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authorUlrich Drepper <drepper@redhat.com>2002-08-20 11:10:37 +0000
committerUlrich Drepper <drepper@redhat.com>2002-08-20 11:10:37 +0000
commit69681bdee0226cef026ab761738373955393422b (patch)
treed104408a000f02c27dcbc06f2855c83e78e6b17e /linuxthreads
parentd78ce054e2a3b23fed53f42ea7aa6e1c2ff6d748 (diff)
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Update.
* include/unistd.h: Don't hide _exit.
Diffstat (limited to 'linuxthreads')
-rw-r--r--linuxthreads/ChangeLog6
-rw-r--r--linuxthreads/sysdeps/i386/tls.h6
-rw-r--r--linuxthreads/sysdeps/i386/useldt.h14
3 files changed, 18 insertions, 8 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index 93a71d74e6..86848a685e 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -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
diff --git a/linuxthreads/sysdeps/i386/tls.h b/linuxthreads/sysdeps/i386/tls.h
index 098b11caa0..39b4b63da3 100644
--- a/linuxthreads/sysdeps/i386/tls.h
+++ b/linuxthreads/sysdeps/i386/tls.h
@@ -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; \
diff --git a/linuxthreads/sysdeps/i386/useldt.h b/linuxthreads/sysdeps/i386/useldt.h
index c0285330e9..ff42853668 100644
--- a/linuxthreads/sysdeps/i386/useldt.h
+++ b/linuxthreads/sysdeps/i386/useldt.h
@@ -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 = \