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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S
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// The content of this file is x86_64-only:

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#if defined(__x86_64__)

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#include "sanitizer_common/sanitizer_asm.h"

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#if !defined(__APPLE__)

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.section .text

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#else

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.section __TEXT,__text

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#endif

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ASM_HIDDEN(__tsan_setjmp)

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#if defined(__NetBSD__)

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.comm _ZN14__interception15real___setjmp14E,8,8

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#elif !defined(__APPLE__)

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.comm _ZN14__interception11real_setjmpE,8,8

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#endif

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#if defined(__NetBSD__)

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.globl ASM_SYMBOL_INTERCEPTOR(__setjmp14)

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ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(__setjmp14))

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ASM_SYMBOL_INTERCEPTOR(__setjmp14):

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#else

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.globl ASM_SYMBOL_INTERCEPTOR(setjmp)

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ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(setjmp))

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ASM_SYMBOL_INTERCEPTOR(setjmp):

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#endif

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  CFI_STARTPROC

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  _CET_ENDBR

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  // save env parameter

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  push %rdi

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  CFI_ADJUST_CFA_OFFSET(8)

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  CFI_REL_OFFSET(%rdi, 0)

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  // obtain SP, store in %rdi, first argument to `void __tsan_setjmp(uptr sp)`

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#if defined(__FreeBSD__) || defined(__NetBSD__)

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  lea 8(%rsp), %rdi

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#elif defined(__linux__) || defined(__APPLE__)

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  lea 16(%rsp), %rdi

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#else

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# error "Unknown platform"

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#endif

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  // call tsan interceptor

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  call ASM_SYMBOL(__tsan_setjmp)

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  // restore env parameter

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  pop %rdi

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  CFI_ADJUST_CFA_OFFSET(-8)

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  CFI_RESTORE(%rdi)

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  // tail jump to libc setjmp

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  movl $0, %eax

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#if defined(__NetBSD__)

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  movq _ZN14__interception15real___setjmp14E@GOTPCREL(%rip), %rdx

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  jmp *(%rdx)

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#elif !defined(__APPLE__)

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  movq _ZN14__interception11real_setjmpE@GOTPCREL(%rip), %rdx

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  jmp *(%rdx)

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#else

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  jmp ASM_SYMBOL(setjmp)

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#endif

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  CFI_ENDPROC

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#if defined(__NetBSD__)

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ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(__setjmp14))

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#else

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ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(setjmp))

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#endif

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.comm _ZN14__interception12real__setjmpE,8,8

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.globl ASM_SYMBOL_INTERCEPTOR(_setjmp)

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ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(_setjmp))

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ASM_SYMBOL_INTERCEPTOR(_setjmp):

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  CFI_STARTPROC

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  _CET_ENDBR

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  // save env parameter

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  push %rdi

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  CFI_ADJUST_CFA_OFFSET(8)

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  CFI_REL_OFFSET(%rdi, 0)

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  // obtain SP, store in %rdi, first argument to `void __tsan_setjmp(uptr sp)`

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#if defined(__FreeBSD__) || defined(__NetBSD__)

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  lea 8(%rsp), %rdi

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#elif defined(__linux__) || defined(__APPLE__)

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  lea 16(%rsp), %rdi

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#else

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# error "Unknown platform"

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#endif

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  // call tsan interceptor

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  call ASM_SYMBOL(__tsan_setjmp)

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  // restore env parameter

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  pop %rdi

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  CFI_ADJUST_CFA_OFFSET(-8)

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  CFI_RESTORE(%rdi)

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  // tail jump to libc setjmp

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  movl $0, %eax

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#if !defined(__APPLE__)

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  movq _ZN14__interception12real__setjmpE@GOTPCREL(%rip), %rdx

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  jmp *(%rdx)

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#else

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  jmp ASM_SYMBOL(_setjmp)

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#endif

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  CFI_ENDPROC

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ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(_setjmp))

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#if defined(__NetBSD__)

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.comm _ZN14__interception18real___sigsetjmp14E,8,8

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.globl ASM_SYMBOL_INTERCEPTOR(__sigsetjmp14)

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ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp14))

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ASM_SYMBOL_INTERCEPTOR(__sigsetjmp14):

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#else

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.comm _ZN14__interception14real_sigsetjmpE,8,8

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.globl ASM_SYMBOL_INTERCEPTOR(sigsetjmp)

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ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(sigsetjmp))

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ASM_SYMBOL_INTERCEPTOR(sigsetjmp):

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#endif

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  CFI_STARTPROC

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  _CET_ENDBR

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  // save env parameter

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  push %rdi

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  CFI_ADJUST_CFA_OFFSET(8)

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  CFI_REL_OFFSET(%rdi, 0)

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  // save savesigs parameter

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  push %rsi

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  CFI_ADJUST_CFA_OFFSET(8)

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  CFI_REL_OFFSET(%rsi, 0)

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  // align stack frame

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  sub $8, %rsp

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  CFI_ADJUST_CFA_OFFSET(8)

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  // obtain SP, store in %rdi, first argument to `void __tsan_setjmp(uptr sp)`

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#if defined(__FreeBSD__) || defined(__NetBSD__)

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  lea 24(%rsp), %rdi

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#elif defined(__linux__) || defined(__APPLE__)

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  lea 32(%rsp), %rdi

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#else

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# error "Unknown platform"

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#endif

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  // call tsan interceptor

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  call ASM_SYMBOL(__tsan_setjmp)

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  // unalign stack frame

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  add $8, %rsp

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  CFI_ADJUST_CFA_OFFSET(-8)

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  // restore savesigs parameter

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  pop %rsi

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  CFI_ADJUST_CFA_OFFSET(-8)

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  CFI_RESTORE(%rsi)

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  // restore env parameter

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  pop %rdi

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  CFI_ADJUST_CFA_OFFSET(-8)

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  CFI_RESTORE(%rdi)

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  // tail jump to libc sigsetjmp

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  movl $0, %eax

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#if defined(__NetBSD__)

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  movq _ZN14__interception18real___sigsetjmp14E@GOTPCREL(%rip), %rdx

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  jmp *(%rdx)

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#elif !defined(__APPLE__)

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  movq _ZN14__interception14real_sigsetjmpE@GOTPCREL(%rip), %rdx

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  jmp *(%rdx)

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#else

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  jmp ASM_SYMBOL(sigsetjmp)

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#endif

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  CFI_ENDPROC

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#if defined(__NetBSD__)

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ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp14))

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#else

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ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(sigsetjmp))

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#endif

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#if !defined(__APPLE__) && !defined(__NetBSD__)

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.comm _ZN14__interception16real___sigsetjmpE,8,8

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.globl ASM_SYMBOL_INTERCEPTOR(__sigsetjmp)

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ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))

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ASM_SYMBOL_INTERCEPTOR(__sigsetjmp):

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  CFI_STARTPROC

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  _CET_ENDBR

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  // save env parameter

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  push %rdi

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  CFI_ADJUST_CFA_OFFSET(8)

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  CFI_REL_OFFSET(%rdi, 0)

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  // save savesigs parameter

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  push %rsi

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  CFI_ADJUST_CFA_OFFSET(8)

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  CFI_REL_OFFSET(%rsi, 0)

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  // align stack frame

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  sub $8, %rsp

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  CFI_ADJUST_CFA_OFFSET(8)

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  // obtain SP, store in %rdi, first argument to `void __tsan_setjmp(uptr sp)`

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#if defined(__FreeBSD__)

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  lea 24(%rsp), %rdi

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#else

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  lea 32(%rsp), %rdi

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#endif

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  // call tsan interceptor

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  call ASM_SYMBOL(__tsan_setjmp)

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  // unalign stack frame

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  add $8, %rsp

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  CFI_ADJUST_CFA_OFFSET(-8)

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  // restore savesigs parameter

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  pop %rsi

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  CFI_ADJUST_CFA_OFFSET(-8)

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  CFI_RESTORE(%rsi)

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  // restore env parameter

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  pop %rdi

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  CFI_ADJUST_CFA_OFFSET(-8)

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  CFI_RESTORE(%rdi)

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  // tail jump to libc sigsetjmp

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  movl $0, %eax

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  movq _ZN14__interception16real___sigsetjmpE@GOTPCREL(%rip), %rdx

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  jmp *(%rdx)

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  CFI_ENDPROC

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ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))

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#endif  // !defined(__APPLE__) && !defined(__NetBSD__)

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NO_EXEC_STACK_DIRECTIVE

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#endif

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