blob: 620dd18197a0597144ffece20adc98f655d521dd [file] [log] [blame]
* Hexagon system calls
* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/linkage.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/syscalls.h>
#include <linux/unistd.h>
#include <asm/mman.h>
#include <asm/registers.h>
* System calls with architecture-specific wrappers.
* See signal.c for signal-related system call wrappers.
asmlinkage int sys_execve(char __user *ufilename,
const char __user *const __user *argv,
const char __user *const __user *envp)
struct pt_regs *pregs = current_thread_info()->regs;
char *filename;
int retval;
filename = getname(ufilename);
retval = PTR_ERR(filename);
if (IS_ERR(filename))
return retval;
retval = do_execve(filename, argv, envp, pregs);
return retval;
asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
unsigned long parent_tidp, unsigned long child_tidp)
struct pt_regs *pregs = current_thread_info()->regs;
if (!newsp)
newsp = pregs->SP;
return do_fork(clone_flags, newsp, pregs, 0, (int __user *)parent_tidp,
(int __user *)child_tidp);
* Do a system call from the kernel, so as to have a proper pt_regs
* and recycle the sys_execvpe infrustructure.
int kernel_execve(const char *filename,
const char *const argv[], const char *const envp[])
register unsigned long __a0 asm("r0") = (unsigned long) filename;
register unsigned long __a1 asm("r1") = (unsigned long) argv;
register unsigned long __a2 asm("r2") = (unsigned long) envp;
int retval;
__asm__ volatile(
" R6 = #%4;\n"
" trap0(#1);\n"
" %0 = R0;\n"
: "=r" (retval)
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (__NR_execve)
return retval;