diff options
Diffstat (limited to 'linuxthreads')
| -rw-r--r-- | linuxthreads/ChangeLog | 6 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/i386/tls.h | 6 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/i386/useldt.h | 14 |
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 = \ |