linux/arch/sh/kernel/sys_sh32.c
Alexey Dobriyan 2bcd57ab61 headers: utsname.h redux
* remove asm/atomic.h inclusion from linux/utsname.h --
   not needed after kref conversion
 * remove linux/utsname.h inclusion from files which do not need it

NOTE: it looks like fs/binfmt_elf.c do not need utsname.h, however
due to some personality stuff it _is_ needed -- cowardly leave ELF-related
headers and files alone.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23 18:13:10 -07:00

85 lines
2.2 KiB
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/module.h>
#include <linux/fs.h>
#include <linux/ipc.h>
#include <asm/cacheflush.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include <asm/syscalls.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_sh_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 __user *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 __user *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;
}