1 #include <linux/errno.h> 2 #include <linux/sched.h> 3 #include <linux/mm.h> 4 #include <linux/smp.h> 5 #include <linux/sem.h> 6 #include <linux/msg.h> 7 #include <linux/shm.h> 8 #include <linux/stat.h> 9 #include <linux/syscalls.h> 10 #include <linux/mman.h> 11 #include <linux/file.h> 12 #include <linux/utsname.h> 13 #include <linux/module.h> 14 #include <linux/fs.h> 15 #include <linux/ipc.h> 16 #include <asm/cacheflush.h> 17 #include <asm/uaccess.h> 18 #include <asm/unistd.h> 19 #include <asm/syscalls.h> 20 21 /* 22 * sys_pipe() is the normal C calling standard for creating 23 * a pipe. It's not the way Unix traditionally does this, though. 24 */ 25 asmlinkage int sys_sh_pipe(unsigned long r4, unsigned long r5, 26 unsigned long r6, unsigned long r7, 27 struct pt_regs __regs) 28 { 29 struct pt_regs *regs = RELOC_HIDE(&__regs, 0); 30 int fd[2]; 31 int error; 32 33 error = do_pipe_flags(fd, 0); 34 if (!error) { 35 regs->regs[1] = fd[1]; 36 return fd[0]; 37 } 38 return error; 39 } 40 41 asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char __user *buf, 42 size_t count, long dummy, loff_t pos) 43 { 44 return sys_pread64(fd, buf, count, pos); 45 } 46 47 asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char __user *buf, 48 size_t count, long dummy, loff_t pos) 49 { 50 return sys_pwrite64(fd, buf, count, pos); 51 } 52 53 asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1, 54 u32 len0, u32 len1, int advice) 55 { 56 #ifdef __LITTLE_ENDIAN__ 57 return sys_fadvise64_64(fd, (u64)offset1 << 32 | offset0, 58 (u64)len1 << 32 | len0, advice); 59 #else 60 return sys_fadvise64_64(fd, (u64)offset0 << 32 | offset1, 61 (u64)len0 << 32 | len1, advice); 62 #endif 63 } 64 65 #if defined(CONFIG_CPU_SH2) || defined(CONFIG_CPU_SH2A) 66 #define SYSCALL_ARG3 "trapa #0x23" 67 #else 68 #define SYSCALL_ARG3 "trapa #0x13" 69 #endif 70 71 /* 72 * Do a system call from kernel instead of calling sys_execve so we 73 * end up with proper pt_regs. 74 */ 75 int kernel_execve(const char *filename, char *const argv[], char *const envp[]) 76 { 77 register long __sc0 __asm__ ("r3") = __NR_execve; 78 register long __sc4 __asm__ ("r4") = (long) filename; 79 register long __sc5 __asm__ ("r5") = (long) argv; 80 register long __sc6 __asm__ ("r6") = (long) envp; 81 __asm__ __volatile__ (SYSCALL_ARG3 : "=z" (__sc0) 82 : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6) 83 : "memory"); 84 return __sc0; 85 } 86