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2003-04-12  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/x86_64/tls.h (THREAD_SETMEM): Word around compiler bug
	which mishandles loading of global object addresses in PIC.
	(THREAD_SETMEM_NC): Likewise.
This commit is contained in:
Ulrich Drepper 2003-04-12 20:32:01 +00:00
parent 68107ec092
commit 177d1ad3ac
6 changed files with 30 additions and 10 deletions
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2
nptl/Banner
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@ -1 +1 @@
NPTL 0.34 by Ulrich Drepper
NPTL 0.35 by Ulrich Drepper

6
nptl/ChangeLog
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@ -1,3 +1,9 @@
2003-04-12 Ulrich Drepper <drepper@redhat.com>
* sysdeps/x86_64/tls.h (THREAD_SETMEM): Word around compiler bug
which mishandles loading of global object addresses in PIC.
(THREAD_SETMEM_NC): Likewise.
2003-04-11 Ulrich Drepper <drepper@redhat.com>
* pthread.h: Define new data structure for cleanup buffer. Declare

8
nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
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@ -105,7 +105,7 @@
cancellation state value is saved. */
# define EH_FRAME_0(name) \
.byte 4; \
.long L(PUSHSTATE)-name; \
.long L(PUSHSTATE)-L(name##START); \
.byte 14; \
.uleb128 8; \
.byte 4; \
@ -122,7 +122,7 @@
also to save the content of the %ebx register. */
# define EH_FRAME_3(name) \
.byte 4; \
.long L(PUSHBX1)-name; \
.long L(PUSHBX1)-L(name##START); \
.byte 14; \
.uleb128 8; \
.byte 4; \
@ -149,7 +149,7 @@
/* With four parameters the syscall wrappers have to save %ebx and %esi. */
# define EH_FRAME_4(name) \
.byte 4; \
.long L(PUSHSI1)-name; \
.long L(PUSHSI1)-L(name##START); \
.byte 14; \
.uleb128 8; \
.byte 4; \
@ -193,7 +193,7 @@
and %edi. */
# define EH_FRAME_5(name) \
.byte 4; \
.long L(PUSHDI1)-name; \
.long L(PUSHDI1)-L(name##START); \
.byte 14; \
.uleb128 8; \
.byte 4; \

17
nptl/sysdeps/x86_64/tls.h
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@ -204,6 +204,15 @@ typedef struct
__value; })
/* Loading addresses of objects on x86-64 needs to be treated special
when generating PIC code. */
#ifdef __pic__
# define IMM_MODE "nr"
#else
# define IMM_MODE "ir"
#endif
/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
# define THREAD_SETMEM(descr, member, value) \
({ if (sizeof (descr->member) == 1) \
@ -212,7 +221,7 @@ typedef struct
"i" (offsetof (struct pthread, member))); \
else if (sizeof (descr->member) == 4) \
asm volatile ("movl %0,%%fs:%P1" : \
: "ir" (value), \
: IMM_MODE (value), \
"i" (offsetof (struct pthread, member))); \
else \
{ \
@ -222,7 +231,7 @@ typedef struct
abort (); \
\
asm volatile ("movq %q0,%%fs:%P1" : \
: "ir" ((unsigned long int) value), \
: IMM_MODE ((unsigned long int) value), \
"i" (offsetof (struct pthread, member))); \
}})
@ -236,7 +245,7 @@ typedef struct
"r" (idx)); \
else if (sizeof (descr->member[0]) == 4) \
asm volatile ("movl %0,%%fs:%P1(,%q2,4)" : \
: "ir" (value), \
: IMM_MODE (value), \
"i" (offsetof (struct pthread, member[0])), \
"r" (idx)); \
else \
@ -247,7 +256,7 @@ typedef struct
abort (); \
\
asm volatile ("movq %q0,%%fs:%P1(,%q2,8)" : \
: "r" ((unsigned long int) value), \
: IMM_MODE ((unsigned long int) value), \
"i" (offsetof (struct pthread, member[0])), \
"r" (idx)); \
}})

2
sysdeps/generic/dl-tls.c
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@ -370,7 +370,7 @@ _dl_allocate_tls_init (void *result)
assert (map->l_tls_modid == cnt);
assert (map->l_tls_blocksize >= map->l_tls_initimage_size);
# if TLS_TCB_AT_TP
assert (map->l_tls_offset >= map->l_tls_blocksize);
assert ((size_t) map->l_tls_offset >= map->l_tls_blocksize);
dest = (char *) result - map->l_tls_offset;
# elif TLS_DTV_AT_TP
dest = (char *) result + map->l_tls_offset;

5
sysdeps/unix/sysv/linux/kernel-features.h
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@ -289,3 +289,8 @@
# define __ASSUME_NETLINK_SUPPORT 1
#endif
/* For x86, support for the sysenter instruction was available in
2.5.53. */
#if __LINUX_KERNEL_VERSION >= 132405 && defined __i386__
# define __ASSUME_VSYSCALL 1
#endif