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_ 89
