1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3 * arch/arm/include/asm/ptrace.h
4 *
5 * Copyright (C) 1996-2003 Russell King
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11 #ifndef _UAPI__ASM_ARM_PTRACE_H
12 #define _UAPI__ASM_ARM_PTRACE_H
13
14 #include <asm/hwcap.h>
15
16 #define PTRACE_GETREGS 12
17 #define PTRACE_SETREGS 13
18 #define PTRACE_GETFPREGS 14
19 #define PTRACE_SETFPREGS 15
20 /* PTRACE_ATTACH is 16 */
21 /* PTRACE_DETACH is 17 */
22 #define PTRACE_GETWMMXREGS 18
23 #define PTRACE_SETWMMXREGS 19
24 /* 20 is unused */
25 #define PTRACE_OLDSETOPTIONS 21
26 #define PTRACE_GET_THREAD_AREA 22
27 #define PTRACE_SET_SYSCALL 23
28 /* PTRACE_SYSCALL is 24 */
29 #define PTRACE_GETCRUNCHREGS 25 /* obsolete */
30 #define PTRACE_SETCRUNCHREGS 26 /* obsolete */
31 #define PTRACE_GETVFPREGS 27
32 #define PTRACE_SETVFPREGS 28
33 #define PTRACE_GETHBPREGS 29
34 #define PTRACE_SETHBPREGS 30
35 #define PTRACE_GETFDPIC 31
36
37 #define PTRACE_GETFDPIC_EXEC 0
38 #define PTRACE_GETFDPIC_INTERP 1
39
40 /*
41 * PSR bits
42 * Note on V7M there is no mode contained in the PSR
43 */
44 #define USR26_MODE 0x00000000
45 #define FIQ26_MODE 0x00000001
46 #define IRQ26_MODE 0x00000002
47 #define SVC26_MODE 0x00000003
48 #if defined(__KERNEL__) && defined(CONFIG_CPU_V7M)
49 /*
50 * Use 0 here to get code right that creates a userspace
51 * or kernel space thread.
52 */
53 #define USR_MODE 0x00000000
54 #define SVC_MODE 0x00000000
55 #else
56 #define USR_MODE 0x00000010
57 #define SVC_MODE 0x00000013
58 #endif
59 #define FIQ_MODE 0x00000011
60 #define IRQ_MODE 0x00000012
61 #define MON_MODE 0x00000016
62 #define ABT_MODE 0x00000017
63 #define HYP_MODE 0x0000001a
64 #define UND_MODE 0x0000001b
65 #define SYSTEM_MODE 0x0000001f
66 #define MODE32_BIT 0x00000010
67 #define MODE_MASK 0x0000001f
68
69 #define V4_PSR_T_BIT 0x00000020 /* >= V4T, but not V7M */
70 #define V7M_PSR_T_BIT 0x01000000
71 #if defined(__KERNEL__) && defined(CONFIG_CPU_V7M)
72 #define PSR_T_BIT V7M_PSR_T_BIT
73 #else
74 /* for compatibility */
75 #define PSR_T_BIT V4_PSR_T_BIT
76 #endif
77
78 #define PSR_F_BIT 0x00000040 /* >= V4, but not V7M */
79 #define PSR_I_BIT 0x00000080 /* >= V4, but not V7M */
80 #define PSR_A_BIT 0x00000100 /* >= V6, but not V7M */
81 #define PSR_E_BIT 0x00000200 /* >= V6, but not V7M */
82 #define PSR_J_BIT 0x01000000 /* >= V5J, but not V7M */
83 #define PSR_Q_BIT 0x08000000 /* >= V5E, including V7M */
84 #define PSR_V_BIT 0x10000000
85 #define PSR_C_BIT 0x20000000
86 #define PSR_Z_BIT 0x40000000
87 #define PSR_N_BIT 0x80000000
88
89 /*
90 * Groups of PSR bits
91 */
92 #define PSR_f 0xff000000 /* Flags */
93 #define PSR_s 0x00ff0000 /* Status */
94 #define PSR_x 0x0000ff00 /* Extension */
95 #define PSR_c 0x000000ff /* Control */
96
97 /*
98 * ARMv7 groups of PSR bits
99 */
100 #define APSR_MASK 0xf80f0000 /* N, Z, C, V, Q and GE flags */
101 #define PSR_ISET_MASK 0x01000010 /* ISA state (J, T) mask */
102 #define PSR_IT_MASK 0x0600fc00 /* If-Then execution state mask */
103 #define PSR_ENDIAN_MASK 0x00000200 /* Endianness state mask */
104
105 /*
106 * Default endianness state
107 */
108 #ifdef CONFIG_CPU_ENDIAN_BE8
109 #define PSR_ENDSTATE PSR_E_BIT
110 #else
111 #define PSR_ENDSTATE 0
112 #endif
113
114 /*
115 * These are 'magic' values for PTRACE_PEEKUSR that return info about where a
116 * process is located in memory.
117 */
118 #define PT_TEXT_ADDR 0x10000
119 #define PT_DATA_ADDR 0x10004
120 #define PT_TEXT_END_ADDR 0x10008
121
122 #ifndef __ASSEMBLY__
123
124 /*
125 * This struct defines the way the registers are stored on the
126 * stack during a system call. Note that sizeof(struct pt_regs)
127 * has to be a multiple of 8.
128 */
129 #ifndef __KERNEL__
130 struct pt_regs {
131 long uregs[18];
132 };
133 #endif /* __KERNEL__ */
134
135 #define ARM_cpsr uregs[16]
136 #define ARM_pc uregs[15]
137 #define ARM_lr uregs[14]
138 #define ARM_sp uregs[13]
139 #define ARM_ip uregs[12]
140 #define ARM_fp uregs[11]
141 #define ARM_r10 uregs[10]
142 #define ARM_r9 uregs[9]
143 #define ARM_r8 uregs[8]
144 #define ARM_r7 uregs[7]
145 #define ARM_r6 uregs[6]
146 #define ARM_r5 uregs[5]
147 #define ARM_r4 uregs[4]
148 #define ARM_r3 uregs[3]
149 #define ARM_r2 uregs[2]
150 #define ARM_r1 uregs[1]
151 #define ARM_r0 uregs[0]
152 #define ARM_ORIG_r0 uregs[17]
153
154 /*
155 * The size of the user-visible VFP state as seen by PTRACE_GET/SETVFPREGS
156 * and core dumps.
157 */
158 #define ARM_VFPREGS_SIZE ( 32 * 8 /*fpregs*/ + 4 /*fpscr*/ )
159
160
161 #endif /* __ASSEMBLY__ */
162
163 #endif /* _UAPI__ASM_ARM_PTRACE_H */
164
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