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| author | Sergey Bugaev <bugaevc@gmail.com> | 2024-01-03 20:14:43 +0300 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-01-04 23:48:23 +0100 |
| commit | 4145de65f696ae06be72fadd67967be556c31ac2 (patch) | |
| tree | 2d520062204d5badb73fd9bec659e779b5fb0698 /sysdeps/mach/hurd/init-first.c | |
| parent | 9eaa0e179962a10db91fe566753fc38623097dbe (diff) | |
| download | glibc-4145de65f696ae06be72fadd67967be556c31ac2.tar.gz glibc-4145de65f696ae06be72fadd67967be556c31ac2.tar.xz glibc-4145de65f696ae06be72fadd67967be556c31ac2.zip | |
hurd: Only init early static TLS if it's used to store stack or pointer guards
This is the case on both x86 architectures, but not on AArch64. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-ID: <20240103171502.1358371-11-bugaevc@gmail.com>
Diffstat (limited to 'sysdeps/mach/hurd/init-first.c')
| -rw-r--r-- | sysdeps/mach/hurd/init-first.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/sysdeps/mach/hurd/init-first.c b/sysdeps/mach/hurd/init-first.c index 8526191692..26ccd37e55 100644 --- a/sysdeps/mach/hurd/init-first.c +++ b/sysdeps/mach/hurd/init-first.c @@ -38,7 +38,16 @@ extern int __libc_argc attribute_hidden; extern char **__libc_argv attribute_hidden; extern char **_dl_argv; -#ifndef SHARED +#if !defined (SHARED) && (defined (THREAD_SET_STACK_GUARD) || defined (THREAD_SET_POINTER_GUARD)) +/* In the static case, we need to set up TLS early so that the stack + protection guard can be read at from TLS by the GCC-generated snippets, + on architectures that store the guard in TLS and not globally. */ +# define USE_INIT1_TCBHEAD 1 +#else +# define USE_INIT1_TCBHEAD 0 +#endif + +#if USE_INIT1_TCBHEAD static tcbhead_t __init1_tcbhead; #endif @@ -153,9 +162,7 @@ first_init (void) /* Initialize data structures so we can do RPCs. */ __mach_init (); -#ifndef SHARED - /* In the static case, we need to set up TLS early so that the stack - protection guard can be read at from TLS by the GCC-generated snippets. */ +#if USE_INIT1_TCBHEAD _hurd_tls_init (&__init1_tcbhead, 0); #endif |