diff options
Diffstat (limited to 'src/runtime/sys_linux_amd64.s')
| -rw-r--r-- | src/runtime/sys_linux_amd64.s | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/src/runtime/sys_linux_amd64.s b/src/runtime/sys_linux_amd64.s index 832b98b674..839df16406 100644 --- a/src/runtime/sys_linux_amd64.s +++ b/src/runtime/sys_linux_amd64.s @@ -244,12 +244,29 @@ TEXT runtime·sigfwd(SB),NOSPLIT,$0-32 POPQ BP RET -TEXT runtime·sigtramp(SB),NOSPLIT,$24 - MOVQ DI, 0(SP) // signum - MOVQ SI, 8(SP) // info - MOVQ DX, 16(SP) // ctx +TEXT runtime·sigtramp(SB),NOSPLIT,$72 + // Save callee-saved C registers, since the caller may be a C signal handler. + MOVQ BX, bx-8(SP) + MOVQ BP, bp-16(SP) // save in case GOEXPERIMENT=noframepointer is set + MOVQ R12, r12-24(SP) + MOVQ R13, r13-32(SP) + MOVQ R14, r14-40(SP) + MOVQ R15, r15-48(SP) + // We don't save mxcsr or the x87 control word because sigtrampgo doesn't + // modify them. + + MOVQ DX, ctx-56(SP) + MOVQ SI, info-64(SP) + MOVQ DI, signum-72(SP) MOVQ $runtime·sigtrampgo(SB), AX CALL AX + + MOVQ r15-48(SP), R15 + MOVQ r14-40(SP), R14 + MOVQ r13-32(SP), R13 + MOVQ r12-24(SP), R12 + MOVQ bp-16(SP), BP + MOVQ bx-8(SP), BX RET // Used instead of sigtramp in programs that use cgo. |