projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 854a0d95 VG |
1 | /* |
| 2 | * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef _ASM_ARC_UNWIND_H | |
| 10 | #define _ASM_ARC_UNWIND_H | |
| 11 | ||
| 12 | #ifdef CONFIG_ARC_DW2_UNWIND | |
| 13 | ||
| 14 | #include <linux/sched.h> | |
| 15 | ||
| 16 | struct arc700_regs { | |
| 17 | unsigned long r0; | |
| 18 | unsigned long r1; | |
| 19 | unsigned long r2; | |
| 20 | unsigned long r3; | |
| 21 | unsigned long r4; | |
| 22 | unsigned long r5; | |
| 23 | unsigned long r6; | |
| 24 | unsigned long r7; | |
| 25 | unsigned long r8; | |
| 26 | unsigned long r9; | |
| 27 | unsigned long r10; | |
| 28 | unsigned long r11; | |
| 29 | unsigned long r12; | |
| 30 | unsigned long r13; | |
| 31 | unsigned long r14; | |
| 32 | unsigned long r15; | |
| 33 | unsigned long r16; | |
| 34 | unsigned long r17; | |
| 35 | unsigned long r18; | |
| 36 | unsigned long r19; | |
| 37 | unsigned long r20; | |
| 38 | unsigned long r21; | |
| 39 | unsigned long r22; | |
| 40 | unsigned long r23; | |
| 41 | unsigned long r24; | |
| 42 | unsigned long r25; | |
| 43 | unsigned long r26; | |
| 44 | unsigned long r27; /* fp */ | |
| 45 | unsigned long r28; /* sp */ | |
| 46 | unsigned long r29; | |
| 47 | unsigned long r30; | |
| 48 | unsigned long r31; /* blink */ | |
| 49 | unsigned long r63; /* pc */ | |
| 50 | }; | |
| 51 | ||
| 52 | struct unwind_frame_info { | |
| 53 | struct arc700_regs regs; | |
| 54 | struct task_struct *task; | |
| 55 | unsigned call_frame:1; | |
| 56 | }; | |
| 57 | ||
| 58 | #define UNW_PC(frame) ((frame)->regs.r63) | |
| 59 | #define UNW_SP(frame) ((frame)->regs.r28) | |
| 60 | #define UNW_BLINK(frame) ((frame)->regs.r31) | |
| 61 | ||
| 62 | /* Rajesh FIXME */ | |
| 63 | #ifdef CONFIG_FRAME_POINTER | |
| 64 | #define UNW_FP(frame) ((frame)->regs.r27) | |
| 65 | #define FRAME_RETADDR_OFFSET 4 | |
| 66 | #define FRAME_LINK_OFFSET 0 | |
| 67 | #define STACK_BOTTOM_UNW(tsk) STACK_LIMIT((tsk)->thread.ksp) | |
| 68 | #define STACK_TOP_UNW(tsk) ((tsk)->thread.ksp) | |
| 69 | #else | |
| 70 | #define UNW_FP(frame) ((void)(frame), 0) | |
| 71 | #endif | |
| 72 | ||
| 73 | #define STACK_LIMIT(ptr) (((ptr) - 1) & ~(THREAD_SIZE - 1)) | |
| 74 | ||
| 75 | #define UNW_REGISTER_INFO \ | |
| 76 | PTREGS_INFO(r0), \ | |
| 77 | PTREGS_INFO(r1), \ | |
| 78 | PTREGS_INFO(r2), \ | |
| 79 | PTREGS_INFO(r3), \ | |
| 80 | PTREGS_INFO(r4), \ | |
| 81 | PTREGS_INFO(r5), \ | |
| 82 | PTREGS_INFO(r6), \ | |
| 83 | PTREGS_INFO(r7), \ | |
| 84 | PTREGS_INFO(r8), \ | |
| 85 | PTREGS_INFO(r9), \ | |
| 86 | PTREGS_INFO(r10), \ | |
| 87 | PTREGS_INFO(r11), \ | |
| 88 | PTREGS_INFO(r12), \ | |
| 89 | PTREGS_INFO(r13), \ | |
| 90 | PTREGS_INFO(r14), \ | |
| 91 | PTREGS_INFO(r15), \ | |
| 92 | PTREGS_INFO(r16), \ | |
| 93 | PTREGS_INFO(r17), \ | |
| 94 | PTREGS_INFO(r18), \ | |
| 95 | PTREGS_INFO(r19), \ | |
| 96 | PTREGS_INFO(r20), \ | |
| 97 | PTREGS_INFO(r21), \ | |
| 98 | PTREGS_INFO(r22), \ | |
| 99 | PTREGS_INFO(r23), \ | |
| 100 | PTREGS_INFO(r24), \ | |
| 101 | PTREGS_INFO(r25), \ | |
| 102 | PTREGS_INFO(r26), \ | |
| 103 | PTREGS_INFO(r27), \ | |
| 104 | PTREGS_INFO(r28), \ | |
| 105 | PTREGS_INFO(r29), \ | |
| 106 | PTREGS_INFO(r30), \ | |
| 107 | PTREGS_INFO(r31), \ | |
| 108 | PTREGS_INFO(r63) | |
| 109 | ||
| 110 | #define UNW_DEFAULT_RA(raItem, dataAlign) \ | |
| 111 | ((raItem).where == Memory && !((raItem).value * (dataAlign) + 4)) | |
| 112 | ||
| 113 | extern int arc_unwind(struct unwind_frame_info *frame); | |
| 114 | extern void arc_unwind_init(void); | |
| 854a0d95 VG |
115 | extern void *unwind_add_table(struct module *module, const void *table_start, |
| 116 | unsigned long table_size); | |
| 117 | extern void unwind_remove_table(void *handle, int init_only); | |
| 118 | ||
| 119 | static inline int | |
| 120 | arch_unwind_init_running(struct unwind_frame_info *info, | |
| 121 | int (*callback) (struct unwind_frame_info *info, | |
| 122 | void *arg), | |
| 123 | void *arg) | |
| 124 | { | |
| 125 | return 0; | |
| 126 | } | |
| 127 | ||
| 128 | static inline int arch_unw_user_mode(const struct unwind_frame_info *info) | |
| 129 | { | |
| 130 | return 0; | |
| 131 | } | |
| 132 | ||
| 133 | static inline void arch_unw_init_blocked(struct unwind_frame_info *info) | |
| 134 | { | |
| 135 | return; | |
| 136 | } | |
| 137 | ||
| 138 | static inline void arch_unw_init_frame_info(struct unwind_frame_info *info, | |
| 139 | struct pt_regs *regs) | |
| 140 | { | |
| 141 | return; | |
| 142 | } | |
| 143 | ||
| 144 | #else | |
| 145 | ||
| 146 | #define UNW_PC(frame) ((void)(frame), 0) | |
| 147 | #define UNW_SP(frame) ((void)(frame), 0) | |
| 148 | #define UNW_FP(frame) ((void)(frame), 0) | |
| 149 | ||
| 150 | static inline void arc_unwind_init(void) | |
| 151 | { | |
| 152 | } | |
| 153 | ||
| 854a0d95 VG |
154 | #define unwind_add_table(a, b, c) |
| 155 | #define unwind_remove_table(a, b) | |
| 156 | ||
| 157 | #endif /* CONFIG_ARC_DW2_UNWIND */ | |
| 158 | ||
| 159 | #endif /* _ASM_ARC_UNWIND_H */ |