diff options
Diffstat (limited to 'ldso/include/dl-syscall.h')
| -rw-r--r-- | ldso/include/dl-syscall.h | 104 |
1 files changed, 49 insertions, 55 deletions
diff --git a/ldso/include/dl-syscall.h b/ldso/include/dl-syscall.h index 1e2ceccd6..344a93039 100644 --- a/ldso/include/dl-syscall.h +++ b/ldso/include/dl-syscall.h @@ -4,14 +4,21 @@ /* Pull in the arch specific syscall implementation */ #include <ld_syscalls.h> /* For MAP_ANONYMOUS -- differs between platforms */ -#include <asm/mman.h> +#include <asm/mman.h> /* Pull in whatever this particular arch's kernel thinks the kernel version of * struct stat should look like. It turns out that each arch has a different * opinion on the subject, and different kernel revs use different names... */ #define kernel_stat stat #include <bits/kernel_stat.h> +#include <bits/kernel_types.h> +/* _dl_open() parameters */ +#define O_RDONLY 0x0000 +#define O_WRONLY 01 +#define O_RDWR 02 +#define O_CREAT 0100 + /* Encoding of the file mode. */ #define S_IFMT 0170000 /* These bits determine file type. */ @@ -25,7 +32,6 @@ #define S_IFSOCK 0140000 /* Socket. */ /* Protection bits. */ - #define S_ISUID 04000 /* Set user ID on execution. */ #define S_ISGID 02000 /* Set group ID on execution. */ #define S_ISVTX 01000 /* Save swapped text after use (sticky). */ @@ -33,6 +39,19 @@ #define S_IWRITE 0200 /* Write by owner. */ #define S_IEXEC 0100 /* Execute by owner. */ +/* Stuff for _dl_mmap */ +#if 0 +#define MAP_FAILED ((void *) -1) +#define _dl_mmap_check_error(X) (((void *)X) == MAP_FAILED) +#else +#ifndef _dl_MAX_ERRNO +#define _dl_MAX_ERRNO 4096 +#endif +#define _dl_mmap_check_error(__res) \ + (((int)__res) < 0 && ((int)__res) >= -_dl_MAX_ERRNO) +#endif + + /* Here are the definitions for some syscalls that are used by the dynamic linker. The idea is that we want to be able @@ -40,79 +59,29 @@ we use our own version here. Note that we cannot assume any dynamic linking at all, so we cannot return any error codes. We just punt if there is an error. */ - - #define __NR__dl_exit __NR_exit static inline _syscall1(void, _dl_exit, int, status); - #define __NR__dl_close __NR_close static inline _syscall1(int, _dl_close, int, fd); - -#if defined(__powerpc__) || defined(__mips__) || defined(__sh__) -/* PowerPC, MIPS and SuperH have a different calling convention for mmap(). */ -#define __NR__dl_mmap __NR_mmap -static inline _syscall6(void *, _dl_mmap, void *, start, size_t, length, - int, prot, int, flags, int, fd, off_t, offset); -#else -#define __NR__dl_mmap_real __NR_mmap -static inline _syscall1(void *, _dl_mmap_real, unsigned long *, buffer); - -static inline void * _dl_mmap(void * addr, unsigned long size, int prot, - int flags, int fd, unsigned long offset) -{ - unsigned long buffer[6]; - - buffer[0] = (unsigned long) addr; - buffer[1] = (unsigned long) size; - buffer[2] = (unsigned long) prot; - buffer[3] = (unsigned long) flags; - buffer[4] = (unsigned long) fd; - buffer[5] = (unsigned long) offset; - return (void *) _dl_mmap_real(buffer); -} -#endif - -#ifndef _dl_MAX_ERRNO -#define _dl_MAX_ERRNO 4096 -#endif -#define _dl_mmap_check_error(__res) \ - (((int)__res) < 0 && ((int)__res) >= -_dl_MAX_ERRNO) -#ifndef MAP_ANONYMOUS -#ifdef __sparc__ -#define MAP_ANONYMOUS 0x20 -#else -#error MAP_ANONYMOUS not defined and suplementary value not known -#endif -#endif - - #define __NR__dl_open __NR_open -#define O_RDONLY 0x0000 -#define O_WRONLY 01 -#define O_RDWR 02 -#define O_CREAT 0100 /* not fcntl */ -static inline _syscall2(int, _dl_open, const char *, fn, int, flags); +static inline _syscall3(int, _dl_open, const char *, fn, int, flags, __kernel_mode_t, mode); #define __NR__dl_write __NR_write -static inline _syscall3(unsigned long, _dl_write, int, fd, +static inline _syscall3(unsigned long, _dl_write, int, fd, const void *, buf, unsigned long, count); - #define __NR__dl_read __NR_read -static inline _syscall3(unsigned long, _dl_read, int, fd, +static inline _syscall3(unsigned long, _dl_read, int, fd, const void *, buf, unsigned long, count); #define __NR__dl_mprotect __NR_mprotect static inline _syscall3(int, _dl_mprotect, const void *, addr, unsigned long, len, int, prot); - - #define __NR__dl_stat __NR_stat static inline _syscall2(int, _dl_stat, const char *, file_name, struct stat *, buf); - #define __NR__dl_munmap __NR_munmap static inline _syscall2(int, _dl_munmap, void *, start, unsigned long, length); @@ -134,5 +103,30 @@ static inline _syscall0(gid_t, _dl_getpid); #define __NR__dl_readlink __NR_readlink static inline _syscall3(int, _dl_readlink, const char *, path, char *, buf, size_t, bufsiz); +#if defined(__powerpc__) || defined(__mips__) || defined(__sh__) +/* PowerPC, MIPS and SuperH have a different calling convention for mmap(). */ +#define __NR__dl_mmap __NR_mmap +static inline _syscall6(void *, _dl_mmap, void *, start, size_t, length, + int, prot, int, flags, int, fd, off_t, offset); +#else +#define __NR__dl_mmap_real __NR_mmap +static inline _syscall1(void *, _dl_mmap_real, unsigned long *, buffer); + +static inline void * _dl_mmap(void * addr, unsigned long size, int prot, + int flags, int fd, unsigned long offset) +{ + unsigned long buffer[6]; + + buffer[0] = (unsigned long) addr; + buffer[1] = (unsigned long) size; + buffer[2] = (unsigned long) prot; + buffer[3] = (unsigned long) flags; + buffer[4] = (unsigned long) fd; + buffer[5] = (unsigned long) offset; + return (void *) _dl_mmap_real(buffer); +} +#endif + + #endif /* _LD_SYSCALL_H_ */ |