1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/sandbox/linux/android_i386_ucontext.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,83 @@
1.4 +// Copyright (c) 2012 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +/* This file has been imported from
1.9 + * http://git.chromium.org/gitweb/?p=chromium.git;a=blob;f=sandbox/linux/services/android_i386_ucontext.h;hb=99b3e83972e478a42fa72da1ffefee58413e87d4
1.10 + */
1.11 +
1.12 +#ifndef SANDBOX_LINUX_SERVICES_ANDROID_I386_UCONTEXT_H_
1.13 +#define SANDBOX_LINUX_SERVICES_ANDROID_I386_UCONTEXT_H_
1.14 +
1.15 +// We do something compatible with glibc. Hopefully, at some point Android will
1.16 +// provide that for us, and __BIONIC_HAVE_UCONTEXT_T should be defined.
1.17 +// This is mostly copied from breakpad (common/android/include/sys/ucontext.h),
1.18 +// except we do use sigset_t for uc_sigmask instead of a custom type.
1.19 +
1.20 +#if !defined(__BIONIC_HAVE_UCONTEXT_T)
1.21 +#include <asm/sigcontext.h>
1.22 +
1.23 +/* 80-bit floating-point register */
1.24 +struct _libc_fpreg {
1.25 + unsigned short significand[4];
1.26 + unsigned short exponent;
1.27 +};
1.28 +
1.29 +/* Simple floating-point state, see FNSTENV instruction */
1.30 +struct _libc_fpstate {
1.31 + unsigned long cw;
1.32 + unsigned long sw;
1.33 + unsigned long tag;
1.34 + unsigned long ipoff;
1.35 + unsigned long cssel;
1.36 + unsigned long dataoff;
1.37 + unsigned long datasel;
1.38 + struct _libc_fpreg _st[8];
1.39 + unsigned long status;
1.40 +};
1.41 +
1.42 +typedef uint32_t greg_t;
1.43 +
1.44 +typedef struct {
1.45 + uint32_t gregs[19];
1.46 + struct _libc_fpstate* fpregs;
1.47 + uint32_t oldmask;
1.48 + uint32_t cr2;
1.49 +} mcontext_t;
1.50 +
1.51 +enum {
1.52 + REG_GS = 0,
1.53 + REG_FS,
1.54 + REG_ES,
1.55 + REG_DS,
1.56 + REG_EDI,
1.57 + REG_ESI,
1.58 + REG_EBP,
1.59 + REG_ESP,
1.60 + REG_EBX,
1.61 + REG_EDX,
1.62 + REG_ECX,
1.63 + REG_EAX,
1.64 + REG_TRAPNO,
1.65 + REG_ERR,
1.66 + REG_EIP,
1.67 + REG_CS,
1.68 + REG_EFL,
1.69 + REG_UESP,
1.70 + REG_SS,
1.71 +};
1.72 +
1.73 +typedef struct ucontext {
1.74 + uint32_t uc_flags;
1.75 + struct ucontext* uc_link;
1.76 + stack_t uc_stack;
1.77 + mcontext_t uc_mcontext;
1.78 + sigset_t uc_sigmask;
1.79 + struct _libc_fpstate __fpregs_mem;
1.80 +} ucontext_t;
1.81 +
1.82 +#else
1.83 +#include <sys/ucontext.h>
1.84 +#endif // __BIONIC_HAVE_UCONTEXT_T
1.85 +
1.86 +#endif // SANDBOX_LINUX_SERVICES_ANDROID_I386_UCONTEXT_H_
