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1998-08-28 13:58  Ulrich Drepper  <drepper@cygnus.com>

	* internals.h: Also define THREAD_GETMEM_NC and THREAD_SETMEM_NC to
	access thread data with non-constant offsets.
	* specific.c: Use THREAD_GETMEM_NC and THREAD_SETMEM_NC where
	necessary.

	* sysdeps/i386/useldt.h: Fix typo.  Add THREAD_GETMEM_NC and
	THREAD_SETMEM_NC definitions.

	* sysdeps/sparc/sparc32/pt-machine.h: Define THREAD_GETMEM_NC and
	THREAD_SETMEM_NC.
	* sysdeps/sparc/sparc64/pt-machine.h: Likewise.
This commit is contained in:
Ulrich Drepper
1998-08-28 14:02:28 +00:00
parent 997a416551
commit 75311719d3
6 changed files with 86 additions and 16 deletions
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linuxthreads/sysdeps/i386/useldt.h
+48 -2
View File
@@ -82,7 +82,7 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
({ \
__typeof__ (descr->member) __value; \
if (sizeof (__value) == 1) \
__asm__ __volatile__ ("movb %%gs:%P1,%b0" \
__asm__ __volatile__ ("movb %%gs:%P2,%b0" \
: "=r" (__value) \
: "0" (0), \
"i" (offsetof (struct _pthread_descr_struct, \
@@ -101,7 +101,31 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
__value; \
})
/* Set member of the thread descriptor directly. */
/* Same as THREAD_GETMEM, but the member offset can be non-constant. */
#define THREAD_GETMEM_NC(descr, member) \
({ \
__typeof__ (descr->member) __value; \
if (sizeof (__value) == 1) \
__asm__ __volatile__ ("movb %%gs:(%2),%b0" \
: "=r" (__value) \
: "0" (0), \
"r" (offsetof (struct _pthread_descr_struct, \
member))); \
else \
{ \
if (sizeof (__value) != 4) \
/* There should not be any value with a size other than 1 or 4. */ \
abort (); \
\
__asm__ __volatile__ ("movl %%gs:(%1),%0" \
: "=r" (__value) \
: "r" (offsetof (struct _pthread_descr_struct, \
member))); \
} \
__value; \
})
/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
#define THREAD_SETMEM(descr, member, value) \
({ \
__typeof__ (descr->member) __value = (value); \
@@ -122,3 +146,25 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
member))); \
} \
})
/* Set member of the thread descriptor directly. */
#define THREAD_SETMEM_NC(descr, member, value) \
({ \
__typeof__ (descr->member) __value = (value); \
if (sizeof (__value) == 1) \
__asm__ __volatile__ ("movb %0,%%gs:(%1)" : \
: "r" (__value), \
"r" (offsetof (struct _pthread_descr_struct, \
member))); \
else \
{ \
if (sizeof (__value) != 4) \
/* There should not be any value with a size other than 1 or 4. */ \
abort (); \
\
__asm__ __volatile__ ("movl %0,%%gs:(%1)" : \
: "r" (__value), \
"r" (offsetof (struct _pthread_descr_struct, \
member))); \
} \
})