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/*
* 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/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;
}
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;
}
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:
*/
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