diff options
Diffstat (limited to 'src/runtime/sys_darwin_arm64.s')
| -rw-r--r-- | src/runtime/sys_darwin_arm64.s | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/runtime/sys_darwin_arm64.s b/src/runtime/sys_darwin_arm64.s index 4a51fb3a86..4111b3427b 100644 --- a/src/runtime/sys_darwin_arm64.s +++ b/src/runtime/sys_darwin_arm64.s @@ -314,6 +314,13 @@ TEXT runtime·fcntl_trampoline(SB),NOSPLIT,$0 MOVW R2, (RSP) // arg 3 is variadic, pass on stack MOVW 0(R0), R0 // arg 1 fd BL libc_fcntl(SB) + MOVD $-1, R1 + CMP R0, R1 + BNE noerr + BL libc_error(SB) + MOVW (R0), R0 + NEG R0, R0 // caller expects negative errno value +noerr: ADD $16, RSP RET |