mirror of https://github.com/NekoX-Dev/NekoX.git
187 lines
7.3 KiB
C++
187 lines
7.3 KiB
C++
// Copyright (c) 2012, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#if defined(__x86_64__)
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#include <asm/sigcontext.h>
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#endif
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#include <sys/ucontext.h>
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#include "breakpad_googletest_includes.h"
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#include "common/android/ucontext_constants.h"
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template <int left, int right>
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struct CompileAssertEquals {
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// a compilation error here indicates left and right are not equal.
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char left_too_large[right - left];
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// a compilation error here indicates left and right are not equal.
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char right_too_large[left - right];
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};
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#define COMPILE_ASSERT_EQ(left, right, tag) \
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CompileAssertEquals<left, right> tag;
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TEST(AndroidUContext, GRegsOffset) {
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#if defined(__arm__)
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// There is no gregs[] array on ARM, so compare to the offset of
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// first register fields, since they're stored in order.
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_OFFSET),
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offsetof(ucontext_t,uc_mcontext.arm_r0));
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#elif defined(__aarch64__)
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// There is no gregs[] array on ARM, so compare to the offset of
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// first register fields, since they're stored in order.
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_OFFSET),
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offsetof(ucontext_t,uc_mcontext.regs[0]));
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_SP_OFFSET),
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offsetof(ucontext_t,uc_mcontext.sp));
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_PC_OFFSET),
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offsetof(ucontext_t,uc_mcontext.pc));
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_PSTATE_OFFSET),
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offsetof(ucontext_t,uc_mcontext.pstate));
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_EXTENSION_OFFSET),
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offsetof(ucontext_t,uc_mcontext.__reserved));
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#elif defined(__i386__)
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_OFFSET),
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offsetof(ucontext_t,uc_mcontext.gregs));
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#define CHECK_REG(x) \
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_##x##_OFFSET), \
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offsetof(ucontext_t,uc_mcontext.gregs[REG_##x]))
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CHECK_REG(GS);
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CHECK_REG(FS);
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CHECK_REG(ES);
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CHECK_REG(DS);
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CHECK_REG(EDI);
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CHECK_REG(ESI);
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CHECK_REG(EBP);
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CHECK_REG(ESP);
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CHECK_REG(EBX);
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CHECK_REG(EDX);
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CHECK_REG(ECX);
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CHECK_REG(EAX);
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CHECK_REG(TRAPNO);
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CHECK_REG(ERR);
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CHECK_REG(EIP);
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CHECK_REG(CS);
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CHECK_REG(EFL);
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CHECK_REG(UESP);
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CHECK_REG(SS);
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ASSERT_EQ(static_cast<size_t>(UCONTEXT_FPREGS_OFFSET),
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offsetof(ucontext_t,uc_mcontext.fpregs));
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ASSERT_EQ(static_cast<size_t>(UCONTEXT_FPREGS_MEM_OFFSET),
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offsetof(ucontext_t,__fpregs_mem));
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#elif defined(__mips__)
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_OFFSET),
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offsetof(ucontext_t,uc_mcontext.gregs));
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// PC for mips is not part of gregs.
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_PC_OFFSET),
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offsetof(ucontext_t,uc_mcontext.pc));
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_FPREGS_OFFSET),
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offsetof(ucontext_t,uc_mcontext.fpregs));
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_FPC_CSR),
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offsetof(ucontext_t,uc_mcontext.fpc_csr));
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#elif defined(__x86_64__)
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COMPILE_ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_OFFSET),
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offsetof(ucontext_t,uc_mcontext.gregs),
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mcontext_gregs_offset);
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#define CHECK_REG(x) \
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COMPILE_ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_##x), \
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offsetof(ucontext_t,uc_mcontext.gregs[REG_##x]), reg_##x)
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CHECK_REG(R8);
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CHECK_REG(R9);
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CHECK_REG(R10);
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CHECK_REG(R11);
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CHECK_REG(R12);
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CHECK_REG(R13);
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CHECK_REG(R14);
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CHECK_REG(R15);
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CHECK_REG(RDI);
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CHECK_REG(RSI);
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CHECK_REG(RBP);
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CHECK_REG(RBX);
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CHECK_REG(RDX);
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CHECK_REG(RAX);
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CHECK_REG(RCX);
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CHECK_REG(RSP);
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CHECK_REG(RIP);
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// sigcontext is an analog to mcontext_t. The layout should be the same.
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COMPILE_ASSERT_EQ(offsetof(mcontext_t,fpregs),
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offsetof(sigcontext,fpstate), sigcontext_fpstate);
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// Check that _fpstate from asm/sigcontext.h is essentially the same
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// as _libc_fpstate.
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COMPILE_ASSERT_EQ(sizeof(_libc_fpstate), sizeof(_fpstate),
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sigcontext_fpstate_size);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,cwd),offsetof(_fpstate,cwd),
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sigcontext_fpstate_cwd);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,swd),offsetof(_fpstate,swd),
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sigcontext_fpstate_swd);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,ftw),offsetof(_fpstate,twd),
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sigcontext_fpstate_twd);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,fop),offsetof(_fpstate,fop),
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sigcontext_fpstate_fop);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,rip),offsetof(_fpstate,rip),
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sigcontext_fpstate_rip);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,rdp),offsetof(_fpstate,rdp),
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sigcontext_fpstate_rdp);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,mxcsr),offsetof(_fpstate,mxcsr),
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sigcontext_fpstate_mxcsr);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,mxcr_mask),
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offsetof(_fpstate,mxcsr_mask),
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sigcontext_fpstate_mxcsr_mask);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,_st), offsetof(_fpstate,st_space),
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sigcontext_fpstate_stspace);
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COMPILE_ASSERT_EQ(offsetof(_libc_fpstate,_xmm), offsetof(_fpstate,xmm_space),
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sigcontext_fpstate_xmm_space);
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COMPILE_ASSERT_EQ(MCONTEXT_FPREGS_PTR,
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offsetof(ucontext_t,uc_mcontext.fpregs),
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mcontext_fpregs_ptr);
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COMPILE_ASSERT_EQ(MCONTEXT_FPREGS_MEM, offsetof(ucontext_t,__fpregs_mem),
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mcontext_fpregs_mem);
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COMPILE_ASSERT_EQ(FPREGS_OFFSET_MXCSR, offsetof(_libc_fpstate,mxcsr),
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fpregs_offset_mxcsr);
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COMPILE_ASSERT_EQ(UCONTEXT_SIGMASK_OFFSET, offsetof(ucontext_t, uc_sigmask),
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ucontext_sigmask);
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#else
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ASSERT_EQ(static_cast<size_t>(MCONTEXT_GREGS_OFFSET),
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offsetof(ucontext_t,uc_mcontext.gregs));
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#endif
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}
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TEST(AndroidUContext, SigmakOffset) {
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ASSERT_EQ(static_cast<size_t>(UCONTEXT_SIGMASK_OFFSET),
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offsetof(ucontext_t,uc_sigmask));
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}
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