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Add VDSO support to sparc.

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* sysdeps/unix/sysv/linux/sparc/init-first.c: New file.
	* sysdeps/unix/sysv/linux/sparc/libc-vdso.h: New file.
	* sysdeps/unix/sysv/linux/sparc/Makefile: Add dl-vdso to
	sysdep_routines in subdir elf.
	* sysdeps/unix/sysv/linux/sparc/Versions: Add GLIBC_PRIVATE
	version for __vdso_clock_gettime.
	* sysdeps/unix/sysv/linux/sparc/sysdep.h (INTERNAL_VSYSCALL_CALL):
	Define.
	(HAVE_CLOCK_GETTIME_VSYSCALL): Define.
	(HAVE_GETTIMEOFDAY_VSYSCALL): Define.
This commit is contained in:
David S. Miller
2018-10-18 11:42:19 -07:00
parent 0a271c8f25
commit 94a3a27f5d
6 changed files with 109 additions and 0 deletions
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11
sysdeps/unix/sysv/linux/sparc/sysdep.h
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@ -34,6 +34,17 @@
#else /* __ASSEMBLER__ */
#define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \
({ \
long _ret = funcptr (args); \
err = ((unsigned long) (_ret) >= (unsigned long) -4095L); \
_ret; \
})
/* List of system calls which are supported as vsyscalls. */
# define HAVE_CLOCK_GETTIME_VSYSCALL 1
# define HAVE_GETTIMEOFDAY_VSYSCALL 1
#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) \
({ INTERNAL_SYSCALL_DECL(err); \