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| author | Cupertino Miranda <cupertino.miranda@oracle.com> | 2025-08-22 11:37:00 +0100 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2025-08-27 10:45:45 -0300 |
| commit | 3b2b88cceeb79f73a72367800d91599e2af4bb39 (patch) | |
| tree | a4f7c0efe8d6c2a49ac448c977a639e609c3f45c /sysdeps/sparc | |
| parent | 921e251e8f364d00fc753274095007275381ae65 (diff) | |
| download | glibc-3b2b88cceeb79f73a72367800d91599e2af4bb39.zip glibc-3b2b88cceeb79f73a72367800d91599e2af4bb39.tar.gz glibc-3b2b88cceeb79f73a72367800d91599e2af4bb39.tar.bz2 | |
elf: early conversion of elf p_flags to mprotect flags
This patch replaces _dl_stack_flags global variable by
_dl_stack_prot_flags.
The advantage is that any convertion from p_flags to final used mprotect
flags occurs at loading of p_flags. It avoids repeated spurious
convertions of _dl_stack_flags, for example in allocate_thread_stack.
This modification was suggested in:
https://sourceware.org/pipermail/libc-alpha/2025-March/165537.html
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/sparc')
| -rw-r--r-- | sysdeps/sparc/stackinfo.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sysdeps/sparc/stackinfo.h b/sysdeps/sparc/stackinfo.h index 23a74ed..a4a0eb1 100644 --- a/sysdeps/sparc/stackinfo.h +++ b/sysdeps/sparc/stackinfo.h @@ -26,8 +26,8 @@ /* On sparc the stack grows down. */ #define _STACK_GROWS_DOWN 1 -/* Default to an executable stack. PF_X can be overridden if PT_GNU_STACK is - * present, but it is presumed absent. */ -#define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X) +/* Default to an executable stack. PROT_EXEC can be overridden if PT_GNU_STACK + * is present, but it is presumed absent. */ +#define DEFAULT_STACK_PROT_PERMS (PROT_READ|PROT_WRITE|PROT_EXEC) #endif /* stackinfo.h */ |