6db97e82a4
This change adds a copy of <ucontext.h> for Android found in google-breakpad that is missing from the official NDK. ASan SEGV handler is still disabled by default and can be enabled with ASAN_OPTIONS=handle_segv. llvm-svn: 201084
175 lines
4.4 KiB
C
175 lines
4.4 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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#ifndef GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_UCONTEXT_H
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#define GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_UCONTEXT_H
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#include <sys/cdefs.h>
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#include <signal.h>
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#ifndef __BIONIC_HAVE_UCONTEXT_T
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// Ensure that 'stack_t' is defined.
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#include <asm/signal.h>
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// This version of the Android C library headers do not provide ucontext_t.
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// Provide custom definitions for Google Breakpad.
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#if defined(__arm__)
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// Ensure that 'struct sigcontext' is defined.
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#include <asm/sigcontext.h>
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typedef struct sigcontext mcontext_t;
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// The ARM kernel uses a 64-bit signal mask.
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typedef uint32_t kernel_sigmask_t[2];
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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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kernel_sigmask_t uc_sigmask;
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// Other fields are not used by Google Breakpad. Don't define them.
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} ucontext_t;
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#elif defined(__i386__)
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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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// The i386 kernel uses a 64-bit signal mask.
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typedef uint32_t kernel_sigmask_t[2];
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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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kernel_sigmask_t uc_sigmask;
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struct _libc_fpstate __fpregs_mem;
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} ucontext_t;
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#elif defined(__mips__)
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typedef struct {
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uint32_t regmask;
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uint32_t status;
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uint64_t pc;
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uint64_t gregs[32];
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uint64_t fpregs[32];
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uint32_t acx;
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uint32_t fpc_csr;
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uint32_t fpc_eir;
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uint32_t used_math;
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uint32_t dsp;
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uint64_t mdhi;
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uint64_t mdlo;
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uint32_t hi1;
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uint32_t lo1;
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uint32_t hi2;
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uint32_t lo2;
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uint32_t hi3;
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uint32_t lo3;
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} mcontext_t;
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// The MIPS kernel uses a 128-bit signal mask.
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typedef uint32_t kernel_sigmask_t[4];
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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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kernel_sigmask_t uc_sigmask;
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// Other fields are not used by Google Breakpad. Don't define them.
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} ucontext_t;
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#else
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# error "Unsupported Android CPU ABI!"
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#endif
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#endif // __BIONIC_HAVE_UCONTEXT_T
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#ifdef __cplusplus
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} // extern "C"
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#endif // __cplusplus
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#endif // GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_UCONTEXT_H
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