diff options
Diffstat (limited to 'libc/sysdeps/linux/mips/pread_write.c')
| -rw-r--r-- | libc/sysdeps/linux/mips/pread_write.c | 116 |
1 files changed, 33 insertions, 83 deletions
diff --git a/libc/sysdeps/linux/mips/pread_write.c b/libc/sysdeps/linux/mips/pread_write.c index ea6b15f6a..b777dc47e 100644 --- a/libc/sysdeps/linux/mips/pread_write.c +++ b/libc/sysdeps/linux/mips/pread_write.c @@ -4,76 +4,39 @@ * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ -/* - * Based in part on the files - * ./sysdeps/unix/sysv/linux/pwrite.c, - * ./sysdeps/unix/sysv/linux/pread.c, - * sysdeps/posix/pread.c - * sysdeps/posix/pwrite.c - * from GNU libc 2.2.5, but reworked considerably... - */ #include <sys/syscall.h> #include <unistd.h> -#include <stdint.h> #include <endian.h> #include <sgidefs.h> -#ifdef __NR_pread64 /* Newer kernels renamed but it's the same. */ +#ifdef __NR_pread64 # ifdef __NR_pread # error "__NR_pread and __NR_pread64 both defined???" # endif # define __NR_pread __NR_pread64 #endif -extern __typeof(pread) __libc_pread; -extern __typeof(pwrite) __libc_pwrite; -#ifdef __UCLIBC_HAS_LFS__ -extern __typeof(pread64) __libc_pread64; -extern __typeof(pwrite64) __libc_pwrite64; -#endif - -#include <bits/kernel_types.h> - - #ifdef __NR_pread - -# if _MIPS_SIM == _MIPS_SIM_ABI64 -# define __NR___libc_pread __NR_pread -_syscall4(ssize_t, __libc_pread, int, fd, void *, buf, size_t, count, off_t, offset) -weak_alias (__libc_pread, pread) -# ifdef __UCLIBC_HAS_LFS__ -# define __NR___libc_pread64 __NR_pread -_syscall4(ssize_t, __libc_pread64, int, fd, void *, buf, size_t, count, off64_t, offset) -weak_alias (__libc_pread64, pread64) -# endif /* __UCLIBC_HAS_LFS__ */ +# if _MIPS_SIM == _MIPS_SIM_ABI64 /* glibc uses it for N32 as well */ +# define __NR___syscall_pread __NR_pread +static _syscall4(ssize_t, __syscall_pread, int, fd, void *, buf, size_t, count, off_t, offset) +# define MY_PREAD(fd, buf, count, offset) \ + __syscall_pread(fd, buf, count, offset) +# define MY_PREAD64(fd, buf, count, offset) \ + __syscall_pread(fd, buf, count, offset) # else /* O32 || N32 */ # define __NR___syscall_pread __NR_pread -static __inline__ _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf, - size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo) - -ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset) -{ - return(__syscall_pread(fd,buf,count,0,__LONG_LONG_PAIR(offset>>31,offset))); -} -weak_alias(__libc_pread,pread) - -# ifdef __UCLIBC_HAS_LFS__ -ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset) -{ - uint32_t low = offset & 0xffffffff; - uint32_t high = offset >> 32; - return(__syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR (high, low))); -} -weak_alias(__libc_pread64,pread64) -# endif /* __UCLIBC_HAS_LFS__ */ -# endif /* O32 || N32 */ - -#endif /* __NR_pread */ - -/**********************************************************************/ +static _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf, + size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo) +# define MY_PREAD(fd, buf, count, offset) \ + __syscall_pread(fd, buf, count, 0, OFF_HI_LO(offset)) +# define MY_PREAD64(fd, buf, count, offset) \ + __syscall_pread(fd, buf, count, 0, OFF64_HI_LO(offset)) +# endif +#endif -#ifdef __NR_pwrite64 /* Newer kernels renamed but it's the same. */ +#ifdef __NR_pwrite64 # ifdef __NR_pwrite # error "__NR_pwrite and __NR_pwrite64 both defined???" # endif @@ -81,35 +44,22 @@ weak_alias(__libc_pread64,pread64) #endif #ifdef __NR_pwrite - -# if _MIPS_SIM == _MIPS_SIM_ABI64 -# define __NR___libc_pwrite __NR_pwrite -_syscall4(ssize_t, __libc_pwrite, int, fd, const void *, buf, size_t, count, off_t, offset) -weak_alias (__libc_pwrite, pwrite) -# ifdef __UCLIBC_HAS_LFS__ -# define __NR___libc_pwrite64 __NR_pwrite -_syscall4(ssize_t, __libc_pwrite64, int, fd, const void *, buf, size_t, count, off64_t, offset) -weak_alias (__libc_pwrite64, pwrite64) -# endif /* __UCLIBC_HAS_LFS__ */ +# if _MIPS_SIM == _MIPS_SIM_ABI64 /* glibc uses it for N32 as well */ +# define __NR___syscall_pwrite __NR_pwrite +static _syscall4(ssize_t, __syscall_pwrite, int, fd, const void *, buf, size_t, count, off_t, offset) +# define MY_PWRITE(fd, buf, count, offset) \ + __syscall_pwrite(fd, buf, count, offset) +# define MY_PWRITE64(fd, buf, count, offset) \ + __syscall_pwrite(fd, buf, count, offset) # else /* O32 || N32 */ # define __NR___syscall_pwrite __NR_pwrite -static __inline__ _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf, - size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo) - -ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset) -{ - return(__syscall_pwrite(fd,buf,count,0,__LONG_LONG_PAIR(offset>>31,offset))); -} -weak_alias(__libc_pwrite,pwrite) +static _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf, + size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo) +# define MY_PWRITE(fd, buf, count, offset) \ + __syscall_pwrite(fd, buf, count, 0, OFF_HI_LO(offset)) +# define MY_PWRITE64(fd, buf, count, offset) \ + __syscall_pwrite(fd, buf, count, 0, OFF64_HI_LO(offset)) +# endif +#endif -# ifdef __UCLIBC_HAS_LFS__ -ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset) -{ - uint32_t low = offset & 0xffffffff; - uint32_t high = offset >> 32; - return(__syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR (high, low))); -} -weak_alias(__libc_pwrite64,pwrite64) -# endif /* __UCLIBC_HAS_LFS__ */ -# endif /* O32 || N32 */ -#endif /* __NR_pwrite */ +#include "../common/pread_write.c" |