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