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Cast to __intptr_t before casting pointer to int64

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This commit is contained in:
H.J. Lu 2012-11-26 16:42:38 -08:00
parent 4cf77aa984
commit c515fb5148
8 changed files with 67 additions and 13 deletions
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17
ChangeLog
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@ -1,3 +1,20 @@
2012-11-26 H.J. Lu <hongjiu.lu@intel.com>
* elf/dl-load.c (_dl_map_object_from_fd): Cast to uintptr_t
before casting to void *.
* include/libc-internal.h (__pointer_type): New macro.
(__integer_if_pointer_type_sub): Likewise.
(__integer_if_pointer_type): Likewise.
(cast_to_integer): Likewise.
* sysdeps/x86_64/bits/atomic.h: Include <libc-internal.h>.
(__arch_c_compare_and_exchange_val_64_acq): Use cast_to_integer
before casting to atomic64_t.
(atomic_exchange_acq): Likewise.
(__arch_exchange_and_add_body): Likewise.
(__arch_add_body): Likewise.
(atomic_add_negative): Likewise.
(atomic_add_zero): Likewise.
2012-11-26 Joseph Myers <joseph@codesourcery.com>
* sysdeps/generic/unwind-dw2-fde.c (get_pc_begin): New function.

3
elf/dl-load.c
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@ -1351,7 +1351,8 @@ cannot allocate TLS data structures for initial thread");
&& ((size_t) (c->mapend - c->mapstart + c->mapoff)
>= header->e_phoff + header->e_phnum * sizeof (ElfW(Phdr))))
/* Found the program header in this segment. */
l->l_phdr = (void *) (c->mapstart + header->e_phoff - c->mapoff);
l->l_phdr = (void *) (uintptr_t) (c->mapstart + header->e_phoff
- c->mapoff);
if (c->allocend > c->dataend)
{

16
include/libc-internal.h
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@ -34,4 +34,20 @@ extern void __libc_thread_freeres (void);
/* Define and initialize `__progname' et. al. */
extern void __init_misc (int, char **, char **);
/* 1 if 'type' is a pointer type, 0 otherwise. */
# define __pointer_type(type) (__builtin_classify_type ((type) 0) == 5)
/* __intptr_t if P is true, or T if P is false. */
# define __integer_if_pointer_type_sub(T, P) \
__typeof__ (*(0 ? (__typeof__ (0 ? (T *) 0 : (void *) (P))) 0 \
: (__typeof__ (0 ? (__intptr_t *) 0 : (void *) (!(P)))) 0))
/* __intptr_t if EXPR has a pointer type, or the type of EXPR otherwise. */
# define __integer_if_pointer_type(expr) \
__integer_if_pointer_type_sub(__typeof__ ((__typeof__ (expr)) 0), \
__pointer_type (__typeof__ (expr)))
/* Cast an integer or a pointer VAL to integer with proper type. */
# define cast_to_integer(val) ((__integer_if_pointer_type (val)) (val))
#endif /* _LIBC_INTERNAL */

11
nptl/ChangeLog
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@ -1,3 +1,14 @@
2012-11-26 H.J. Lu <hongjiu.lu@intel.com>
* unwind.c (__pthread_unwind): Pass address of unwind_cleanup
to THREAD_SETMEM.
* sysdeps/i386/tls.h: Include <libc-internal.h>.
(THREAD_SETMEM): Use cast_to_integer before casting to uint64_t.
(THREAD_SETMEM_NC): Likewise.
* sysdeps/x86_64/tls.h: Include <libc-internal.h>.
(THREAD_SETMEM): Use cast_to_integer before casting to uint64_t.
(THREAD_SETMEM_NC): Likewise.
2012-11-21 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/sem_post.c (__old_sem_post): Cast result

5
nptl/sysdeps/i386/tls.h
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@ -26,6 +26,7 @@
# include <stdint.h>
# include <stdlib.h>
# include <sysdep.h>
# include <libc-internal.h>
# include <kernel-features.h>
@ -343,7 +344,7 @@ union user_desc_init
\
asm volatile ("movl %%eax,%%gs:%P1\n\t" \
"movl %%edx,%%gs:%P2" : \
: "A" ((uint64_t) (value)), \
: "A" ((uint64_t) cast_to_integer (value)), \
"i" (offsetof (struct pthread, member)), \
"i" (offsetof (struct pthread, member) + 4)); \
}})
@ -370,7 +371,7 @@ union user_desc_init
\
asm volatile ("movl %%eax,%%gs:%P1(,%2,8)\n\t" \
"movl %%edx,%%gs:4+%P1(,%2,8)" : \
: "A" ((uint64_t) (value)), \
: "A" ((uint64_t) cast_to_integer (value)), \
"i" (offsetof (struct pthread, member)), \
"r" (idx)); \
}})

5
nptl/sysdeps/x86_64/tls.h
View File

@ -26,6 +26,7 @@
# include <stdint.h>
# include <stdlib.h>
# include <sysdep.h>
# include <libc-internal.h>
# include <kernel-features.h>
/* Replacement type for __m128 since this file is included by ld.so,
@ -263,7 +264,7 @@ typedef struct
abort (); \
\
asm volatile ("movq %q0,%%fs:%P1" : \
: IMM_MODE ((uint64_t) (value)), \
: IMM_MODE ((uint64_t) cast_to_integer (value)), \
"i" (offsetof (struct pthread, member))); \
}})
@ -288,7 +289,7 @@ typedef struct
abort (); \
\
asm volatile ("movq %q0,%%fs:%P1(,%q2,8)" : \
: IMM_MODE ((uint64_t) (value)), \
: IMM_MODE ((uint64_t) cast_to_integer (value)), \
"i" (offsetof (struct pthread, member[0])), \
"r" (idx)); \
}})

2
nptl/unwind.c
View File

@ -124,7 +124,7 @@ __pthread_unwind (__pthread_unwind_buf_t *buf)
/* This is not a catchable exception, so don't provide any details about
the exception type. We do need to initialize the field though. */
THREAD_SETMEM (self, exc.exception_class, 0);
THREAD_SETMEM (self, exc.exception_cleanup, unwind_cleanup);
THREAD_SETMEM (self, exc.exception_cleanup, &unwind_cleanup);
_Unwind_ForcedUnwind (&self->exc, unwind_stop, ibuf);
#else

21
sysdeps/x86_64/bits/atomic.h
View File

@ -18,6 +18,7 @@
#include <stdint.h>
#include <tls.h> /* For tcbhead_t. */
#include <libc-internal.h>
typedef int8_t atomic8_t;
@ -101,8 +102,9 @@ typedef uintmax_t uatomic_max_t;
"lock\n" \
"0:\tcmpxchgq %q2, %1" \
: "=a" (ret), "=m" (*mem) \
: "q" ((atomic64_t) (newval)), "m" (*mem), \
"0" ((atomic64_t) (oldval)), \
: "q" ((atomic64_t) cast_to_integer (newval)), \
"m" (*mem), \
"0" ((atomic64_t) cast_to_integer (oldval)), \
"i" (offsetof (tcbhead_t, multiple_threads))); \
ret; })
@ -125,7 +127,8 @@ typedef uintmax_t uatomic_max_t;
else \
__asm __volatile ("xchgq %q0, %1" \
: "=r" (result), "=m" (*mem) \
: "0" ((atomic64_t) (newvalue)), "m" (*mem)); \
: "0" ((atomic64_t) cast_to_integer (newvalue)), \
"m" (*mem)); \
result; })
@ -149,7 +152,8 @@ typedef uintmax_t uatomic_max_t;
else \
__asm __volatile (lock "xaddq %q0, %1" \
: "=r" (result), "=m" (*mem) \
: "0" ((atomic64_t) (value)), "m" (*mem), \
: "0" ((atomic64_t) cast_to_integer (value)), \
"m" (*mem), \
"i" (offsetof (tcbhead_t, multiple_threads))); \
result; })
@ -187,7 +191,8 @@ typedef uintmax_t uatomic_max_t;
else \
__asm __volatile (lock "addq %q1, %0" \
: "=m" (*mem) \
: "ir" ((atomic64_t) (value)), "m" (*mem), \
: "ir" ((atomic64_t) cast_to_integer (value)), \
"m" (*mem), \
"i" (offsetof (tcbhead_t, multiple_threads))); \
} while (0)
@ -218,7 +223,8 @@ typedef uintmax_t uatomic_max_t;
else \
__asm __volatile (LOCK_PREFIX "addq %q2, %0; sets %1" \
: "=m" (*mem), "=qm" (__result) \
: "ir" ((atomic64_t) (value)), "m" (*mem)); \
: "ir" ((atomic64_t) cast_to_integer (value)), \
"m" (*mem)); \
__result; })
@ -239,7 +245,8 @@ typedef uintmax_t uatomic_max_t;
else \
__asm __volatile (LOCK_PREFIX "addq %q2, %0; setz %1" \
: "=m" (*mem), "=qm" (__result) \
: "ir" ((atomic64_t) (value)), "m" (*mem)); \
: "ir" ((atomic64_t) cast_to_integer (value)), \
"m" (*mem)); \
__result; })