1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _SYS_UCONTEXT_H_ 30 #define _SYS_UCONTEXT_H_ 31 32 #include <sys/cdefs.h> 33 34 #include <signal.h> 35 #include <sys/user.h> 36 37 __BEGIN_DECLS 38 39 #if defined(__arm__) 40 41 enum { 42 REG_R0 = 0, 43 #define REG_R0 REG_R0 44 REG_R1, 45 #define REG_R1 REG_R1 46 REG_R2, 47 #define REG_R2 REG_R2 48 REG_R3, 49 #define REG_R3 REG_R3 50 REG_R4, 51 #define REG_R4 REG_R4 52 REG_R5, 53 #define REG_R5 REG_R5 54 REG_R6, 55 #define REG_R6 REG_R6 56 REG_R7, 57 #define REG_R7 REG_R7 58 REG_R8, 59 #define REG_R8 REG_R8 60 REG_R9, 61 #define REG_R9 REG_R9 62 REG_R10, 63 #define REG_R10 REG_R10 64 REG_R11, 65 #define REG_R11 REG_R11 66 REG_R12, 67 #define REG_R12 REG_R12 68 REG_R13, 69 #define REG_R13 REG_R13 70 REG_R14, 71 #define REG_R14 REG_R14 72 REG_R15, 73 #define REG_R15 REG_R15 74 }; 75 76 #define NGREG 18 /* Like glibc. */ 77 78 typedef int greg_t; 79 typedef greg_t gregset_t[NGREG]; 80 typedef struct user_fpregs fpregset_t; 81 82 #include <asm/sigcontext.h> 83 typedef struct sigcontext mcontext_t; 84 85 typedef struct ucontext { 86 unsigned long uc_flags; 87 struct ucontext* uc_link; 88 stack_t uc_stack; 89 mcontext_t uc_mcontext; 90 sigset_t uc_sigmask; 91 /* Android has a wrong (smaller) sigset_t on ARM. */ 92 uint32_t __padding_rt_sigset; 93 /* The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM. */ 94 char __padding[120]; 95 unsigned long uc_regspace[128] __attribute__((__aligned__(8))); 96 } ucontext_t; 97 98 #elif defined(__aarch64__) 99 100 #define NGREG 34 /* x0..x30 + sp + pc + pstate */ 101 typedef unsigned long greg_t; 102 typedef greg_t gregset_t[NGREG]; 103 typedef struct user_fpsimd_struct fpregset_t; 104 105 #include <asm/sigcontext.h> 106 typedef struct sigcontext mcontext_t; 107 108 typedef struct ucontext { 109 unsigned long uc_flags; 110 struct ucontext *uc_link; 111 stack_t uc_stack; 112 sigset_t uc_sigmask; 113 /* The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64. */ 114 char __padding[128 - sizeof(sigset_t)]; 115 mcontext_t uc_mcontext; 116 } ucontext_t; 117 118 #elif defined(__i386__) 119 120 enum { 121 REG_GS = 0, 122 #define REG_GS REG_GS 123 REG_FS, 124 #define REG_FS REG_FS 125 REG_ES, 126 #define REG_ES REG_ES 127 REG_DS, 128 #define REG_DS REG_DS 129 REG_EDI, 130 #define REG_EDI REG_EDI 131 REG_ESI, 132 #define REG_ESI REG_ESI 133 REG_EBP, 134 #define REG_EBP REG_EBP 135 REG_ESP, 136 #define REG_ESP REG_ESP 137 REG_EBX, 138 #define REG_EBX REG_EBX 139 REG_EDX, 140 #define REG_EDX REG_EDX 141 REG_ECX, 142 #define REG_ECX REG_ECX 143 REG_EAX, 144 #define REG_EAX REG_EAX 145 REG_TRAPNO, 146 #define REG_TRAPNO REG_TRAPNO 147 REG_ERR, 148 #define REG_ERR REG_ERR 149 REG_EIP, 150 #define REG_EIP REG_EIP 151 REG_CS, 152 #define REG_CS REG_CS 153 REG_EFL, 154 #define REG_EFL REG_EFL 155 REG_UESP, 156 #define REG_UESP REG_UESP 157 REG_SS, 158 #define REG_SS REG_SS 159 NGREG 160 #define NGREG NGREG 161 }; 162 163 typedef int greg_t; 164 typedef greg_t gregset_t[NGREG]; 165 166 struct _libc_fpreg { 167 unsigned short significand[4]; 168 unsigned short exponent; 169 }; 170 171 struct _libc_fpstate { 172 unsigned long cw; 173 unsigned long sw; 174 unsigned long tag; 175 unsigned long ipoff; 176 unsigned long cssel; 177 unsigned long dataoff; 178 unsigned long datasel; 179 struct _libc_fpreg _st[8]; 180 unsigned long status; 181 }; 182 183 typedef struct _libc_fpstate* fpregset_t; 184 185 typedef struct { 186 gregset_t gregs; 187 fpregset_t fpregs; 188 unsigned long oldmask; 189 unsigned long cr2; 190 } mcontext_t; 191 192 typedef struct ucontext { 193 unsigned long uc_flags; 194 struct ucontext* uc_link; 195 stack_t uc_stack; 196 mcontext_t uc_mcontext; 197 sigset_t uc_sigmask; 198 /* Android has a wrong (smaller) sigset_t on x86. */ 199 uint32_t __padding_rt_sigset; 200 struct _libc_fpstate __fpregs_mem; 201 } ucontext_t; 202 203 #elif defined(__mips__) 204 205 /* glibc doesn't have names for MIPS registers. */ 206 207 #define NGREG 32 208 #define NFPREG 32 209 210 typedef unsigned long long greg_t; 211 typedef greg_t gregset_t[NGREG]; 212 213 typedef struct fpregset { 214 union { 215 double fp_dregs[NFPREG]; 216 struct { 217 float _fp_fregs; 218 unsigned _fp_pad; 219 } fp_fregs[NFPREG]; 220 } fp_r; 221 } fpregset_t; 222 223 #ifdef __LP64__ 224 typedef struct { 225 gregset_t gregs; 226 fpregset_t fpregs; 227 greg_t mdhi; 228 greg_t hi1; 229 greg_t hi2; 230 greg_t hi3; 231 greg_t mdlo; 232 greg_t lo1; 233 greg_t lo2; 234 greg_t lo3; 235 greg_t pc; 236 uint32_t fpc_csr; 237 uint32_t used_math; 238 uint32_t dsp; 239 uint32_t reserved; 240 } mcontext_t; 241 #else 242 typedef struct { 243 unsigned regmask; 244 unsigned status; 245 greg_t pc; 246 gregset_t gregs; 247 fpregset_t fpregs; 248 unsigned fp_owned; 249 unsigned fpc_csr; 250 unsigned fpc_eir; 251 unsigned used_math; 252 unsigned dsp; 253 greg_t mdhi; 254 greg_t mdlo; 255 unsigned long hi1; 256 unsigned long lo1; 257 unsigned long hi2; 258 unsigned long lo2; 259 unsigned long hi3; 260 unsigned long lo3; 261 } mcontext_t; 262 #endif 263 264 typedef struct ucontext { 265 unsigned long uc_flags; 266 struct ucontext* uc_link; 267 stack_t uc_stack; 268 mcontext_t uc_mcontext; 269 sigset_t uc_sigmask; 270 } ucontext_t; 271 272 #elif defined(__x86_64__) 273 274 enum { 275 REG_R8 = 0, 276 #define REG_R8 REG_R8 277 REG_R9, 278 #define REG_R9 REG_R9 279 REG_R10, 280 #define REG_R10 REG_R10 281 REG_R11, 282 #define REG_R11 REG_R11 283 REG_R12, 284 #define REG_R12 REG_R12 285 REG_R13, 286 #define REG_R13 REG_R13 287 REG_R14, 288 #define REG_R14 REG_R14 289 REG_R15, 290 #define REG_R15 REG_R15 291 REG_RDI, 292 #define REG_RDI REG_RDI 293 REG_RSI, 294 #define REG_RSI REG_RSI 295 REG_RBP, 296 #define REG_RBP REG_RBP 297 REG_RBX, 298 #define REG_RBX REG_RBX 299 REG_RDX, 300 #define REG_RDX REG_RDX 301 REG_RAX, 302 #define REG_RAX REG_RAX 303 REG_RCX, 304 #define REG_RCX REG_RCX 305 REG_RSP, 306 #define REG_RSP REG_RSP 307 REG_RIP, 308 #define REG_RIP REG_RIP 309 REG_EFL, 310 #define REG_EFL REG_EFL 311 REG_CSGSFS, 312 #define REG_CSGSFS REG_CSGSFS 313 REG_ERR, 314 #define REG_ERR REG_ERR 315 REG_TRAPNO, 316 #define REG_TRAPNO REG_TRAPNO 317 REG_OLDMASK, 318 #define REG_OLDMASK REG_OLDMASK 319 REG_CR2, 320 #define REG_CR2 REG_CR2 321 NGREG 322 #define NGREG NGREG 323 }; 324 325 typedef long greg_t; 326 typedef greg_t gregset_t[NGREG]; 327 328 struct _libc_fpxreg { 329 unsigned short significand[4]; 330 unsigned short exponent; 331 unsigned short padding[3]; 332 }; 333 334 struct _libc_xmmreg { 335 uint32_t element[4]; 336 }; 337 338 struct _libc_fpstate { 339 uint16_t cwd; 340 uint16_t swd; 341 uint16_t ftw; 342 uint16_t fop; 343 uint64_t rip; 344 uint64_t rdp; 345 uint32_t mxcsr; 346 uint32_t mxcr_mask; 347 struct _libc_fpxreg _st[8]; 348 struct _libc_xmmreg _xmm[16]; 349 uint32_t padding[24]; 350 }; 351 352 typedef struct _libc_fpstate* fpregset_t; 353 354 typedef struct { 355 gregset_t gregs; 356 fpregset_t fpregs; 357 unsigned long __reserved1[8]; 358 } mcontext_t; 359 360 typedef struct ucontext { 361 unsigned long uc_flags; 362 struct ucontext* uc_link; 363 stack_t uc_stack; 364 mcontext_t uc_mcontext; 365 sigset_t uc_sigmask; 366 struct _libc_fpstate __fpregs_mem; 367 } ucontext_t; 368 369 #endif 370 371 __END_DECLS 372 373 #endif /* _SYS_UCONTEXT_H_ */ 374
