mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-05 21:00:05 +00:00
Update.
* sysdeps/i386/useldt.h: Go back to using 16-bit instructions when loading/reading segment registers. Some old hardware doesn't handle the 32-bit instructions as expected. * sysdeps/i386/tls.h: Likewise.
This commit is contained in:
parent
9d69bd2492
commit
c761cdf5a0
@ -1,5 +1,10 @@
|
||||
2002-08-20 Ulrich Drepper <drepper@redhat.com>
|
||||
|
||||
* sysdeps/i386/useldt.h: Go back to using 16-bit instructions when
|
||||
loading/reading segment registers. Some old hardware doesn't
|
||||
handle the 32-bit instructions as expected.
|
||||
* sysdeps/i386/tls.h: Likewise.
|
||||
|
||||
* sysdeps/i386/tls.h (TLS_DO_SET_THREAD_AREA): Second parameter is
|
||||
renamed to secondcall and use is negated.
|
||||
(TLS_SETUP_GS_SEGMENT): Likewise.
|
||||
|
@ -123,8 +123,8 @@ typedef struct
|
||||
int result; \
|
||||
if (secondcall) \
|
||||
ldt_entry.entry_number = ({ int _gs; \
|
||||
asm ("movl %%gs, %0" : "=q" (_gs)); \
|
||||
_gs >> 3; }); \
|
||||
asm ("movw %%gs, %w0" : "=q" (_gs)); \
|
||||
(_gs & 0xffff) >> 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, secondcall); \
|
||||
if (__builtin_expect (__gs, 7) != -1) \
|
||||
{ \
|
||||
asm ("movl %0, %%gs" : : "q" (__gs)); \
|
||||
asm ("movw %w0, %%gs" : : "q" (__gs)); \
|
||||
__gs = 0; \
|
||||
} \
|
||||
__gs; \
|
||||
|
@ -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 ("movl %0, %%gs" : : "q" (nr * 8 + 7)); \
|
||||
asm ("movw %w0, %%gs" : : "q" (nr * 8 + 7)); \
|
||||
})
|
||||
|
||||
/* When using the new set_thread_area call, we don't need to change %gs
|
||||
@ -83,13 +83,13 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
|
||||
({ \
|
||||
int __gs; \
|
||||
struct modify_ldt_ldt_s ldt_entry = \
|
||||
{ ({ asm ("movl %%gs, %0" : "=q" (__gs)); __gs >> 3; }), \
|
||||
{ ({ asm ("movw %%gs, %w0" : "=q" (__gs)); (__gs & 0xffff) >> 3; }), \
|
||||
(unsigned long int) descr, sizeof (struct _pthread_descr_struct), \
|
||||
1, 0, 0, 0, 0, 1, 0 }; \
|
||||
if (__builtin_expect (INLINE_SYSCALL (set_thread_area, 1, &ldt_entry) == 0, \
|
||||
1)) \
|
||||
asm ("movl %0, %%gs" :: "q" (__gs)); \
|
||||
else \
|
||||
asm ("movw %w0, %%gs" :: "q" (__gs)); \
|
||||
else \
|
||||
__gs = -1; \
|
||||
__gs; \
|
||||
})
|
||||
@ -117,7 +117,7 @@ extern int __have_no_set_thread_area;
|
||||
#define FREE_THREAD(descr, nr) \
|
||||
{ \
|
||||
int __gs; \
|
||||
__asm__ __volatile__ ("movl %%gs, %0" : "=q" (__gs)); \
|
||||
__asm__ __volatile__ ("movw %%gs, %w0" : "=q" (__gs)); \
|
||||
if (__builtin_expect (__gs & 4, 0)) \
|
||||
{ \
|
||||
struct modify_ldt_ldt_s ldt_entry = \
|
||||
|
Loading…
Reference in New Issue
Block a user