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Diffstat (limited to 'src/pkg/runtime/mem_openbsd.c')
-rw-r--r--src/pkg/runtime/mem_openbsd.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/src/pkg/runtime/mem_openbsd.c b/src/pkg/runtime/mem_openbsd.c
index 91e36eb60..861ae90c7 100644
--- a/src/pkg/runtime/mem_openbsd.c
+++ b/src/pkg/runtime/mem_openbsd.c
@@ -45,32 +45,41 @@ runtime·SysFree(void *v, uintptr n, uint64 *stat)
runtime·munmap(v, n);
}
+void
+runtime·SysFault(void *v, uintptr n)
+{
+ runtime·mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE|MAP_FIXED, -1, 0);
+}
+
void*
-runtime·SysReserve(void *v, uintptr n)
+runtime·SysReserve(void *v, uintptr n, bool *reserved)
{
void *p;
// On 64-bit, people with ulimit -v set complain if we reserve too
// much address space. Instead, assume that the reservation is okay
// and check the assumption in SysMap.
- if(sizeof(void*) == 8)
+ if(sizeof(void*) == 8 && n > 1LL<<32) {
+ *reserved = false;
return v;
+ }
p = runtime·mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE, -1, 0);
if(p < (void*)4096)
return nil;
+ *reserved = true;
return p;
}
void
-runtime·SysMap(void *v, uintptr n, uint64 *stat)
+runtime·SysMap(void *v, uintptr n, bool reserved, uint64 *stat)
{
void *p;
runtime·xadd64(stat, n);
// On 64-bit, we don't actually have v reserved, so tread carefully.
- if(sizeof(void*) == 8) {
+ if(!reserved) {
p = runtime·mmap(v, n, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
if(p == (void*)ENOMEM)
runtime·throw("runtime: out of memory");