mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-19 18:24:14 +08:00
680973edf1
Convert IA64 32-bit ptrace to use compat_sys_ptrace. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
164 lines
3.2 KiB
C
164 lines
3.2 KiB
C
/*
|
|
* Access to user system call parameters and results
|
|
*
|
|
* Copyright (C) 2008 Intel Corp. Shaohua Li <shaohua.li@intel.com>
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU General Public License v.2.
|
|
*
|
|
* See asm-generic/syscall.h for descriptions of what we must do here.
|
|
*/
|
|
|
|
#ifndef _ASM_SYSCALL_H
|
|
#define _ASM_SYSCALL_H 1
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/err.h>
|
|
|
|
static inline long syscall_get_nr(struct task_struct *task,
|
|
struct pt_regs *regs)
|
|
{
|
|
if ((long)regs->cr_ifs < 0) /* Not a syscall */
|
|
return -1;
|
|
|
|
#ifdef CONFIG_IA32_SUPPORT
|
|
if (IS_IA32_PROCESS(regs))
|
|
return regs->r1;
|
|
#endif
|
|
|
|
return regs->r15;
|
|
}
|
|
|
|
static inline void syscall_rollback(struct task_struct *task,
|
|
struct pt_regs *regs)
|
|
{
|
|
#ifdef CONFIG_IA32_SUPPORT
|
|
if (IS_IA32_PROCESS(regs))
|
|
regs->r8 = regs->r1;
|
|
#endif
|
|
|
|
/* do nothing */
|
|
}
|
|
|
|
static inline long syscall_get_error(struct task_struct *task,
|
|
struct pt_regs *regs)
|
|
{
|
|
#ifdef CONFIG_IA32_SUPPORT
|
|
if (IS_IA32_PROCESS(regs))
|
|
return regs->r8;
|
|
#endif
|
|
|
|
return regs->r10 == -1 ? regs->r8:0;
|
|
}
|
|
|
|
static inline long syscall_get_return_value(struct task_struct *task,
|
|
struct pt_regs *regs)
|
|
{
|
|
return regs->r8;
|
|
}
|
|
|
|
static inline void syscall_set_return_value(struct task_struct *task,
|
|
struct pt_regs *regs,
|
|
int error, long val)
|
|
{
|
|
#ifdef CONFIG_IA32_SUPPORT
|
|
if (IS_IA32_PROCESS(regs)) {
|
|
regs->r8 = (long) error ? error : val;
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if (error) {
|
|
/* error < 0, but ia64 uses > 0 return value */
|
|
regs->r8 = -error;
|
|
regs->r10 = -1;
|
|
} else {
|
|
regs->r8 = val;
|
|
regs->r10 = 0;
|
|
}
|
|
}
|
|
|
|
extern void ia64_syscall_get_set_arguments(struct task_struct *task,
|
|
struct pt_regs *regs, unsigned int i, unsigned int n,
|
|
unsigned long *args, int rw);
|
|
static inline void syscall_get_arguments(struct task_struct *task,
|
|
struct pt_regs *regs,
|
|
unsigned int i, unsigned int n,
|
|
unsigned long *args)
|
|
{
|
|
BUG_ON(i + n > 6);
|
|
|
|
#ifdef CONFIG_IA32_SUPPORT
|
|
if (IS_IA32_PROCESS(regs)) {
|
|
switch (i + n) {
|
|
case 6:
|
|
if (!n--) break;
|
|
*args++ = regs->r13;
|
|
case 5:
|
|
if (!n--) break;
|
|
*args++ = regs->r15;
|
|
case 4:
|
|
if (!n--) break;
|
|
*args++ = regs->r14;
|
|
case 3:
|
|
if (!n--) break;
|
|
*args++ = regs->r10;
|
|
case 2:
|
|
if (!n--) break;
|
|
*args++ = regs->r9;
|
|
case 1:
|
|
if (!n--) break;
|
|
*args++ = regs->r11;
|
|
case 0:
|
|
if (!n--) break;
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
|
|
return;
|
|
}
|
|
#endif
|
|
ia64_syscall_get_set_arguments(task, regs, i, n, args, 0);
|
|
}
|
|
|
|
static inline void syscall_set_arguments(struct task_struct *task,
|
|
struct pt_regs *regs,
|
|
unsigned int i, unsigned int n,
|
|
unsigned long *args)
|
|
{
|
|
BUG_ON(i + n > 6);
|
|
|
|
#ifdef CONFIG_IA32_SUPPORT
|
|
if (IS_IA32_PROCESS(regs)) {
|
|
switch (i + n) {
|
|
case 6:
|
|
if (!n--) break;
|
|
regs->r13 = *args++;
|
|
case 5:
|
|
if (!n--) break;
|
|
regs->r15 = *args++;
|
|
case 4:
|
|
if (!n--) break;
|
|
regs->r14 = *args++;
|
|
case 3:
|
|
if (!n--) break;
|
|
regs->r10 = *args++;
|
|
case 2:
|
|
if (!n--) break;
|
|
regs->r9 = *args++;
|
|
case 1:
|
|
if (!n--) break;
|
|
regs->r11 = *args++;
|
|
case 0:
|
|
if (!n--) break;
|
|
}
|
|
|
|
return;
|
|
}
|
|
#endif
|
|
ia64_syscall_get_set_arguments(task, regs, i, n, args, 1);
|
|
}
|
|
#endif /* _ASM_SYSCALL_H */
|