ba9950c820
Some changes that I sent in didn't make 2.6.12-rc4 for some reason. This adds them back. We have an x86_64 definition of TOP_ADDR a reimplementation of the x86_64 csum_partial_copy_from_user some syntax fixes in arch/um/kernel/ptrace.c removal of a CFLAGS definition in the x86_64 Makefile some include changes in the x86_64 ptrace.c and user-offsets.h a syntax fix in elf-x86_64.h Also moved an include in the i386 and x86_64 Makefiles to make the symlinks work, and some small fixes from Al Viro. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
183 lines
3.9 KiB
C
183 lines
3.9 KiB
C
/*
|
|
* Copyright 2003 PathScale, Inc.
|
|
*
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#define __FRAME_OFFSETS
|
|
#include <asm/ptrace.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/errno.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/elf.h>
|
|
|
|
/* XXX x86_64 */
|
|
unsigned long not_ss;
|
|
unsigned long not_ds;
|
|
unsigned long not_es;
|
|
|
|
#define SC_SS(r) (not_ss)
|
|
#define SC_DS(r) (not_ds)
|
|
#define SC_ES(r) (not_es)
|
|
|
|
/* determines which flags the user has access to. */
|
|
/* 1 = access 0 = no access */
|
|
#define FLAG_MASK 0x44dd5UL
|
|
|
|
int putreg(struct task_struct *child, int regno, unsigned long value)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
#ifdef TIF_IA32
|
|
/* Some code in the 64bit emulation may not be 64bit clean.
|
|
Don't take any chances. */
|
|
if (test_tsk_thread_flag(child, TIF_IA32))
|
|
value &= 0xffffffff;
|
|
#endif
|
|
switch (regno){
|
|
case FS:
|
|
case GS:
|
|
case DS:
|
|
case ES:
|
|
case SS:
|
|
case CS:
|
|
if (value && (value & 3) != 3)
|
|
return -EIO;
|
|
value &= 0xffff;
|
|
break;
|
|
|
|
case FS_BASE:
|
|
case GS_BASE:
|
|
if (!((value >> 48) == 0 || (value >> 48) == 0xffff))
|
|
return -EIO;
|
|
break;
|
|
|
|
case EFLAGS:
|
|
value &= FLAG_MASK;
|
|
tmp = PT_REGS_EFLAGS(&child->thread.regs) & ~FLAG_MASK;
|
|
value |= tmp;
|
|
break;
|
|
}
|
|
|
|
PT_REGS_SET(&child->thread.regs, regno, value);
|
|
return 0;
|
|
}
|
|
|
|
int poke_user(struct task_struct *child, long addr, long data)
|
|
{
|
|
if ((addr & 3) || addr < 0)
|
|
return -EIO;
|
|
|
|
if (addr < MAX_REG_OFFSET)
|
|
return putreg(child, addr, data);
|
|
|
|
#if 0 /* Need x86_64 debugregs handling */
|
|
else if((addr >= offsetof(struct user, u_debugreg[0])) &&
|
|
(addr <= offsetof(struct user, u_debugreg[7]))){
|
|
addr -= offsetof(struct user, u_debugreg[0]);
|
|
addr = addr >> 2;
|
|
if((addr == 4) || (addr == 5)) return -EIO;
|
|
child->thread.arch.debugregs[addr] = data;
|
|
return 0;
|
|
}
|
|
#endif
|
|
return -EIO;
|
|
}
|
|
|
|
unsigned long getreg(struct task_struct *child, int regno)
|
|
{
|
|
unsigned long retval = ~0UL;
|
|
switch (regno) {
|
|
case FS:
|
|
case GS:
|
|
case DS:
|
|
case ES:
|
|
case SS:
|
|
case CS:
|
|
retval = 0xffff;
|
|
/* fall through */
|
|
default:
|
|
retval &= PT_REG(&child->thread.regs, regno);
|
|
#ifdef TIF_IA32
|
|
if (test_tsk_thread_flag(child, TIF_IA32))
|
|
retval &= 0xffffffff;
|
|
#endif
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
int peek_user(struct task_struct *child, long addr, long data)
|
|
{
|
|
/* read the word at location addr in the USER area. */
|
|
unsigned long tmp;
|
|
|
|
if ((addr & 3) || addr < 0)
|
|
return -EIO;
|
|
|
|
tmp = 0; /* Default return condition */
|
|
if(addr < MAX_REG_OFFSET){
|
|
tmp = getreg(child, addr);
|
|
}
|
|
#if 0 /* Need x86_64 debugregs handling */
|
|
else if((addr >= offsetof(struct user, u_debugreg[0])) &&
|
|
(addr <= offsetof(struct user, u_debugreg[7]))){
|
|
addr -= offsetof(struct user, u_debugreg[0]);
|
|
addr = addr >> 2;
|
|
tmp = child->thread.arch.debugregs[addr];
|
|
}
|
|
#endif
|
|
return put_user(tmp, (unsigned long *) data);
|
|
}
|
|
|
|
void arch_switch(void)
|
|
{
|
|
/* XXX
|
|
printk("arch_switch\n");
|
|
*/
|
|
}
|
|
|
|
int is_syscall(unsigned long addr)
|
|
{
|
|
panic("is_syscall");
|
|
}
|
|
|
|
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu )
|
|
{
|
|
panic("dump_fpu");
|
|
return(1);
|
|
}
|
|
|
|
int get_fpregs(unsigned long buf, struct task_struct *child)
|
|
{
|
|
panic("get_fpregs");
|
|
return(0);
|
|
}
|
|
|
|
int set_fpregs(unsigned long buf, struct task_struct *child)
|
|
{
|
|
panic("set_fpregs");
|
|
return(0);
|
|
}
|
|
|
|
int get_fpxregs(unsigned long buf, struct task_struct *tsk)
|
|
{
|
|
panic("get_fpxregs");
|
|
return(0);
|
|
}
|
|
|
|
int set_fpxregs(unsigned long buf, struct task_struct *tsk)
|
|
{
|
|
panic("set_fxpregs");
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* Emacs will notice this stuff at the end of the file and automatically
|
|
* adjust the settings for this buffer only. This must remain at the end
|
|
* of the file.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-file-style: "linux"
|
|
* End:
|
|
*/
|