1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * Based on arch/arm/include/asm/ptrace.h 4 * 5 * Copyright (C) 1996-2003 Russell King 6 * Copyright (C) 2012 ARM Ltd. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 #ifndef _UAPI__ASM_PTRACE_H 21 #define _UAPI__ASM_PTRACE_H 22 23 #include <linux/types.h> 24 25 #include <asm/hwcap.h> 26 #include <asm/sigcontext.h> 27 28 29 /* 30 * PSR bits 31 */ 32 #define PSR_MODE_EL0t 0x00000000 33 #define PSR_MODE_EL1t 0x00000004 34 #define PSR_MODE_EL1h 0x00000005 35 #define PSR_MODE_EL2t 0x00000008 36 #define PSR_MODE_EL2h 0x00000009 37 #define PSR_MODE_EL3t 0x0000000c 38 #define PSR_MODE_EL3h 0x0000000d 39 #define PSR_MODE_MASK 0x0000000f 40 41 /* AArch32 CPSR bits */ 42 #define PSR_MODE32_BIT 0x00000010 43 44 /* AArch64 SPSR bits */ 45 #define PSR_F_BIT 0x00000040 46 #define PSR_I_BIT 0x00000080 47 #define PSR_A_BIT 0x00000100 48 #define PSR_D_BIT 0x00000200 49 #define PSR_PAN_BIT 0x00400000 50 #define PSR_UAO_BIT 0x00800000 51 #define PSR_V_BIT 0x10000000 52 #define PSR_C_BIT 0x20000000 53 #define PSR_Z_BIT 0x40000000 54 #define PSR_N_BIT 0x80000000 55 56 /* 57 * Groups of PSR bits 58 */ 59 #define PSR_f 0xff000000 /* Flags */ 60 #define PSR_s 0x00ff0000 /* Status */ 61 #define PSR_x 0x0000ff00 /* Extension */ 62 #define PSR_c 0x000000ff /* Control */ 63 64 65 #ifndef __ASSEMBLY__ 66 67 #include <linux/prctl.h> 68 69 /* 70 * User structures for general purpose, floating point and debug registers. 71 */ 72 struct user_pt_regs { 73 __u64 regs[31]; 74 __u64 sp; 75 __u64 pc; 76 __u64 pstate; 77 }; 78 79 struct user_fpsimd_state { 80 __uint128_t vregs[32]; 81 __u32 fpsr; 82 __u32 fpcr; 83 __u32 __reserved[2]; 84 }; 85 86 struct user_hwdebug_state { 87 __u32 dbg_info; 88 __u32 pad; 89 struct { 90 __u64 addr; 91 __u32 ctrl; 92 __u32 pad; 93 } dbg_regs[16]; 94 }; 95 96 /* SVE/FP/SIMD state (NT_ARM_SVE) */ 97 98 struct user_sve_header { 99 __u32 size; /* total meaningful regset content in bytes */ 100 __u32 max_size; /* maxmium possible size for this thread */ 101 __u16 vl; /* current vector length */ 102 __u16 max_vl; /* maximum possible vector length */ 103 __u16 flags; 104 __u16 __reserved; 105 }; 106 107 /* Definitions for user_sve_header.flags: */ 108 #define SVE_PT_REGS_MASK (1 << 0) 109 110 #define SVE_PT_REGS_FPSIMD 0 111 #define SVE_PT_REGS_SVE SVE_PT_REGS_MASK 112 113 /* 114 * Common SVE_PT_* flags: 115 * These must be kept in sync with prctl interface in <linux/ptrace.h> 116 */ 117 #define SVE_PT_VL_INHERIT (PR_SVE_VL_INHERIT >> 16) 118 #define SVE_PT_VL_ONEXEC (PR_SVE_SET_VL_ONEXEC >> 16) 119 120 121 /* 122 * The remainder of the SVE state follows struct user_sve_header. The 123 * total size of the SVE state (including header) depends on the 124 * metadata in the header: SVE_PT_SIZE(vq, flags) gives the total size 125 * of the state in bytes, including the header. 126 * 127 * Refer to <asm/sigcontext.h> for details of how to pass the correct 128 * "vq" argument to these macros. 129 */ 130 131 /* Offset from the start of struct user_sve_header to the register data */ 132 #define SVE_PT_REGS_OFFSET \ 133 ((sizeof(struct sve_context) + (SVE_VQ_BYTES - 1)) \ 134 / SVE_VQ_BYTES * SVE_VQ_BYTES) 135 136 /* 137 * The register data content and layout depends on the value of the 138 * flags field. 139 */ 140 141 /* 142 * (flags & SVE_PT_REGS_MASK) == SVE_PT_REGS_FPSIMD case: 143 * 144 * The payload starts at offset SVE_PT_FPSIMD_OFFSET, and is of type 145 * struct user_fpsimd_state. Additional data might be appended in the 146 * future: use SVE_PT_FPSIMD_SIZE(vq, flags) to compute the total size. 147 * SVE_PT_FPSIMD_SIZE(vq, flags) will never be less than 148 * sizeof(struct user_fpsimd_state). 149 */ 150 151 #define SVE_PT_FPSIMD_OFFSET SVE_PT_REGS_OFFSET 152 153 #define SVE_PT_FPSIMD_SIZE(vq, flags) (sizeof(struct user_fpsimd_state)) 154 155 /* 156 * (flags & SVE_PT_REGS_MASK) == SVE_PT_REGS_SVE case: 157 * 158 * The payload starts at offset SVE_PT_SVE_OFFSET, and is of size 159 * SVE_PT_SVE_SIZE(vq, flags). 160 * 161 * Additional macros describe the contents and layout of the payload. 162 * For each, SVE_PT_SVE_x_OFFSET(args) is the start offset relative to 163 * the start of struct user_sve_header, and SVE_PT_SVE_x_SIZE(args) is 164 * the size in bytes: 165 * 166 * x type description 167 * - ---- ----------- 168 * ZREGS \ 169 * ZREG | 170 * PREGS | refer to <asm/sigcontext.h> 171 * PREG | 172 * FFR / 173 * 174 * FPSR uint32_t FPSR 175 * FPCR uint32_t FPCR 176 * 177 * Additional data might be appended in the future. 178 */ 179 180 #define SVE_PT_SVE_ZREG_SIZE(vq) SVE_SIG_ZREG_SIZE(vq) 181 #define SVE_PT_SVE_PREG_SIZE(vq) SVE_SIG_PREG_SIZE(vq) 182 #define SVE_PT_SVE_FFR_SIZE(vq) SVE_SIG_FFR_SIZE(vq) 183 #define SVE_PT_SVE_FPSR_SIZE sizeof(__u32) 184 #define SVE_PT_SVE_FPCR_SIZE sizeof(__u32) 185 186 #define __SVE_SIG_TO_PT(offset) \ 187 ((offset) - SVE_SIG_REGS_OFFSET + SVE_PT_REGS_OFFSET) 188 189 #define SVE_PT_SVE_OFFSET SVE_PT_REGS_OFFSET 190 191 #define SVE_PT_SVE_ZREGS_OFFSET \ 192 __SVE_SIG_TO_PT(SVE_SIG_ZREGS_OFFSET) 193 #define SVE_PT_SVE_ZREG_OFFSET(vq, n) \ 194 __SVE_SIG_TO_PT(SVE_SIG_ZREG_OFFSET(vq, n)) 195 #define SVE_PT_SVE_ZREGS_SIZE(vq) \ 196 (SVE_PT_SVE_ZREG_OFFSET(vq, SVE_NUM_ZREGS) - SVE_PT_SVE_ZREGS_OFFSET) 197 198 #define SVE_PT_SVE_PREGS_OFFSET(vq) \ 199 __SVE_SIG_TO_PT(SVE_SIG_PREGS_OFFSET(vq)) 200 #define SVE_PT_SVE_PREG_OFFSET(vq, n) \ 201 __SVE_SIG_TO_PT(SVE_SIG_PREG_OFFSET(vq, n)) 202 #define SVE_PT_SVE_PREGS_SIZE(vq) \ 203 (SVE_PT_SVE_PREG_OFFSET(vq, SVE_NUM_PREGS) - \ 204 SVE_PT_SVE_PREGS_OFFSET(vq)) 205 206 #define SVE_PT_SVE_FFR_OFFSET(vq) \ 207 __SVE_SIG_TO_PT(SVE_SIG_FFR_OFFSET(vq)) 208 209 #define SVE_PT_SVE_FPSR_OFFSET(vq) \ 210 ((SVE_PT_SVE_FFR_OFFSET(vq) + SVE_PT_SVE_FFR_SIZE(vq) + \ 211 (SVE_VQ_BYTES - 1)) \ 212 / SVE_VQ_BYTES * SVE_VQ_BYTES) 213 #define SVE_PT_SVE_FPCR_OFFSET(vq) \ 214 (SVE_PT_SVE_FPSR_OFFSET(vq) + SVE_PT_SVE_FPSR_SIZE) 215 216 /* 217 * Any future extension appended after FPCR must be aligned to the next 218 * 128-bit boundary. 219 */ 220 221 #define SVE_PT_SVE_SIZE(vq, flags) \ 222 ((SVE_PT_SVE_FPCR_OFFSET(vq) + SVE_PT_SVE_FPCR_SIZE \ 223 - SVE_PT_SVE_OFFSET + (SVE_VQ_BYTES - 1)) \ 224 / SVE_VQ_BYTES * SVE_VQ_BYTES) 225 226 #define SVE_PT_SIZE(vq, flags) \ 227 (((flags) & SVE_PT_REGS_MASK) == SVE_PT_REGS_SVE ? \ 228 SVE_PT_SVE_OFFSET + SVE_PT_SVE_SIZE(vq, flags) \ 229 : SVE_PT_FPSIMD_OFFSET + SVE_PT_FPSIMD_SIZE(vq, flags)) 230 231 #endif /* __ASSEMBLY__ */ 232 233 #endif /* _UAPI__ASM_PTRACE_H */ 234