gcc/libsanitizer/tsan/tsan_rtl_amd64.S

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#include "sanitizer_common/sanitizer_asm.h"
#if !defined(__APPLE__)
.section .text
#else
.section __TEXT,__text
#endif
ASM_HIDDEN(__tsan_trace_switch)
.globl ASM_TSAN_SYMBOL(__tsan_trace_switch_thunk)
ASM_TSAN_SYMBOL(__tsan_trace_switch_thunk):
CFI_STARTPROC
# Save scratch registers.
push %rax
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rax, 0)
push %rcx
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rcx, 0)
push %rdx
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rdx, 0)
push %rsi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rsi, 0)
push %rdi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rdi, 0)
push %r8
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%r8, 0)
push %r9
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%r9, 0)
push %r10
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%r10, 0)
push %r11
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%r11, 0)
# Align stack frame.
push %rbx # non-scratch
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rbx, 0)
mov %rsp, %rbx # save current rsp
CFI_DEF_CFA_REGISTER(%rbx)
shr $4, %rsp # clear 4 lsb, align to 16
shl $4, %rsp
call ASM_TSAN_SYMBOL(__tsan_trace_switch)
# Unalign stack frame back.
mov %rbx, %rsp # restore the original rsp
CFI_DEF_CFA_REGISTER(%rsp)
pop %rbx
CFI_ADJUST_CFA_OFFSET(-8)
# Restore scratch registers.
pop %r11
CFI_ADJUST_CFA_OFFSET(-8)
pop %r10
CFI_ADJUST_CFA_OFFSET(-8)
pop %r9
CFI_ADJUST_CFA_OFFSET(-8)
pop %r8
CFI_ADJUST_CFA_OFFSET(-8)
pop %rdi
CFI_ADJUST_CFA_OFFSET(-8)
pop %rsi
CFI_ADJUST_CFA_OFFSET(-8)
pop %rdx
CFI_ADJUST_CFA_OFFSET(-8)
pop %rcx
CFI_ADJUST_CFA_OFFSET(-8)
pop %rax
CFI_ADJUST_CFA_OFFSET(-8)
CFI_RESTORE(%rax)
CFI_RESTORE(%rbx)
CFI_RESTORE(%rcx)
CFI_RESTORE(%rdx)
CFI_RESTORE(%rsi)
CFI_RESTORE(%rdi)
CFI_RESTORE(%r8)
CFI_RESTORE(%r9)
CFI_RESTORE(%r10)
CFI_RESTORE(%r11)
ret
CFI_ENDPROC
ASM_HIDDEN(__tsan_report_race)
.globl ASM_TSAN_SYMBOL(__tsan_report_race_thunk)
ASM_TSAN_SYMBOL(__tsan_report_race_thunk):
CFI_STARTPROC
# Save scratch registers.
push %rax
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rax, 0)
push %rcx
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rcx, 0)
push %rdx
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rdx, 0)
push %rsi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rsi, 0)
push %rdi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rdi, 0)
push %r8
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%r8, 0)
push %r9
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%r9, 0)
push %r10
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%r10, 0)
push %r11
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%r11, 0)
# Align stack frame.
push %rbx # non-scratch
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rbx, 0)
mov %rsp, %rbx # save current rsp
CFI_DEF_CFA_REGISTER(%rbx)
shr $4, %rsp # clear 4 lsb, align to 16
shl $4, %rsp
call ASM_TSAN_SYMBOL(__tsan_report_race)
# Unalign stack frame back.
mov %rbx, %rsp # restore the original rsp
CFI_DEF_CFA_REGISTER(%rsp)
pop %rbx
CFI_ADJUST_CFA_OFFSET(-8)
# Restore scratch registers.
pop %r11
CFI_ADJUST_CFA_OFFSET(-8)
pop %r10
CFI_ADJUST_CFA_OFFSET(-8)
pop %r9
CFI_ADJUST_CFA_OFFSET(-8)
pop %r8
CFI_ADJUST_CFA_OFFSET(-8)
pop %rdi
CFI_ADJUST_CFA_OFFSET(-8)
pop %rsi
CFI_ADJUST_CFA_OFFSET(-8)
pop %rdx
CFI_ADJUST_CFA_OFFSET(-8)
pop %rcx
CFI_ADJUST_CFA_OFFSET(-8)
pop %rax
CFI_ADJUST_CFA_OFFSET(-8)
CFI_RESTORE(%rax)
CFI_RESTORE(%rbx)
CFI_RESTORE(%rcx)
CFI_RESTORE(%rdx)
CFI_RESTORE(%rsi)
CFI_RESTORE(%rdi)
CFI_RESTORE(%r8)
CFI_RESTORE(%r9)
CFI_RESTORE(%r10)
CFI_RESTORE(%r11)
ret
CFI_ENDPROC
ASM_HIDDEN(__tsan_setjmp)
#if !defined(__APPLE__)
.comm _ZN14__interception11real_setjmpE,8,8
#endif
.globl ASM_TSAN_SYMBOL_INTERCEPTOR(setjmp)
ASM_TYPE_FUNCTION(ASM_TSAN_SYMBOL_INTERCEPTOR(setjmp))
ASM_TSAN_SYMBOL_INTERCEPTOR(setjmp):
CFI_STARTPROC
// save env parameter
push %rdi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rdi, 0)
// obtain %rsp
#if defined(__FreeBSD__)
lea 8(%rsp), %rdi
mov %rdi, %rsi
#elif defined(__APPLE__)
lea 16(%rsp), %rdi
mov %rdi, %rsi
#elif defined(__linux__)
lea 16(%rsp), %rdi
mov %rdi, %rsi
xor %fs:0x30, %rsi // magic mangling of rsp (see libc setjmp)
rol $0x11, %rsi
#else
# error "Unknown platform"
#endif
// call tsan interceptor
call ASM_TSAN_SYMBOL(__tsan_setjmp)
// restore env parameter
pop %rdi
CFI_ADJUST_CFA_OFFSET(-8)
CFI_RESTORE(%rdi)
// tail jump to libc setjmp
movl $0, %eax
#if !defined(__APPLE__)
movq _ZN14__interception11real_setjmpE@GOTPCREL(%rip), %rdx
jmp *(%rdx)
#else
jmp ASM_TSAN_SYMBOL(setjmp)
#endif
CFI_ENDPROC
ASM_SIZE(ASM_TSAN_SYMBOL_INTERCEPTOR(setjmp))
.comm _ZN14__interception12real__setjmpE,8,8
.globl ASM_TSAN_SYMBOL_INTERCEPTOR(_setjmp)
ASM_TYPE_FUNCTION(ASM_TSAN_SYMBOL_INTERCEPTOR(_setjmp))
ASM_TSAN_SYMBOL_INTERCEPTOR(_setjmp):
CFI_STARTPROC
// save env parameter
push %rdi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rdi, 0)
// obtain %rsp
#if defined(__FreeBSD__)
lea 8(%rsp), %rdi
mov %rdi, %rsi
#elif defined(__APPLE__)
lea 16(%rsp), %rdi
mov %rdi, %rsi
#elif defined(__linux__)
lea 16(%rsp), %rdi
mov %rdi, %rsi
xor %fs:0x30, %rsi // magic mangling of rsp (see libc setjmp)
rol $0x11, %rsi
#else
# error "Unknown platform"
#endif
// call tsan interceptor
call ASM_TSAN_SYMBOL(__tsan_setjmp)
// restore env parameter
pop %rdi
CFI_ADJUST_CFA_OFFSET(-8)
CFI_RESTORE(%rdi)
// tail jump to libc setjmp
movl $0, %eax
#if !defined(__APPLE__)
movq _ZN14__interception12real__setjmpE@GOTPCREL(%rip), %rdx
jmp *(%rdx)
#else
jmp ASM_TSAN_SYMBOL(_setjmp)
#endif
CFI_ENDPROC
ASM_SIZE(ASM_TSAN_SYMBOL_INTERCEPTOR(_setjmp))
.comm _ZN14__interception14real_sigsetjmpE,8,8
.globl ASM_TSAN_SYMBOL_INTERCEPTOR(sigsetjmp)
ASM_TYPE_FUNCTION(ASM_TSAN_SYMBOL_INTERCEPTOR(sigsetjmp))
ASM_TSAN_SYMBOL_INTERCEPTOR(sigsetjmp):
CFI_STARTPROC
// save env parameter
push %rdi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rdi, 0)
// save savesigs parameter
push %rsi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rsi, 0)
// align stack frame
sub $8, %rsp
CFI_ADJUST_CFA_OFFSET(8)
// obtain %rsp
#if defined(__FreeBSD__)
lea 24(%rsp), %rdi
mov %rdi, %rsi
#elif defined(__APPLE__)
lea 32(%rsp), %rdi
mov %rdi, %rsi
#elif defined(__linux__)
lea 32(%rsp), %rdi
mov %rdi, %rsi
xor %fs:0x30, %rsi // magic mangling of rsp (see libc setjmp)
rol $0x11, %rsi
#else
# error "Unknown platform"
#endif
// call tsan interceptor
call ASM_TSAN_SYMBOL(__tsan_setjmp)
// unalign stack frame
add $8, %rsp
CFI_ADJUST_CFA_OFFSET(-8)
// restore savesigs parameter
pop %rsi
CFI_ADJUST_CFA_OFFSET(-8)
CFI_RESTORE(%rsi)
// restore env parameter
pop %rdi
CFI_ADJUST_CFA_OFFSET(-8)
CFI_RESTORE(%rdi)
// tail jump to libc sigsetjmp
movl $0, %eax
#if !defined(__APPLE__)
movq _ZN14__interception14real_sigsetjmpE@GOTPCREL(%rip), %rdx
jmp *(%rdx)
#else
jmp ASM_TSAN_SYMBOL(sigsetjmp)
#endif
CFI_ENDPROC
ASM_SIZE(ASM_TSAN_SYMBOL_INTERCEPTOR(sigsetjmp))
#if !defined(__APPLE__)
.comm _ZN14__interception16real___sigsetjmpE,8,8
.globl ASM_TSAN_SYMBOL_INTERCEPTOR(__sigsetjmp)
ASM_TYPE_FUNCTION(ASM_TSAN_SYMBOL_INTERCEPTOR(__sigsetjmp))
ASM_TSAN_SYMBOL_INTERCEPTOR(__sigsetjmp):
CFI_STARTPROC
// save env parameter
push %rdi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rdi, 0)
// save savesigs parameter
push %rsi
CFI_ADJUST_CFA_OFFSET(8)
CFI_REL_OFFSET(%rsi, 0)
// align stack frame
sub $8, %rsp
CFI_ADJUST_CFA_OFFSET(8)
// obtain %rsp
#if defined(__FreeBSD__)
lea 24(%rsp), %rdi
mov %rdi, %rsi
#else
lea 32(%rsp), %rdi
mov %rdi, %rsi
xor %fs:0x30, %rsi // magic mangling of rsp (see libc setjmp)
rol $0x11, %rsi
#endif
// call tsan interceptor
call ASM_TSAN_SYMBOL(__tsan_setjmp)
// unalign stack frame
add $8, %rsp
CFI_ADJUST_CFA_OFFSET(-8)
// restore savesigs parameter
pop %rsi
CFI_ADJUST_CFA_OFFSET(-8)
CFI_RESTORE(%rsi)
// restore env parameter
pop %rdi
CFI_ADJUST_CFA_OFFSET(-8)
CFI_RESTORE(%rdi)
// tail jump to libc sigsetjmp
movl $0, %eax
movq _ZN14__interception16real___sigsetjmpE@GOTPCREL(%rip), %rdx
jmp *(%rdx)
CFI_ENDPROC
ASM_SIZE(ASM_TSAN_SYMBOL_INTERCEPTOR(__sigsetjmp))
#endif // !defined(__APPLE__)
#if defined(__FreeBSD__) || defined(__linux__)
/* We do not need executable stack. */
.section .note.GNU-stack,"",@progbits
#endif