#include "tsan_ppc_regs.h"
.section .text
.hidden __tsan_setjmp
.globl _setjmp
.type _setjmp, @function
.align 4
#if _CALL_ELF == 2
_setjmp:
#else
.section ".opd","aw"
.align 3
_setjmp:
.quad .L._setjmp,.TOC.@tocbase,0
.previous
#endif
.L._setjmp:
mflr r0
stdu r1,-48(r1)
std r2,24(r1)
std r3,32(r1)
std r0,40(r1)
// r3 is the original stack pointer.
addi r3,r1,48
// r4 is the mangled stack pointer (see glibc)
ld r4,-28696(r13)
xor r4,r3,r4
// Materialize a TOC in case we were called from libc.
// For big-endian, we load the TOC from the OPD. For little-
// endian, we use the .TOC. symbol to find it.
nop
bcl 20,31,0f
0:
mflr r2
#if _CALL_ELF == 2
addis r2,r2,.TOC.-0b@ha
addi r2,r2,.TOC.-0b@l
#else
addis r2,r2,_setjmp-0b@ha
addi r2,r2,_setjmp-0b@l
ld r2,8(r2)
#endif
// Call the interceptor.
bl __tsan_setjmp
nop
// Restore regs needed for setjmp.
ld r3,32(r1)
ld r0,40(r1)
// Emulate the real setjmp function. We do this because we can't
// perform a sibcall: The real setjmp function trashes the TOC
// pointer, and with a sibcall we have no way to restore it.
// This way we can make sure our caller's stack pointer and
// link register are saved correctly in the jmpbuf.
ld r6,-28696(r13)
addi r5,r1,48 // original stack ptr of caller
xor r5,r6,r5
std r5,0(r3) // mangled stack ptr of caller
ld r5,24(r1)
std r5,8(r3) // caller's saved TOC pointer
xor r0,r6,r0
std r0,16(r3) // caller's mangled return address
mfcr r0
// Nonvolatiles.
std r14,24(r3)
stfd f14,176(r3)
stw r0,172(r3) // CR
std r15,32(r3)
stfd f15,184(r3)
std r16,40(r3)
stfd f16,192(r3)
std r17,48(r3)
stfd f17,200(r3)
std r18,56(r3)
stfd f18,208(r3)
std r19,64(r3)
stfd f19,216(r3)
std r20,72(r3)
stfd f20,224(r3)
std r21,80(r3)
stfd f21,232(r3)
std r22,88(r3)
stfd f22,240(r3)
std r23,96(r3)
stfd f23,248(r3)
std r24,104(r3)
stfd f24,256(r3)
std r25,112(r3)
stfd f25,264(r3)
std r26,120(r3)
stfd f26,272(r3)
std r27,128(r3)
stfd f27,280(r3)
std r28,136(r3)
stfd f28,288(r3)
std r29,144(r3)
stfd f29,296(r3)
std r30,152(r3)
stfd f30,304(r3)
std r31,160(r3)
stfd f31,312(r3)
addi r5,r3,320
mfspr r0,256
stw r0,168(r3) // VRSAVE
addi r6,r5,16
stvx v20,0,r5
addi r5,r5,32
stvx v21,0,r6
addi r6,r6,32
stvx v22,0,r5
addi r5,r5,32
stvx v23,0,r6
addi r6,r6,32
stvx v24,0,r5
addi r5,r5,32
stvx v25,0,r6
addi r6,r6,32
stvx v26,0,r5
addi r5,r5,32
stvx v27,0,r6
addi r6,r6,32
stvx v28,0,r5
addi r5,r5,32
stvx v29,0,r6
addi r6,r6,32
stvx v30,0,r5
stvx v31,0,r6
// Clear the "mask-saved" slot.
li r4,0
stw r4,512(r3)
// Restore TOC, LR, and stack and return to caller.
ld r2,24(r1)
ld r0,40(r1)
addi r1,r1,48
li r3,0 // This is the setjmp return path
mtlr r0
blr
.size _setjmp, .-.L._setjmp
.globl setjmp
.type setjmp, @function
.align 4
setjmp:
b _setjmp
.size setjmp, .-setjmp
// sigsetjmp is like setjmp, except that the mask in r4 needs
// to be saved at offset 512 of the jump buffer.
.globl __sigsetjmp
.type __sigsetjmp, @function
.align 4
#if _CALL_ELF == 2
__sigsetjmp:
#else
.section ".opd","aw"
.align 3
__sigsetjmp:
.quad .L.__sigsetjmp,.TOC.@tocbase,0
.previous
#endif
.L.__sigsetjmp:
mflr r0
stdu r1,-64(r1)
std r2,24(r1)
std r3,32(r1)
std r4,40(r1)
std r0,48(r1)
// r3 is the original stack pointer.
addi r3,r1,64
// r4 is the mangled stack pointer (see glibc)
ld r4,-28696(r13)
xor r4,r3,r4
// Materialize a TOC in case we were called from libc.
// For big-endian, we load the TOC from the OPD. For little-
// endian, we use the .TOC. symbol to find it.
nop
bcl 20,31,1f
1:
mflr r2
#if _CALL_ELF == 2
addis r2,r2,.TOC.-1b@ha
addi r2,r2,.TOC.-1b@l
#else
addis r2,r2,_setjmp-1b@ha
addi r2,r2,_setjmp-1b@l
ld r2,8(r2)
#endif
// Call the interceptor.
bl __tsan_setjmp
nop
// Restore regs needed for __sigsetjmp.
ld r3,32(r1)
ld r4,40(r1)
ld r0,48(r1)
// Emulate the real sigsetjmp function. We do this because we can't
// perform a sibcall: The real sigsetjmp function trashes the TOC
// pointer, and with a sibcall we have no way to restore it.
// This way we can make sure our caller's stack pointer and
// link register are saved correctly in the jmpbuf.
ld r6,-28696(r13)
addi r5,r1,64 // original stack ptr of caller
xor r5,r6,r5
std r5,0(r3) // mangled stack ptr of caller
ld r5,24(r1)
std r5,8(r3) // caller's saved TOC pointer
xor r0,r6,r0
std r0,16(r3) // caller's mangled return address
mfcr r0
// Nonvolatiles.
std r14,24(r3)
stfd f14,176(r3)
stw r0,172(r3) // CR
std r15,32(r3)
stfd f15,184(r3)
std r16,40(r3)
stfd f16,192(r3)
std r17,48(r3)
stfd f17,200(r3)
std r18,56(r3)
stfd f18,208(r3)
std r19,64(r3)
stfd f19,216(r3)
std r20,72(r3)
stfd f20,224(r3)
std r21,80(r3)
stfd f21,232(r3)
std r22,88(r3)
stfd f22,240(r3)
std r23,96(r3)
stfd f23,248(r3)
std r24,104(r3)
stfd f24,256(r3)
std r25,112(r3)
stfd f25,264(r3)
std r26,120(r3)
stfd f26,272(r3)
std r27,128(r3)
stfd f27,280(r3)
std r28,136(r3)
stfd f28,288(r3)
std r29,144(r3)
stfd f29,296(r3)
std r30,152(r3)
stfd f30,304(r3)
std r31,160(r3)
stfd f31,312(r3)
addi r5,r3,320
mfspr r0,256
stw r0,168(r3) // VRSAVE
addi r6,r5,16
stvx v20,0,r5
addi r5,r5,32
stvx v21,0,r6
addi r6,r6,32
stvx v22,0,r5
addi r5,r5,32
stvx v23,0,r6
addi r6,r6,32
stvx v24,0,r5
addi r5,r5,32
stvx v25,0,r6
addi r6,r6,32
stvx v26,0,r5
addi r5,r5,32
stvx v27,0,r6
addi r6,r6,32
stvx v28,0,r5
addi r5,r5,32
stvx v29,0,r6
addi r6,r6,32
stvx v30,0,r5
stvx v31,0,r6
// Save into the "mask-saved" slot.
stw r4,512(r3)
// Restore TOC, LR, and stack and return to caller.
ld r2,24(r1)
ld r0,48(r1)
addi r1,r1,64
li r3,0 // This is the sigsetjmp return path
mtlr r0
blr
.size __sigsetjmp, .-.L.__sigsetjmp
.globl sigsetjmp
.type sigsetjmp, @function
.align 4
sigsetjmp:
b __sigsetjmp
.size sigsetjmp, .-sigsetjmp
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