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-rw-r--r--include/asm-generic/vmlinux.lds.h22
-rw-r--r--include/asm-i386/unwind.h91
-rw-r--r--include/asm-x86_64/unwind.h96
-rw-r--r--include/linux/unwind.h63
4 files changed, 2 insertions, 270 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 7437ccaada77..1587121730c5 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -119,8 +119,6 @@
119 *(__ksymtab_strings) \ 119 *(__ksymtab_strings) \
120 } \ 120 } \
121 \ 121 \
122 EH_FRAME \
123 \
124 /* Built-in module parameters. */ \ 122 /* Built-in module parameters. */ \
125 __param : AT(ADDR(__param) - LOAD_OFFSET) { \ 123 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
126 VMLINUX_SYMBOL(__start___param) = .; \ 124 VMLINUX_SYMBOL(__start___param) = .; \
@@ -160,26 +158,6 @@
160 *(.kprobes.text) \ 158 *(.kprobes.text) \
161 VMLINUX_SYMBOL(__kprobes_text_end) = .; 159 VMLINUX_SYMBOL(__kprobes_text_end) = .;
162 160
163#ifdef CONFIG_STACK_UNWIND
164#define EH_FRAME \
165 /* Unwind data binary search table */ \
166 . = ALIGN(8); \
167 .eh_frame_hdr : AT(ADDR(.eh_frame_hdr) - LOAD_OFFSET) { \
168 VMLINUX_SYMBOL(__start_unwind_hdr) = .; \
169 *(.eh_frame_hdr) \
170 VMLINUX_SYMBOL(__end_unwind_hdr) = .; \
171 } \
172 /* Unwind data */ \
173 . = ALIGN(8); \
174 .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) { \
175 VMLINUX_SYMBOL(__start_unwind) = .; \
176 *(.eh_frame) \
177 VMLINUX_SYMBOL(__end_unwind) = .; \
178 }
179#else
180#define EH_FRAME
181#endif
182
183 /* DWARF debug sections. 161 /* DWARF debug sections.
184 Symbols in the DWARF debugging sections are relative to 162 Symbols in the DWARF debugging sections are relative to
185 the beginning of the section so we begin them at 0. */ 163 the beginning of the section so we begin them at 0. */
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 */
diff --git a/include/asm-x86_64/unwind.h b/include/asm-x86_64/unwind.h
index 2f6349e48717..02710f6a4560 100644
--- a/include/asm-x86_64/unwind.h
+++ b/include/asm-x86_64/unwind.h
@@ -1,100 +1,6 @@
1#ifndef _ASM_X86_64_UNWIND_H 1#ifndef _ASM_X86_64_UNWIND_H
2#define _ASM_X86_64_UNWIND_H 2#define _ASM_X86_64_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/ptrace.h>
14#include <asm/uaccess.h>
15#include <asm/vsyscall.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.rip
25#define UNW_SP(frame) (frame)->regs.rsp
26#ifdef CONFIG_FRAME_POINTER
27#define UNW_FP(frame) (frame)->regs.rbp
28#define FRAME_RETADDR_OFFSET 8
29#define FRAME_LINK_OFFSET 0
30#define STACK_BOTTOM(tsk) (((tsk)->thread.rsp0 - 1) & ~(THREAD_SIZE - 1))
31#define STACK_TOP(tsk) ((tsk)->thread.rsp0)
32#endif
33/* Might need to account for the special exception and interrupt handling
34 stacks here, since normally
35 EXCEPTION_STACK_ORDER < THREAD_ORDER < IRQSTACK_ORDER,
36 but the construct is needed only for getting across the stack switch to
37 the interrupt stack - thus considering the IRQ stack itself is unnecessary,
38 and the overhead of comparing against all exception handling stacks seems
39 not desirable. */
40#define STACK_LIMIT(ptr) (((ptr) - 1) & ~(THREAD_SIZE - 1))
41
42#define UNW_REGISTER_INFO \
43 PTREGS_INFO(rax), \
44 PTREGS_INFO(rdx), \
45 PTREGS_INFO(rcx), \
46 PTREGS_INFO(rbx), \
47 PTREGS_INFO(rsi), \
48 PTREGS_INFO(rdi), \
49 PTREGS_INFO(rbp), \
50 PTREGS_INFO(rsp), \
51 PTREGS_INFO(r8), \
52 PTREGS_INFO(r9), \
53 PTREGS_INFO(r10), \
54 PTREGS_INFO(r11), \
55 PTREGS_INFO(r12), \
56 PTREGS_INFO(r13), \
57 PTREGS_INFO(r14), \
58 PTREGS_INFO(r15), \
59 PTREGS_INFO(rip)
60
61#define UNW_DEFAULT_RA(raItem, dataAlign) \
62 ((raItem).where == Memory && \
63 !((raItem).value * (dataAlign) + 8))
64
65static inline void arch_unw_init_frame_info(struct unwind_frame_info *info,
66 /*const*/ struct pt_regs *regs)
67{
68 info->regs = *regs;
69}
70
71static inline void arch_unw_init_blocked(struct unwind_frame_info *info)
72{
73 extern const char thread_return[];
74
75 memset(&info->regs, 0, sizeof(info->regs));
76 info->regs.rip = (unsigned long)thread_return;
77 info->regs.cs = __KERNEL_CS;
78 __get_user(info->regs.rbp, (unsigned long *)info->task->thread.rsp);
79 info->regs.rsp = info->task->thread.rsp;
80 info->regs.ss = __KERNEL_DS;
81}
82
83extern int arch_unwind_init_running(struct unwind_frame_info *,
84 int (*callback)(struct unwind_frame_info *,
85 void *arg),
86 void *arg);
87
88static inline int arch_unw_user_mode(const struct unwind_frame_info *info)
89{
90 return user_mode(&info->regs)
91 || (long)info->regs.rip >= 0
92 || (info->regs.rip >= VSYSCALL_START && info->regs.rip < VSYSCALL_END)
93 || (long)info->regs.rsp >= 0;
94}
95
96#else
97
98#define UNW_PC(frame) ((void)(frame), 0UL) 4#define UNW_PC(frame) ((void)(frame), 0UL)
99#define UNW_SP(frame) ((void)(frame), 0UL) 5#define UNW_SP(frame) ((void)(frame), 0UL)
100 6
@@ -103,6 +9,4 @@ static inline int arch_unw_user_mode(const void *info)
103 return 0; 9 return 0;
104} 10}
105 11
106#endif
107
108#endif /* _ASM_X86_64_UNWIND_H */ 12#endif /* _ASM_X86_64_UNWIND_H */
diff --git a/include/linux/unwind.h b/include/linux/unwind.h
index 749928c161fb..7760860fa170 100644
--- a/include/linux/unwind.h
+++ b/include/linux/unwind.h
@@ -14,63 +14,6 @@
14 14
15struct module; 15struct module;
16 16
17#ifdef CONFIG_STACK_UNWIND
18
19#include <asm/unwind.h>
20
21#ifndef ARCH_UNWIND_SECTION_NAME
22#define ARCH_UNWIND_SECTION_NAME ".eh_frame"
23#endif
24
25/*
26 * Initialize unwind support.
27 */
28extern void unwind_init(void);
29extern void unwind_setup(void);
30
31#ifdef CONFIG_MODULES
32
33extern void *unwind_add_table(struct module *,
34 const void *table_start,
35 unsigned long table_size);
36
37extern void unwind_remove_table(void *handle, int init_only);
38
39#endif
40
41extern int unwind_init_frame_info(struct unwind_frame_info *,
42 struct task_struct *,
43 /*const*/ struct pt_regs *);
44
45/*
46 * Prepare to unwind a blocked task.
47 */
48extern int unwind_init_blocked(struct unwind_frame_info *,
49 struct task_struct *);
50
51/*
52 * Prepare to unwind the currently running thread.
53 */
54extern int unwind_init_running(struct unwind_frame_info *,
55 asmlinkage int (*callback)(struct unwind_frame_info *,
56 void *arg),
57 void *arg);
58
59/*
60 * Unwind to previous to frame. Returns 0 if successful, negative
61 * number in case of an error.
62 */
63extern int unwind(struct unwind_frame_info *);
64
65/*
66 * Unwind until the return pointer is in user-land (or until an error
67 * occurs). Returns 0 if successful, negative number in case of
68 * error.
69 */
70extern int unwind_to_user(struct unwind_frame_info *);
71
72#else
73
74struct unwind_frame_info {}; 17struct unwind_frame_info {};
75 18
76static inline void unwind_init(void) {} 19static inline void unwind_init(void) {}
@@ -85,12 +28,12 @@ static inline void *unwind_add_table(struct module *mod,
85 return NULL; 28 return NULL;
86} 29}
87 30
88#endif
89
90static inline void unwind_remove_table(void *handle, int init_only) 31static inline void unwind_remove_table(void *handle, int init_only)
91{ 32{
92} 33}
93 34
35#endif
36
94static inline int unwind_init_frame_info(struct unwind_frame_info *info, 37static inline int unwind_init_frame_info(struct unwind_frame_info *info,
95 struct task_struct *tsk, 38 struct task_struct *tsk,
96 const struct pt_regs *regs) 39 const struct pt_regs *regs)
@@ -122,6 +65,4 @@ static inline int unwind_to_user(struct unwind_frame_info *info)
122 return -ENOSYS; 65 return -ENOSYS;
123} 66}
124 67
125#endif
126
127#endif /* _LINUX_UNWIND_H */ 68#endif /* _LINUX_UNWIND_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-13 20:10:58 -0500