72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* linux/arch/h8300/kernel/sys_h8300.c
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*
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* This file contains various random system calls that
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* have a non-standard calling sequence on the H8/300
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* platform.
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*/
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/smp.h>
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#include <linux/sem.h>
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#include <linux/msg.h>
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#include <linux/shm.h>
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#include <linux/stat.h>
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#include <linux/syscalls.h>
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#include <linux/mman.h>
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#include <linux/file.h>
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#include <linux/fs.h>
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#include <linux/ipc.h>
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#include <asm/setup.h>
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#include <asm/uaccess.h>
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#include <asm/cachectl.h>
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#include <asm/traps.h>
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#include <asm/unistd.h>
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/* sys_cacheflush -- no support. */
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asmlinkage int
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sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
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{
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return -EINVAL;
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}
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asmlinkage int sys_getpagesize(void)
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{
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return PAGE_SIZE;
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}
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#if defined(CONFIG_SYSCALL_PRINT)
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asmlinkage void syscall_print(void *dummy,...)
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{
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struct pt_regs *regs = (struct pt_regs *) ((unsigned char *)&dummy-4);
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printk("call %06lx:%ld 1:%08lx,2:%08lx,3:%08lx,ret:%08lx\n",
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((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0);
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}
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#endif
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/*
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* Do a system call from kernel instead of calling sys_execve so we
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* end up with proper pt_regs.
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*/
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int kernel_execve(const char *filename, char *const argv[], char *const envp[])
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{
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register long res __asm__("er0");
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register char *const *_c __asm__("er3") = envp;
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register char *const *_b __asm__("er2") = argv;
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register const char * _a __asm__("er1") = filename;
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__asm__ __volatile__ ("mov.l %1,er0\n\t"
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"trapa #0\n\t"
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: "=r" (res)
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: "g" (__NR_execve),
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"g" (_a),
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"g" (_b),
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"g" (_c)
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: "cc", "memory");
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return res;
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}
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