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Diffstat (limited to 'libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h')
-rw-r--r--libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h156
1 files changed, 10 insertions, 146 deletions
diff --git a/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h b/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h
index 0e0851e1e..ed1fa30b1 100644
--- a/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h
+++ b/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h
@@ -20,7 +20,7 @@
#ifndef _PT_MACHINE_H
#define _PT_MACHINE_H 1
-# include <features.h>
+#include <features.h>
#ifndef __ASSEMBLER__
# include <stddef.h> /* For offsetof. */
@@ -32,6 +32,9 @@
# define PT_EI __extern_always_inline
# endif
+extern long int testandset (int *);
+extern int __compare_and_swap (long int *, long int, long int);
+
/* Get some notion of the current stack. Need not be exactly the top
of the stack, just something somewhere in the current frame. */
# define CURRENT_STACK_FRAME stack_pointer
@@ -40,14 +43,14 @@ register char * stack_pointer __asm__ ("%rsp") __attribute_used__;
/* Spinlock implementation; required. */
PT_EI long int
-testandset (int *spinlock)
+testandset (int *__spinlock)
{
long int ret;
__asm__ __volatile__ (
"xchgl %k0, %1"
- : "=r"(ret), "=m"(*spinlock)
- : "0"(1), "m"(*spinlock)
+ : "=r"(ret), "=m"(*__spinlock)
+ : "0"(1), "m"(*__spinlock)
: "memory");
return ret;
@@ -58,157 +61,18 @@ testandset (int *spinlock)
# define HAS_COMPARE_AND_SWAP
PT_EI int
-__compare_and_swap (long int *p, long int oldval, long int newval)
+__compare_and_swap (long int *__p, long int __oldval, long int __newval)
{
char ret;
long int readval;
__asm__ __volatile__ ("lock; cmpxchgq %3, %1; sete %0"
- : "=q" (ret), "=m" (*p), "=a" (readval)
- : "r" (newval), "m" (*p), "a" (oldval)
+ : "=q" (ret), "=m" (*__p), "=a" (readval)
+ : "r" (__newval), "m" (*__p), "a" (__oldval)
: "memory");
return ret;
}
-/* Return the thread descriptor for the current thread.
-
- The contained asm must *not* be marked volatile since otherwise
- assignments like
- pthread_descr self = thread_self();
- do not get optimized away. */
-# define THREAD_SELF \
-({ \
- register pthread_descr __self; \
- __asm__ ("movq %%fs:%c1,%0" : "=r" (__self) \
- : "i" (offsetof (struct _pthread_descr_struct, \
- p_header.data.self))); \
- __self; \
-})
-
-/* Prototype for the system call. */
-extern int arch_prctl (int __code, unsigned long __addr);
-
-/* Initialize the thread-unique value. */
-# define INIT_THREAD_SELF(descr, nr) \
-{ \
- if (arch_prctl (ARCH_SET_FS, (unsigned long)descr) != 0) \
- abort (); \
-}
-
-/* Read member of the thread descriptor directly. */
-# define THREAD_GETMEM(descr, member) \
-({ \
- __typeof__ (descr->member) __value; \
- if (sizeof (__value) == 1) \
- __asm__ __volatile__ ("movb %%fs:%P2,%b0" \
- : "=q" (__value) \
- : "0" (0), \
- "i" (offsetof (struct _pthread_descr_struct, \
- member))); \
- else if (sizeof (__value) == 4) \
- __asm__ __volatile__ ("movl %%fs:%P2,%k0" \
- : "=r" (__value) \
- : "0" (0), \
- "i" (offsetof (struct _pthread_descr_struct, \
- member))); \
- else \
- { \
- if (sizeof (__value) != 8) \
- /* There should not be any value with a size other than 1, 4 or 8. */\
- abort (); \
- \
- __asm__ __volatile__ ("movq %%fs:%P1,%0" \
- : "=r" (__value) \
- : "i" (offsetof (struct _pthread_descr_struct, \
- member))); \
- } \
- __value; \
-})
-
-/* 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 %%fs:(%2),%b0" \
- : "=q" (__value) \
- : "0" (0), \
- "r" (offsetof (struct _pthread_descr_struct, \
- member))); \
- else if (sizeof (__value) == 4) \
- __asm__ __volatile__ ("movl %%fs:(%2),%k0" \
- : "=r" (__value) \
- : "0" (0), \
- "r" (offsetof (struct _pthread_descr_struct, \
- member))); \
- else \
- { \
- if (sizeof (__value) != 8) \
- /* There should not be any value with a size other than 1, 4 or 8. */\
- abort (); \
- \
- __asm__ __volatile__ ("movq %%fs:(%1),%0" \
- : "=r" (__value) \
- : "r" (offsetof (struct _pthread_descr_struct, \
- member))); \
- } \
- __value; \
-})
-
-/* Set member of the thread descriptor directly. */
-# define THREAD_SETMEM(descr, member, value) \
-({ \
- __typeof__ (descr->member) __value = (value); \
- if (sizeof (__value) == 1) \
- __asm__ __volatile__ ("movb %0,%%fs:%P1" : \
- : "q" (__value), \
- "i" (offsetof (struct _pthread_descr_struct, \
- member))); \
- else if (sizeof (__value) == 4) \
- __asm__ __volatile__ ("movl %k0,%%fs:%P1" : \
- : "r" (__value), \
- "i" (offsetof (struct _pthread_descr_struct, \
- member))); \
- else \
- { \
- if (sizeof (__value) != 8) \
- /* There should not be any value with a size other than 1, 4 or 8. */\
- abort (); \
- \
- __asm__ __volatile__ ("movq %0,%%fs:%P1" : \
- : "r" (__value), \
- "i" (offsetof (struct _pthread_descr_struct, \
- member))); \
- } \
-})
-
-/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
-# define THREAD_SETMEM_NC(descr, member, value) \
-({ \
- __typeof__ (descr->member) __value = (value); \
- if (sizeof (__value) == 1) \
- __asm__ __volatile__ ("movb %0,%%fs:(%1)" : \
- : "q" (__value), \
- "r" (offsetof (struct _pthread_descr_struct, \
- member))); \
- else if (sizeof (__value) == 4) \
- __asm__ __volatile__ ("movl %k0,%%fs:(%1)" : \
- : "r" (__value), \
- "r" (offsetof (struct _pthread_descr_struct, \
- member))); \
- else \
- { \
- if (sizeof (__value) != 8) \
- /* There should not be any value with a size other than 1, 4 or 8. */\
- abort (); \
- \
- __asm__ __volatile__ ("movq %0,%%fs:(%1)" : \
- : "r" (__value), \
- "r" (offsetof (struct _pthread_descr_struct, \
- member))); \
- } \
-})
-
#endif /* !__ASSEMBLER__ */
/* We want the OS to assign stack addresses. */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 07:26:24 +0000