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* sysdeps/unix/sysv/linux/x86_64/Versions: Add arch_prctl.
This commit is contained in:
Andreas Jaeger 2001-11-29 16:44:59 +00:00
parent a47fd6810c
commit 647530279e
4 changed files with 166 additions and 0 deletions
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2
ChangeLog
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@ -1,5 +1,7 @@
2001-11-29 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/x86_64/Versions: Add arch_prctl.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Add arch_prctl
call.

13
linuxthreads/ChangeLog
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@ -1,3 +1,16 @@
2001-11-29 Andreas Jaeger <aj@suse.de>
* sysdeps/x86_64/pt-machine.h: Use %gs as thread specific
register.
(THREAD_SELF): New.
(INIT_THREAD_SELF): New.
(THREAD_GETMEM): New.
(THREAD_GETMEM_NC):
(THREAD_SETMEM): New.
(THREAD_SETMEM_NC): New.
(FLOATING_STACKS): Define.
(ARCH_STACK_MAX_SIZE): Define.
2001-11-28 Kaz Kylheku <kaz@ashi.footprints.net>
Bugfix to pthread_key_delete. It was iterating over the thread

149
linuxthreads/sysdeps/x86_64/pt-machine.h
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@ -18,6 +18,11 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stddef.h> /* For offsetof. */
#include <stdlib.h> /* For abort(). */
#include <asm/prctl.h>
#ifndef PT_EI
# define PT_EI extern inline
#endif
@ -59,3 +64,147 @@ __compare_and_swap (long int *p, long int oldval, long int newval)
: "memory");
return ret;
}
/* Return the thread descriptor for the current thread.
The contained asm must *not* be marked volatile since otherwise
assignments like
pthread_descr self = thread_self();
do not get optimized away. */
#define THREAD_SELF \
({ \
register pthread_descr __self; \
__asm__ ("movq %%gs:%c1,%0" : "=r" (__self) \
: "i" (offsetof (struct _pthread_descr_struct, \
p_header.data.self))); \
__self; \
})
/* Prototype for the system call. */
extern int __arch_prctl (int __code, unsigned long __addr);
/* Initialize the thread-unique value. */
#define INIT_THREAD_SELF(descr, nr) \
{ \
if (__arch_prctl (ARCH_SET_GS, descr) != 0) \
abort (); \
}
/* Read member of the thread descriptor directly. */
#define THREAD_GETMEM(descr, member) \
({ \
__typeof__ (descr->member) __value; \
if (sizeof (__value) == 1) \
__asm__ __volatile__ ("movb %%gs:%P2,%b0" \
: "=q" (__value) \
: "0" (0), \
"i" (offsetof (struct _pthread_descr_struct, \
member))); \
else if (sizeof (__value) == 4) \
__asm__ __volatile__ ("movl %%gs:%P1,%0" \
: "=r" (__value) \
: "i" (offsetof (struct _pthread_descr_struct, \
member))); \
else \
{ \
if (sizeof (__value) != 8) \
/* There should not be any value with a size other than 1, 4 or 8. */\
abort (); \
\
__asm__ __volatile__ ("movq %%gs:%P1,%0" \
: "=r" (__value) \
: "i" (offsetof (struct _pthread_descr_struct, \
member))); \
} \
__value; \
})
/* Same as THREAD_GETMEM, but the member offset can be non-constant. */
#define THREAD_GETMEM_NC(descr, member) \
({ \
__typeof__ (descr->member) __value; \
if (sizeof (__value) == 1) \
__asm__ __volatile__ ("movb %%gs:(%2),%b0" \
: "=q" (__value) \
: "0" (0), \
"r" (offsetof (struct _pthread_descr_struct, \
member))); \
else if (sizeof (__value) == 4) \
__asm__ __volatile__ ("movl %%gs:(%1),%0" \
: "=r" (__value) \
: "r" (offsetof (struct _pthread_descr_struct, \
member))); \
else \
{ \
if (sizeof (__value) != 8) \
/* There should not be any value with a size other than 1, 4 or 8. */\
abort (); \
\
__asm__ __volatile__ ("movq %%gs:(%1),%0" \
: "=r" (__value) \
: "r" (offsetof (struct _pthread_descr_struct, \
member))); \
} \
__value; \
})
/* Set member of the thread descriptor directly. */
#define THREAD_SETMEM(descr, member, value) \
({ \
__typeof__ (descr->member) __value = (value); \
if (sizeof (__value) == 1) \
__asm__ __volatile__ ("movb %0,%%gs:%P1" : \
: "q" (__value), \
"i" (offsetof (struct _pthread_descr_struct, \
member))); \
else if (sizeof (__value) == 4) \
__asm__ __volatile__ ("movl %0,%%gs:%P1" : \
: "r" (__value), \
"i" (offsetof (struct _pthread_descr_struct, \
member))); \
else \
{ \
if (sizeof (__value) != 8) \
/* There should not be any value with a size other than 1, 4 or 8. */\
abort (); \
\
__asm__ __volatile__ ("movq %0,%%gs:%P1" : \
: "r" (__value), \
"i" (offsetof (struct _pthread_descr_struct, \
member))); \
} \
})
/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
#define THREAD_SETMEM_NC(descr, member, value) \
({ \
__typeof__ (descr->member) __value = (value); \
if (sizeof (__value) == 1) \
__asm__ __volatile__ ("movb %0,%%gs:(%1)" : \
: "q" (__value), \
"r" (offsetof (struct _pthread_descr_struct, \
member))); \
else if (sizeof (__value) == 4) \
__asm__ __volatile__ ("movl %0,%%gs:(%1)" : \
: "r" (__value), \
"r" (offsetof (struct _pthread_descr_struct, \
member))); \
else \
{ \
if (sizeof (__value) != 8) \
/* There should not be any value with a size other than 1, 4 or 8. */\
abort (); \
\
__asm__ __volatile__ ("movq %0,%%gs:(%1)" : \
: "r" (__value), \
"r" (offsetof (struct _pthread_descr_struct, \
member))); \
} \
})
/* We want the OS to assign stack addresses. */
#define FLOATING_STACKS 1
/* Maximum size of the stack if the rlimit is unlimited. */
#define ARCH_STACK_MAX_SIZE 32*1024*1024

2
sysdeps/unix/sysv/linux/x86_64/Versions
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@ -1,5 +1,7 @@
libc {
GLIBC_2.2.5 {
arch_prctl; __arch_prctl;
ioperm; iopl;
__modify_ldt; modify_ldt;