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Diffstat (limited to 'include/asm-i386/unwind.h')
-rw-r--r--include/asm-i386/unwind.h91
1 files changed, 0 insertions, 91 deletions
diff --git a/include/asm-i386/unwind.h b/include/asm-i386/unwind.h
index aa2c931e30db..43c70c3de2f9 100644
--- a/include/asm-i386/unwind.h
+++ b/include/asm-i386/unwind.h
@@ -1,95 +1,6 @@
1#ifndef _ASM_I386_UNWIND_H 1#ifndef _ASM_I386_UNWIND_H
2#define _ASM_I386_UNWIND_H 2#define _ASM_I386_UNWIND_H
3 3
4/*
5 * Copyright (C) 2002-2006 Novell, Inc.
6 * Jan Beulich <jbeulich@novell.com>
7 * This code is released under version 2 of the GNU GPL.
8 */
9
10#ifdef CONFIG_STACK_UNWIND
11
12#include <linux/sched.h>
13#include <asm/fixmap.h>
14#include <asm/ptrace.h>
15#include <asm/uaccess.h>
16
17struct unwind_frame_info
18{
19 struct pt_regs regs;
20 struct task_struct *task;
21 unsigned call_frame:1;
22};
23
24#define UNW_PC(frame) (frame)->regs.eip
25#define UNW_SP(frame) (frame)->regs.esp
26#ifdef CONFIG_FRAME_POINTER
27#define UNW_FP(frame) (frame)->regs.ebp
28#define FRAME_RETADDR_OFFSET 4
29#define FRAME_LINK_OFFSET 0
30#define STACK_BOTTOM(tsk) STACK_LIMIT((tsk)->thread.esp0)
31#define STACK_TOP(tsk) ((tsk)->thread.esp0)
32#else
33#define UNW_FP(frame) ((void)(frame), 0)
34#endif
35#define STACK_LIMIT(ptr) (((ptr) - 1) & ~(THREAD_SIZE - 1))
36
37#define UNW_REGISTER_INFO \
38 PTREGS_INFO(eax), \
39 PTREGS_INFO(ecx), \
40 PTREGS_INFO(edx), \
41 PTREGS_INFO(ebx), \
42 PTREGS_INFO(esp), \
43 PTREGS_INFO(ebp), \
44 PTREGS_INFO(esi), \
45 PTREGS_INFO(edi), \
46 PTREGS_INFO(eip)
47
48#define UNW_DEFAULT_RA(raItem, dataAlign) \
49 ((raItem).where == Memory && \
50 !((raItem).value * (dataAlign) + 4))
51
52static inline void arch_unw_init_frame_info(struct unwind_frame_info *info,
53 /*const*/ struct pt_regs *regs)
54{
55 if (user_mode_vm(regs))
56 info->regs = *regs;
57 else {
58 memcpy(&info->regs, regs, offsetof(struct pt_regs, esp));
59 info->regs.esp = (unsigned long)&regs->esp;
60 info->regs.xss = __KERNEL_DS;
61 }
62}
63
64static inline void arch_unw_init_blocked(struct unwind_frame_info *info)
65{
66 memset(&info->regs, 0, sizeof(info->regs));
67 info->regs.eip = info->task->thread.eip;
68 info->regs.xcs = __KERNEL_CS;
69 __get_user(info->regs.ebp, (long *)info->task->thread.esp);
70 info->regs.esp = info->task->thread.esp;
71 info->regs.xss = __KERNEL_DS;
72 info->regs.xds = __USER_DS;
73 info->regs.xes = __USER_DS;
74 info->regs.xgs = __KERNEL_PDA;
75}
76
77extern asmlinkage int arch_unwind_init_running(struct unwind_frame_info *,
78 asmlinkage int (*callback)(struct unwind_frame_info *,
79 void *arg),
80 void *arg);
81
82static inline int arch_unw_user_mode(/*const*/ struct unwind_frame_info *info)
83{
84 return user_mode_vm(&info->regs)
85 || info->regs.eip < PAGE_OFFSET
86 || (info->regs.eip >= __fix_to_virt(FIX_VDSO)
87 && info->regs.eip < __fix_to_virt(FIX_VDSO) + PAGE_SIZE)
88 || info->regs.esp < PAGE_OFFSET;
89}
90
91#else
92
93#define UNW_PC(frame) ((void)(frame), 0) 4#define UNW_PC(frame) ((void)(frame), 0)
94#define UNW_SP(frame) ((void)(frame), 0) 5#define UNW_SP(frame) ((void)(frame), 0)
95#define UNW_FP(frame) ((void)(frame), 0) 6#define UNW_FP(frame) ((void)(frame), 0)
@@ -99,6 +10,4 @@ static inline int arch_unw_user_mode(const void *info)
99 return 0; 10 return 0;
100} 11}
101 12
102#endif
103
104#endif /* _ASM_I386_UNWIND_H */ 13#endif /* _ASM_I386_UNWIND_H */