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author | Paul Mundt <lethal@linux-sh.org> | 2007-11-20 07:50:59 +0100 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 05:18:49 +0100 |
commit | bcb28e42be8c1cce6cc523c1b656980011464016 (patch) | |
tree | 3c951c59a88eac348a34fb2b714dd255166a2a47 /arch/sh/kernel/sys_sh.c | |
parent | sh: Share the ELF dump_task interfaces. (diff) | |
download | linux-bcb28e42be8c1cce6cc523c1b656980011464016.tar.xz linux-bcb28e42be8c1cce6cc523c1b656980011464016.zip |
sh: sys_sh consolidation for arch_get_unmapped_area().
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/sys_sh.c')
-rw-r--r-- | arch/sh/kernel/sys_sh.c | 100 |
1 files changed, 18 insertions, 82 deletions
diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c index d545a686a201..59cd2859ce9b 100644 --- a/arch/sh/kernel/sys_sh.c +++ b/arch/sh/kernel/sys_sh.c @@ -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; -} |