1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
** S/390 version
** Copyright (C) 2001 IBM Poughkeepsie, IBM Corporation
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <sys/ptrace.h>
#include <asm/ptrace.h>
#include "main.h"
#if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR))
# define PTRACE_PEEKUSER PTRACE_PEEKUSR
#endif
#if (!defined(PTRACE_POKEUSER) && defined(PTRACE_POKEUSR))
# define PTRACE_POKEUSER PTRACE_POKEUSR
#endif
#ifdef __s390x__
#define PSW_MASK 0xffffffffffffffff
#define PSW_MASK31 0x7fffffff
#else
#define PSW_MASK 0x7fffffff
#endif
void *
get_instruction_pointer(Process *proc) {
long ret = ptrace(PTRACE_PEEKUSER, proc->pid, PT_PSWADDR, 0) & PSW_MASK;
#ifdef __s390x__
if (proc->mask_32bit)
ret &= PSW_MASK31;
#endif
return (void *)ret;
}
void
set_instruction_pointer(Process *proc, void *addr) {
#ifdef __s390x__
if (proc->mask_32bit)
addr = (void *)((long)addr & PSW_MASK31);
#endif
ptrace(PTRACE_POKEUSER, proc->pid, PT_PSWADDR, addr);
}
void *
get_stack_pointer(Process *proc) {
long ret = ptrace(PTRACE_PEEKUSER, proc->pid, PT_GPR15, 0) & PSW_MASK;
#ifdef __s390x__
if (proc->mask_32bit)
ret &= PSW_MASK31;
#endif
return (void *)ret;
}
void *
get_return_addr(Process *proc, void *stack_pointer) {
long ret = ptrace(PTRACE_PEEKUSER, proc->pid, PT_GPR14, 0) & PSW_MASK;
#ifdef __s390x__
if (proc->mask_32bit)
ret &= PSW_MASK31;
#endif
return (void *)ret;
}
|
