Logo Search packages:      
Sourcecode: linux version File versions

sys_sh32.c

#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/stat.h>
#include <linux/syscalls.h>
#include <linux/mman.h>
#include <linux/file.h>
#include <linux/utsname.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/ipc.h>
#include <asm/cacheflush.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>

/*
 * sys_pipe() is the normal C calling standard for creating
 * a pipe. It's not the way Unix traditionally does this, though.
 */
asmlinkage int sys_pipe(unsigned long r4, unsigned long r5,
      unsigned long r6, unsigned long r7,
      struct pt_regs __regs)
{
      struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
      int fd[2];
      int error;

      error = do_pipe_flags(fd, 0);
      if (!error) {
            regs->regs[1] = fd[1];
            return fd[0];
      }
      return error;
}

asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char * buf,
                       size_t count, long dummy, loff_t pos)
{
      return sys_pread64(fd, buf, count, pos);
}

asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char * buf,
                        size_t count, long dummy, loff_t pos)
{
      return sys_pwrite64(fd, buf, count, pos);
}

asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1,
                        u32 len0, u32 len1, int advice)
{
#ifdef  __LITTLE_ENDIAN__
      return sys_fadvise64_64(fd, (u64)offset1 << 32 | offset0,
                        (u64)len1 << 32 | len0, advice);
#else
      return sys_fadvise64_64(fd, (u64)offset0 << 32 | offset1,
                        (u64)len0 << 32 | len1, advice);
#endif
}

#if defined(CONFIG_CPU_SH2) || defined(CONFIG_CPU_SH2A)
#define SYSCALL_ARG3    "trapa #0x23"
#else
#define SYSCALL_ARG3    "trapa #0x13"
#endif

/*
 * Do a system call from kernel instead of calling sys_execve so we
 * end up with proper pt_regs.
 */
int kernel_execve(const char *filename, char *const argv[], char *const envp[])
{
      register long __sc0 __asm__ ("r3") = __NR_execve;
      register long __sc4 __asm__ ("r4") = (long) filename;
      register long __sc5 __asm__ ("r5") = (long) argv;
      register long __sc6 __asm__ ("r6") = (long) envp;
      __asm__ __volatile__ (SYSCALL_ARG3 : "=z" (__sc0)
                  : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6)
                  : "memory");
      return __sc0;
}

Generated by  Doxygen 1.6.0   Back to index