forked from Minki/linux
37185b3324
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include <linux/sched.h>
|
|
#include "asm/ptrace.h"
|
|
|
|
int putreg(struct task_struct *child, unsigned long regno,
|
|
unsigned long value)
|
|
{
|
|
child->thread.process_regs.regs[regno >> 2] = 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);
|
|
|
|
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;
|
|
}
|
|
return -EIO;
|
|
}
|
|
|
|
unsigned long getreg(struct task_struct *child, unsigned long regno)
|
|
{
|
|
unsigned long retval = ~0UL;
|
|
|
|
retval &= child->thread.process_regs.regs[regno >> 2];
|
|
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);
|
|
}
|
|
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];
|
|
}
|
|
return put_user(tmp, (unsigned long *) data);
|
|
}
|
|
|