diff options
Diffstat (limited to 'src/runtime/asm_s390x.s')
| -rw-r--r-- | src/runtime/asm_s390x.s | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/runtime/asm_s390x.s b/src/runtime/asm_s390x.s index 9159a67372..334e1aa909 100644 --- a/src/runtime/asm_s390x.s +++ b/src/runtime/asm_s390x.s @@ -346,6 +346,13 @@ TEXT runtime·morestack(SB),NOSPLIT|NOFRAME,$0-0 UNDEF TEXT runtime·morestack_noctxt(SB),NOSPLIT|NOFRAME,$0-0 + // Force SPWRITE. This function doesn't actually write SP, + // but it is called with a special calling convention where + // the caller doesn't save LR on stack but passes it as a + // register (R5), and the unwinder currently doesn't understand. + // Make it SPWRITE to stop unwinding. (See issue 54332) + MOVD R15, R15 + MOVD $0, R12 BR runtime·morestack(SB) |