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hurd: Add stack guard support

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* 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.
This commit is contained in:
Samuel Thibault 2020-06-06 00:00:19 +00:00
parent 8dbb7a08ec
commit ecfa912f42
2 changed files with 9 additions and 1 deletions
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1
sysdeps/mach/hurd/i386/ld.abilist
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@ -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

9
sysdeps/mach/hurd/i386/tls.h
View File

@ -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. */