diff options
Diffstat (limited to 'libpthread/nptl/allocatestack.c')
| -rw-r--r-- | libpthread/nptl/allocatestack.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libpthread/nptl/allocatestack.c b/libpthread/nptl/allocatestack.c index 290051796..137979542 100644 --- a/libpthread/nptl/allocatestack.c +++ b/libpthread/nptl/allocatestack.c @@ -328,8 +328,10 @@ change_stack_perm (struct pthread *pd #else # error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP" #endif +#ifdef __ARCH_USE_MMU__ if (mprotect (stack, len, PROT_READ | PROT_WRITE | PROT_EXEC) != 0) return errno; +#endif return 0; } @@ -593,6 +595,7 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp, #elif defined _STACK_GROWS_UP char *guard = (char *) (((uintptr_t) pd - guardsize) & ~pagesize_m1); #endif +#ifdef __ARCH_USE_MMU__ if (mprotect (guard, guardsize, PROT_NONE) != 0) { int err; @@ -618,6 +621,7 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp, return err; } +#endif pd->guardsize = guardsize; } @@ -630,6 +634,7 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp, char *guard = mem + (((size - guardsize) / 2) & ~pagesize_m1); char *oldguard = mem + (((size - pd->guardsize) / 2) & ~pagesize_m1); +#ifdef __ARCH_USE_MMU__ if (oldguard < guard && mprotect (oldguard, guard - oldguard, prot) != 0) goto mprot_error; @@ -647,6 +652,7 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp, pd->guardsize - guardsize, prot) != 0) goto mprot_error; #endif +#endif pd->guardsize = guardsize; } |