diff options
Diffstat (limited to 'src/runtime/mem_openbsd.c')
| -rw-r--r-- | src/runtime/mem_openbsd.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/runtime/mem_openbsd.c b/src/runtime/mem_openbsd.c index 31820e5170..ac3a2a565a 100644 --- a/src/runtime/mem_openbsd.c +++ b/src/runtime/mem_openbsd.c @@ -27,6 +27,29 @@ runtime·sysAlloc(uintptr n, uint64 *stat) return v; } +#pragma textflag NOSPLIT +void +runtime·sysMarkStack(void *v, uintptr n) +{ + void *p; + + // Stack regions on OpenBSD 6.4+ must be marked with MAP_STACK. + p = runtime·mmap(v, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE|MAP_FIXED|MAP_STACK, -1, 0); + if (p == ((void *)-1) || p != v) + runtime·throw("runtime: failed to mark stack"); +} + +#pragma textflag NOSPLIT +void +runtime·sysUnmarkStack(void *v, uintptr n) +{ + void *p; + + p = runtime·mmap(v, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE|MAP_FIXED, -1, 0); + if (p == ((void *)-1) || p != v) + runtime·throw("runtime: failed to unmark stack"); +} + void runtime·SysUnused(void *v, uintptr n) { |