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 41enum { 42 REG_R0 = 0, 43 REG_R1, 44 REG_R2, 45 REG_R3, 46 REG_R4, 47 REG_R5, 48 REG_R6, 49 REG_R7, 50 REG_R8, 51 REG_R9, 52 REG_R10, 53 REG_R11, 54 REG_R12, 55 REG_R13, 56 REG_R14, 57 REG_R15, 58}; 59 60#define NGREG 18 /* Like glibc. */ 61 62typedef int greg_t; 63typedef greg_t gregset_t[NGREG]; 64typedef struct user_fpregs fpregset_t; 65 66#include <asm/sigcontext.h> 67typedef struct sigcontext mcontext_t; 68 69typedef struct ucontext { 70 unsigned long uc_flags; 71 struct ucontext* uc_link; 72 stack_t uc_stack; 73 mcontext_t uc_mcontext; 74 sigset_t uc_sigmask; 75 /* Android has a wrong (smaller) sigset_t on ARM. */ 76 uint32_t __padding_rt_sigset; 77 /* The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM. */ 78 char __padding[120]; 79 unsigned long uc_regspace[128] __attribute__((__aligned__(8))); 80} ucontext_t; 81 82#elif defined(__aarch64__) 83 84#define NGREG 34 /* x0..x30 + sp + pc + pstate */ 85typedef unsigned long greg_t; 86typedef greg_t gregset_t[NGREG]; 87typedef struct user_fpsimd_struct fpregset_t; 88 89#include <asm/sigcontext.h> 90typedef struct sigcontext mcontext_t; 91 92typedef struct ucontext { 93 unsigned long uc_flags; 94 struct ucontext *uc_link; 95 stack_t uc_stack; 96 sigset_t uc_sigmask; 97 /* The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64. */ 98 char __padding[128 - sizeof(sigset_t)]; 99 mcontext_t uc_mcontext; 100} ucontext_t; 101 102#elif defined(__i386__) 103 104enum { 105 REG_GS = 0, 106 REG_FS, 107 REG_ES, 108 REG_DS, 109 REG_EDI, 110 REG_ESI, 111 REG_EBP, 112 REG_ESP, 113 REG_EBX, 114 REG_EDX, 115 REG_ECX, 116 REG_EAX, 117 REG_TRAPNO, 118 REG_ERR, 119 REG_EIP, 120 REG_CS, 121 REG_EFL, 122 REG_UESP, 123 REG_SS, 124 NGREG 125}; 126 127typedef int greg_t; 128typedef greg_t gregset_t[NGREG]; 129 130struct _libc_fpreg { 131 unsigned short significand[4]; 132 unsigned short exponent; 133}; 134 135struct _libc_fpstate { 136 unsigned long cw; 137 unsigned long sw; 138 unsigned long tag; 139 unsigned long ipoff; 140 unsigned long cssel; 141 unsigned long dataoff; 142 unsigned long datasel; 143 struct _libc_fpreg _st[8]; 144 unsigned long status; 145}; 146 147typedef struct _libc_fpstate* fpregset_t; 148 149typedef struct { 150 gregset_t gregs; 151 fpregset_t fpregs; 152 unsigned long oldmask; 153 unsigned long cr2; 154} mcontext_t; 155 156typedef struct ucontext { 157 unsigned long uc_flags; 158 struct ucontext* uc_link; 159 stack_t uc_stack; 160 mcontext_t uc_mcontext; 161 sigset_t uc_sigmask; 162 /* Android has a wrong (smaller) sigset_t on x86. */ 163 uint32_t __padding_rt_sigset; 164 struct _libc_fpstate __fpregs_mem; 165} ucontext_t; 166 167#elif defined(__mips__) 168 169/* glibc doesn't have names for MIPS registers. */ 170 171#define NGREG 32 172#define NFPREG 32 173 174typedef unsigned long long greg_t; 175typedef greg_t gregset_t[NGREG]; 176 177typedef struct fpregset { 178 union { 179 double fp_dregs[NFPREG]; 180 struct { 181 float _fp_fregs; 182 unsigned _fp_pad; 183 } fp_fregs[NFPREG]; 184 } fp_r; 185} fpregset_t; 186 187#ifdef __LP64__ 188typedef struct { 189 gregset_t gregs; 190 fpregset_t fpregs; 191 greg_t mdhi; 192 greg_t hi1; 193 greg_t hi2; 194 greg_t hi3; 195 greg_t mdlo; 196 greg_t lo1; 197 greg_t lo2; 198 greg_t lo3; 199 greg_t pc; 200 uint32_t fpc_csr; 201 uint32_t used_math; 202 uint32_t dsp; 203 uint32_t reserved; 204} mcontext_t; 205#else 206typedef struct { 207 unsigned regmask; 208 unsigned status; 209 greg_t pc; 210 gregset_t gregs; 211 fpregset_t fpregs; 212 unsigned fp_owned; 213 unsigned fpc_csr; 214 unsigned fpc_eir; 215 unsigned used_math; 216 unsigned dsp; 217 greg_t mdhi; 218 greg_t mdlo; 219 unsigned long hi1; 220 unsigned long lo1; 221 unsigned long hi2; 222 unsigned long lo2; 223 unsigned long hi3; 224 unsigned long lo3; 225} mcontext_t; 226#endif 227 228typedef struct ucontext { 229 unsigned long uc_flags; 230 struct ucontext* uc_link; 231 stack_t uc_stack; 232 mcontext_t uc_mcontext; 233 sigset_t uc_sigmask; 234} ucontext_t; 235 236#elif defined(__x86_64__) 237 238enum { 239 REG_R8 = 0, 240 REG_R9, 241 REG_R10, 242 REG_R11, 243 REG_R12, 244 REG_R13, 245 REG_R14, 246 REG_R15, 247 REG_RDI, 248 REG_RSI, 249 REG_RBP, 250 REG_RBX, 251 REG_RDX, 252 REG_RAX, 253 REG_RCX, 254 REG_RSP, 255 REG_RIP, 256 REG_EFL, 257 REG_CSGSFS, 258 REG_ERR, 259 REG_TRAPNO, 260 REG_OLDMASK, 261 REG_CR2, 262 NGREG 263}; 264 265typedef long greg_t; 266typedef greg_t gregset_t[NGREG]; 267 268struct _libc_fpxreg { 269 unsigned short significand[4]; 270 unsigned short exponent; 271 unsigned short padding[3]; 272}; 273 274struct _libc_xmmreg { 275 uint32_t element[4]; 276}; 277 278struct _libc_fpstate { 279 uint16_t cwd; 280 uint16_t swd; 281 uint16_t ftw; 282 uint16_t fop; 283 uint64_t rip; 284 uint64_t rdp; 285 uint32_t mxcsr; 286 uint32_t mxcr_mask; 287 struct _libc_fpxreg _st[8]; 288 struct _libc_xmmreg _xmm[16]; 289 uint32_t padding[24]; 290}; 291 292typedef struct _libc_fpstate* fpregset_t; 293 294typedef struct { 295 gregset_t gregs; 296 fpregset_t fpregs; 297 unsigned long __reserved1[8]; 298} mcontext_t; 299 300typedef struct ucontext { 301 unsigned long uc_flags; 302 struct ucontext* uc_link; 303 stack_t uc_stack; 304 mcontext_t uc_mcontext; 305 sigset_t uc_sigmask; 306 struct _libc_fpstate __fpregs_mem; 307} ucontext_t; 308 309#endif 310 311__END_DECLS 312 313#endif /* _SYS_UCONTEXT_H_ */ 314