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1//===-- RegisterContextMinidump_x86_32.h ------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_X86_32_H10#define LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_X86_32_H11 12#include "MinidumpTypes.h"13 14#include "Plugins/Process/Utility/RegisterInfoInterface.h"15#include "Plugins/Process/Utility/lldb-x86-register-enums.h"16 17#include "lldb/Target/RegisterContext.h"18 19#include "llvm/ADT/ArrayRef.h"20#include "llvm/ADT/BitmaskEnum.h"21#include "llvm/Support/Endian.h"22 23// C includes24// C++ includes25 26namespace lldb_private {27 28namespace minidump {29 30// This function receives an ArrayRef pointing to the bytes of the Minidump31// register context and returns a DataBuffer that's ordered by the offsets32// specified in the RegisterInfoInterface argument33// This way we can reuse the already existing register contexts34lldb::DataBufferSP35ConvertMinidumpContext_x86_32(llvm::ArrayRef<uint8_t> source_data,36 RegisterInfoInterface *target_reg_interface);37 38// Reference: see breakpad/crashpad source or WinNT.h39struct MinidumpFloatingSaveAreaX86 {40 llvm::support::ulittle32_t control_word;41 llvm::support::ulittle32_t status_word;42 llvm::support::ulittle32_t tag_word;43 llvm::support::ulittle32_t error_offset;44 llvm::support::ulittle32_t error_selector;45 llvm::support::ulittle32_t data_offset;46 llvm::support::ulittle32_t data_selector;47 48 enum {49 RegisterAreaSize = 80,50 };51 // register_area contains eight 80-bit (x87 "long double") quantities for52 // floating-point registers %st0 (%mm0) through %st7 (%mm7).53 uint8_t register_area[RegisterAreaSize];54 llvm::support::ulittle32_t cr0_npx_state;55};56 57struct MinidumpContext_x86_32 {58 // The context_flags field determines which parts59 // of the structure are populated (have valid values)60 llvm::support::ulittle32_t context_flags;61 62 // The next 6 registers are included with63 // MinidumpContext_x86_32_Flags::DebugRegisters64 llvm::support::ulittle32_t dr0;65 llvm::support::ulittle32_t dr1;66 llvm::support::ulittle32_t dr2;67 llvm::support::ulittle32_t dr3;68 llvm::support::ulittle32_t dr6;69 llvm::support::ulittle32_t dr7;70 71 // The next field is included with72 // MinidumpContext_x86_32_Flags::FloatingPoint73 MinidumpFloatingSaveAreaX86 float_save;74 75 // The next 4 registers are included with76 // MinidumpContext_x86_32_Flags::Segments77 llvm::support::ulittle32_t gs;78 llvm::support::ulittle32_t fs;79 llvm::support::ulittle32_t es;80 llvm::support::ulittle32_t ds;81 82 // The next 6 registers are included with83 // MinidumpContext_x86_32_Flags::Integer84 llvm::support::ulittle32_t edi;85 llvm::support::ulittle32_t esi;86 llvm::support::ulittle32_t ebx;87 llvm::support::ulittle32_t edx;88 llvm::support::ulittle32_t ecx;89 llvm::support::ulittle32_t eax;90 91 // The next 6 registers are included with92 // MinidumpContext_x86_32_Flags::Control93 llvm::support::ulittle32_t ebp;94 llvm::support::ulittle32_t eip;95 llvm::support::ulittle32_t cs; // WinNT.h says "must be sanitized"96 llvm::support::ulittle32_t eflags; // WinNT.h says "must be sanitized"97 llvm::support::ulittle32_t esp;98 llvm::support::ulittle32_t ss;99 100 // The next field is included with101 // MinidumpContext_x86_32_Flags::ExtendedRegisters102 // It contains vector (MMX/SSE) registers. It is laid out in the103 // format used by the fxsave and fsrstor instructions, so it includes104 // a copy of the x87 floating-point registers as well. See FXSAVE in105 // "Intel Architecture Software Developer's Manual, Volume 2."106 enum {107 ExtendedRegistersSize = 512,108 };109 uint8_t extended_registers[ExtendedRegistersSize];110};111 112LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE();113 114// For context_flags. These values indicate the type of115// context stored in the structure. The high 24 bits identify the CPU, the116// low 8 bits identify the type of context saved.117enum class MinidumpContext_x86_32_Flags : uint32_t {118 x86_32_Flag = 0x00010000, // CONTEXT_i386, CONTEXT_i486119 Control = x86_32_Flag | 0x00000001,120 Integer = x86_32_Flag | 0x00000002,121 Segments = x86_32_Flag | 0x00000004,122 FloatingPoint = x86_32_Flag | 0x00000008,123 DebugRegisters = x86_32_Flag | 0x00000010,124 ExtendedRegisters = x86_32_Flag | 0x00000020,125 XState = x86_32_Flag | 0x00000040,126 127 Full = Control | Integer | Segments,128 All = Full | FloatingPoint | DebugRegisters | ExtendedRegisters,129 130 LLVM_MARK_AS_BITMASK_ENUM(/* LargestValue = */ All)131};132 133} // end namespace minidump134} // end namespace lldb_private135#endif // LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_X86_32_H136