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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-06-06 00:00:19 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-06-06 02:04:32 +0200 |
| commit | ecfa912f4217c0af277bb5d9cd26155010556baf (patch) | |
| tree | 9bcd751e740b6fc8fef4a1b96dd0dcb0f3fb887b | |
| parent | 8dbb7a08ec52057819db4ee234f9429ab99eb4ae (diff) | |
| download | glibc-ecfa912f4217c0af277bb5d9cd26155010556baf.tar.gz glibc-ecfa912f4217c0af277bb5d9cd26155010556baf.tar.xz glibc-ecfa912f4217c0af277bb5d9cd26155010556baf.zip | |
hurd: Add stack guard support
* sysdeps/mach/hurd/i386/tls.h (THREAD_SET_STACK_GUARD, THREAD_COPY_STACK_GUARD): New macros * sysdeps/mach/hurd/i386/ld.abilist (__stack_chk_guard): Remove symbol.
| -rw-r--r-- | sysdeps/mach/hurd/i386/ld.abilist | 1 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/i386/tls.h | 9 |
2 files changed, 9 insertions, 1 deletions
diff --git a/sysdeps/mach/hurd/i386/ld.abilist b/sysdeps/mach/hurd/i386/ld.abilist index 6f591b2496..b2be75cbff 100644 --- a/sysdeps/mach/hurd/i386/ld.abilist +++ b/sysdeps/mach/hurd/i386/ld.abilist @@ -18,4 +18,3 @@ GLIBC_2.2.6 _r_debug D 0x14 GLIBC_2.2.6 abort F GLIBC_2.3 ___tls_get_addr F GLIBC_2.3 __tls_get_addr F -GLIBC_2.4 __stack_chk_guard D 0x4 diff --git a/sysdeps/mach/hurd/i386/tls.h b/sysdeps/mach/hurd/i386/tls.h index 0c2de054d8..03a894bd35 100644 --- a/sysdeps/mach/hurd/i386/tls.h +++ b/sysdeps/mach/hurd/i386/tls.h @@ -295,6 +295,15 @@ out: asm ("movl %%gs:%P1,%0" : "=q" (_dtv) : "i" (offsetof (tcbhead_t, dtv)));\ _dtv; }) + +/* Set the stack guard field in TCB head. */ +#define THREAD_SET_STACK_GUARD(value) \ + THREAD_SETMEM (THREAD_SELF, stack_guard, value) +#define THREAD_COPY_STACK_GUARD(descr) \ + ((descr)->stack_guard \ + = THREAD_GETMEM (THREAD_SELF, stack_guard)) + + # include <mach/machine/thread_status.h> /* Set up TLS in the new thread of a fork child, copying from the original. */ |