ptrace.h

  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__
130struct 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 */