diff options
Diffstat (limited to 'src/runtime/asm_amd64.s')
| -rw-r--r-- | src/runtime/asm_amd64.s | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/runtime/asm_amd64.s b/src/runtime/asm_amd64.s index ea85146936..7c746803a8 100644 --- a/src/runtime/asm_amd64.s +++ b/src/runtime/asm_amd64.s @@ -181,6 +181,14 @@ TEXT runtime·rt0_go(SB),NOSPLIT|NOFRAME|TOPFRAME,$0 MOVQ AX, 24(SP) MOVQ BX, 32(SP) + // This is typically the entry point for Go programs. + // Call stack unwinding must not proceed past this frame. + // Set the frame pointer register to 0 so that frame pointer-based unwinders + // (which don't use debug info for performance reasons) + // won't attempt to unwind past this function. + // See go.dev/issue/63630 + MOVQ $0, BP + // create istack out of the given (operating system) stack. // _cgo_init may update stackguard. MOVQ $runtime·g0(SB), DI @@ -408,6 +416,13 @@ TEXT runtime·asminit(SB),NOSPLIT,$0-0 RET TEXT runtime·mstart(SB),NOSPLIT|TOPFRAME|NOFRAME,$0 + // This is the root frame of new Go-created OS threads. + // Call stack unwinding must not proceed past this frame. + // Set the frame pointer register to 0 so that frame pointer-based unwinders + // (which don't use debug info for performance reasons) + // won't attempt to unwind past this function. + // See go.dev/issue/63630 + MOVD $0, BP CALL runtime·mstart0(SB) RET // not reached |