE(%r8)
78 CFI_RESTORE(%r9)
79 CFI_RESTORE(%r10)
80 CFI_RESTORE(%r11)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]81 ret
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]82 CFI_ENDPROC
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]83
Dmitry Vyukovf5d526f2012-11-26 14:20:26 +0000[diff] [blame]84.hidden __tsan_report_race
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]85.globl __tsan_report_race_thunk
86__tsan_report_race_thunk:
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]87 CFI_STARTPROC
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]88 # Save scratch registers.
89 push %rax
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]90 CFI_ADJUST_CFA_OFFSET(8)
91 CFI_REL_OFFSET(%rax, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]92 push %rcx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]93 CFI_ADJUST_CFA_OFFSET(8)
94 CFI_REL_OFFSET(%rcx, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]95 push %rdx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]96 CFI_ADJUST_CFA_OFFSET(8)
97 CFI_REL_OFFSET(%rdx, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]98 push %rsi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]99 CFI_ADJUST_CFA_OFFSET(8)
100 CFI_REL_OFFSET(%rsi, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]101 push %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]102 CFI_ADJUST_CFA_OFFSET(8)
103 CFI_REL_OFFSET(%rdi, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]104 push %r8
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]105 CFI_ADJUST_CFA_OFFSET(8)
106 CFI_REL_OFFSET(%r8, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]107 push %r9
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]108 CFI_ADJUST_CFA_OFFSET(8)
109 CFI_REL_OFFSET(%r9, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]110 push %r10
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]111 CFI_ADJUST_CFA_OFFSET(8)
112 CFI_REL_OFFSET(%r10, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]113 push %r11
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]114 CFI_ADJUST_CFA_OFFSET(8)
115 CFI_REL_OFFSET(%r11, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]116 # Align stack frame.
117 push %rbx # non-scratch
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]118 CFI_ADJUST_CFA_OFFSET(8)
119 CFI_REL_OFFSET(%rbx, 0)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]120 mov %rsp, %rbx # save current rsp
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]121 CFI_DEF_CFA_REGISTER(%rbx)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]122 shr $4, %rsp # clear 4 lsb, align to 16
123 shl $4, %rsp
124
125 call __tsan_report_race
126
127 # Unalign stack frame back.
128 mov %rbx, %rsp # restore the original rsp
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]129 CFI_DEF_CFA_REGISTER(%rsp)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]130 pop %rbx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]131 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]132 # Restore scratch registers.
133 pop %r11
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]134 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]135 pop %r10
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]136 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]137 pop %r9
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]138 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]139 pop %r8
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]140 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]141 pop %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]142 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]143 pop %rsi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]144 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]145 pop %rdx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]146 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]147 pop %rcx
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]148 CFI_ADJUST_CFA_OFFSET(-8)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]149 pop %rax
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]150 CFI_ADJUST_CFA_OFFSET(-8)
151 CFI_RESTORE(%rax)
152 CFI_RESTORE(%rbx)
153 CFI_RESTORE(%rcx)
154 CFI_RESTORE(%rdx)
155 CFI_RESTORE(%rsi)
156 CFI_RESTORE(%rdi)
157 CFI_RESTORE(%r8)
158 CFI_RESTORE(%r9)
159 CFI_RESTORE(%r10)
160 CFI_RESTORE(%r11)
Kostya Serebryany7ac41482012-05-10 13:48:04 +0000[diff] [blame]161 ret
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]162 CFI_ENDPROC
Dmitry Vyukova911c6f2012-08-17 18:05:28 +0000[diff] [blame]163
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]164.hidden __tsan_setjmp
165.comm _ZN14__interception11real_setjmpE,8,8
166.globl setjmp
167.type setjmp, @function
168setjmp:
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]169 CFI_STARTPROC
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]170 // save env parameter
171 push %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]172 CFI_ADJUST_CFA_OFFSET(8)
173 CFI_REL_OFFSET(%rdi, 0)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]174 // obtain %rsp
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]175#if defined(__FreeBSD__)
176 lea 8(%rsp), %rdi
177 mov %rdi, %rsi
178#else
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]179 lea 16(%rsp), %rdi
180 mov %rdi, %rsi
181 xor %fs:0x30, %rsi // magic mangling of rsp (see libc setjmp)
182 rol $0x11, %rsi
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]183#endif
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]184 // call tsan interceptor
185 call __tsan_setjmp
186 // restore env parameter
187 pop %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]188 CFI_ADJUST_CFA_OFFSET(-8)
189 CFI_RESTORE(%rdi)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]190 // tail jump to libc setjmp
191 movl $0, %eax
192 movq _ZN14__interception11real_setjmpE@GOTPCREL(%rip), %rdx
193 jmp *(%rdx)
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]194 CFI_ENDPROC
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]195.size setjmp, .-setjmp
196
197.comm _ZN14__interception12real__setjmpE,8,8
198.globl _setjmp
199.type _setjmp, @function
200_setjmp:
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]201 CFI_STARTPROC
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]202 // save env parameter
203 push %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]204 CFI_ADJUST_CFA_OFFSET(8)
205 CFI_REL_OFFSET(%rdi, 0)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]206 // obtain %rsp
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]207#if defined(__FreeBSD__)
208 lea 8(%rsp), %rdi
209 mov %rdi, %rsi
210#else
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]211 lea 16(%rsp), %rdi
212 mov %rdi, %rsi
213 xor %fs:0x30, %rsi // magic mangling of rsp (see libc setjmp)
214 rol $0x11, %rsi
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]215#endif
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]216 // call tsan interceptor
217 call __tsan_setjmp
218 // restore env parameter
219 pop %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]220 CFI_ADJUST_CFA_OFFSET(-8)
221 CFI_RESTORE(%rdi)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]222 // tail jump to libc setjmp
223 movl $0, %eax
224 movq _ZN14__interception12real__setjmpE@GOTPCREL(%rip), %rdx
225 jmp *(%rdx)
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]226 CFI_ENDPROC
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]227.size _setjmp, .-_setjmp
228
229.comm _ZN14__interception14real_sigsetjmpE,8,8
230.globl sigsetjmp
231.type sigsetjmp, @function
232sigsetjmp:
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]233 CFI_STARTPROC
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]234 // save env parameter
235 push %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]236 CFI_ADJUST_CFA_OFFSET(8)
237 CFI_REL_OFFSET(%rdi, 0)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]238 // save savesigs parameter
239 push %rsi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]240 CFI_ADJUST_CFA_OFFSET(8)
241 CFI_REL_OFFSET(%rsi, 0)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]242 // align stack frame
243 sub $8, %rsp
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]244 CFI_ADJUST_CFA_OFFSET(8)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]245 // obtain %rsp
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]246#if defined(__FreeBSD__)
247 lea 24(%rsp), %rdi
248 mov %rdi, %rsi
249#else
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]250 lea 32(%rsp), %rdi
251 mov %rdi, %rsi
252 xor %fs:0x30, %rsi // magic mangling of rsp (see libc setjmp)
253 rol $0x11, %rsi
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]254#endif
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]255 // call tsan interceptor
256 call __tsan_setjmp
257 // unalign stack frame
258 add $8, %rsp
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]259 CFI_ADJUST_CFA_OFFSET(-8)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]260 // restore savesigs parameter
261 pop %rsi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]262 CFI_ADJUST_CFA_OFFSET(-8)
263 CFI_RESTORE(%rsi)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]264 // restore env parameter
265 pop %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]266 CFI_ADJUST_CFA_OFFSET(-8)
267 CFI_RESTORE(%rdi)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]268 // tail jump to libc sigsetjmp
269 movl $0, %eax
270 movq _ZN14__interception14real_sigsetjmpE@GOTPCREL(%rip), %rdx
271 jmp *(%rdx)
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]272 CFI_ENDPROC
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]273.size sigsetjmp, .-sigsetjmp
274
275.comm _ZN14__interception16real___sigsetjmpE,8,8
276.globl __sigsetjmp
277.type __sigsetjmp, @function
278__sigsetjmp:
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]279 CFI_STARTPROC
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]280 // save env parameter
281 push %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]282 CFI_ADJUST_CFA_OFFSET(8)
283 CFI_REL_OFFSET(%rdi, 0)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]284 // save savesigs parameter
285 push %rsi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]286 CFI_ADJUST_CFA_OFFSET(8)
287 CFI_REL_OFFSET(%rsi, 0)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]288 // align stack frame
289 sub $8, %rsp
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]290 CFI_ADJUST_CFA_OFFSET(8)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]291 // obtain %rsp
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]292#if defined(__FreeBSD__)
293 lea 24(%rsp), %rdi
294 mov %rdi, %rsi
295#else
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]296 lea 32(%rsp), %rdi
297 mov %rdi, %rsi
298 xor %fs:0x30, %rsi // magic mangling of rsp (see libc setjmp)
299 rol $0x11, %rsi
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]300#endif
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]301 // call tsan interceptor
302 call __tsan_setjmp
303 // unalign stack frame
304 add $8, %rsp
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]305 CFI_ADJUST_CFA_OFFSET(-8)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]306 // restore savesigs parameter
307 pop %rsi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]308 CFI_ADJUST_CFA_OFFSET(-8)
309 CFI_RESTORE(%rsi)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]310 // restore env parameter
311 pop %rdi
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]312 CFI_ADJUST_CFA_OFFSET(-8)
313 CFI_RESTORE(%rdi)
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]314 // tail jump to libc sigsetjmp
315 movl $0, %eax
316 movq _ZN14__interception16real___sigsetjmpE@GOTPCREL(%rip), %rdx
317 jmp *(%rdx)
Stephen Hines2d1fdb22014-05-28 23:58:16 -0700[diff] [blame]318 CFI_ENDPROC
Dmitry Vyukov8b30c252013-03-25 10:10:44 +0000[diff] [blame]319.size __sigsetjmp, .-__sigsetjmp
320
Stephen Hines6d186232014-11-26 17:56:19 -0800[diff] [blame]321#if defined(__FreeBSD__) || defined(__linux__)
Dmitry Vyukova911c6f2012-08-17 18:05:28 +0000[diff] [blame]322/* We do not need executable stack. */
323.section .note.GNU-stack,"",@progbits
324#endif