110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/*
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* Copyright 2003 PathScale, Inc.
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*
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* Licensed under the GPL
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*/
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#include "linux/linkage.h"
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#include "linux/slab.h"
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#include "linux/shm.h"
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#include "linux/utsname.h"
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#include "linux/personality.h"
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#include "asm/uaccess.h"
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#define __FRAME_OFFSETS
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#include "asm/ptrace.h"
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#include "asm/unistd.h"
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#include "asm/prctl.h" /* XXX This should get the constants from libc */
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#include "choose-mode.h"
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#include "kern.h"
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asmlinkage long sys_uname64(struct new_utsname __user * name)
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{
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int err;
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down_read(&uts_sem);
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err = copy_to_user(name, &system_utsname, sizeof (*name));
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up_read(&uts_sem);
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if (personality(current->personality) == PER_LINUX32)
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err |= copy_to_user(&name->machine, "i686", 5);
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return err ? -EFAULT : 0;
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}
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#ifdef CONFIG_MODE_TT
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extern long arch_prctl(int code, unsigned long addr);
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static long arch_prctl_tt(int code, unsigned long addr)
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{
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unsigned long tmp;
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long ret;
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switch(code){
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case ARCH_SET_GS:
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case ARCH_SET_FS:
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ret = arch_prctl(code, addr);
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break;
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case ARCH_GET_FS:
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case ARCH_GET_GS:
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ret = arch_prctl(code, (unsigned long) &tmp);
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if(!ret)
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ret = put_user(tmp, (long __user *)addr);
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return(ret);
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}
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#endif
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#ifdef CONFIG_MODE_SKAS
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/* XXX: Must also call arch_prctl in the host, beside saving the segment bases! */
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static long arch_prctl_skas(int code, unsigned long addr)
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{
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long ret = 0;
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switch(code){
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case ARCH_SET_FS:
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current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr;
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break;
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case ARCH_SET_GS:
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current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
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break;
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case ARCH_GET_FS:
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ret = put_user(current->thread.regs.regs.skas.
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regs[FS_BASE / sizeof(unsigned long)],
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(unsigned long __user *)addr);
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break;
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case ARCH_GET_GS:
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ret = put_user(current->thread.regs.regs.skas.
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regs[GS_BASE / sizeof(unsigned long)],
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(unsigned long __user *)addr);
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return(ret);
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}
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#endif
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long sys_arch_prctl(int code, unsigned long addr)
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{
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return(CHOOSE_MODE_PROC(arch_prctl_tt, arch_prctl_skas, code, addr));
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}
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long sys_clone(unsigned long clone_flags, unsigned long newsp,
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void __user *parent_tid, void __user *child_tid)
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{
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long ret;
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if (!newsp)
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newsp = UPT_SP(¤t->thread.regs.regs);
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current->thread.forking = 1;
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ret = do_fork(clone_flags, newsp, ¤t->thread.regs, 0, parent_tid,
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child_tid);
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current->thread.forking = 0;
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return(ret);
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}
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