RegisterContextWindows_i386.cpp revision 360784 
1//===-- RegisterContextWindows_i386.cpp -------------------------*- 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-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "RegisterContextWindows_i386.h"
10#include "RegisterContext_x86.h"
11#include "lldb-x86-register-enums.h"
12
13using namespace lldb_private;
14using namespace lldb;
15
16namespace {
17// Declare our g_register_infos structure.
18typedef struct _GPR {
19  uint32_t eax;
20  uint32_t ebx;
21  uint32_t ecx;
22  uint32_t edx;
23  uint32_t edi;
24  uint32_t esi;
25  uint32_t ebp;
26  uint32_t esp;
27  uint32_t eip;
28  uint32_t eflags;
29  uint32_t cs;
30  uint32_t fs;
31  uint32_t gs;
32  uint32_t ss;
33  uint32_t ds;
34  uint32_t es;
35} GPR;
36
37#define GPR_OFFSET(regname) (LLVM_EXTENSION offsetof(GPR, regname))
38
39#define DEFINE_GPR(reg, alt, kind1, kind2, kind3, kind4)                       \
40  {                                                                            \
41#reg, alt, sizeof(((GPR *)nullptr)->reg), GPR_OFFSET(reg), eEncodingUint,  \
42        eFormatHex,                                                            \
43        {kind1, kind2, kind3, kind4, lldb_##reg##_i386 }, nullptr, nullptr,    \
44         nullptr, 0                                                            \
45  }
46
47// clang-format off
48static RegisterInfo g_register_infos_i386[] = {
49// General purpose registers     EH_Frame              DWARF                 Generic                     Process Plugin
50//  ===========================  ==================    ================      =========================   ====================
51    DEFINE_GPR(eax,   nullptr,   ehframe_eax_i386,     dwarf_eax_i386,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
52    DEFINE_GPR(ebx,   nullptr,   ehframe_ebx_i386,     dwarf_ebx_i386,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
53    DEFINE_GPR(ecx,   nullptr,   ehframe_ecx_i386,     dwarf_ecx_i386,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
54    DEFINE_GPR(edx,   nullptr,   ehframe_edx_i386,     dwarf_edx_i386,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
55    DEFINE_GPR(edi,   nullptr,   ehframe_edi_i386,     dwarf_edi_i386,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
56    DEFINE_GPR(esi,   nullptr,   ehframe_esi_i386,     dwarf_esi_i386,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
57    DEFINE_GPR(ebp,   "fp",      ehframe_ebp_i386,     dwarf_ebp_i386,       LLDB_REGNUM_GENERIC_FP,     LLDB_INVALID_REGNUM),
58    DEFINE_GPR(esp,   "sp",      ehframe_esp_i386,     dwarf_esp_i386,       LLDB_REGNUM_GENERIC_SP,     LLDB_INVALID_REGNUM),
59    DEFINE_GPR(eip,   "pc",      ehframe_eip_i386,     dwarf_eip_i386,       LLDB_REGNUM_GENERIC_PC,     LLDB_INVALID_REGNUM),
60    DEFINE_GPR(eflags, "flags",  ehframe_eflags_i386,  dwarf_eflags_i386,    LLDB_REGNUM_GENERIC_FLAGS,  LLDB_INVALID_REGNUM),
61    DEFINE_GPR(cs,     nullptr,  LLDB_INVALID_REGNUM,  dwarf_cs_i386,        LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
62    DEFINE_GPR(fs,     nullptr,  LLDB_INVALID_REGNUM,  dwarf_fs_i386,        LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
63    DEFINE_GPR(gs,     nullptr,  LLDB_INVALID_REGNUM,  dwarf_gs_i386,        LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
64    DEFINE_GPR(ss,     nullptr,  LLDB_INVALID_REGNUM,  dwarf_ss_i386,        LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
65    DEFINE_GPR(ds,     nullptr,  LLDB_INVALID_REGNUM,  dwarf_ds_i386,        LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
66    DEFINE_GPR(es,     nullptr,  LLDB_INVALID_REGNUM,  dwarf_es_i386,        LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM),
67};
68// clang-format on
69} // namespace
70
71RegisterContextWindows_i386::RegisterContextWindows_i386(
72    const ArchSpec &target_arch)
73    : lldb_private::RegisterInfoInterface(target_arch) {
74  assert(target_arch.GetMachine() == llvm::Triple::x86);
75}
76
77const RegisterInfo *RegisterContextWindows_i386::GetRegisterInfo() const {
78  return g_register_infos_i386;
79}
80
81uint32_t RegisterContextWindows_i386::GetRegisterCount() const {
82  return llvm::array_lengthof(g_register_infos_i386);
83}
84
85uint32_t RegisterContextWindows_i386::GetUserRegisterCount() const {
86  return llvm::array_lengthof(g_register_infos_i386);
87}
88
89size_t RegisterContextWindows_i386::GetGPRSize() const { return sizeof(GPR); }
90