Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/h8300/kernel/sys_h8300.c |
| 3 | * |
| 4 | * This file contains various random system calls that |
| 5 | * have a non-standard calling sequence on the H8/300 |
| 6 | * platform. |
| 7 | */ |
| 8 | |
| 9 | #include <linux/errno.h> |
| 10 | #include <linux/sched.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/sem.h> |
| 14 | #include <linux/msg.h> |
| 15 | #include <linux/shm.h> |
| 16 | #include <linux/stat.h> |
| 17 | #include <linux/syscalls.h> |
| 18 | #include <linux/mman.h> |
| 19 | #include <linux/file.h> |
Yoshinori Sato | 0cd82ef | 2007-08-22 14:01:24 -0700 | [diff] [blame] | 20 | #include <linux/fs.h> |
Adrian Bunk | cba4fbb | 2007-10-16 23:29:24 -0700 | [diff] [blame] | 21 | #include <linux/ipc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
| 23 | #include <asm/setup.h> |
| 24 | #include <asm/uaccess.h> |
| 25 | #include <asm/cachectl.h> |
| 26 | #include <asm/traps.h> |
Arnd Bergmann | fe74290 | 2006-10-02 02:18:34 -0700 | [diff] [blame] | 27 | #include <asm/unistd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | /* sys_cacheflush -- no support. */ |
| 30 | asmlinkage int |
| 31 | sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) |
| 32 | { |
| 33 | return -EINVAL; |
| 34 | } |
| 35 | |
| 36 | asmlinkage int sys_getpagesize(void) |
| 37 | { |
| 38 | return PAGE_SIZE; |
| 39 | } |
| 40 | |
| 41 | #if defined(CONFIG_SYSCALL_PRINT) |
| 42 | asmlinkage void syscall_print(void *dummy,...) |
| 43 | { |
| 44 | struct pt_regs *regs = (struct pt_regs *) ((unsigned char *)&dummy-4); |
| 45 | printk("call %06lx:%ld 1:%08lx,2:%08lx,3:%08lx,ret:%08lx\n", |
| 46 | ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0); |
| 47 | } |
| 48 | #endif |
Arnd Bergmann | fe74290 | 2006-10-02 02:18:34 -0700 | [diff] [blame] | 49 | |
| 50 | /* |
| 51 | * Do a system call from kernel instead of calling sys_execve so we |
| 52 | * end up with proper pt_regs. |
| 53 | */ |
David Howells | d762746 | 2010-08-17 23:52:56 +0100 | [diff] [blame] | 54 | int kernel_execve(const char *filename, |
| 55 | const char *const argv[], |
| 56 | const char *const envp[]) |
Arnd Bergmann | fe74290 | 2006-10-02 02:18:34 -0700 | [diff] [blame] | 57 | { |
| 58 | register long res __asm__("er0"); |
David Howells | 1e72910 | 2010-08-31 16:52:21 +0100 | [diff] [blame] | 59 | register const char *const *_c __asm__("er3") = envp; |
| 60 | register const char *const *_b __asm__("er2") = argv; |
Arnd Bergmann | fe74290 | 2006-10-02 02:18:34 -0700 | [diff] [blame] | 61 | register const char * _a __asm__("er1") = filename; |
Arnd Bergmann | fe74290 | 2006-10-02 02:18:34 -0700 | [diff] [blame] | 62 | __asm__ __volatile__ ("mov.l %1,er0\n\t" |
| 63 | "trapa #0\n\t" |
| 64 | : "=r" (res) |
| 65 | : "g" (__NR_execve), |
| 66 | "g" (_a), |
| 67 | "g" (_b), |
| 68 | "g" (_c) |
| 69 | : "cc", "memory"); |
| 70 | return res; |
| 71 | } |
| 72 | |
| 73 | |