From 51b170b470ed587f99a7c2a773e4464687f0d07a Mon Sep 17 00:00:00 2001 From: crueter Date: Mon, 4 Aug 2025 04:50:14 +0200 Subject: [cmake] refactor: Use CPM over submodules (#143) Transfers the majority of submodules and large externals to CPM, using source archives rather than full Git clones. Not only does this save massive amounts of clone and configure time, but dependencies are grabbed on-demand rather than being required by default. Additionally, CPM will (generally) automatically search for system dependencies, though certain dependencies have options to control this. Testing shows gains ranging from 5x to 10x in terms of overall clone/configure time. Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/143 Reviewed-by: CamilleLaVey --- .../breakpad/src/processor/stackwalker_arm.cc | 302 --------------------- 1 file changed, 302 deletions(-) delete mode 100644 externals/breakpad/src/processor/stackwalker_arm.cc (limited to 'externals/breakpad/src/processor/stackwalker_arm.cc') diff --git a/externals/breakpad/src/processor/stackwalker_arm.cc b/externals/breakpad/src/processor/stackwalker_arm.cc deleted file mode 100644 index 5f6f3e8dae..0000000000 --- a/externals/breakpad/src/processor/stackwalker_arm.cc +++ /dev/null @@ -1,302 +0,0 @@ -// Copyright 2010 Google LLC -// -// 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 LLC 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. - -// stackwalker_arm.cc: arm-specific stackwalker. -// -// See stackwalker_arm.h for documentation. -// -// Author: Mark Mentovai, Ted Mielczarek, Jim Blandy - -#ifdef HAVE_CONFIG_H -#include // Must come first -#endif - -#include - -#include "common/scoped_ptr.h" -#include "google_breakpad/processor/call_stack.h" -#include "google_breakpad/processor/memory_region.h" -#include "google_breakpad/processor/source_line_resolver_interface.h" -#include "google_breakpad/processor/stack_frame_cpu.h" -#include "google_breakpad/processor/system_info.h" -#include "processor/cfi_frame_info.h" -#include "processor/logging.h" -#include "processor/stackwalker_arm.h" - -namespace google_breakpad { - - -StackwalkerARM::StackwalkerARM(const SystemInfo* system_info, - const MDRawContextARM* context, - int fp_register, - MemoryRegion* memory, - const CodeModules* modules, - StackFrameSymbolizer* resolver_helper) - : Stackwalker(system_info, memory, modules, resolver_helper), - context_(context), fp_register_(fp_register), - context_frame_validity_(StackFrameARM::CONTEXT_VALID_ALL) { } - - -StackFrame* StackwalkerARM::GetContextFrame() { - if (!context_) { - BPLOG(ERROR) << "Can't get context frame without context"; - return NULL; - } - - StackFrameARM* frame = new StackFrameARM(); - - // The instruction pointer is stored directly in a register (r15), so pull it - // straight out of the CPU context structure. - frame->context = *context_; - frame->context_validity = context_frame_validity_; - frame->trust = StackFrame::FRAME_TRUST_CONTEXT; - frame->instruction = frame->context.iregs[MD_CONTEXT_ARM_REG_PC]; - - return frame; -} - -StackFrameARM* StackwalkerARM::GetCallerByCFIFrameInfo( - const vector& frames, - CFIFrameInfo* cfi_frame_info) { - StackFrameARM* last_frame = static_cast(frames.back()); - - static const char* register_names[] = { - "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", - NULL - }; - - // Populate a dictionary with the valid register values in last_frame. - CFIFrameInfo::RegisterValueMap callee_registers; - for (int i = 0; register_names[i]; i++) - if (last_frame->context_validity & StackFrameARM::RegisterValidFlag(i)) - callee_registers[register_names[i]] = last_frame->context.iregs[i]; - - // Use the STACK CFI data to recover the caller's register values. - CFIFrameInfo::RegisterValueMap caller_registers; - if (!cfi_frame_info->FindCallerRegs(callee_registers, *memory_, - &caller_registers)) - return NULL; - - // Construct a new stack frame given the values the CFI recovered. - scoped_ptr frame(new StackFrameARM()); - for (int i = 0; register_names[i]; i++) { - CFIFrameInfo::RegisterValueMap::iterator entry = - caller_registers.find(register_names[i]); - if (entry != caller_registers.end()) { - // We recovered the value of this register; fill the context with the - // value from caller_registers. - frame->context_validity |= StackFrameARM::RegisterValidFlag(i); - frame->context.iregs[i] = entry->second; - } else if (4 <= i && i <= 11 && (last_frame->context_validity & - StackFrameARM::RegisterValidFlag(i))) { - // If the STACK CFI data doesn't mention some callee-saves register, and - // it is valid in the callee, assume the callee has not yet changed it. - // Registers r4 through r11 are callee-saves, according to the Procedure - // Call Standard for the ARM Architecture, which the Linux ABI follows. - frame->context_validity |= StackFrameARM::RegisterValidFlag(i); - frame->context.iregs[i] = last_frame->context.iregs[i]; - } - } - // If the CFI doesn't recover the PC explicitly, then use .ra. - if (!(frame->context_validity & StackFrameARM::CONTEXT_VALID_PC)) { - CFIFrameInfo::RegisterValueMap::iterator entry = - caller_registers.find(".ra"); - if (entry != caller_registers.end()) { - if (fp_register_ == -1) { - frame->context_validity |= StackFrameARM::CONTEXT_VALID_PC; - frame->context.iregs[MD_CONTEXT_ARM_REG_PC] = entry->second; - } else { - // The CFI updated the link register and not the program counter. - // Handle getting the program counter from the link register. - frame->context_validity |= StackFrameARM::CONTEXT_VALID_PC; - frame->context_validity |= StackFrameARM::CONTEXT_VALID_LR; - frame->context.iregs[MD_CONTEXT_ARM_REG_LR] = entry->second; - frame->context.iregs[MD_CONTEXT_ARM_REG_PC] = - last_frame->context.iregs[MD_CONTEXT_ARM_REG_LR]; - } - } - } - // If the CFI doesn't recover the SP explicitly, then use .cfa. - if (!(frame->context_validity & StackFrameARM::CONTEXT_VALID_SP)) { - CFIFrameInfo::RegisterValueMap::iterator entry = - caller_registers.find(".cfa"); - if (entry != caller_registers.end()) { - frame->context_validity |= StackFrameARM::CONTEXT_VALID_SP; - frame->context.iregs[MD_CONTEXT_ARM_REG_SP] = entry->second; - } - } - - // If we didn't recover the PC and the SP, then the frame isn't very useful. - static const int essentials = (StackFrameARM::CONTEXT_VALID_SP - | StackFrameARM::CONTEXT_VALID_PC); - if ((frame->context_validity & essentials) != essentials) - return NULL; - - frame->trust = StackFrame::FRAME_TRUST_CFI; - return frame.release(); -} - -StackFrameARM* StackwalkerARM::GetCallerByStackScan( - const vector& frames) { - StackFrameARM* last_frame = static_cast(frames.back()); - uint32_t last_sp = last_frame->context.iregs[MD_CONTEXT_ARM_REG_SP]; - uint32_t caller_sp, caller_pc; - - if (!ScanForReturnAddress(last_sp, &caller_sp, &caller_pc, - /*is_context_frame=*/last_frame->trust == - StackFrame::FRAME_TRUST_CONTEXT)) { - // No plausible return address was found. - return NULL; - } - - // ScanForReturnAddress found a reasonable return address. Advance - // %sp to the location above the one where the return address was - // found. - caller_sp += 4; - - // Create a new stack frame (ownership will be transferred to the caller) - // and fill it in. - StackFrameARM* frame = new StackFrameARM(); - - frame->trust = StackFrame::FRAME_TRUST_SCAN; - frame->context = last_frame->context; - frame->context.iregs[MD_CONTEXT_ARM_REG_PC] = caller_pc; - frame->context.iregs[MD_CONTEXT_ARM_REG_SP] = caller_sp; - frame->context_validity = StackFrameARM::CONTEXT_VALID_PC | - StackFrameARM::CONTEXT_VALID_SP; - - return frame; -} - -StackFrameARM* StackwalkerARM::GetCallerByFramePointer( - const vector& frames) { - StackFrameARM* last_frame = static_cast(frames.back()); - - if (!(last_frame->context_validity & - StackFrameARM::RegisterValidFlag(fp_register_))) { - return NULL; - } - - uint32_t last_fp = last_frame->context.iregs[fp_register_]; - - uint32_t caller_fp = 0; - if (last_fp && !memory_->GetMemoryAtAddress(last_fp, &caller_fp)) { - BPLOG(ERROR) << "Unable to read caller_fp from last_fp: 0x" - << std::hex << last_fp; - return NULL; - } - - uint32_t caller_lr = 0; - if (last_fp && !memory_->GetMemoryAtAddress(last_fp + 4, &caller_lr)) { - BPLOG(ERROR) << "Unable to read caller_lr from last_fp + 4: 0x" - << std::hex << (last_fp + 4); - return NULL; - } - - uint32_t caller_sp = last_fp ? last_fp + 8 : - last_frame->context.iregs[MD_CONTEXT_ARM_REG_SP]; - - // Create a new stack frame (ownership will be transferred to the caller) - // and fill it in. - StackFrameARM* frame = new StackFrameARM(); - - frame->trust = StackFrame::FRAME_TRUST_FP; - frame->context = last_frame->context; - frame->context.iregs[fp_register_] = caller_fp; - frame->context.iregs[MD_CONTEXT_ARM_REG_SP] = caller_sp; - frame->context.iregs[MD_CONTEXT_ARM_REG_PC] = - last_frame->context.iregs[MD_CONTEXT_ARM_REG_LR]; - frame->context.iregs[MD_CONTEXT_ARM_REG_LR] = caller_lr; - frame->context_validity = StackFrameARM::CONTEXT_VALID_PC | - StackFrameARM::CONTEXT_VALID_LR | - StackFrameARM::RegisterValidFlag(fp_register_) | - StackFrameARM::CONTEXT_VALID_SP; - return frame; -} - -StackFrame* StackwalkerARM::GetCallerFrame(const CallStack* stack, - bool stack_scan_allowed) { - if (!memory_ || !stack) { - BPLOG(ERROR) << "Can't get caller frame without memory or stack"; - return NULL; - } - - const vector& frames = *stack->frames(); - StackFrameARM* last_frame = static_cast(frames.back()); - scoped_ptr frame; - - // See if there is DWARF call frame information covering this address. - // TODO(jperaza): Ignore iOS CFI info until it is properly collected. - // https://bugs.chromium.org/p/google-breakpad/issues/detail?id=764 - if (!system_info_ || system_info_->os != "iOS") { - scoped_ptr cfi_frame_info( - frame_symbolizer_->FindCFIFrameInfo(last_frame)); - if (cfi_frame_info.get()) - frame.reset(GetCallerByCFIFrameInfo(frames, cfi_frame_info.get())); - } - - // If CFI failed, or there wasn't CFI available, fall back - // to frame pointer, if this is configured. - if (fp_register_ >= 0 && !frame.get()) - frame.reset(GetCallerByFramePointer(frames)); - - // If everuthing failed, fall back to stack scanning. - if (stack_scan_allowed && !frame.get()) - frame.reset(GetCallerByStackScan(frames)); - - // If nothing worked, tell the caller. - if (!frame.get()) - return NULL; - - // Should we terminate the stack walk? (end-of-stack or broken invariant) - if (TerminateWalk(frame->context.iregs[MD_CONTEXT_ARM_REG_PC], - frame->context.iregs[MD_CONTEXT_ARM_REG_SP], - last_frame->context.iregs[MD_CONTEXT_ARM_REG_SP], - /*first_unwind=*/last_frame->trust == - StackFrame::FRAME_TRUST_CONTEXT)) { - return NULL; - } - - // The new frame's context's PC is the return address, which is one - // instruction past the instruction that caused us to arrive at the - // callee. Set new_frame->instruction to one less than the PC. This won't - // reference the beginning of the call instruction, but it's at least - // within it, which is sufficient to get the source line information to - // match up with the line that contains the function call. Callers that - // require the exact return address value may access - // frame->context.iregs[MD_CONTEXT_ARM_REG_PC]. - frame->instruction = frame->context.iregs[MD_CONTEXT_ARM_REG_PC] - 2; - - return frame.release(); -} - - -} // namespace google_breakpad -- cgit v1.2.3