| diff --git a/src/stacktrace_aarch64-inl.h b/src/stacktrace_aarch64-inl.h |
| new file mode 100644 |
| index 0000000..1e3ce62 |
| --- /dev/null |
| +++ b/src/stacktrace_aarch64-inl.h |
| @@ -0,0 +1,105 @@ |
| +// Copyright (c) 2007, Google Inc. |
| +// All rights reserved. |
| +// |
| +// Redistribution and use in source and binary forms, with or without |
| +// modification, are permitted provided that the following conditions are |
| +// met: |
| +// |
| +// * Redistributions of source code must retain the above copyright |
| +// notice, this list of conditions and the following disclaimer. |
| +// * Redistributions in binary form must reproduce the above |
| +// copyright notice, this list of conditions and the following disclaimer |
| +// in the documentation and/or other materials provided with the |
| +// distribution. |
| +// * Neither the name of Google Inc. nor the names of its |
| +// contributors may be used to endorse or promote products derived from |
| +// this software without specific prior written permission. |
| +// |
| +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| +// |
| +// Author: Craig Silverstein |
| +// |
| +// Produce stack trace. I'm guessing (hoping!) the code is much like |
| +// for x86. For apple machines, at least, it seems to be; see |
| +// http://developer.apple.com/documentation/mac/runtimehtml/RTArch-59.html |
| +// http://www.linux-foundation.org/spec/ELF/ppc64/PPC-elf64abi-1.9.html#STACK |
| +// Linux has similar code: http://patchwork.ozlabs.org/linuxppc/patch?id=8882 |
| + |
| +#include <stdio.h> |
| +#include <stdint.h> // for uintptr_t |
| +#include "stacktrace.h" |
| + |
| +_START_GOOGLE_NAMESPACE_ |
| + |
| +// Given a pointer to a stack frame, locate and return the calling |
| +// stackframe, or return NULL if no stackframe can be found. Perform sanity |
| +// checks (the strictness of which is controlled by the boolean parameter |
| +// "STRICT_UNWINDING") to reduce the chance that a bad pointer is returned. |
| +template<bool STRICT_UNWINDING> |
| +static void **NextStackFrame(void **old_sp) { |
| + void **new_sp = (void**) old_sp[0]; |
| + |
| + // Check that the transition from frame pointer old_sp to frame |
| + // pointer new_sp isn't clearly bogus |
| + if (STRICT_UNWINDING) { |
| + // With the stack growing downwards, older stack frame must be |
| + // at a greater address that the current one. |
| + if (new_sp <= old_sp) return NULL; |
| + // Assume stack frames larger than 100,000 bytes are bogus. |
| + if ((uintptr_t)new_sp - (uintptr_t)old_sp > 100000) return NULL; |
| + } else { |
| + // In the non-strict mode, allow discontiguous stack frames. |
| + // (alternate-signal-stacks for example). |
| + if (new_sp == old_sp) return NULL; |
| + // And allow frames upto about 1MB. |
| + if ((new_sp > old_sp) |
| + && ((uintptr_t)new_sp - (uintptr_t)old_sp > 1000000)) return NULL; |
| + } |
| + if ((uintptr_t)new_sp & (sizeof(void *) - 1)) return NULL; |
| + return new_sp; |
| +} |
| + |
| +// This ensures that GetStackTrace stes up the Link Register properly. |
| +#ifdef __GNUC__ |
| +void StacktraceArm64DummyFunction() __attribute__((noinline)); |
| +void StacktraceArm64DummyFunction() { __asm__ volatile(""); } |
| +#else |
| +# error StacktraceArm64DummyFunction() needs to be ported to this platform. |
| +#endif |
| + |
| +// If you change this function, also change GetStackFrames below. |
| +int GetStackTrace(void** result, int max_depth, int skip_count) { |
| +#ifdef __GNUC__ |
| + void **sp = reinterpret_cast<void**>(__builtin_frame_address(0)); |
| +#else |
| +# error reading stack point not yet supported on this platform. |
| +#endif |
| + |
| + StacktraceArm64DummyFunction(); |
| + |
| + skip_count++; // skip parent frame due to indirection in stacktrace.cc |
| + |
| + int n = 0; |
| + while (sp && n < max_depth) { |
| + if (skip_count > 0) { |
| + skip_count--; |
| + } else { |
| + result[n++] = *(sp+1); |
| + } |
| + // Use strict unwinding rules. |
| + sp = NextStackFrame<true>(sp); |
| + } |
| + return n; |
| +} |
| + |
| +_END_GOOGLE_NAMESPACE_ |
| |
| |
| diff --git a/Makefile.am b/Makefile.am |
| index 0c87c89..886594c 100644 |
| --- a/Makefile.am |
| +++ b/Makefile.am |
| @@ -64,6 +64,7 @@ libglog_la_SOURCES = $(gloginclude_HEADERS) \ |
| src/stacktrace_generic-inl.h \ |
| src/stacktrace_libunwind-inl.h \ |
| src/stacktrace_powerpc-inl.h \ |
| + src/stacktrace_aarch64-inl.h \ |
| src/stacktrace_x86-inl.h \ |
| src/stacktrace_x86_64-inl.h \ |
| src/symbolize.cc src/symbolize.h \ |
| |
| diff --git a/src/utilities.h b/src/utilities.h |
| index 5f79968..3ca051b 100644 |
| --- a/src/utilities.h |
| +++ b/src/utilities.h |
| @@ -102,7 +102,11 @@ |
| // Some code may do that. |
| |
| #if defined(HAVE_LIB_UNWIND) |
| -# define STACKTRACE_H "stacktrace_libunwind-inl.h" |
| +# if defined(__aarch64__) |
| +# define STACKTRACE_H "stacktrace_aarch64-inl.h" |
| +# else |
| +# define STACKTRACE_H "stacktrace_libunwind-inl.h" |
| +# endif |
| #elif !defined(NO_FRAME_POINTER) |
| # if defined(__i386__) && __GNUC__ >= 2 |
| # define STACKTRACE_H "stacktrace_x86-inl.h" |
| @@ -110,6 +114,8 @@ |
| # define STACKTRACE_H "stacktrace_x86_64-inl.h" |
| # elif (defined(__ppc__) || defined(__PPC__)) && __GNUC__ >= 2 |
| # define STACKTRACE_H "stacktrace_powerpc-inl.h" |
| +# elif defined(__aarch64__) |
| +# define STACKTRACE_H "stacktrace_aarch64-inl.h" |
| # endif |
| #endif |