sandbox/linux/services/android_x86_64_ucontext.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef SANDBOX_LINUX_SERVICES_ANDROID_X86_64_UCONTEXT_H_
   6 #define SANDBOX_LINUX_SERVICES_ANDROID_X86_64_UCONTEXT_H_
   7
   8 // We do something compatible with glibc. Hopefully, at some point Android will
   9 // provide that for us, and __BIONIC_HAVE_UCONTEXT_T should be defined.
  10 // Spec:
  11 // http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-AMD64/LSB-Core-AMD64/libc-ddefs.html#AEN5668
  12
  13 #if !defined(__BIONIC_HAVE_UCONTEXT_T)
  14 #include <asm/sigcontext.h>
  15
  16 struct _libc_fpxreg {
  17   unsigned short significand[4];
  18   unsigned short exponent;
  19   unsigned short padding[3];
  20 };
  21
  22 struct _libc_xmmreg {
  23   uint32_t element[4];
  24 };
  25
  26 struct _libc_fpstate {
  27   uint16_t cwd;
  28   uint16_t swd;
  29   uint16_t twd;
  30   uint16_t fop;
  31   uint64_t rip;
  32   uint64_t rdp;
  33   uint32_t mxcsr;
  34   uint32_t mxcsr_mask;
  35   struct _libc_fpxreg _st[8];
  36   struct _libc_xmmreg _xmm[16];
  37   uint32_t padding[24];
  38 };
  39
  40 typedef uint64_t greg_t;
  41
  42 typedef struct {
  43   greg_t gregs[23];
  44   struct _libc_fpstate* fpregs;
  45   unsigned long __reserved1[8];
  46 } mcontext_t;
  47
  48 enum {
  49   REG_R8 = 0,
  50   REG_R9,
  51   REG_R10,
  52   REG_R11,
  53   REG_R12,
  54   REG_R13,
  55   REG_R14,
  56   REG_R15,
  57   REG_RDI,
  58   REG_RSI,
  59   REG_RBP,
  60   REG_RBX,
  61   REG_RDX,
  62   REG_RAX,
  63   REG_RCX,
  64   REG_RSP,
  65   REG_RIP,
  66   REG_EFL,
  67   REG_CSGSFS,
  68   REG_ERR,
  69   REG_TRAPNO,
  70   REG_OLDMASK,
  71   REG_CR2,
  72   NGREG,
  73 };
  74
  75 typedef struct ucontext {
  76   unsigned long uc_flags;
  77   struct ucontext* uc_link;
  78   stack_t uc_stack;
  79   mcontext_t uc_mcontext;
  80   sigset_t uc_sigmask;
  81   struct _libc_fpstate __fpregs_mem;
  82 } ucontext_t;
  83
  84 #else
  85 #include <sys/ucontext.h>
  86 #endif  // __BIONIC_HAVE_UCONTEXT_T
  87
  88 #endif  // SANDBOX_LINUX_SERVICES_ANDROID_X86_64_UCONTEXT_H_