mono/utils/mono-sigcontext.h

   1 /**
   2  * \file
   3  */
   4
   5 #ifndef __MONO_MONO_SIGCONTEXT_H__
   6 #define __MONO_MONO_SIGCONTEXT_H__
   7
   8 #include <config.h>
   9 #if defined(HOST_ANDROID)
  10 #include <asm/sigcontext.h>
  11 #endif
  12
  13 #ifdef HAVE_UCONTEXT_H
  14 #include <ucontext.h>
  15 #endif
  16
  17 #ifdef HAVE_UNISTD_H
  18 #include <unistd.h>
  19 #endif
  20
  21 #ifdef HAVE_SIGNAL_H
  22 #include <signal.h>
  23 #endif
  24
  25 #if defined(TARGET_X86)
  26
  27 #if defined(__APPLE__)
  28 #include <AvailabilityMacros.h>
  29 #endif
  30
  31 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
  32         #define UCONTEXT_REG_EAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_eax)
  33         #define UCONTEXT_REG_EBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_ebx)
  34         #define UCONTEXT_REG_ECX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_ecx)
  35         #define UCONTEXT_REG_EDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_edx)
  36         #define UCONTEXT_REG_EBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_ebp)
  37         #define UCONTEXT_REG_ESP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_esp)
  38         #define UCONTEXT_REG_ESI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_esi)
  39         #define UCONTEXT_REG_EDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_edi)
  40         #define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_eip)
  41 #elif defined(__APPLE__)
  42 #  if defined (TARGET_IOS) || (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5)
  43         #define UCONTEXT_REG_EAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__eax)
  44         #define UCONTEXT_REG_EBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__ebx)
  45         #define UCONTEXT_REG_ECX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__ecx)
  46         #define UCONTEXT_REG_EDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__edx)
  47         #define UCONTEXT_REG_EBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__ebp)
  48         #define UCONTEXT_REG_ESP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__esp)
  49         #define UCONTEXT_REG_ESI(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__esi)
  50         #define UCONTEXT_REG_EDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__edi)
  51         #define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__eip)
  52         #define UCONTEXT_HAS_XMM(_ctx) (TRUE)
  53         #define UCONTEXT_REG_XMM0(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm0)
  54         #define UCONTEXT_REG_XMM1(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm1)
  55         #define UCONTEXT_REG_XMM2(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm2)
  56         #define UCONTEXT_REG_XMM3(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm3)
  57         #define UCONTEXT_REG_XMM4(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm4)
  58         #define UCONTEXT_REG_XMM5(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm5)
  59         #define UCONTEXT_REG_XMM6(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm6)
  60         #define UCONTEXT_REG_XMM7(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm7)
  61 #  else
  62         #define UCONTEXT_REG_EAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.eax)
  63         #define UCONTEXT_REG_EBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.ebx)
  64         #define UCONTEXT_REG_ECX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.ecx)
  65         #define UCONTEXT_REG_EDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.edx)
  66         #define UCONTEXT_REG_EBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.ebp)
  67         #define UCONTEXT_REG_ESP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.esp)
  68         #define UCONTEXT_REG_ESI(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.esi)
  69         #define UCONTEXT_REG_EDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.edi)
  70         #define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->ss.eip)
  71 #  endif
  72 #elif defined(__NetBSD__)
  73         #define UCONTEXT_REG_EAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_EAX])
  74         #define UCONTEXT_REG_EBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_EBX])
  75         #define UCONTEXT_REG_ECX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_ECX])
  76         #define UCONTEXT_REG_EDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_EDX])
  77         #define UCONTEXT_REG_EBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_EBP])
  78         #define UCONTEXT_REG_ESP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_ESP])
  79         #define UCONTEXT_REG_ESI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_ESI])
  80         #define UCONTEXT_REG_EDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_EDI])
  81         #define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_EIP])
  82 #elif defined(__OpenBSD__)
  83     #define UCONTEXT_REG_EAX(ctx) (((ucontext_t*)(ctx))->sc_eax)
  84         #define UCONTEXT_REG_EBX(ctx) (((ucontext_t*)(ctx))->sc_ebx)
  85         #define UCONTEXT_REG_ECX(ctx) (((ucontext_t*)(ctx))->sc_ecx)
  86         #define UCONTEXT_REG_EDX(ctx) (((ucontext_t*)(ctx))->sc_edx)
  87         #define UCONTEXT_REG_EBP(ctx) (((ucontext_t*)(ctx))->sc_ebp)
  88         #define UCONTEXT_REG_ESP(ctx) (((ucontext_t*)(ctx))->sc_esp)
  89         #define UCONTEXT_REG_ESI(ctx) (((ucontext_t*)(ctx))->sc_esi)
  90         #define UCONTEXT_REG_EDI(ctx) (((ucontext_t*)(ctx))->sc_edi)
  91         #define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->sc_eip)
  92 #elif defined(HOST_SOLARIS)
  93         #define UCONTEXT_REG_EAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [EAX])
  94         #define UCONTEXT_REG_EBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [EBX])
  95         #define UCONTEXT_REG_ECX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [ECX])
  96         #define UCONTEXT_REG_EDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [EDX])
  97         #define UCONTEXT_REG_EBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [EBP])
  98         #define UCONTEXT_REG_ESP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [ESP])
  99         #define UCONTEXT_REG_ESI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [ESI])
 100         #define UCONTEXT_REG_EDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [EDI])
 101         #define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [EIP])
 102 #else
 103
 104 #if defined(HOST_ANDROID) && !defined(HAVE_UCONTEXT_H)
 105 /* No ucontext.h as of NDK v6b */
 106 typedef int greg_t;
 107 #define NGREG 19
 108 typedef greg_t gregset_t [NGREG];
 109 enum
 110 {
 111   REG_GS = 0,
 112 # define REG_GS         REG_GS
 113   REG_FS,
 114 # define REG_FS         REG_FS
 115   REG_ES,
 116 # define REG_ES         REG_ES
 117   REG_DS,
 118 # define REG_DS         REG_DS
 119   REG_EDI,
 120 # define REG_EDI        REG_EDI
 121   REG_ESI,
 122 # define REG_ESI        REG_ESI
 123   REG_EBP,
 124 # define REG_EBP        REG_EBP
 125   REG_ESP,
 126 # define REG_ESP        REG_ESP
 127   REG_EBX,
 128 # define REG_EBX        REG_EBX
 129   REG_EDX,
 130 # define REG_EDX        REG_EDX
 131   REG_ECX,
 132 # define REG_ECX        REG_ECX
 133   REG_EAX,
 134 # define REG_EAX        REG_EAX
 135   REG_TRAPNO,
 136 # define REG_TRAPNO     REG_TRAPNO
 137   REG_ERR,
 138 # define REG_ERR        REG_ERR
 139   REG_EIP,
 140 # define REG_EIP        REG_EIP
 141 };
 142
 143 typedef struct {
 144     gregset_t gregs;
 145         /* Many missing fields */
 146 } mcontext_t;
 147
 148 typedef struct ucontext {
 149     unsigned long int uc_flags;
 150     struct ucontext *uc_link;
 151     stack_t uc_stack;
 152     mcontext_t uc_mcontext;
 153         /* Many missing fields */
 154 } ucontext_t;
 155
 156 #endif
 157
 158         #define UCONTEXT_REG_EAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_EAX])
 159         #define UCONTEXT_REG_EBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_EBX])
 160         #define UCONTEXT_REG_ECX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_ECX])
 161         #define UCONTEXT_REG_EDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_EDX])
 162         #define UCONTEXT_REG_EBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_EBP])
 163         #define UCONTEXT_REG_ESP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_ESP])
 164         #define UCONTEXT_REG_ESI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_ESI])
 165         #define UCONTEXT_REG_EDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_EDI])
 166         #define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_EIP])
 167 #endif
 168
 169 #elif defined(TARGET_AMD64)
 170
 171 #if defined(__APPLE__)
 172         #define UCONTEXT_REG_RAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rax)
 173         #define UCONTEXT_REG_RBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rbx)
 174         #define UCONTEXT_REG_RCX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rcx)
 175         #define UCONTEXT_REG_RDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rdx)
 176         #define UCONTEXT_REG_RBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rbp)
 177         #define UCONTEXT_REG_RSP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rsp)
 178         #define UCONTEXT_REG_RSI(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rsi)
 179         #define UCONTEXT_REG_RDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rdi)
 180         #define UCONTEXT_REG_RIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__rip)
 181         #define UCONTEXT_REG_R8(ctx)  (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r8)
 182         #define UCONTEXT_REG_R9(ctx)  (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r9)
 183         #define UCONTEXT_REG_R10(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r10)
 184         #define UCONTEXT_REG_R11(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r11)
 185         #define UCONTEXT_REG_R12(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r12)
 186         #define UCONTEXT_REG_R13(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r13)
 187         #define UCONTEXT_REG_R14(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r14)
 188         #define UCONTEXT_REG_R15(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r15)
 189         #define UCONTEXT_HAS_XMM(_ctx) (TRUE)
 190         #define UCONTEXT_REG_XMM0(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm0)
 191         #define UCONTEXT_REG_XMM1(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm1)
 192         #define UCONTEXT_REG_XMM2(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm2)
 193         #define UCONTEXT_REG_XMM3(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm3)
 194         #define UCONTEXT_REG_XMM4(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm4)
 195         #define UCONTEXT_REG_XMM5(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm5)
 196         #define UCONTEXT_REG_XMM6(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm6)
 197         #define UCONTEXT_REG_XMM7(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm7)
 198         #define UCONTEXT_REG_XMM8(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm8)
 199         #define UCONTEXT_REG_XMM9(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm9)
 200         #define UCONTEXT_REG_XMM10(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm10)
 201         #define UCONTEXT_REG_XMM11(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm11)
 202         #define UCONTEXT_REG_XMM12(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm12)
 203         #define UCONTEXT_REG_XMM13(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm13)
 204         #define UCONTEXT_REG_XMM14(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm14)
 205         #define UCONTEXT_REG_XMM15(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__fs.__fpu_xmm15)
 206 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 207         #define UCONTEXT_REG_RAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rax)
 208         #define UCONTEXT_REG_RBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rbx)
 209         #define UCONTEXT_REG_RCX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rcx)
 210         #define UCONTEXT_REG_RDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rdx)
 211         #define UCONTEXT_REG_RBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rbp)
 212         #define UCONTEXT_REG_RSP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rsp)
 213         #define UCONTEXT_REG_RSI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rsi)
 214         #define UCONTEXT_REG_RDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rdi)
 215         #define UCONTEXT_REG_RIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_rip)
 216         #define UCONTEXT_REG_R8(ctx)  (((ucontext_t*)(ctx))->uc_mcontext.mc_r8)
 217         #define UCONTEXT_REG_R9(ctx)  (((ucontext_t*)(ctx))->uc_mcontext.mc_r9)
 218         #define UCONTEXT_REG_R10(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_r10)
 219         #define UCONTEXT_REG_R11(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_r11)
 220         #define UCONTEXT_REG_R12(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_r12)
 221         #define UCONTEXT_REG_R13(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_r13)
 222         #define UCONTEXT_REG_R14(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_r14)
 223         #define UCONTEXT_REG_R15(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_r15)
 224 #elif defined(__NetBSD__)
 225         #define UCONTEXT_REG_RAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RAX])
 226         #define UCONTEXT_REG_RBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RBX])
 227         #define UCONTEXT_REG_RCX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RCX])
 228         #define UCONTEXT_REG_RDX(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RDX])
 229         #define UCONTEXT_REG_RBP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RBP])
 230         #define UCONTEXT_REG_RSP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RSP])
 231         #define UCONTEXT_REG_RSI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RSI])
 232         #define UCONTEXT_REG_RDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RDI])
 233         #define UCONTEXT_REG_RIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_RIP])
 234         #define UCONTEXT_REG_R8(ctx)  (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_R8])
 235         #define UCONTEXT_REG_R9(ctx)  (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_R9])
 236         #define UCONTEXT_REG_R10(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_R10])
 237         #define UCONTEXT_REG_R11(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_R11])
 238         #define UCONTEXT_REG_R12(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_R12])
 239         #define UCONTEXT_REG_R13(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_R13])
 240         #define UCONTEXT_REG_R14(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_R14])
 241         #define UCONTEXT_REG_R15(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs [_REG_R15])
 242 #elif defined(__OpenBSD__)
 243     /* OpenBSD/amd64 has no gregs array, ucontext_t == sigcontext */
 244         #define UCONTEXT_REG_RAX(ctx) (((ucontext_t*)(ctx))->sc_rax)
 245         #define UCONTEXT_REG_RBX(ctx) (((ucontext_t*)(ctx))->sc_rbx)
 246         #define UCONTEXT_REG_RCX(ctx) (((ucontext_t*)(ctx))->sc_rcx)
 247         #define UCONTEXT_REG_RDX(ctx) (((ucontext_t*)(ctx))->sc_rdx)
 248         #define UCONTEXT_REG_RBP(ctx) (((ucontext_t*)(ctx))->sc_rbp)
 249         #define UCONTEXT_REG_RSP(ctx) (((ucontext_t*)(ctx))->sc_rsp)
 250         #define UCONTEXT_REG_RSI(ctx) (((ucontext_t*)(ctx))->sc_rsi)
 251         #define UCONTEXT_REG_RDI(ctx) (((ucontext_t*)(ctx))->sc_rdi)
 252         #define UCONTEXT_REG_RIP(ctx) (((ucontext_t*)(ctx))->sc_rip)
 253         #define UCONTEXT_REG_R8(ctx) (((ucontext_t*)(ctx))->sc_r8)
 254         #define UCONTEXT_REG_R9(ctx) (((ucontext_t*)(ctx))->sc_r9)
 255         #define UCONTEXT_REG_R10(ctx) (((ucontext_t*)(ctx))->sc_r10)
 256         #define UCONTEXT_REG_R11(ctx) (((ucontext_t*)(ctx))->sc_r11)
 257         #define UCONTEXT_REG_R12(ctx) (((ucontext_t*)(ctx))->sc_r12)
 258         #define UCONTEXT_REG_R13(ctx) (((ucontext_t*)(ctx))->sc_r13)
 259         #define UCONTEXT_REG_R14(ctx) (((ucontext_t*)(ctx))->sc_r14)
 260         #define UCONTEXT_REG_R15(ctx) (((ucontext_t*)(ctx))->sc_r15)
 261 #elif !defined(HOST_WIN32)
 262         #define UCONTEXT_GREGS(ctx)     ((guint64*)&(((ucontext_t*)(ctx))->uc_mcontext.gregs))
 263 #if defined(__GLIBC__)
 264         /*
 265          * Ordinarily, ctx->uc_mcontext.fpregs is a pointer to somewhere in
 266          * ctx->__fpregs_mem and is the preferred way to access the fpstate.
 267          * However, some versions of Windows Subsystem for Linux have a bug where
 268          * the fpregs field is a NULL pointer instead. Since accessing __fpregs_mem
 269          * directly is quite complicated because its exact layout depends on CPU
 270          * features and/or kernel configuration, we sinply won't make the fpstate
 271          * available if the fpregs pointer is NULL.
 272          *
 273          * This is of course not correct (as we won't scan XMM registers on those
 274          * broken WSL versions), but it'll at least prevent a crash when accessing
 275          * the fpregs pointer.
 276          */
 277         #define UCONTEXT_HAS_FREGS(ctx) (!!((ucontext_t *) (ctx))->uc_mcontext.fpregs)
 278         #define UCONTEXT_FREGS(ctx)     (((ucontext_t *) (ctx))->uc_mcontext.fpregs->_xmm)
 279 #endif
 280 #endif
 281
 282 #ifdef UCONTEXT_GREGS
 283 #define UCONTEXT_REG_RAX(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RAX])
 284 #define UCONTEXT_REG_RBX(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RBX])
 285 #define UCONTEXT_REG_RCX(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RCX])
 286 #define UCONTEXT_REG_RDX(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RDX])
 287 #define UCONTEXT_REG_RBP(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RBP])
 288 #define UCONTEXT_REG_RSP(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RSP])
 289 #define UCONTEXT_REG_RSI(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RSI])
 290 #define UCONTEXT_REG_RDI(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RDI])
 291 #define UCONTEXT_REG_RIP(ctx) (UCONTEXT_GREGS ((ctx)) [REG_RIP])
 292 #define UCONTEXT_REG_R8(ctx)  (UCONTEXT_GREGS ((ctx)) [REG_R8])
 293 #define UCONTEXT_REG_R9(ctx)  (UCONTEXT_GREGS ((ctx)) [REG_R9])
 294 #define UCONTEXT_REG_R10(ctx) (UCONTEXT_GREGS ((ctx)) [REG_R10])
 295 #define UCONTEXT_REG_R11(ctx) (UCONTEXT_GREGS ((ctx)) [REG_R11])
 296 #define UCONTEXT_REG_R12(ctx) (UCONTEXT_GREGS ((ctx)) [REG_R12])
 297 #define UCONTEXT_REG_R13(ctx) (UCONTEXT_GREGS ((ctx)) [REG_R13])
 298 #define UCONTEXT_REG_R14(ctx) (UCONTEXT_GREGS ((ctx)) [REG_R14])
 299 #define UCONTEXT_REG_R15(ctx) (UCONTEXT_GREGS ((ctx)) [REG_R15])
 300 #endif
 301
 302 #ifdef UCONTEXT_FREGS
 303 #define UCONTEXT_HAS_XMM(ctx)   (UCONTEXT_HAS_FREGS (ctx))
 304 #define UCONTEXT_REG_XMM0(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM0])
 305 #define UCONTEXT_REG_XMM1(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM1])
 306 #define UCONTEXT_REG_XMM2(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM2])
 307 #define UCONTEXT_REG_XMM3(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM3])
 308 #define UCONTEXT_REG_XMM4(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM4])
 309 #define UCONTEXT_REG_XMM5(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM5])
 310 #define UCONTEXT_REG_XMM6(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM6])
 311 #define UCONTEXT_REG_XMM7(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM7])
 312 #define UCONTEXT_REG_XMM8(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM8])
 313 #define UCONTEXT_REG_XMM9(ctx)  (UCONTEXT_FREGS ((ctx)) [AMD64_XMM9])
 314 #define UCONTEXT_REG_XMM10(ctx) (UCONTEXT_FREGS ((ctx)) [AMD64_XMM10])
 315 #define UCONTEXT_REG_XMM11(ctx) (UCONTEXT_FREGS ((ctx)) [AMD64_XMM11])
 316 #define UCONTEXT_REG_XMM12(ctx) (UCONTEXT_FREGS ((ctx)) [AMD64_XMM12])
 317 #define UCONTEXT_REG_XMM13(ctx) (UCONTEXT_FREGS ((ctx)) [AMD64_XMM13])
 318 #define UCONTEXT_REG_XMM14(ctx) (UCONTEXT_FREGS ((ctx)) [AMD64_XMM14])
 319 #define UCONTEXT_REG_XMM15(ctx) (UCONTEXT_FREGS ((ctx)) [AMD64_XMM15])
 320 #endif
 321
 322 #elif defined(__mono_ppc__)
 323
 324 #if HAVE_UCONTEXT_H
 325 #include <ucontext.h>
 326 #endif
 327
 328 #if defined(__linux__)
 329         typedef ucontext_t os_ucontext;
 330
 331 #ifdef __mono_ppc64__
 332         #define UCONTEXT_REG_Rn(ctx, n)   (((os_ucontext*)(ctx))->uc_mcontext.gp_regs [(n)])
 333         #define UCONTEXT_REG_FPRn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext.fp_regs [(n)])
 334         #define UCONTEXT_REG_NIP(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.gp_regs [PT_NIP])
 335         #define UCONTEXT_REG_LNK(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.gp_regs [PT_LNK])
 336 #else
 337         #define UCONTEXT_REG_Rn(ctx, n)   (((os_ucontext*)(ctx))->uc_mcontext.uc_regs->gregs [(n)])
 338         #define UCONTEXT_REG_FPRn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext.uc_regs->fpregs.fpregs [(n)])
 339         #define UCONTEXT_REG_NIP(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.uc_regs->gregs [PT_NIP])
 340         #define UCONTEXT_REG_LNK(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.uc_regs->gregs [PT_LNK])
 341 #endif
 342 #elif defined (__APPLE__) && defined (_STRUCT_MCONTEXT)
 343         typedef struct __darwin_ucontext os_ucontext;
 344
 345         #define UCONTEXT_REG_Rn(ctx, n)   ((&((os_ucontext*)(ctx))->uc_mcontext->__ss.__r0) [(n)])
 346         #define UCONTEXT_REG_FPRn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext->__fs.__fpregs [(n)])
 347         #define UCONTEXT_REG_NIP(ctx)     (((os_ucontext*)(ctx))->uc_mcontext->__ss.__srr0)
 348         #define UCONTEXT_REG_LNK(ctx)     (((os_ucontext*)(ctx))->uc_mcontext->__ss.__lr)
 349 #elif defined (__APPLE__) && !defined (_STRUCT_MCONTEXT)
 350         typedef struct ucontext os_ucontext;
 351
 352         #define UCONTEXT_REG_Rn(ctx, n)   ((&((os_ucontext*)(ctx))->uc_mcontext->ss.r0) [(n)])
 353         #define UCONTEXT_REG_FPRn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext->fs.fpregs [(n)])
 354         #define UCONTEXT_REG_NIP(ctx)     (((os_ucontext*)(ctx))->uc_mcontext->ss.srr0)
 355         #define UCONTEXT_REG_LNK(ctx)     (((os_ucontext*)(ctx))->uc_mcontext->ss.lr)
 356 #elif defined(__NetBSD__)
 357         typedef ucontext_t os_ucontext;
 358
 359         #define UCONTEXT_REG_Rn(ctx, n)   (((os_ucontext*)(ctx))->uc_mcontext.__gregs [(n)])
 360         #define UCONTEXT_REG_FPRn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext.__fpregs.__fpu_regs [(n)])
 361         #define UCONTEXT_REG_NIP(ctx)     _UC_MACHINE_PC(ctx)
 362         #define UCONTEXT_REG_LNK(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.__gregs [_REG_LR])
 363 #elif defined(__FreeBSD__)
 364         typedef ucontext_t os_ucontext;
 365
 366         #define UCONTEXT_REG_Rn(ctx, n)   (((os_ucontext*)(ctx))->uc_mcontext.mc_gpr [(n)])
 367         #define UCONTEXT_REG_FPRn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext.mc_fpreg [(n)])
 368         #define UCONTEXT_REG_NIP(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.mc_srr0)
 369         #define UCONTEXT_REG_LNK(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.mc_lr)
 370 #elif defined(_AIX)
 371         typedef ucontext_t os_ucontext;
 372
 373         #define UCONTEXT_REG_Rn(ctx, n)   (((os_ucontext*)(ctx))->uc_mcontext.jmp_context.gpr[(n)])
 374         #define UCONTEXT_REG_FPRn(ctx, n) (((os_ucontext*)(ctx))->uc_mcontext.jmp_context.fpr[(n)])
 375         #define UCONTEXT_REG_NIP(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.jmp_context.iar)
 376         #define UCONTEXT_REG_LNK(ctx)     (((os_ucontext*)(ctx))->uc_mcontext.jmp_context.lr)
 377 #endif
 378
 379 #elif defined(TARGET_ARM)
 380 #if defined(__APPLE__)
 381         typedef ucontext_t arm_ucontext;
 382
 383         #define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__pc)
 384         #define UCONTEXT_REG_SP(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__sp)
 385         #define UCONTEXT_REG_LR(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__lr)
 386         #define UCONTEXT_REG_R0(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[0])
 387         #define UCONTEXT_REG_R1(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[1])
 388         #define UCONTEXT_REG_R2(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[2])
 389         #define UCONTEXT_REG_R3(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[3])
 390         #define UCONTEXT_REG_R4(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[4])
 391         #define UCONTEXT_REG_R5(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[5])
 392         #define UCONTEXT_REG_R6(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[6])
 393         #define UCONTEXT_REG_R7(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[7])
 394         #define UCONTEXT_REG_R8(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[8])
 395         #define UCONTEXT_REG_R9(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[9])
 396         #define UCONTEXT_REG_R10(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[10])
 397         #define UCONTEXT_REG_R11(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[11])
 398         #define UCONTEXT_REG_R12(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__r[12])
 399         #define UCONTEXT_REG_CPSR(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__cpsr)
 400         #define UCONTEXT_REG_VFPREGS(ctx) (double*)(((ucontext_t*)(ctx))->uc_mcontext->__fs.__r)
 401 #elif defined(__linux__)
 402         typedef struct arm_ucontext {
 403                 unsigned long       uc_flags;
 404                 struct arm_ucontext *uc_link;
 405                 struct {
 406                         void *p;
 407                         int flags;
 408                         size_t size;
 409                 } sstack_data;
 410                 struct sigcontext sig_ctx;
 411                 /* some 2.6.x kernel has fp data here after a few other fields
 412                 * we don't use them for now...
 413                 */
 414         } arm_ucontext;
 415         #define UCONTEXT_REG_PC(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_pc)
 416         #define UCONTEXT_REG_SP(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_sp)
 417         #define UCONTEXT_REG_LR(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_lr)
 418         #define UCONTEXT_REG_R0(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r0)
 419         #define UCONTEXT_REG_R1(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r1)
 420         #define UCONTEXT_REG_R2(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r2)
 421         #define UCONTEXT_REG_R3(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r3)
 422         #define UCONTEXT_REG_R4(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r4)
 423         #define UCONTEXT_REG_R5(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r5)
 424         #define UCONTEXT_REG_R6(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r6)
 425         #define UCONTEXT_REG_R7(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r7)
 426         #define UCONTEXT_REG_R8(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r8)
 427         #define UCONTEXT_REG_R9(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r9)
 428         #define UCONTEXT_REG_R10(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_r10)
 429         #define UCONTEXT_REG_R11(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_fp)
 430         #define UCONTEXT_REG_R12(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_ip)
 431         #define UCONTEXT_REG_CPSR(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_cpsr)
 432 #elif defined(__NetBSD__)
 433         typedef ucontext_t arm_ucontext;
 434
 435         #define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_PC])
 436         #define UCONTEXT_REG_SP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_SP])
 437         #define UCONTEXT_REG_LR(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_LR])
 438         #define UCONTEXT_REG_R0(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R0])
 439         #define UCONTEXT_REG_R1(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R1])
 440         #define UCONTEXT_REG_R2(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R2])
 441         #define UCONTEXT_REG_R3(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R3])
 442         #define UCONTEXT_REG_R4(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R4])
 443         #define UCONTEXT_REG_R5(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R5])
 444         #define UCONTEXT_REG_R6(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R6])
 445         #define UCONTEXT_REG_R7(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R7])
 446         #define UCONTEXT_REG_R8(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R8])
 447         #define UCONTEXT_REG_R9(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R9])
 448         #define UCONTEXT_REG_R10(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R10])
 449         #define UCONTEXT_REG_R11(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R11])
 450         #define UCONTEXT_REG_R12(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_R12])
 451         #define UCONTEXT_REG_CPSR(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_CPSR])
 452         #define UCONTEXT_REG_VFPREGS(ctx) (((ucontext_t*)(ctx))->uc_mcontext.__gregs[_REG_VFPREGS])
 453 #endif
 454
 455 #elif defined(TARGET_ARM64)
 456
 457 #if defined(MONO_CROSS_COMPILE)
 458         #define UCONTEXT_REG_PC(ctx) NULL
 459         #define UCONTEXT_REG_SP(ctx) NULL
 460         #define UCONTEXT_REG_R0(ctx) NULL
 461         #define UCONTEXT_GREGS(ctx) NULL
 462 #elif defined(__APPLE__)
 463 #include <machine/_mcontext.h>
 464 #include <sys/_types/_ucontext64.h>
 465         /* mach/arm/_structs.h */
 466         #define UCONTEXT_REG_PC(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__pc)
 467         #define UCONTEXT_REG_SP(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__sp)
 468         #define UCONTEXT_REG_R0(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__x [ARMREG_R0])
 469         #define UCONTEXT_GREGS(ctx) (&(((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__x))
 470 #elif defined(__FreeBSD__)
 471 #include <ucontext.h>
 472         /* https://lists.freebsd.org/pipermail/freebsd-arm/2017-February/015611.html */
 473         #define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_elr)
 474         #define UCONTEXT_REG_SP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_sp)
 475         #define UCONTEXT_REG_R0(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_x [ARMREG_R0])
 476         #define UCONTEXT_GREGS(ctx) (&(((ucontext_t*)(ctx))->uc_mcontext.mc_gpregs.gp_x))
 477 #else
 478 #include <ucontext.h>
 479         #define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext.pc)
 480         #define UCONTEXT_REG_SP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.sp)
 481         #define UCONTEXT_REG_R0(ctx) (((ucontext_t*)(ctx))->uc_mcontext.regs [ARMREG_R0])
 482         #define UCONTEXT_GREGS(ctx) (&(((ucontext_t*)(ctx))->uc_mcontext.regs))
 483 #endif
 484
 485 #elif defined(__mips__)
 486
 487 # if HAVE_UCONTEXT_H
 488 #  include <ucontext.h>
 489 # endif
 490
 491 /* No ucontext.h */
 492 #if defined(TARGET_ANDROID)
 493
 494 #define NGREG   32
 495 #define NFPREG  32
 496
 497 typedef unsigned long gregset_t[NGREG];
 498
 499 typedef struct fpregset {
 500         union {
 501                 double  fp_dregs[NFPREG];
 502                 struct {
 503                         float           _fp_fregs;
 504                         unsigned int    _fp_pad;
 505                 } fp_fregs[NFPREG];
 506         } fp_r;
 507 } fpregset_t;
 508
 509 typedef struct
 510   {
 511     unsigned int regmask;
 512     unsigned int status;
 513     unsigned long pc;
 514     gregset_t gregs;
 515     fpregset_t fpregs;
 516           /* missing fields follow */
 517 } mcontext_t;
 518
 519 typedef struct ucontext
 520   {
 521     unsigned long int uc_flags;
 522     struct ucontext *uc_link;
 523     stack_t uc_stack;
 524     mcontext_t uc_mcontext;
 525           /* missing fields follow */
 526   } ucontext_t;
 527
 528 #endif
 529
 530 # define UCONTEXT_GREGS(ctx)    (((ucontext_t *)(ctx))->uc_mcontext.gregs)
 531 # define UCONTEXT_FPREGS(ctx)   (((ucontext_t *)(ctx))->uc_mcontext.fpregs.fp_r.fp_dregs)
 532 # define UCONTEXT_REG_PC(ctx)   (((ucontext_t *)(ctx))->uc_mcontext.pc)
 533
 534 #elif defined(__s390x__)
 535
 536 # if HAVE_UCONTEXT_H
 537 #  include <ucontext.h>
 538 # endif
 539
 540 # define UCONTEXT_GREGS(ctx)    (((ucontext_t *)(ctx))->uc_mcontext.gregs)
 541 #endif
 542
 543 #elif defined (TARGET_RISCV)
 544
 545 #if defined(MONO_CROSS_COMPILE)
 546
 547 #define UCONTEXT_GREGS(ctx) (NULL)
 548 #define UCONTEXT_FREGS(ctx) (NULL)
 549 #define UCONTEXT_REG_PC(ctx) (NULL)
 550 #define UCONTEXT_REG_BP(ctx) (NULL)
 551 #define UCONTEXT_REG_SP(ctx) (NULL)
 552
 553 #else
 554
 555 #include <ucontext.h>
 556
 557 #define UCONTEXT_GREGS(ctx) (((ucontext_t *) (ctx))->uc_mcontext.gregs)
 558 #define UCONTEXT_FREGS(ctx) (((ucontext_t *) (ctx))->uc_mcontext.fpregs)
 559 #define UCONTEXT_REG_PC(ctx) (UCONTEXT_GREGS ((ctx)) [REG_PC])
 560 #define UCONTEXT_REG_BP(ctx) (UCONTEXT_GREGS ((ctx)) [REG_S0])
 561 #define UCONTEXT_REG_SP(ctx) (UCONTEXT_GREGS ((ctx)) [REG_SP])
 562
 563 #endif
 564
 565 #endif