86b2a5583b
PR sanitizer/79168 * merge.sh (change_comment_headers): Don't remove 2nd and 3rd line if the 3rd line doesn't contain 'The LLVM Compiler Infrastructure' text. * sanitizer_common/sanitizer_linux_mips64.S: Regenerated. * sanitizer_common/sanitizer_linux_x86_64.S: Likewise. * tsan/tsan_ppc_regs.h: Likewise. * tsan/tsan_rtl_aarch64.S: Likewise. * tsan/tsan_rtl_mips64.S: Likewise. * tsan/tsan_rtl_ppc64.S: Likewise. From-SVN: r244844
259 lines
6.4 KiB
ArmAsm
259 lines
6.4 KiB
ArmAsm
#include "sanitizer_common/sanitizer_asm.h"
|
|
|
|
.section .bss
|
|
.type __tsan_pointer_chk_guard, %object
|
|
.size __tsan_pointer_chk_guard, 8
|
|
__tsan_pointer_chk_guard:
|
|
.zero 8
|
|
|
|
.section .text
|
|
|
|
// GLIBC mangles the function pointers in jmp_buf (used in {set,long}*jmp
|
|
// functions) by XORing them with a random guard pointer. For AArch64 it is a
|
|
// global variable rather than a TCB one (as for x86_64/powerpc) and althought
|
|
// its value is exported by the loader, it lies within a private GLIBC
|
|
// namespace (meaning it should be only used by GLIBC itself and the ABI is
|
|
// not stable). So InitializeGuardPtr obtains the pointer guard value by
|
|
// issuing a setjmp and checking the resulting pointers values against the
|
|
// original ones.
|
|
.hidden _Z18InitializeGuardPtrv
|
|
.global _Z18InitializeGuardPtrv
|
|
.type _Z18InitializeGuardPtrv, @function
|
|
_Z18InitializeGuardPtrv:
|
|
CFI_STARTPROC
|
|
// Allocates a jmp_buf for the setjmp call.
|
|
stp x29, x30, [sp, -336]!
|
|
CFI_DEF_CFA_OFFSET (336)
|
|
CFI_OFFSET (29, -336)
|
|
CFI_OFFSET (30, -328)
|
|
add x29, sp, 0
|
|
CFI_DEF_CFA_REGISTER (29)
|
|
add x0, x29, 24
|
|
|
|
// Call libc setjmp that mangle the stack pointer value
|
|
adrp x1, :got:_ZN14__interception12real__setjmpE
|
|
ldr x1, [x1, #:got_lo12:_ZN14__interception12real__setjmpE]
|
|
ldr x1, [x1]
|
|
blr x1
|
|
|
|
// glibc setjmp mangles both the frame pointer (FP, pc+4 on blr) and the
|
|
// stack pointer (SP). FP will be placed on ((uintptr*)jmp_buf)[11] and
|
|
// SP at ((uintptr*)jmp_buf)[13].
|
|
// The mangle operation is just 'value' xor 'pointer guard value' and
|
|
// if we know the original value (SP) and the expected one, we can derive
|
|
// the guard pointer value.
|
|
mov x0, sp
|
|
|
|
// Loads the mangled SP pointer.
|
|
ldr x1, [x29, 128]
|
|
eor x0, x0, x1
|
|
adrp x2, __tsan_pointer_chk_guard
|
|
str x0, [x2, #:lo12:__tsan_pointer_chk_guard]
|
|
ldp x29, x30, [sp], 336
|
|
CFI_RESTORE (30)
|
|
CFI_RESTORE (19)
|
|
CFI_DEF_CFA (31, 0)
|
|
ret
|
|
CFI_ENDPROC
|
|
.size _Z18InitializeGuardPtrv, .-_Z18InitializeGuardPtrv
|
|
|
|
.hidden __tsan_setjmp
|
|
.comm _ZN14__interception11real_setjmpE,8,8
|
|
.type setjmp, @function
|
|
setjmp:
|
|
CFI_STARTPROC
|
|
|
|
// save env parameters for function call
|
|
stp x29, x30, [sp, -32]!
|
|
CFI_DEF_CFA_OFFSET (32)
|
|
CFI_OFFSET (29, -32)
|
|
CFI_OFFSET (30, -24)
|
|
|
|
// Adjust the SP for previous frame
|
|
add x29, sp, 0
|
|
CFI_DEF_CFA_REGISTER (29)
|
|
|
|
// Save jmp_buf
|
|
str x19, [sp, 16]
|
|
CFI_OFFSET (19, -16)
|
|
mov x19, x0
|
|
|
|
// SP pointer mangling (see glibc setjmp)
|
|
adrp x2, __tsan_pointer_chk_guard
|
|
ldr x2, [x2, #:lo12:__tsan_pointer_chk_guard]
|
|
add x0, x29, 32
|
|
eor x1, x2, x0
|
|
|
|
// call tsan interceptor
|
|
bl __tsan_setjmp
|
|
|
|
// restore env parameter
|
|
mov x0, x19
|
|
ldr x19, [sp, 16]
|
|
ldp x29, x30, [sp], 32
|
|
CFI_RESTORE (30)
|
|
CFI_RESTORE (19)
|
|
CFI_DEF_CFA (31, 0)
|
|
|
|
// tail jump to libc setjmp
|
|
adrp x1, :got:_ZN14__interception11real_setjmpE
|
|
ldr x1, [x1, #:got_lo12:_ZN14__interception11real_setjmpE]
|
|
ldr x1, [x1]
|
|
br x1
|
|
|
|
CFI_ENDPROC
|
|
.size setjmp, .-setjmp
|
|
|
|
.comm _ZN14__interception12real__setjmpE,8,8
|
|
.globl _setjmp
|
|
.type _setjmp, @function
|
|
_setjmp:
|
|
CFI_STARTPROC
|
|
|
|
// save env parameters for function call
|
|
stp x29, x30, [sp, -32]!
|
|
CFI_DEF_CFA_OFFSET (32)
|
|
CFI_OFFSET (29, -32)
|
|
CFI_OFFSET (30, -24)
|
|
|
|
// Adjust the SP for previous frame
|
|
add x29, sp, 0
|
|
CFI_DEF_CFA_REGISTER (29)
|
|
|
|
// Save jmp_buf
|
|
str x19, [sp, 16]
|
|
CFI_OFFSET (19, -16)
|
|
mov x19, x0
|
|
|
|
// SP pointer mangling (see glibc setjmp)
|
|
adrp x2, __tsan_pointer_chk_guard
|
|
ldr x2, [x2, #:lo12:__tsan_pointer_chk_guard]
|
|
add x0, x29, 32
|
|
eor x1, x2, x0
|
|
|
|
// call tsan interceptor
|
|
bl __tsan_setjmp
|
|
|
|
// Restore jmp_buf parameter
|
|
mov x0, x19
|
|
ldr x19, [sp, 16]
|
|
ldp x29, x30, [sp], 32
|
|
CFI_RESTORE (30)
|
|
CFI_RESTORE (19)
|
|
CFI_DEF_CFA (31, 0)
|
|
|
|
// tail jump to libc setjmp
|
|
adrp x1, :got:_ZN14__interception12real__setjmpE
|
|
ldr x1, [x1, #:got_lo12:_ZN14__interception12real__setjmpE]
|
|
ldr x1, [x1]
|
|
br x1
|
|
|
|
CFI_ENDPROC
|
|
.size _setjmp, .-_setjmp
|
|
|
|
.comm _ZN14__interception14real_sigsetjmpE,8,8
|
|
.globl sigsetjmp
|
|
.type sigsetjmp, @function
|
|
sigsetjmp:
|
|
CFI_STARTPROC
|
|
|
|
// save env parameters for function call
|
|
stp x29, x30, [sp, -32]!
|
|
CFI_DEF_CFA_OFFSET (32)
|
|
CFI_OFFSET (29, -32)
|
|
CFI_OFFSET (30, -24)
|
|
|
|
// Adjust the SP for previous frame
|
|
add x29, sp, 0
|
|
CFI_DEF_CFA_REGISTER (29)
|
|
|
|
// Save jmp_buf and savesigs
|
|
stp x19, x20, [sp, 16]
|
|
CFI_OFFSET (19, -16)
|
|
CFI_OFFSET (20, -8)
|
|
mov w20, w1
|
|
mov x19, x0
|
|
|
|
// SP pointer mangling (see glibc setjmp)
|
|
adrp x2, __tsan_pointer_chk_guard
|
|
ldr x2, [x2, #:lo12:__tsan_pointer_chk_guard]
|
|
add x0, x29, 32
|
|
eor x1, x2, x0
|
|
|
|
// call tsan interceptor
|
|
bl __tsan_setjmp
|
|
|
|
// restore env parameter
|
|
mov w1, w20
|
|
mov x0, x19
|
|
ldp x19, x20, [sp, 16]
|
|
ldp x29, x30, [sp], 32
|
|
CFI_RESTORE (30)
|
|
CFI_RESTORE (29)
|
|
CFI_RESTORE (19)
|
|
CFI_RESTORE (20)
|
|
CFI_DEF_CFA (31, 0)
|
|
|
|
// tail jump to libc sigsetjmp
|
|
adrp x2, :got:_ZN14__interception14real_sigsetjmpE
|
|
ldr x2, [x2, #:got_lo12:_ZN14__interception14real_sigsetjmpE]
|
|
ldr x2, [x2]
|
|
br x2
|
|
CFI_ENDPROC
|
|
.size sigsetjmp, .-sigsetjmp
|
|
|
|
.comm _ZN14__interception16real___sigsetjmpE,8,8
|
|
.globl __sigsetjmp
|
|
.type __sigsetjmp, @function
|
|
__sigsetjmp:
|
|
CFI_STARTPROC
|
|
|
|
// save env parameters for function call
|
|
stp x29, x30, [sp, -32]!
|
|
CFI_DEF_CFA_OFFSET (32)
|
|
CFI_OFFSET (29, -32)
|
|
CFI_OFFSET (30, -24)
|
|
|
|
// Adjust the SP for previous frame
|
|
add x29, sp, 0
|
|
CFI_DEF_CFA_REGISTER (29)
|
|
|
|
// Save jmp_buf and savesigs
|
|
stp x19, x20, [sp, 16]
|
|
CFI_OFFSET (19, -16)
|
|
CFI_OFFSET (20, -8)
|
|
mov w20, w1
|
|
mov x19, x0
|
|
|
|
// SP pointer mangling (see glibc setjmp)
|
|
adrp x2, __tsan_pointer_chk_guard
|
|
ldr x2, [x2, #:lo12:__tsan_pointer_chk_guard]
|
|
add x0, x29, 32
|
|
eor x1, x2, x0
|
|
|
|
// call tsan interceptor
|
|
bl __tsan_setjmp
|
|
|
|
mov w1, w20
|
|
mov x0, x19
|
|
ldp x19, x20, [sp, 16]
|
|
ldp x29, x30, [sp], 32
|
|
CFI_RESTORE (30)
|
|
CFI_RESTORE (29)
|
|
CFI_RESTORE (19)
|
|
CFI_RESTORE (20)
|
|
CFI_DEF_CFA (31, 0)
|
|
|
|
// tail jump to libc __sigsetjmp
|
|
adrp x2, :got:_ZN14__interception16real___sigsetjmpE
|
|
ldr x2, [x2, #:got_lo12:_ZN14__interception16real___sigsetjmpE]
|
|
ldr x2, [x2]
|
|
br x2
|
|
CFI_ENDPROC
|
|
.size __sigsetjmp, .-__sigsetjmp
|
|
|
|
#if defined(__linux__)
|
|
/* We do not need executable stack. */
|
|
.section .note.GNU-stack,"",@progbits
|
|
#endif
|