uapi/asm/ptrace.h

0001 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
0002 /*
0003  *  arch/arm/include/asm/ptrace.h
0004  *
0005  *  Copyright (C) 1996-2003 Russell King
0006  *
0007  * This program is free software; you can redistribute it and/or modify
0008  * it under the terms of the GNU General Public License version 2 as
0009  * published by the Free Software Foundation.
0010  */
0011 #ifndef _UAPI__ASM_ARM_PTRACE_H
0012 #define _UAPI__ASM_ARM_PTRACE_H
0013
0014 #include <asm/hwcap.h>
0015
0016 #define PTRACE_GETREGS      12
0017 #define PTRACE_SETREGS      13
0018 #define PTRACE_GETFPREGS    14
0019 #define PTRACE_SETFPREGS    15
0020 /* PTRACE_ATTACH is 16 */
0021 /* PTRACE_DETACH is 17 */
0022 #define PTRACE_GETWMMXREGS  18
0023 #define PTRACE_SETWMMXREGS  19
0024 /* 20 is unused */
0025 #define PTRACE_OLDSETOPTIONS    21
0026 #define PTRACE_GET_THREAD_AREA  22
0027 #define PTRACE_SET_SYSCALL  23
0028 /* PTRACE_SYSCALL is 24 */
0029 #define PTRACE_GETCRUNCHREGS    25 /* obsolete */
0030 #define PTRACE_SETCRUNCHREGS    26 /* obsolete */
0031 #define PTRACE_GETVFPREGS   27
0032 #define PTRACE_SETVFPREGS   28
0033 #define PTRACE_GETHBPREGS   29
0034 #define PTRACE_SETHBPREGS   30
0035 #define PTRACE_GETFDPIC     31
0036
0037 #define PTRACE_GETFDPIC_EXEC    0
0038 #define PTRACE_GETFDPIC_INTERP  1
0039
0040 /*
0041  * PSR bits
0042  * Note on V7M there is no mode contained in the PSR
0043  */
0044 #define USR26_MODE  0x00000000
0045 #define FIQ26_MODE  0x00000001
0046 #define IRQ26_MODE  0x00000002
0047 #define SVC26_MODE  0x00000003
0048 #if defined(__KERNEL__) && defined(CONFIG_CPU_V7M)
0049 /*
0050  * Use 0 here to get code right that creates a userspace
0051  * or kernel space thread.
0052  */
0053 #define USR_MODE    0x00000000
0054 #define SVC_MODE    0x00000000
0055 #else
0056 #define USR_MODE    0x00000010
0057 #define SVC_MODE    0x00000013
0058 #endif
0059 #define FIQ_MODE    0x00000011
0060 #define IRQ_MODE    0x00000012
0061 #define MON_MODE    0x00000016
0062 #define ABT_MODE    0x00000017
0063 #define HYP_MODE    0x0000001a
0064 #define UND_MODE    0x0000001b
0065 #define SYSTEM_MODE 0x0000001f
0066 #define MODE32_BIT  0x00000010
0067 #define MODE_MASK   0x0000001f
0068
0069 #define V4_PSR_T_BIT    0x00000020  /* >= V4T, but not V7M */
0070 #define V7M_PSR_T_BIT   0x01000000
0071 #if defined(__KERNEL__) && defined(CONFIG_CPU_V7M)
0072 #define PSR_T_BIT   V7M_PSR_T_BIT
0073 #else
0074 /* for compatibility */
0075 #define PSR_T_BIT   V4_PSR_T_BIT
0076 #endif
0077
0078 #define PSR_F_BIT   0x00000040  /* >= V4, but not V7M */
0079 #define PSR_I_BIT   0x00000080  /* >= V4, but not V7M */
0080 #define PSR_A_BIT   0x00000100  /* >= V6, but not V7M */
0081 #define PSR_E_BIT   0x00000200  /* >= V6, but not V7M */
0082 #define PSR_J_BIT   0x01000000  /* >= V5J, but not V7M */
0083 #define PSR_Q_BIT   0x08000000  /* >= V5E, including V7M */
0084 #define PSR_V_BIT   0x10000000
0085 #define PSR_C_BIT   0x20000000
0086 #define PSR_Z_BIT   0x40000000
0087 #define PSR_N_BIT   0x80000000
0088
0089 /*
0090  * Groups of PSR bits
0091  */
0092 #define PSR_f       0xff000000  /* Flags        */
0093 #define PSR_s       0x00ff0000  /* Status       */
0094 #define PSR_x       0x0000ff00  /* Extension        */
0095 #define PSR_c       0x000000ff  /* Control      */
0096
0097 /*
0098  * ARMv7 groups of PSR bits
0099  */
0100 #define APSR_MASK   0xf80f0000  /* N, Z, C, V, Q and GE flags */
0101 #define PSR_ISET_MASK   0x01000010  /* ISA state (J, T) mask */
0102 #define PSR_IT_MASK 0x0600fc00  /* If-Then execution state mask */
0103 #define PSR_ENDIAN_MASK 0x00000200  /* Endianness state mask */
0104
0105 /*
0106  * Default endianness state
0107  */
0108 #ifdef CONFIG_CPU_ENDIAN_BE8
0109 #define PSR_ENDSTATE    PSR_E_BIT
0110 #else
0111 #define PSR_ENDSTATE    0
0112 #endif
0113
0114 /*
0115  * These are 'magic' values for PTRACE_PEEKUSR that return info about where a
0116  * process is located in memory.
0117  */
0118 #define PT_TEXT_ADDR        0x10000
0119 #define PT_DATA_ADDR        0x10004
0120 #define PT_TEXT_END_ADDR    0x10008
0121
0122 #ifndef __ASSEMBLY__
0123
0124 /*
0125  * This struct defines the way the registers are stored on the
0126  * stack during a system call.  Note that sizeof(struct pt_regs)
0127  * has to be a multiple of 8.
0128  */
0129 #ifndef __KERNEL__
0130 struct pt_regs {
0131     long uregs[18];
0132 };
0133 #endif /* __KERNEL__ */
0134
0135 #define ARM_cpsr    uregs[16]
0136 #define ARM_pc      uregs[15]
0137 #define ARM_lr      uregs[14]
0138 #define ARM_sp      uregs[13]
0139 #define ARM_ip      uregs[12]
0140 #define ARM_fp      uregs[11]
0141 #define ARM_r10     uregs[10]
0142 #define ARM_r9      uregs[9]
0143 #define ARM_r8      uregs[8]
0144 #define ARM_r7      uregs[7]
0145 #define ARM_r6      uregs[6]
0146 #define ARM_r5      uregs[5]
0147 #define ARM_r4      uregs[4]
0148 #define ARM_r3      uregs[3]
0149 #define ARM_r2      uregs[2]
0150 #define ARM_r1      uregs[1]
0151 #define ARM_r0      uregs[0]
0152 #define ARM_ORIG_r0 uregs[17]
0153
0154 /*
0155  * The size of the user-visible VFP state as seen by PTRACE_GET/SETVFPREGS
0156  * and core dumps.
0157  */
0158 #define ARM_VFPREGS_SIZE ( 32 * 8 /*fpregs*/ + 4 /*fpscr*/ )
0159
0160
0161 #endif /* __ASSEMBLY__ */
0162
0163 #endif /* _UAPI__ASM_ARM_PTRACE_H */