551 lines
18 KiB
C++
551 lines
18 KiB
C++
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// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/mach/symbolic_constants_mach.h"
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#include <string.h>
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#include <sys/types.h>
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#include "base/cxx17_backports.h"
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#include "base/strings/stringprintf.h"
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#include "util/mach/exception_behaviors.h"
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#include "util/mach/mach_extensions.h"
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#include "util/misc/implicit_cast.h"
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#include "util/stdlib/string_number_conversion.h"
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namespace {
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constexpr const char* kExceptionNames[] = {
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nullptr,
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// sed -Ene 's/^#define[[:space:]]EXC_([[:graph:]]+)[[:space:]]+[[:digit:]]{1,2}([[:space:]]|$).*/ "\1",/p'
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// /usr/include/mach/exception_types.h
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"BAD_ACCESS",
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"BAD_INSTRUCTION",
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"ARITHMETIC",
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"EMULATION",
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"SOFTWARE",
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"BREAKPOINT",
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"SYSCALL",
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"MACH_SYSCALL",
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"RPC_ALERT",
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"CRASH",
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"RESOURCE",
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"GUARD",
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"CORPSE_NOTIFY",
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};
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static_assert(base::size(kExceptionNames) == EXC_TYPES_COUNT,
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"kExceptionNames length");
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constexpr char kExcPrefix[] = "EXC_";
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constexpr char kExcMaskPrefix[] = "EXC_MASK_";
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constexpr const char* kBehaviorNames[] = {
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nullptr,
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// sed -Ene 's/^# define[[:space:]]EXCEPTION_([[:graph:]]+)[[:space:]]+[[:digit:]]{1,2}([[:space:]]|$).*/ "\1",/p'
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// /usr/include/mach/exception_types.h
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"DEFAULT",
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"STATE",
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"STATE_IDENTITY",
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};
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constexpr char kBehaviorPrefix[] = "EXCEPTION_";
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constexpr char kMachExceptionCodesFull[] = "MACH_EXCEPTION_CODES";
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constexpr char kMachExceptionCodesShort[] = "MACH";
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constexpr const char* kFlavorNames[] = {
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"THREAD_STATE_FLAVOR_LIST",
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#if defined(__i386__) || defined(__x86_64__)
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// sed -Ene 's/^#define ((x86|THREAD)_[[:graph:]]+)[[:space:]]+[[:digit:]]{1,2}.*$/ "\1",/p'
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// /usr/include/mach/i386/thread_status.h
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// and then fix up by adding x86_SAVED_STATE32 and x86_SAVED_STATE64.
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"x86_THREAD_STATE32",
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"x86_FLOAT_STATE32",
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"x86_EXCEPTION_STATE32",
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"x86_THREAD_STATE64",
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"x86_FLOAT_STATE64",
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"x86_EXCEPTION_STATE64",
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"x86_THREAD_STATE",
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"x86_FLOAT_STATE",
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"x86_EXCEPTION_STATE",
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"x86_DEBUG_STATE32",
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"x86_DEBUG_STATE64",
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"x86_DEBUG_STATE",
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"THREAD_STATE_NONE",
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"x86_SAVED_STATE32",
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"x86_SAVED_STATE64",
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"x86_AVX_STATE32",
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"x86_AVX_STATE64",
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"x86_AVX_STATE",
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#elif defined(__ppc__) || defined(__ppc64__)
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// sed -Ene 's/^#define ((PPC|THREAD)_[[:graph:]]+)[[:space:]]+[[:digit:]]{1,2}.*$/ "\1",/p'
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// usr/include/mach/ppc/thread_status.h
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// (Mac OS X 10.6 SDK)
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"PPC_THREAD_STATE",
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"PPC_FLOAT_STATE",
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"PPC_EXCEPTION_STATE",
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"PPC_VECTOR_STATE",
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"PPC_THREAD_STATE64",
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"PPC_EXCEPTION_STATE64",
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"THREAD_STATE_NONE",
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#elif defined(__arm__) || defined(__aarch64__)
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// sed -Ene 's/^#define ((ARM|THREAD)_[[:graph:]]+)[[:space:]]+[[:digit:]]{1,2}.*$/ "\1",/p'
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// usr/include/mach/arm/thread_status.h
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// (iOS 7 SDK)
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// and then fix up by making the list sparse as appropriate.
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"ARM_THREAD_STATE",
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"ARM_VFP_STATE",
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"ARM_EXCEPTION_STATE",
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"ARM_DEBUG_STATE",
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"THREAD_STATE_NONE",
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"ARM_THREAD_STATE64",
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"ARM_EXCEPTION_STATE64",
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nullptr,
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"ARM_THREAD_STATE32",
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nullptr,
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nullptr,
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nullptr,
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nullptr,
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"ARM_DEBUG_STATE32",
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"ARM_DEBUG_STATE64",
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"ARM_NEON_STATE",
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"ARM_NEON_STATE64",
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#endif
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};
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// Certain generic flavors have high constants not contiguous with the flavors
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// above. List them separately alongside their constants.
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constexpr struct {
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thread_state_flavor_t flavor;
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const char* name;
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} kGenericFlavorNames[] = {
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{THREAD_STATE_FLAVOR_LIST_NEW, "THREAD_STATE_FLAVOR_LIST_NEW"},
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{THREAD_STATE_FLAVOR_LIST_10_9, "THREAD_STATE_FLAVOR_LIST_10_9"},
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};
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// Returns the short name for a flavor name, given its full flavor name.
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std::string ThreadStateFlavorFullToShort(const base::StringPiece& flavor) {
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// For generic flavors like THREAD_STATE_NONE and THREAD_STATE_FLAVOR_LIST_*.
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static constexpr char kThreadState[] = "THREAD_STATE_";
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size_t prefix_len = strlen(kThreadState);
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const char* flavor_data = flavor.data();
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size_t flavor_len = flavor.size();
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if (flavor_len >= prefix_len &&
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strncmp(flavor_data, kThreadState, prefix_len) == 0) {
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return std::string(flavor_data + prefix_len, flavor_len - prefix_len);
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}
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// For architecture-specific flavors.
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#if defined(__i386__) || defined(__x86_64__)
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static constexpr char kArchPrefix[] = "x86_";
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#elif defined(__ppc__) || defined(__ppc64__)
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static constexpr char kArchPrefix[] = "PPC_";
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#elif defined(__arm__) || defined(__aarch64__)
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static constexpr char kArchPrefix[] = "ARM_";
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#endif
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prefix_len = strlen(kArchPrefix);
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if (flavor_len >= prefix_len &&
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strncmp(flavor_data, kArchPrefix, prefix_len) == 0) {
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// Shorten the suffix by removing _STATE. If the suffix contains a
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// significant designation like 32 or 64, keep it, so that a full name like
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// x86_THREAD_STATE64 becomes a short name like THREAD64.
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static constexpr struct {
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const char* orig;
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const char* repl;
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} kStateSuffixes[] = {
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{"_STATE", ""},
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{"_STATE32", "32"},
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{"_STATE64", "64"},
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};
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for (size_t suffix_index = 0; suffix_index < base::size(kStateSuffixes);
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++suffix_index) {
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const char* suffix = kStateSuffixes[suffix_index].orig;
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size_t suffix_len = strlen(suffix);
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if (flavor_len >= suffix_len &&
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strncmp(flavor_data + flavor_len - suffix_len, suffix, suffix_len) ==
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0) {
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std::string s(flavor_data + prefix_len,
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flavor_len - prefix_len - suffix_len);
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return s.append(kStateSuffixes[suffix_index].repl);
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}
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}
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}
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return std::string(flavor_data, flavor_len);
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}
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} // namespace
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namespace crashpad {
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std::string ExceptionToString(exception_type_t exception,
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SymbolicConstantToStringOptions options) {
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const char* exception_name =
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implicit_cast<size_t>(exception) < base::size(kExceptionNames)
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? kExceptionNames[exception]
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: nullptr;
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if (!exception_name) {
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if (options & kUnknownIsNumeric) {
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return base::StringPrintf("%d", exception);
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}
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return std::string();
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}
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if (options & kUseShortName) {
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return std::string(exception_name);
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}
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return base::StringPrintf("%s%s", kExcPrefix, exception_name);
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}
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bool StringToException(const base::StringPiece& string,
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StringToSymbolicConstantOptions options,
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exception_type_t* exception) {
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if ((options & kAllowFullName) || (options & kAllowShortName)) {
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bool can_match_full =
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(options & kAllowFullName) &&
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string.substr(0, strlen(kExcPrefix)).compare(kExcPrefix) == 0;
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base::StringPiece short_string =
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can_match_full ? string.substr(strlen(kExcPrefix)) : string;
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for (exception_type_t index = 0;
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index < implicit_cast<exception_type_t>(base::size(kExceptionNames));
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++index) {
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const char* exception_name = kExceptionNames[index];
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if (!exception_name) {
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continue;
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}
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if (can_match_full && short_string.compare(exception_name) == 0) {
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*exception = index;
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return true;
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}
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if ((options & kAllowShortName) && string.compare(exception_name) == 0) {
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*exception = index;
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return true;
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}
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}
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}
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if (options & kAllowNumber) {
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return StringToNumber(std::string(string.data(), string.length()),
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reinterpret_cast<unsigned int*>(exception));
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}
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return false;
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}
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std::string ExceptionMaskToString(exception_mask_t exception_mask,
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SymbolicConstantToStringOptions options) {
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exception_mask_t local_exception_mask = exception_mask;
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std::string mask_string;
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bool has_forbidden_or = false;
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for (size_t exception = 0; exception < base::size(kExceptionNames);
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++exception) {
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const char* exception_name = kExceptionNames[exception];
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exception_mask_t exception_mask_value = 1 << exception;
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if (exception_name && (local_exception_mask & exception_mask_value)) {
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if (!mask_string.empty()) {
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if (!(options & kUseOr)) {
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has_forbidden_or = true;
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break;
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}
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mask_string.append("|");
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}
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if (!(options & kUseShortName)) {
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mask_string.append(kExcMaskPrefix);
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}
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mask_string.append(exception_name);
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local_exception_mask &= ~exception_mask_value;
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}
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}
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if (has_forbidden_or) {
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local_exception_mask = exception_mask;
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mask_string.clear();
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}
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// Deal with any remainder.
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if (local_exception_mask) {
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if (!(options & kUnknownIsNumeric)) {
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return std::string();
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}
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if (!mask_string.empty()) {
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mask_string.append("|");
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}
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mask_string.append(base::StringPrintf("%#x", local_exception_mask));
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}
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return mask_string;
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}
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bool StringToExceptionMask(const base::StringPiece& string,
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StringToSymbolicConstantOptions options,
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exception_mask_t* exception_mask) {
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if (options & kAllowOr) {
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options &= ~kAllowOr;
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exception_mask_t build_mask = 0;
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size_t pos = -1;
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do {
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++pos;
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const char* substring_begin = string.begin() + pos;
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pos = string.find('|', pos);
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const char* substring_end = (pos == base::StringPiece::npos)
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? string.end()
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: (string.begin() + pos);
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base::StringPiece substring = string.substr(
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substring_begin - string.begin(), substring_end - substring_begin);
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exception_mask_t temp_mask;
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if (!StringToExceptionMask(substring, options, &temp_mask)) {
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return false;
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}
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build_mask |= temp_mask;
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} while (pos != base::StringPiece::npos);
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*exception_mask = build_mask;
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return true;
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}
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if ((options & kAllowFullName) || (options & kAllowShortName)) {
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bool can_match_full =
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(options & kAllowFullName) &&
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string.substr(0, strlen(kExcMaskPrefix)).compare(kExcMaskPrefix) == 0;
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base::StringPiece short_string =
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can_match_full ? string.substr(strlen(kExcMaskPrefix)) : string;
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for (exception_type_t index = 0;
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index < implicit_cast<exception_type_t>(base::size(kExceptionNames));
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++index) {
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const char* exception_name = kExceptionNames[index];
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if (!exception_name) {
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continue;
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}
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if (can_match_full && short_string.compare(exception_name) == 0) {
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*exception_mask = 1 << index;
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return true;
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}
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if ((options & kAllowShortName) && string.compare(exception_name) == 0) {
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*exception_mask = 1 << index;
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return true;
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}
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}
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// EXC_MASK_ALL is a special case: it is not in kExceptionNames as it exists
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// only as a mask value.
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static constexpr char kExcMaskAll[] = "ALL";
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if ((can_match_full && short_string.compare(kExcMaskAll) == 0) ||
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((options & kAllowShortName) && string.compare(kExcMaskAll) == 0)) {
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*exception_mask = ExcMaskAll();
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return true;
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}
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}
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if (options & kAllowNumber) {
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return StringToNumber(std::string(string.data(), string.length()),
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reinterpret_cast<unsigned int*>(exception_mask));
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|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string ExceptionBehaviorToString(exception_behavior_t behavior,
|
||
|
|
SymbolicConstantToStringOptions options) {
|
||
|
|
const exception_behavior_t basic_behavior = ExceptionBehaviorBasic(behavior);
|
||
|
|
|
||
|
|
const char* behavior_name =
|
||
|
|
implicit_cast<size_t>(basic_behavior) < base::size(kBehaviorNames)
|
||
|
|
? kBehaviorNames[basic_behavior]
|
||
|
|
: nullptr;
|
||
|
|
if (!behavior_name) {
|
||
|
|
if (options & kUnknownIsNumeric) {
|
||
|
|
return base::StringPrintf("%#x", behavior);
|
||
|
|
}
|
||
|
|
return std::string();
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string behavior_string;
|
||
|
|
if (options & kUseShortName) {
|
||
|
|
behavior_string.assign(behavior_name);
|
||
|
|
} else {
|
||
|
|
behavior_string.assign(base::StringPrintf(
|
||
|
|
"%s%s", kBehaviorPrefix, behavior_name));
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ExceptionBehaviorHasMachExceptionCodes(behavior)) {
|
||
|
|
behavior_string.append("|");
|
||
|
|
behavior_string.append((options & kUseShortName) ? kMachExceptionCodesShort
|
||
|
|
: kMachExceptionCodesFull);
|
||
|
|
}
|
||
|
|
|
||
|
|
return behavior_string;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool StringToExceptionBehavior(const base::StringPiece& string,
|
||
|
|
StringToSymbolicConstantOptions options,
|
||
|
|
exception_behavior_t* behavior) {
|
||
|
|
base::StringPiece sp = string;
|
||
|
|
exception_behavior_t build_behavior = 0;
|
||
|
|
size_t pos = sp.find('|', 0);
|
||
|
|
if (pos != base::StringPiece::npos) {
|
||
|
|
base::StringPiece left = sp.substr(0, pos);
|
||
|
|
base::StringPiece right = sp.substr(pos + 1, sp.length() - pos - 1);
|
||
|
|
if (options & kAllowFullName) {
|
||
|
|
if (left.compare(kMachExceptionCodesFull) == 0) {
|
||
|
|
build_behavior |= MACH_EXCEPTION_CODES;
|
||
|
|
sp = right;
|
||
|
|
} else if (right.compare(kMachExceptionCodesFull) == 0) {
|
||
|
|
build_behavior |= MACH_EXCEPTION_CODES;
|
||
|
|
sp = left;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!(build_behavior & MACH_EXCEPTION_CODES) &&
|
||
|
|
(options & kAllowShortName)) {
|
||
|
|
if (left.compare(kMachExceptionCodesShort) == 0) {
|
||
|
|
build_behavior |= MACH_EXCEPTION_CODES;
|
||
|
|
sp = right;
|
||
|
|
} else if (right.compare(kMachExceptionCodesShort) == 0) {
|
||
|
|
build_behavior |= MACH_EXCEPTION_CODES;
|
||
|
|
sp = left;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!(build_behavior & MACH_EXCEPTION_CODES)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((options & kAllowFullName) || (options & kAllowShortName)) {
|
||
|
|
bool can_match_full =
|
||
|
|
(options & kAllowFullName) &&
|
||
|
|
sp.substr(0, strlen(kBehaviorPrefix)).compare(kBehaviorPrefix) == 0;
|
||
|
|
base::StringPiece short_string =
|
||
|
|
can_match_full ? sp.substr(strlen(kBehaviorPrefix)) : sp;
|
||
|
|
for (exception_behavior_t index = 0;
|
||
|
|
index <
|
||
|
|
implicit_cast<exception_behavior_t>(base::size(kBehaviorNames));
|
||
|
|
++index) {
|
||
|
|
const char* behavior_name = kBehaviorNames[index];
|
||
|
|
if (!behavior_name) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (can_match_full && short_string.compare(behavior_name) == 0) {
|
||
|
|
build_behavior |= index;
|
||
|
|
*behavior = build_behavior;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if ((options & kAllowShortName) && sp.compare(behavior_name) == 0) {
|
||
|
|
build_behavior |= index;
|
||
|
|
*behavior = build_behavior;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options & kAllowNumber) {
|
||
|
|
exception_behavior_t temp_behavior;
|
||
|
|
if (!StringToNumber(std::string(sp.data(), sp.length()),
|
||
|
|
reinterpret_cast<unsigned int*>(&temp_behavior))) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
build_behavior |= temp_behavior;
|
||
|
|
*behavior = build_behavior;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string ThreadStateFlavorToString(thread_state_flavor_t flavor,
|
||
|
|
SymbolicConstantToStringOptions options) {
|
||
|
|
const char* flavor_name =
|
||
|
|
implicit_cast<size_t>(flavor) < base::size(kFlavorNames)
|
||
|
|
? kFlavorNames[flavor]
|
||
|
|
: nullptr;
|
||
|
|
|
||
|
|
if (!flavor_name) {
|
||
|
|
for (size_t generic_flavor_index = 0;
|
||
|
|
generic_flavor_index < base::size(kGenericFlavorNames);
|
||
|
|
++generic_flavor_index) {
|
||
|
|
if (flavor == kGenericFlavorNames[generic_flavor_index].flavor) {
|
||
|
|
flavor_name = kGenericFlavorNames[generic_flavor_index].name;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!flavor_name) {
|
||
|
|
if (options & kUnknownIsNumeric) {
|
||
|
|
return base::StringPrintf("%d", flavor);
|
||
|
|
}
|
||
|
|
return std::string();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options & kUseShortName) {
|
||
|
|
return ThreadStateFlavorFullToShort(flavor_name);
|
||
|
|
}
|
||
|
|
return std::string(flavor_name);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool StringToThreadStateFlavor(const base::StringPiece& string,
|
||
|
|
StringToSymbolicConstantOptions options,
|
||
|
|
thread_state_flavor_t* flavor) {
|
||
|
|
if ((options & kAllowFullName) || (options & kAllowShortName)) {
|
||
|
|
for (thread_state_flavor_t index = 0;
|
||
|
|
index < implicit_cast<thread_state_flavor_t>(base::size(kFlavorNames));
|
||
|
|
++index) {
|
||
|
|
const char* flavor_name = kFlavorNames[index];
|
||
|
|
if (!flavor_name) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if ((options & kAllowFullName) && string.compare(flavor_name) == 0) {
|
||
|
|
*flavor = index;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if (options & kAllowShortName) {
|
||
|
|
std::string short_name = ThreadStateFlavorFullToShort(flavor_name);
|
||
|
|
if (string.compare(short_name) == 0) {
|
||
|
|
*flavor = index;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for (size_t generic_flavor_index = 0;
|
||
|
|
generic_flavor_index < base::size(kGenericFlavorNames);
|
||
|
|
++generic_flavor_index) {
|
||
|
|
const char* flavor_name = kGenericFlavorNames[generic_flavor_index].name;
|
||
|
|
thread_state_flavor_t flavor_number =
|
||
|
|
kGenericFlavorNames[generic_flavor_index].flavor;
|
||
|
|
if ((options & kAllowFullName) && string.compare(flavor_name) == 0) {
|
||
|
|
*flavor = flavor_number;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if (options & kAllowShortName) {
|
||
|
|
std::string short_name = ThreadStateFlavorFullToShort(flavor_name);
|
||
|
|
if (string.compare(short_name) == 0) {
|
||
|
|
*flavor = flavor_number;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options & kAllowNumber) {
|
||
|
|
return StringToNumber(std::string(string.data(), string.length()),
|
||
|
|
reinterpret_cast<unsigned int*>(flavor));
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace crashpad
|