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sh: sys_sh consolidation for arch_get_unmapped_area().

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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2007-11-20 15:50:59 +09:00
parent e7e0a4b54a
commit bcb28e42be
5 changed files with 108 additions and 326 deletions
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100
arch/sh/kernel/sys_sh.c
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@@ -7,7 +7,6 @@
*
* Taken from i386 version.
*/
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
@@ -27,28 +26,7 @@
#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(fd);
if (!error) {
regs->regs[1] = fd[1];
return fd[0];
}
return error;
}
unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */
EXPORT_SYMBOL(shm_align_mask);
#ifdef CONFIG_MMU
@@ -140,7 +118,7 @@ full_search:
#endif /* CONFIG_MMU */
static inline long
do_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
do_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
unsigned long flags, int fd, unsigned long pgoff)
{
int error = -EBADF;
@@ -195,12 +173,13 @@ asmlinkage int sys_ipc(uint call, int first, int second,
if (call <= SEMCTL)
switch (call) {
case SEMOP:
return sys_semtimedop(first, (struct sembuf __user *)ptr,
return sys_semtimedop(first,
(struct sembuf __user *)ptr,
second, NULL);
case SEMTIMEDOP:
return sys_semtimedop(first, (struct sembuf __user *)ptr,
second,
(const struct timespec __user *)fifth);
return sys_semtimedop(first,
(struct sembuf __user *)ptr, second,
(const struct timespec __user *)fifth);
case SEMGET:
return sys_semget (first, second, third);
case SEMCTL: {
@@ -215,25 +194,28 @@ asmlinkage int sys_ipc(uint call, int first, int second,
return -EINVAL;
}
if (call <= MSGCTL)
if (call <= MSGCTL)
switch (call) {
case MSGSND:
return sys_msgsnd (first, (struct msgbuf __user *) ptr,
return sys_msgsnd (first, (struct msgbuf __user *) ptr,
second, third);
case MSGRCV:
switch (version) {
case 0: {
case 0:
{
struct ipc_kludge tmp;
if (!ptr)
return -EINVAL;
if (copy_from_user(&tmp,
(struct ipc_kludge __user *) ptr,
(struct ipc_kludge __user *) ptr,
sizeof (tmp)))
return -EFAULT;
return sys_msgrcv (first, tmp.msgp, second,
tmp.msgtyp, third);
}
}
default:
return sys_msgrcv (first,
(struct msgbuf __user *) ptr,
@@ -247,7 +229,7 @@ asmlinkage int sys_ipc(uint call, int first, int second,
default:
return -EINVAL;
}
if (call <= SHMCTL)
if (call <= SHMCTL)
switch (call) {
case SHMAT:
switch (version) {
@@ -265,7 +247,7 @@ asmlinkage int sys_ipc(uint call, int first, int second,
return do_shmat (first, (char __user *) ptr,
second, (ulong *) third);
}
case SHMDT:
case SHMDT:
return sys_shmdt ((char __user *)ptr);
case SHMGET:
return sys_shmget (first, second, third);
@@ -275,7 +257,7 @@ asmlinkage int sys_ipc(uint call, int first, int second,
default:
return -EINVAL;
}
return -EINVAL;
}
@@ -289,49 +271,3 @@ asmlinkage int sys_uname(struct old_utsname * name)
up_read(&uts_sem);
return err?-EFAULT:0;
}
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;
}