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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SANDBOX_LINUX_SYSTEM_HEADERS_X86_64_LINUX_UCONTEXT_H_
#define SANDBOX_LINUX_SYSTEM_HEADERS_X86_64_LINUX_UCONTEXT_H_
#include <stdint.h>
// We do something compatible with glibc. Hopefully, at some point Android will
// provide that for us, and __BIONIC_HAVE_UCONTEXT_T should be defined.
// Spec:
// http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-AMD64/LSB-Core-AMD64/libc-ddefs.html#AEN5668
#if !defined(__BIONIC_HAVE_UCONTEXT_T)
#include <asm/sigcontext.h>
struct _libc_fpxreg {
unsigned short significand[4];
unsigned short exponent;
unsigned short padding[3];
};
struct _libc_xmmreg {
uint32_t element[4];
};
struct _libc_fpstate {
uint16_t cwd;
uint16_t swd;
uint16_t twd;
uint16_t fop;
uint64_t rip;
uint64_t rdp;
uint32_t mxcsr;
uint32_t mxcsr_mask;
struct _libc_fpxreg _st[8];
struct _libc_xmmreg _xmm[16];
uint32_t padding[24];
};
typedef uint64_t greg_t;
typedef struct {
greg_t gregs[23];
struct _libc_fpstate* fpregs;
unsigned long __reserved1[8];
} mcontext_t;
enum {
REG_R8 = 0,
REG_R9,
REG_R10,
REG_R11,
REG_R12,
REG_R13,
REG_R14,
REG_R15,
REG_RDI,
REG_RSI,
REG_RBP,
REG_RBX,
REG_RDX,
REG_RAX,
REG_RCX,
REG_RSP,
REG_RIP,
REG_EFL,
REG_CSGSFS,
REG_ERR,
REG_TRAPNO,
REG_OLDMASK,
REG_CR2,
NGREG,
};
typedef struct ucontext {
unsigned long uc_flags;
struct ucontext* uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
sigset_t uc_sigmask;
struct _libc_fpstate __fpregs_mem;
} ucontext_t;
#else
#include <sys/ucontext.h>
#endif // __BIONIC_HAVE_UCONTEXT_T
#endif // SANDBOX_LINUX_SYSTEM_HEADERS_X86_64_LINUX_UCONTEXT_H_
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