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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/arm_ex_to_module.cc')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/arm_ex_to_module.cc | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/arm_ex_to_module.cc b/toolkit/crashreporter/google-breakpad/src/common/arm_ex_to_module.cc deleted file mode 100644 index c326744f6..000000000 --- a/toolkit/crashreporter/google-breakpad/src/common/arm_ex_to_module.cc +++ /dev/null @@ -1,209 +0,0 @@ - -/* libunwind - a platform-independent unwind library - Copyright 2011 Linaro Limited - -This file is part of libunwind. - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice shall be -included in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE -LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION -OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ - -// Copyright (c) 2010 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. - - -// Derived from libunwind, with extensive modifications. - -#include "common/arm_ex_to_module.h" - -#include <stdio.h> -#include <assert.h> - -// For big-picture comments on how the EXIDX reader works, -// see arm_ex_reader.cc. - -#define ARM_EXBUF_START(x) (((x) >> 4) & 0x0f) -#define ARM_EXBUF_COUNT(x) ((x) & 0x0f) -#define ARM_EXBUF_END(x) (ARM_EXBUF_START(x) + ARM_EXBUF_COUNT(x)) - -using google_breakpad::Module; - -namespace arm_ex_to_module { - -static const char* const regnames[] = { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc", - "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", - "fps", "cpsr" -}; - -// Translate command from extab_data to command for Module. -int ARMExToModule::TranslateCmd(const struct extab_data* edata, - Module::StackFrameEntry* entry, string& vsp) { - int ret = 0; - switch (edata->cmd) { - case ARM_EXIDX_CMD_FINISH: - /* Copy LR to PC if there isn't currently a rule for PC in force. */ - if (entry->initial_rules.find("pc") - == entry->initial_rules.end()) { - if (entry->initial_rules.find("lr") - == entry->initial_rules.end()) { - entry->initial_rules["pc"] = "lr"; - } else { - entry->initial_rules["pc"] = entry->initial_rules["lr"]; - } - } - break; - case ARM_EXIDX_CMD_SUB_FROM_VSP: - { - char c[16]; - sprintf(c, " %d -", edata->data); - vsp += c; - } - break; - case ARM_EXIDX_CMD_ADD_TO_VSP: - { - char c[16]; - sprintf(c, " %d +", edata->data); - vsp += c; - } - break; - case ARM_EXIDX_CMD_REG_POP: - for (unsigned int i = 0; i < 16; i++) { - if (edata->data & (1 << i)) { - entry->initial_rules[regnames[i]] - = vsp + " ^"; - vsp += " 4 +"; - } - } - /* Set cfa in case the SP got popped. */ - if (edata->data & (1 << 13)) { - vsp = entry->initial_rules["sp"]; - } - break; - case ARM_EXIDX_CMD_REG_TO_SP: { - assert (edata->data < 16); - const char* const regname = regnames[edata->data]; - if (entry->initial_rules.find(regname) == entry->initial_rules.end()) { - entry->initial_rules["sp"] = regname; - } else { - entry->initial_rules["sp"] = entry->initial_rules[regname]; - } - vsp = entry->initial_rules["sp"]; - break; - } - case ARM_EXIDX_CMD_VFP_POP: - /* Don't recover VFP registers, but be sure to adjust the stack - pointer. */ - for (unsigned int i = ARM_EXBUF_START(edata->data); - i <= ARM_EXBUF_END(edata->data); i++) { - vsp += " 8 +"; - } - if (!(edata->data & ARM_EXIDX_VFP_FSTMD)) { - vsp += " 4 +"; - } - break; - case ARM_EXIDX_CMD_WREG_POP: - for (unsigned int i = ARM_EXBUF_START(edata->data); - i <= ARM_EXBUF_END(edata->data); i++) { - vsp += " 8 +"; - } - break; - case ARM_EXIDX_CMD_WCGR_POP: - // Pop wCGR registers under mask {wCGR3,2,1,0}, hence "i < 4" - for (unsigned int i = 0; i < 4; i++) { - if (edata->data & (1 << i)) { - vsp += " 4 +"; - } - } - break; - case ARM_EXIDX_CMD_REFUSED: - case ARM_EXIDX_CMD_RESERVED: - ret = -1; - break; - } - return ret; -} - -bool ARMExToModule::HasStackFrame(uintptr_t addr, size_t size) { - // Invariant: the range [addr,covered) is covered by existing stack - // frame entries. - uintptr_t covered = addr; - while (covered < addr + size) { - const Module::StackFrameEntry *old_entry = - module_->FindStackFrameEntryByAddress(covered); - if (!old_entry) { - return false; - } - covered = old_entry->address + old_entry->size; - } - return true; -} - -void ARMExToModule::AddStackFrame(uintptr_t addr, size_t size) { - stack_frame_entry_ = new Module::StackFrameEntry; - stack_frame_entry_->address = addr; - stack_frame_entry_->size = size; - stack_frame_entry_->initial_rules[".cfa"] = "sp"; - vsp_ = "sp"; -} - -int ARMExToModule::ImproveStackFrame(const struct extab_data* edata) { - return TranslateCmd(edata, stack_frame_entry_, vsp_) ; -} - -void ARMExToModule::DeleteStackFrame() { - delete stack_frame_entry_; -} - -void ARMExToModule::SubmitStackFrame() { - // return address always winds up in pc - stack_frame_entry_->initial_rules[".ra"] - = stack_frame_entry_->initial_rules["pc"]; - // the final value of vsp is the new value of sp - stack_frame_entry_->initial_rules["sp"] = vsp_; - module_->AddStackFrameEntry(stack_frame_entry_); -} - -} // namespace arm_ex_to_module |