blob: e53dd0d900f5eed01b4a61b704604260161f0620 [file] [log] [blame]
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -07001/*
2 * Copyright (C) 2004-2006 Atmel Corporation
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#ifndef __ASM_AVR32_PTRACE_H
9#define __ASM_AVR32_PTRACE_H
10
11#define PTRACE_GETREGS 12
12#define PTRACE_SETREGS 13
13
14/*
15 * Status Register bits
16 */
Haavard Skinnemoendf679772007-11-27 18:59:32 +010017#define SR_H 0x20000000
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -070018#define SR_J 0x10000000
19#define SR_DM 0x08000000
20#define SR_D 0x04000000
21#define MODE_NMI 0x01c00000
22#define MODE_EXCEPTION 0x01800000
23#define MODE_INT3 0x01400000
24#define MODE_INT2 0x01000000
25#define MODE_INT1 0x00c00000
26#define MODE_INT0 0x00800000
27#define MODE_SUPERVISOR 0x00400000
28#define MODE_USER 0x00000000
29#define MODE_MASK 0x01c00000
30#define SR_EM 0x00200000
31#define SR_I3M 0x00100000
32#define SR_I2M 0x00080000
33#define SR_I1M 0x00040000
34#define SR_I0M 0x00020000
35#define SR_GM 0x00010000
36
Haavard Skinnemoendf679772007-11-27 18:59:32 +010037#define SR_H_BIT 29
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -070038#define SR_J_BIT 28
39#define SR_DM_BIT 27
40#define SR_D_BIT 26
41#define MODE_SHIFT 22
42#define SR_EM_BIT 21
43#define SR_I3M_BIT 20
44#define SR_I2M_BIT 19
45#define SR_I1M_BIT 18
46#define SR_I0M_BIT 17
47#define SR_GM_BIT 16
48
49/* The user-visible part */
50#define SR_L 0x00000020
51#define SR_Q 0x00000010
52#define SR_V 0x00000008
53#define SR_N 0x00000004
54#define SR_Z 0x00000002
55#define SR_C 0x00000001
56
57#define SR_L_BIT 5
58#define SR_Q_BIT 4
59#define SR_V_BIT 3
60#define SR_N_BIT 2
61#define SR_Z_BIT 1
62#define SR_C_BIT 0
63
64/*
65 * The order is defined by the stmts instruction. r0 is stored first,
66 * so it gets the highest address.
67 *
68 * Registers 0-12 are general-purpose registers (r12 is normally used for
69 * the function return value).
70 * Register 13 is the stack pointer
71 * Register 14 is the link register
72 * Register 15 is the program counter (retrieved from the RAR sysreg)
73 */
74#define FRAME_SIZE_FULL 72
75#define REG_R12_ORIG 68
76#define REG_R0 64
77#define REG_R1 60
78#define REG_R2 56
79#define REG_R3 52
80#define REG_R4 48
81#define REG_R5 44
82#define REG_R6 40
83#define REG_R7 36
84#define REG_R8 32
85#define REG_R9 28
86#define REG_R10 24
87#define REG_R11 20
88#define REG_R12 16
89#define REG_SP 12
90#define REG_LR 8
91
92#define FRAME_SIZE_MIN 8
93#define REG_PC 4
94#define REG_SR 0
95
96#ifndef __ASSEMBLY__
97struct pt_regs {
98 /* These are always saved */
99 unsigned long sr;
100 unsigned long pc;
101
102 /* These are sometimes saved */
103 unsigned long lr;
104 unsigned long sp;
105 unsigned long r12;
106 unsigned long r11;
107 unsigned long r10;
108 unsigned long r9;
109 unsigned long r8;
110 unsigned long r7;
111 unsigned long r6;
112 unsigned long r5;
113 unsigned long r4;
114 unsigned long r3;
115 unsigned long r2;
116 unsigned long r1;
117 unsigned long r0;
118
119 /* Only saved on system call */
120 unsigned long r12_orig;
121};
122
123#ifdef __KERNEL__
Haavard Skinnemoen13b54a52007-11-27 13:50:45 +0100124
125#include <asm/ocd.h>
126
Christoph Hellwig1d839312010-03-10 15:22:51 -0800127#define arch_has_single_step() (1)
128
Haavard Skinnemoen13b54a52007-11-27 13:50:45 +0100129#define arch_ptrace_attach(child) ocd_enable(child)
130
131#define user_mode(regs) (((regs)->sr & MODE_MASK) == MODE_USER)
132#define instruction_pointer(regs) ((regs)->pc)
133#define profile_pc(regs) instruction_pointer(regs)
134
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700135extern void show_regs (struct pt_regs *);
136
137static __inline__ int valid_user_regs(struct pt_regs *regs)
138{
139 /*
140 * Some of the Java bits might be acceptable if/when we
141 * implement some support for that stuff...
142 */
143 if ((regs->sr & 0xffff0000) == 0)
144 return 1;
145
146 /*
147 * Force status register flags to be sane and report this
148 * illegal behaviour...
149 */
150 regs->sr &= 0x0000ffff;
151 return 0;
152}
153
Haavard Skinnemoen5f97f7f2006-09-25 23:32:13 -0700154
155#endif /* __KERNEL__ */
156
157#endif /* ! __ASSEMBLY__ */
158
159#endif /* __ASM_AVR32_PTRACE_H */