diff options
Diffstat (limited to 'src/runtime/sys_windows_amd64.s')
| -rw-r--r-- | src/runtime/sys_windows_amd64.s | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/runtime/sys_windows_amd64.s b/src/runtime/sys_windows_amd64.s index 9699c9679c..e66f444ff5 100644 --- a/src/runtime/sys_windows_amd64.s +++ b/src/runtime/sys_windows_amd64.s @@ -10,6 +10,7 @@ // Offsets into Thread Environment Block (pointer in GS) #define TEB_TlsSlots 0x1480 +#define TEB_ArbitraryPtr 0x28 // void runtime·asmstdcall(void *c); TEXT runtime·asmstdcall(SB),NOSPLIT,$16 @@ -301,7 +302,11 @@ TEXT runtime·wintls(SB),NOSPLIT,$0 // Assert that slot is less than 64 so we can use _TEB->TlsSlots CMPQ CX, $64 JB ok - CALL runtime·abort(SB) + + // Fallback to the TEB arbitrary pointer. + // TODO: don't use the arbitrary pointer (see go.dev/issue/59824) + MOVQ $TEB_ArbitraryPtr, CX + JMP settls ok: // Convert the TLS index at CX into // an offset from TEB_TlsSlots. @@ -309,5 +314,6 @@ ok: // Save offset from TLS into tls_g. ADDQ $TEB_TlsSlots, CX +settls: MOVQ CX, runtime·tls_g(SB) RET |