runtime/platform/android_ucontext.h

   1 // Copyright (c) 2009, Google Inc.
   2 // All rights reserved.
   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
   6 // met:
   7 //
   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
  11 // copyright notice, this list of conditions and the following disclaimer
  12 // in the documentation and/or other materials provided with the
  13 // distribution.
  14 //     * Neither the name of Google Inc. nor the names of its
  15 // contributors may be used to endorse or promote products derived from
  16 // this software without specific prior written permission.
  17 //
  18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29
  30 // Only recent versions of Android's C library correctly define the
  31 // required types for ucontext_t handling. This header provides a
  32 // custom declarations that will work when Google Breakpad is built
  33 // against any version of the NDK or platform headers, and work on
  34 // any version of the system.
  35 //
  36 // See http://code.google.com/p/android/issues/detail?id=34784
  37 //
  38 #ifndef GOOGLE_BREAKPAD_CLIENT_LINUX_ANDROID_UCONTEXT_H_
  39 #define GOOGLE_BREAKPAD_CLIENT_LINUX_ANDROID_UCONTEXT_H_
  40
  41 #include <signal.h>
  42 #include <stdint.h>
  43
  44 #ifndef __BIONIC_HAVE_UCONTEXT_T
  45
  46 #if defined(__arm__)
  47
  48 // Ensure that 'struct sigcontext' is defined.
  49 #include <asm/sigcontext.h>
  50 typedef struct sigcontext mcontext_t;
  51
  52 typedef struct ucontext {
  53   uint32_t uc_flags;
  54   struct ucontext* uc_link;
  55   stack_t uc_stack;
  56   mcontext_t uc_mcontext;
  57   // Other fields are not used by Google Breakpad. Don't define them.
  58 } ucontext_t;
  59
  60 #elif defined(__i386__)
  61
  62 /* 80-bit floating-point register */
  63 struct _libc_fpreg {
  64   unsigned short significand[4];
  65   unsigned short exponent;
  66 };
  67
  68 /* Simple floating-point state, see FNSTENV instruction */
  69 struct _libc_fpstate {
  70   unsigned long cw;
  71   unsigned long sw;
  72   unsigned long tag;
  73   unsigned long ipoff;
  74   unsigned long cssel;
  75   unsigned long dataoff;
  76   unsigned long datasel;
  77   struct _libc_fpreg _st[8];
  78   unsigned long status;
  79 };
  80
  81 typedef struct {
  82   uint32_t gregs[19];
  83   struct _libc_fpstate* fpregs;
  84   uint32_t oldmask;
  85   uint32_t cr2;
  86 } mcontext_t;
  87
  88 enum {
  89   REG_GS = 0,
  90   REG_FS,
  91   REG_ES,
  92   REG_DS,
  93   REG_EDI,
  94   REG_ESI,
  95   REG_EBP,
  96   REG_ESP,
  97   REG_EBX,
  98   REG_EDX,
  99   REG_ECX,
 100   REG_EAX,
 101   REG_TRAPNO,
 102   REG_ERR,
 103   REG_EIP,
 104   REG_CS,
 105   REG_EFL,
 106   REG_UESP,
 107   REG_SS,
 108   REG_ES,
 109   REG_ES,
 110   REG_ES,
 111   REG_ES,
 112 };
 113
 114 typedef struct ucontext {
 115   uint32_t uc_flags;
 116   struct ucontext* uc_link;
 117   stack_t uc_stack;
 118   mcontext_t uc_mcontext;
 119   // Other fields are not used by Google Breakpad. Don't define them.
 120 } ucontext_t;
 121
 122 #elif defined(__mips__)
 123
 124 // Not supported by Google Breakpad at this point, but just in case.
 125 typedef struct {
 126   uint32_t regmask;
 127   uint32_t status;
 128   uint64_t pc;
 129   uint64_t gregs[32];
 130   uint64_t fpregs[32];
 131   uint32_t acx;
 132   uint32_t fpc_csr;
 133   uint32_t fpc_eir;
 134   uint32_t used_math;
 135   uint32_t dsp;
 136   uint64_t mdhi;
 137   uint64_t mdlo;
 138   uint32_t hi1;
 139   uint32_t lo1;
 140   uint32_t hi2;
 141   uint32_t lo2;
 142   uint32_t hi3;
 143   uint32_t lo3;
 144 } mcontext_t;
 145
 146 typedef struct ucontext {
 147   uint32_t uc_flags;
 148   struct ucontext* uc_link;
 149   stack_t uc_stack;
 150   mcontext_t uc_mcontext;
 151   // Other fields are not used by Google Breakpad. Don't define them.
 152 } ucontext_t;
 153
 154 #else
 155 #  error "Unsupported Android CPU ABI!"
 156 #endif
 157
 158 #endif  // !__BIONIC_HAVE_UCONTEXT_T
 159
 160 #endif  // GOOGLE_BREAKPAD_CLIENT_LINUX_ANDROID_UCONTEXT_H_