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84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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/* This file has been imported from
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* http://git.chromium.org/gitweb/?p=chromium.git;a=blob;f=sandbox/linux/services/android_i386_ucontext.h;hb=99b3e83972e478a42fa72da1ffefee58413e87d4
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*/
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#ifndef SANDBOX_LINUX_SERVICES_ANDROID_I386_UCONTEXT_H_
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#define SANDBOX_LINUX_SERVICES_ANDROID_I386_UCONTEXT_H_
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// We do something compatible with glibc. Hopefully, at some point Android will
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// provide that for us, and __BIONIC_HAVE_UCONTEXT_T should be defined.
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// This is mostly copied from breakpad (common/android/include/sys/ucontext.h),
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// except we do use sigset_t for uc_sigmask instead of a custom type.
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#if !defined(__BIONIC_HAVE_UCONTEXT_T)
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#include <asm/sigcontext.h>
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/* 80-bit floating-point register */
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struct _libc_fpreg {
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unsigned short significand[4];
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unsigned short exponent;
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};
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/* Simple floating-point state, see FNSTENV instruction */
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struct _libc_fpstate {
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unsigned long cw;
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unsigned long sw;
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unsigned long tag;
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unsigned long ipoff;
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unsigned long cssel;
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unsigned long dataoff;
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unsigned long datasel;
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struct _libc_fpreg _st[8];
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unsigned long status;
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};
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typedef uint32_t greg_t;
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typedef struct {
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uint32_t gregs[19];
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struct _libc_fpstate* fpregs;
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uint32_t oldmask;
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uint32_t cr2;
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} mcontext_t;
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enum {
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REG_GS = 0,
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REG_FS,
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REG_ES,
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REG_DS,
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REG_EDI,
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REG_ESI,
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REG_EBP,
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REG_ESP,
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REG_EBX,
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REG_EDX,
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REG_ECX,
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REG_EAX,
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REG_TRAPNO,
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REG_ERR,
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REG_EIP,
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REG_CS,
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REG_EFL,
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REG_UESP,
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REG_SS,
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};
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typedef struct ucontext {
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uint32_t uc_flags;
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struct ucontext* uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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sigset_t uc_sigmask;
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struct _libc_fpstate __fpregs_mem;
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} ucontext_t;
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#else
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#include <sys/ucontext.h>
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#endif // __BIONIC_HAVE_UCONTEXT_T
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#endif // SANDBOX_LINUX_SERVICES_ANDROID_I386_UCONTEXT_H_
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