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* include/unistd.h: Don't hide _exit.
This commit is contained in:
Ulrich Drepper 2002-08-20 11:10:37 +00:00
parent d78ce054e2
commit 69681bdee0
5 changed files with 24 additions and 9 deletions
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2
ChangeLog
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@ -1,5 +1,7 @@
2002-08-20 Ulrich Drepper <drepper@redhat.com>
* include/unistd.h: Don't hide _exit.
* elf/rtld.c (_dl_start): Pass extra argument 1 to TLS_INIT_TP.
(dl_main): Padd extra argument 0 to TLS_INIT_TP.
* sysdeps/generic/libc-tls.c (__libc_setup_tls): Pass extra

5
include/unistd.h
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@ -1,7 +1,10 @@
#ifndef _UNISTD_H
# include <posix/unistd.h>
libc_hidden_proto (_exit)
// XXX Normally we should be able to hide _exit. But in the thread library
// XXX we might need to overload this function so that all threads can be
// XXX killed.
// libc_hidden_proto (_exit)
libc_hidden_proto (alarm)
libc_hidden_proto (confstr)
libc_hidden_proto (execl)

6
linuxthreads/ChangeLog
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@ -1,5 +1,11 @@
2002-08-20 Ulrich Drepper <drepper@redhat.com>
* sysdeps/i386/tls.h: Use 32-bit operations when handling segment
registers. No need to mask upper 16 bits in this case.
* sysdeps/i386/useldt.h: Likewise.
(DO_SET_THREAD_AREA): We have to load %gs again even if the value
is the same since the GDT content changed.
* sysdeps/i386/tls.h (TLS_INIT_TP): Add new parameter and pass it on
to TLS_SETUP_GS_SEGMENT.
(TLS_SETUP_GS_SEGMENT): Add new parameter and pass it on to

6
linuxthreads/sysdeps/i386/tls.h
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@ -123,8 +123,8 @@ typedef struct
int result; \
if (!firstcall) \
ldt_entry.entry_number = ({ int _gs; \
asm ("movw %%gs, %w0" : "=q" (_gs)); \
(_gs & 0xffff) >> 3; }); \
asm ("movl %%gs, %0" : "=q" (_gs)); \
_gs >> 3; }); \
asm volatile (TLS_LOAD_EBX \
"int $0x80\n\t" \
TLS_LOAD_EBX \
@ -164,7 +164,7 @@ typedef struct
__gs = TLS_SETUP_GS_SEGMENT (_descr, firstcall); \
if (__builtin_expect (__gs, 7) != -1) \
{ \
asm ("movw %w0, %%gs" : : "q" (__gs)); \
asm ("movl %0, %%gs" : : "q" (__gs)); \
__gs = 0; \
} \
__gs; \

14
linuxthreads/sysdeps/i386/useldt.h
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@ -72,7 +72,7 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
1, 0, 0, 0, 0, 1, 0 }; \
if (__modify_ldt (1, &ldt_entry, sizeof (ldt_entry)) != 0) \
abort (); \
asm ("movw %w0, %%gs" : : "q" (nr * 8 + 7)); \
asm ("movl %0, %%gs" : : "q" (nr * 8 + 7)); \
})
/* When using the new set_thread_area call, we don't need to change %gs
@ -83,11 +83,15 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
({ \
int __gs; \
struct modify_ldt_ldt_s ldt_entry = \
{ ({ asm ("movw %%gs, %w0" : "=q" (__gs)); __gs >> 3; }), \
{ ({ asm ("movl %%gs, %0" : "=q" (__gs)); __gs >> 3; }), \
(unsigned long int) descr, sizeof (struct _pthread_descr_struct), \
1, 0, 0, 0, 0, 1, 0 }; \
__builtin_expect (INLINE_SYSCALL (set_thread_area, 1, &ldt_entry) == 0, 1) \
? __gs : -1; \
if (__builtin_expect (INLINE_SYSCALL (set_thread_area, 1, &ldt_entry) == 0, \
1)) \
asm ("movl %0, %%gs" :: "q" (__gs)); \
else \
__gs = -1; \
__gs; \
})
#if defined __ASSUME_SET_THREAD_AREA_SYSCALL && defined HAVE_TLS_SUPPORT
@ -113,7 +117,7 @@ extern int __have_no_set_thread_area;
#define FREE_THREAD(descr, nr) \
{ \
int __gs; \
__asm__ __volatile__ ("movw %%gs, %w0" : "=q" (__gs)); \
__asm__ __volatile__ ("movl %%gs, %0" : "=q" (__gs)); \
if (__builtin_expect (__gs & 4, 0)) \
{ \
struct modify_ldt_ldt_s ldt_entry = \