diff options
Diffstat (limited to 'src/runtime/sys_windows_arm64.s')
| -rw-r--r-- | src/runtime/sys_windows_arm64.s | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/runtime/sys_windows_arm64.s b/src/runtime/sys_windows_arm64.s index 1161ad0132..22bf1dda70 100644 --- a/src/runtime/sys_windows_arm64.s +++ b/src/runtime/sys_windows_arm64.s @@ -12,6 +12,7 @@ // Offsets into Thread Environment Block (pointer in R18) #define TEB_error 0x68 #define TEB_TlsSlots 0x1480 +#define TEB_ArbitraryPtr 0x28 // Note: R0-R7 are args, R8 is indirect return value address, // R9-R15 are caller-save, R19-R29 are callee-save. @@ -273,12 +274,15 @@ TEXT runtime·wintls(SB),NOSPLIT,$0 // Assert that slot is less than 64 so we can use _TEB->TlsSlots CMP $64, R0 BLT ok - MOVD $runtime·abort(SB), R1 - BL (R1) + // Fallback to the TEB arbitrary pointer. + // TODO: don't use the arbitrary pointer (see go.dev/issue/59824) + MOVD $TEB_ArbitraryPtr, R0 + B settls ok: // Save offset from R18 into tls_g. LSL $3, R0 ADD $TEB_TlsSlots, R0 +settls: MOVD R0, runtime·tls_g(SB) RET |