73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
|
/*
|
||
|
|
* linux/arch/ppc64/kernel/ptrace-common.h
|
||
|
|
*
|
||
|
|
* Copyright (c) 2002 Stephen Rothwell, IBM Coproration
|
||
|
|
* Extracted from ptrace.c and ptrace32.c
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General
|
||
|
|
* Public License. See the file README.legal in the main directory of
|
||
|
|
* this archive for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _PPC64_PTRACE_COMMON_H
|
||
|
|
#define _PPC64_PTRACE_COMMON_H
|
||
|
|
/*
|
||
|
|
* Set of msr bits that gdb can change on behalf of a process.
|
||
|
|
*/
|
||
|
|
#define MSR_DEBUGCHANGE (MSR_FE0 | MSR_SE | MSR_BE | MSR_FE1)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get contents of register REGNO in task TASK.
|
||
|
|
*/
|
||
|
|
static inline unsigned long get_reg(struct task_struct *task, int regno)
|
||
|
|
{
|
||
|
|
unsigned long tmp = 0;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Put the correct FP bits in, they might be wrong as a result
|
||
|
|
* of our lazy FP restore.
|
||
|
|
*/
|
||
|
|
if (regno == PT_MSR) {
|
||
|
|
tmp = ((unsigned long *)task->thread.regs)[PT_MSR];
|
||
|
|
tmp |= task->thread.fpexc_mode;
|
||
|
|
} else if (regno < (sizeof(struct pt_regs) / sizeof(unsigned long))) {
|
||
|
|
tmp = ((unsigned long *)task->thread.regs)[regno];
|
||
|
|
}
|
||
|
|
|
||
|
|
return tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Write contents of register REGNO in task TASK.
|
||
|
|
*/
|
||
|
|
static inline int put_reg(struct task_struct *task, int regno,
|
||
|
|
unsigned long data)
|
||
|
|
{
|
||
|
|
if (regno < PT_SOFTE) {
|
||
|
|
if (regno == PT_MSR)
|
||
|
|
data = (data & MSR_DEBUGCHANGE)
|
||
|
|
| (task->thread.regs->msr & ~MSR_DEBUGCHANGE);
|
||
|
|
((unsigned long *)task->thread.regs)[regno] = data;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return -EIO;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void set_single_step(struct task_struct *task)
|
||
|
|
{
|
||
|
|
struct pt_regs *regs = task->thread.regs;
|
||
|
|
if (regs != NULL)
|
||
|
|
regs->msr |= MSR_SE;
|
||
|
|
set_ti_thread_flag(task->thread_info, TIF_SINGLESTEP);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void clear_single_step(struct task_struct *task)
|
||
|
|
{
|
||
|
|
struct pt_regs *regs = task->thread.regs;
|
||
|
|
if (regs != NULL)
|
||
|
|
regs->msr &= ~MSR_SE;
|
||
|
|
clear_ti_thread_flag(task->thread_info, TIF_SINGLESTEP);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _PPC64_PTRACE_COMMON_H */
|