mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-15 04:20:28 +08:00
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
#ifndef _SETJMP_H
|
|
#include <setjmp/setjmp.h>
|
|
|
|
#ifndef _ISOMAC
|
|
/* Now define the internal interfaces. */
|
|
|
|
/* Internal machine-dependent function to restore context sans signal mask. */
|
|
extern void __longjmp (__jmp_buf __env, int __val)
|
|
__attribute__ ((__noreturn__)) attribute_hidden;
|
|
|
|
extern void ____longjmp_chk (__jmp_buf __env, int __val)
|
|
__attribute__ ((__noreturn__)) attribute_hidden;
|
|
|
|
/* Internal function to possibly save the current mask of blocked signals
|
|
in ENV, and always set the flag saying whether or not it was saved.
|
|
This is used by the machine-dependent definition of `__sigsetjmp'.
|
|
Always returns zero, for convenience. */
|
|
extern int __sigjmp_save (jmp_buf __env, int __savemask);
|
|
|
|
extern void _longjmp_unwind (jmp_buf env, int val);
|
|
|
|
extern void __libc_siglongjmp (sigjmp_buf env, int val)
|
|
__attribute__ ((noreturn));
|
|
extern void __libc_longjmp (sigjmp_buf env, int val)
|
|
__attribute__ ((noreturn));
|
|
|
|
libc_hidden_proto (_setjmp)
|
|
libc_hidden_proto (__sigsetjmp)
|
|
|
|
# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN
|
|
extern __typeof (__sigsetjmp) __sigsetjmp attribute_hidden;
|
|
# endif
|
|
|
|
/* Check jmp_buf sizes, alignments and offsets. */
|
|
# include <stddef.h>
|
|
# include <jmp_buf-macros.h>
|
|
|
|
# define STR_HELPER(x) #x
|
|
# define STR(x) STR_HELPER(x)
|
|
|
|
# define TEST_SIZE(type, size) \
|
|
_Static_assert (sizeof (type) == size, \
|
|
"size of " #type " != " \
|
|
STR (size))
|
|
# define TEST_ALIGN(type, align) \
|
|
_Static_assert (__alignof__ (type) == align , \
|
|
"align of " #type " != " \
|
|
STR (align))
|
|
# define TEST_OFFSET(type, member, offset) \
|
|
_Static_assert (offsetof (type, member) == offset, \
|
|
"offset of " #member " field of " #type " != " \
|
|
STR (offset))
|
|
|
|
/* Check if jmp_buf have the expected sizes. */
|
|
TEST_SIZE (jmp_buf, JMP_BUF_SIZE);
|
|
TEST_SIZE (sigjmp_buf, SIGJMP_BUF_SIZE);
|
|
|
|
/* Check if jmp_buf have the expected alignments. */
|
|
TEST_ALIGN (jmp_buf, JMP_BUF_ALIGN);
|
|
TEST_ALIGN (sigjmp_buf, SIGJMP_BUF_ALIGN);
|
|
|
|
/* Check if internal fields in jmp_buf have the expected offsets. */
|
|
TEST_OFFSET (struct __jmp_buf_tag, __mask_was_saved,
|
|
MASK_WAS_SAVED_OFFSET);
|
|
TEST_OFFSET (struct __jmp_buf_tag, __saved_mask,
|
|
SAVED_MASK_OFFSET);
|
|
#endif
|
|
|
|
#endif
|