diff options
| author | Rhys Hiltner <rhys@justin.tv> | 2021-08-13 09:01:13 -0700 |
|---|---|---|
| committer | Michael Pratt <mpratt@google.com> | 2021-09-27 18:58:41 +0000 |
| commit | 8d09f7c5178b04bade2859d32d0710233a620d4f (patch) | |
| tree | 0888aa63801bcbd512f05b898b8998e20577fc33 /src/runtime/sys_linux_amd64.s | |
| parent | 5b909580849c611c633c111a15adb40c9c42ec8e (diff) | |
| download | go-8d09f7c5178b04bade2859d32d0710233a620d4f.tar.xz | |
runtime: use per-thread profiler for SetCgoTraceback platforms
Updates #35057
Change-Id: I61d772a2cbfb27540fb70c14676c68593076ca94
Reviewed-on: https://go-review.googlesource.com/c/go/+/342054
Run-TryBot: Rhys Hiltner <rhys@justin.tv>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Diffstat (limited to 'src/runtime/sys_linux_amd64.s')
| -rw-r--r-- | src/runtime/sys_linux_amd64.s | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/src/runtime/sys_linux_amd64.s b/src/runtime/sys_linux_amd64.s index 345dc90eb0..f0e58e11db 100644 --- a/src/runtime/sys_linux_amd64.s +++ b/src/runtime/sys_linux_amd64.s @@ -364,6 +364,23 @@ TEXT runtime·sigtramp(SB),NOSPLIT,$0 POP_REGS_HOST_TO_ABI0() RET +// Called using C ABI. +TEXT runtime·sigprofNonGoWrapper<>(SB),NOSPLIT,$0 + // Transition from C ABI to Go ABI. + PUSH_REGS_HOST_TO_ABI0() + + // Call into the Go signal handler + NOP SP // disable vet stack checking + ADJSP $24 + MOVL DI, 0(SP) // sig + MOVQ SI, 8(SP) // info + MOVQ DX, 16(SP) // ctx + CALL ·sigprofNonGo(SB) + ADJSP $-24 + + POP_REGS_HOST_TO_ABI0() + RET + // Used instead of sigtramp in programs that use cgo. // Arguments from kernel are in DI, SI, DX. TEXT runtime·cgoSigtramp(SB),NOSPLIT,$0 @@ -431,12 +448,12 @@ sigtrampnog: JNZ sigtramp // Skip stack trace if already locked. // Jump to the traceback function in runtime/cgo. - // It will call back to sigprofNonGo, which will ignore the - // arguments passed in registers. + // It will call back to sigprofNonGo, via sigprofNonGoWrapper, to convert + // the arguments to the Go calling convention. // First three arguments to traceback function are in registers already. MOVQ runtime·cgoTraceback(SB), CX MOVQ $runtime·sigprofCallers(SB), R8 - MOVQ $runtime·sigprofNonGo(SB), R9 + MOVQ $runtime·sigprofNonGoWrapper<>(SB), R9 MOVQ _cgo_callers(SB), AX JMP AX |