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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_sh32.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_sh32.c')
-rw-r--r-- | arch/sh/kernel/sys_sh32.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/sh/kernel/sys_sh32.c b/arch/sh/kernel/sys_sh32.c new file mode 100644 index 000000000000..125e493ead82 --- /dev/null +++ b/arch/sh/kernel/sys_sh32.c @@ -0,0 +1,84 @@ +#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(fd); + 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; +} |