/*
- * arch/xtensa/kernel/syscall.c
+ * arch/xtensa/kernel/syscalls.c
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
#define DEBUG 0
-#include <linux/config.h>
#include <linux/linkage.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <asm/mman.h>
#include <asm/shmparam.h>
#include <asm/page.h>
-#include <asm/ipc.h>
extern void do_syscall_trace(void);
typedef int (*syscall_t)(void *a0,...);
/*
* Common code for old and new mmaps.
*/
-long sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
- unsigned long flags, unsigned long fd, unsigned long pgoff)
+long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot,
+ unsigned long flags, unsigned long fd, unsigned long pgoff)
{
int error = -EBADF;
struct file * file = NULL;
int sys_uname(struct old_utsname * name)
{
- if (name && !copy_to_user(name, &system_utsname, sizeof (*name)))
+ if (name && !copy_to_user(name, utsname(), sizeof (*name)))
return 0;
return -EFAULT;
}
regs->areg[2] = res;
do_syscall_trace();
}
+
+/*
+ * 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[])
+{
+ long __res;
+ asm volatile (
+ " mov a5, %2 \n"
+ " mov a4, %4 \n"
+ " mov a3, %3 \n"
+ " movi a2, %1 \n"
+ " syscall \n"
+ " mov %0, a2 \n"
+ : "=a" (__res)
+ : "i" (__NR_execve), "a" (filename), "a" (argv), "a" (envp)
+ : "a2", "a3", "a4", "a5");
+ return __res;
+}