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annotate third_party/luajit/src/lj_gdbjit.c @ 279:b3b547563ec7
Add Google connector service and agent wiki
Implement the C/Seobeo Google Drive and Gmail connector with encrypted OAuth storage, Zenbu authentication, browser testing, AI tool discovery, chunked HTTP decoding, and Bazel coverage. Consolidate repository guidance into progressive wiki documentation and enforce arena-first allocation for new first-party C code.
Co-authored-by: Copilot <[email protected]>
Copilot-Session: 84c338fd-0939-4bb3-b7f3-1062eb213e5d
| author | MrJuneJune <me@mrjunejune.com> |
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| date | Mon, 17 Aug 2026 22:22:36 -0700 |
| parents | 94705b5986b3 |
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| rev | line source |
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1 /* |
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2 ** Client for the GDB JIT API. |
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3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h |
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4 */ |
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5 |
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6 #define lj_gdbjit_c |
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7 #define LUA_CORE |
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8 |
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9 #include "lj_obj.h" |
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10 |
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11 #if LJ_HASJIT |
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12 |
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13 #include "lj_gc.h" |
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14 #include "lj_err.h" |
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15 #include "lj_debug.h" |
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16 #include "lj_frame.h" |
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17 #include "lj_buf.h" |
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18 #include "lj_strfmt.h" |
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19 #include "lj_jit.h" |
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20 #include "lj_dispatch.h" |
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21 |
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22 /* This is not compiled in by default. |
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23 ** Enable with -DLUAJIT_USE_GDBJIT in the Makefile and recompile everything. |
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24 */ |
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25 #ifdef LUAJIT_USE_GDBJIT |
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26 |
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27 /* The GDB JIT API allows JIT compilers to pass debug information about |
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28 ** JIT-compiled code back to GDB. You need at least GDB 7.0 or higher |
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29 ** to see it in action. |
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30 ** |
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31 ** This is a passive API, so it works even when not running under GDB |
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32 ** or when attaching to an already running process. Alas, this implies |
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33 ** enabling it always has a non-negligible overhead -- do not use in |
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34 ** release mode! |
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35 ** |
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36 ** The LuaJIT GDB JIT client is rather minimal at the moment. It gives |
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37 ** each trace a symbol name and adds a source location and frame unwind |
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38 ** information. Obviously LuaJIT itself and any embedding C application |
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39 ** should be compiled with debug symbols, too (see the Makefile). |
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40 ** |
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41 ** Traces are named TRACE_1, TRACE_2, ... these correspond to the trace |
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42 ** numbers from -jv or -jdump. Use "break TRACE_1" or "tbreak TRACE_1" etc. |
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43 ** to set breakpoints on specific traces (even ahead of their creation). |
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44 ** |
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45 ** The source location for each trace allows listing the corresponding |
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46 ** source lines with the GDB command "list" (but only if the Lua source |
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47 ** has been loaded from a file). Currently this is always set to the |
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48 ** location where the trace has been started. |
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49 ** |
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50 ** Frame unwind information can be inspected with the GDB command |
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51 ** "info frame". This also allows proper backtraces across JIT-compiled |
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52 ** code with the GDB command "bt". |
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53 ** |
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54 ** You probably want to add the following settings to a .gdbinit file |
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55 ** (or add them to ~/.gdbinit): |
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56 ** set disassembly-flavor intel |
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57 ** set breakpoint pending on |
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58 ** |
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59 ** Here's a sample GDB session: |
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60 ** ------------------------------------------------------------------------ |
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61 |
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62 $ cat >x.lua |
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63 for outer=1,100 do |
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64 for inner=1,100 do end |
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65 end |
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66 ^D |
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67 |
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68 $ luajit -jv x.lua |
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69 [TRACE 1 x.lua:2] |
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70 [TRACE 2 (1/3) x.lua:1 -> 1] |
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71 |
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72 $ gdb --quiet --args luajit x.lua |
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73 (gdb) tbreak TRACE_1 |
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74 Function "TRACE_1" not defined. |
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75 Temporary breakpoint 1 (TRACE_1) pending. |
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76 (gdb) run |
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77 Starting program: luajit x.lua |
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78 |
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79 Temporary breakpoint 1, TRACE_1 () at x.lua:2 |
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80 2 for inner=1,100 do end |
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81 (gdb) list |
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82 1 for outer=1,100 do |
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83 2 for inner=1,100 do end |
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84 3 end |
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85 (gdb) bt |
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86 #0 TRACE_1 () at x.lua:2 |
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87 #1 0x08053690 in lua_pcall [...] |
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88 [...] |
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89 #7 0x0806ff90 in main [...] |
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90 (gdb) disass TRACE_1 |
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91 Dump of assembler code for function TRACE_1: |
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92 0xf7fd9fba <TRACE_1+0>: mov DWORD PTR ds:0xf7e0e2a0,0x1 |
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93 0xf7fd9fc4 <TRACE_1+10>: movsd xmm7,QWORD PTR [edx+0x20] |
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94 [...] |
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95 0xf7fd9ff8 <TRACE_1+62>: jmp 0xf7fd2014 |
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96 End of assembler dump. |
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97 (gdb) tbreak TRACE_2 |
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98 Function "TRACE_2" not defined. |
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99 Temporary breakpoint 2 (TRACE_2) pending. |
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100 (gdb) cont |
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101 Continuing. |
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102 |
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103 Temporary breakpoint 2, TRACE_2 () at x.lua:1 |
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104 1 for outer=1,100 do |
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105 (gdb) info frame |
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106 Stack level 0, frame at 0xffffd7c0: |
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107 eip = 0xf7fd9f60 in TRACE_2 (x.lua:1); saved eip 0x8053690 |
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108 called by frame at 0xffffd7e0 |
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109 source language unknown. |
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110 Arglist at 0xffffd78c, args: |
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111 Locals at 0xffffd78c, Previous frame's sp is 0xffffd7c0 |
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112 Saved registers: |
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113 ebx at 0xffffd7ac, ebp at 0xffffd7b8, esi at 0xffffd7b0, edi at 0xffffd7b4, |
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114 eip at 0xffffd7bc |
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115 (gdb) |
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116 |
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117 ** ------------------------------------------------------------------------ |
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118 */ |
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119 |
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120 /* -- GDB JIT API --------------------------------------------------------- */ |
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121 |
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122 /* GDB JIT actions. */ |
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123 enum { |
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124 GDBJIT_NOACTION = 0, |
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125 GDBJIT_REGISTER, |
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126 GDBJIT_UNREGISTER |
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127 }; |
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128 |
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129 /* GDB JIT entry. */ |
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130 typedef struct GDBJITentry { |
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131 struct GDBJITentry *next_entry; |
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132 struct GDBJITentry *prev_entry; |
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133 const char *symfile_addr; |
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134 uint64_t symfile_size; |
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135 } GDBJITentry; |
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136 |
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137 /* GDB JIT descriptor. */ |
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138 typedef struct GDBJITdesc { |
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139 uint32_t version; |
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140 uint32_t action_flag; |
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141 GDBJITentry *relevant_entry; |
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142 GDBJITentry *first_entry; |
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143 } GDBJITdesc; |
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144 |
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145 GDBJITdesc __jit_debug_descriptor = { |
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146 1, GDBJIT_NOACTION, NULL, NULL |
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147 }; |
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148 |
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149 /* GDB sets a breakpoint at this function. */ |
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150 void LJ_NOINLINE __jit_debug_register_code() |
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151 { |
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152 __asm__ __volatile__(""); |
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153 }; |
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154 |
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155 /* -- In-memory ELF object definitions ------------------------------------ */ |
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156 |
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157 /* ELF definitions. */ |
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158 typedef struct ELFheader { |
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159 uint8_t emagic[4]; |
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160 uint8_t eclass; |
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161 uint8_t eendian; |
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162 uint8_t eversion; |
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163 uint8_t eosabi; |
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164 uint8_t eabiversion; |
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165 uint8_t epad[7]; |
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166 uint16_t type; |
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167 uint16_t machine; |
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168 uint32_t version; |
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169 uintptr_t entry; |
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170 uintptr_t phofs; |
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171 uintptr_t shofs; |
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172 uint32_t flags; |
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173 uint16_t ehsize; |
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174 uint16_t phentsize; |
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175 uint16_t phnum; |
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176 uint16_t shentsize; |
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177 uint16_t shnum; |
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178 uint16_t shstridx; |
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179 } ELFheader; |
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180 |
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181 typedef struct ELFsectheader { |
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182 uint32_t name; |
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183 uint32_t type; |
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184 uintptr_t flags; |
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185 uintptr_t addr; |
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186 uintptr_t ofs; |
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187 uintptr_t size; |
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188 uint32_t link; |
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189 uint32_t info; |
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190 uintptr_t align; |
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191 uintptr_t entsize; |
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192 } ELFsectheader; |
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193 |
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194 #define ELFSECT_IDX_ABS 0xfff1 |
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195 |
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196 enum { |
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197 ELFSECT_TYPE_PROGBITS = 1, |
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198 ELFSECT_TYPE_SYMTAB = 2, |
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199 ELFSECT_TYPE_STRTAB = 3, |
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200 ELFSECT_TYPE_NOBITS = 8 |
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201 }; |
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202 |
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203 #define ELFSECT_FLAGS_WRITE 1 |
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204 #define ELFSECT_FLAGS_ALLOC 2 |
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205 #define ELFSECT_FLAGS_EXEC 4 |
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206 |
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207 typedef struct ELFsymbol { |
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208 #if LJ_64 |
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209 uint32_t name; |
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210 uint8_t info; |
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211 uint8_t other; |
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212 uint16_t sectidx; |
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213 uintptr_t value; |
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214 uint64_t size; |
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215 #else |
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216 uint32_t name; |
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217 uintptr_t value; |
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218 uint32_t size; |
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219 uint8_t info; |
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220 uint8_t other; |
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221 uint16_t sectidx; |
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222 #endif |
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223 } ELFsymbol; |
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224 |
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225 enum { |
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226 ELFSYM_TYPE_FUNC = 2, |
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227 ELFSYM_TYPE_FILE = 4, |
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228 ELFSYM_BIND_LOCAL = 0 << 4, |
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229 ELFSYM_BIND_GLOBAL = 1 << 4, |
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230 }; |
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231 |
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232 /* DWARF definitions. */ |
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233 #define DW_CIE_VERSION 1 |
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234 |
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235 enum { |
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236 DW_CFA_nop = 0x0, |
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237 DW_CFA_offset_extended = 0x5, |
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238 DW_CFA_def_cfa = 0xc, |
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239 DW_CFA_def_cfa_offset = 0xe, |
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240 DW_CFA_offset_extended_sf = 0x11, |
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241 DW_CFA_advance_loc = 0x40, |
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242 DW_CFA_offset = 0x80 |
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243 }; |
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244 |
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245 enum { |
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246 DW_EH_PE_udata4 = 3, |
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247 DW_EH_PE_textrel = 0x20 |
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248 }; |
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249 |
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250 enum { |
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251 DW_TAG_compile_unit = 0x11 |
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252 }; |
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253 |
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254 enum { |
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255 DW_children_no = 0, |
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256 DW_children_yes = 1 |
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257 }; |
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258 |
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259 enum { |
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260 DW_AT_name = 0x03, |
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261 DW_AT_stmt_list = 0x10, |
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262 DW_AT_low_pc = 0x11, |
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263 DW_AT_high_pc = 0x12 |
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264 }; |
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265 |
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266 enum { |
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267 DW_FORM_addr = 0x01, |
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268 DW_FORM_data4 = 0x06, |
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269 DW_FORM_string = 0x08 |
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270 }; |
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271 |
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272 enum { |
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273 DW_LNS_extended_op = 0, |
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274 DW_LNS_copy = 1, |
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275 DW_LNS_advance_pc = 2, |
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276 DW_LNS_advance_line = 3 |
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277 }; |
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278 |
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279 enum { |
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280 DW_LNE_end_sequence = 1, |
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281 DW_LNE_set_address = 2 |
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282 }; |
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283 |
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284 enum { |
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285 #if LJ_TARGET_X86 |
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286 DW_REG_AX, DW_REG_CX, DW_REG_DX, DW_REG_BX, |
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287 DW_REG_SP, DW_REG_BP, DW_REG_SI, DW_REG_DI, |
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288 DW_REG_RA, |
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289 #elif LJ_TARGET_X64 |
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290 /* Yes, the order is strange, but correct. */ |
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291 DW_REG_AX, DW_REG_DX, DW_REG_CX, DW_REG_BX, |
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292 DW_REG_SI, DW_REG_DI, DW_REG_BP, DW_REG_SP, |
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293 DW_REG_8, DW_REG_9, DW_REG_10, DW_REG_11, |
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294 DW_REG_12, DW_REG_13, DW_REG_14, DW_REG_15, |
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295 DW_REG_RA, |
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296 #elif LJ_TARGET_ARM |
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297 DW_REG_SP = 13, |
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298 DW_REG_RA = 14, |
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299 #elif LJ_TARGET_ARM64 |
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300 DW_REG_SP = 31, |
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301 DW_REG_RA = 30, |
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302 #elif LJ_TARGET_PPC |
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303 DW_REG_SP = 1, |
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304 DW_REG_RA = 65, |
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305 DW_REG_CR = 70, |
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306 #elif LJ_TARGET_MIPS |
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307 DW_REG_SP = 29, |
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308 DW_REG_RA = 31, |
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309 #else |
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310 #error "Unsupported target architecture" |
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311 #endif |
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312 }; |
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313 |
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314 /* Minimal list of sections for the in-memory ELF object. */ |
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315 enum { |
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316 GDBJIT_SECT_NULL, |
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317 GDBJIT_SECT_text, |
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318 GDBJIT_SECT_eh_frame, |
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319 GDBJIT_SECT_shstrtab, |
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320 GDBJIT_SECT_strtab, |
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321 GDBJIT_SECT_symtab, |
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322 GDBJIT_SECT_debug_info, |
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323 GDBJIT_SECT_debug_abbrev, |
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324 GDBJIT_SECT_debug_line, |
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325 GDBJIT_SECT__MAX |
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326 }; |
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327 |
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328 enum { |
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329 GDBJIT_SYM_UNDEF, |
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330 GDBJIT_SYM_FILE, |
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331 GDBJIT_SYM_FUNC, |
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332 GDBJIT_SYM__MAX |
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333 }; |
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334 |
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335 /* In-memory ELF object. */ |
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336 typedef struct GDBJITobj { |
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337 ELFheader hdr; /* ELF header. */ |
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338 ELFsectheader sect[GDBJIT_SECT__MAX]; /* ELF sections. */ |
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339 ELFsymbol sym[GDBJIT_SYM__MAX]; /* ELF symbol table. */ |
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340 uint8_t space[4096]; /* Space for various section data. */ |
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341 } GDBJITobj; |
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342 |
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343 /* Combined structure for GDB JIT entry and ELF object. */ |
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344 typedef struct GDBJITentryobj { |
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345 GDBJITentry entry; |
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346 size_t sz; |
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347 GDBJITobj obj; |
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348 } GDBJITentryobj; |
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349 |
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350 /* Template for in-memory ELF header. */ |
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351 static const ELFheader elfhdr_template = { |
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352 .emagic = { 0x7f, 'E', 'L', 'F' }, |
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353 .eclass = LJ_64 ? 2 : 1, |
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354 .eendian = LJ_ENDIAN_SELECT(1, 2), |
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355 .eversion = 1, |
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356 #if LJ_TARGET_LINUX |
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357 .eosabi = 0, /* Nope, it's not 3. */ |
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358 #elif defined(__FreeBSD__) |
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359 .eosabi = 9, |
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360 #elif defined(__NetBSD__) |
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361 .eosabi = 2, |
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362 #elif defined(__OpenBSD__) |
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363 .eosabi = 12, |
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364 #elif defined(__DragonFly__) |
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365 .eosabi = 0, |
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366 #elif LJ_TARGET_SOLARIS |
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367 .eosabi = 6, |
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368 #else |
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369 .eosabi = 0, |
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370 #endif |
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371 .eabiversion = 0, |
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372 .epad = { 0, 0, 0, 0, 0, 0, 0 }, |
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373 .type = 1, |
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374 #if LJ_TARGET_X86 |
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375 .machine = 3, |
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376 #elif LJ_TARGET_X64 |
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377 .machine = 62, |
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378 #elif LJ_TARGET_ARM |
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379 .machine = 40, |
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380 #elif LJ_TARGET_ARM64 |
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381 .machine = 183, |
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382 #elif LJ_TARGET_PPC |
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383 .machine = 20, |
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384 #elif LJ_TARGET_MIPS |
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385 .machine = 8, |
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386 #else |
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387 #error "Unsupported target architecture" |
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388 #endif |
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389 .version = 1, |
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390 .entry = 0, |
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391 .phofs = 0, |
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392 .shofs = offsetof(GDBJITobj, sect), |
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393 .flags = 0, |
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394 .ehsize = sizeof(ELFheader), |
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395 .phentsize = 0, |
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396 .phnum = 0, |
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397 .shentsize = sizeof(ELFsectheader), |
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398 .shnum = GDBJIT_SECT__MAX, |
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399 .shstridx = GDBJIT_SECT_shstrtab |
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400 }; |
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401 |
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402 /* -- In-memory ELF object generation ------------------------------------- */ |
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403 |
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404 /* Context for generating the ELF object for the GDB JIT API. */ |
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405 typedef struct GDBJITctx { |
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406 uint8_t *p; /* Pointer to next address in obj.space. */ |
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407 uint8_t *startp; /* Pointer to start address in obj.space. */ |
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408 GCtrace *T; /* Generate symbols for this trace. */ |
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409 uintptr_t mcaddr; /* Machine code address. */ |
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410 MSize szmcode; /* Size of machine code. */ |
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411 MSize spadjp; /* Stack adjustment for parent trace or interpreter. */ |
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412 MSize spadj; /* Stack adjustment for trace itself. */ |
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413 BCLine lineno; /* Starting line number. */ |
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414 const char *filename; /* Starting file name. */ |
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415 size_t objsize; /* Final size of ELF object. */ |
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416 GDBJITobj obj; /* In-memory ELF object. */ |
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417 } GDBJITctx; |
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418 |
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419 /* Add a zero-terminated string. */ |
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420 static uint32_t gdbjit_strz(GDBJITctx *ctx, const char *str) |
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421 { |
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422 uint8_t *p = ctx->p; |
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423 uint32_t ofs = (uint32_t)(p - ctx->startp); |
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424 do { |
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425 *p++ = (uint8_t)*str; |
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426 } while (*str++); |
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427 ctx->p = p; |
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428 return ofs; |
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429 } |
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430 |
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431 /* Append a decimal number. */ |
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432 static void gdbjit_catnum(GDBJITctx *ctx, uint32_t n) |
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433 { |
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434 if (n >= 10) { uint32_t m = n / 10; n = n % 10; gdbjit_catnum(ctx, m); } |
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435 *ctx->p++ = '0' + n; |
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436 } |
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437 |
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438 /* Add a SLEB128 value. */ |
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439 static void gdbjit_sleb128(GDBJITctx *ctx, int32_t v) |
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440 { |
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441 uint8_t *p = ctx->p; |
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442 for (; (uint32_t)(v+0x40) >= 0x80; v >>= 7) |
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443 *p++ = (uint8_t)((v & 0x7f) | 0x80); |
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444 *p++ = (uint8_t)(v & 0x7f); |
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445 ctx->p = p; |
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446 } |
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447 |
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448 /* Shortcuts to generate DWARF structures. */ |
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449 #define DB(x) (*p++ = (x)) |
|
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450 #define DI8(x) (*(int8_t *)p = (x), p++) |
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451 #define DU16(x) (*(uint16_t *)p = (x), p += 2) |
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452 #define DU32(x) (*(uint32_t *)p = (x), p += 4) |
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453 #define DADDR(x) (*(uintptr_t *)p = (x), p += sizeof(uintptr_t)) |
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454 #define DUV(x) (p = (uint8_t *)lj_strfmt_wuleb128((char *)p, (x))) |
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455 #define DSV(x) (ctx->p = p, gdbjit_sleb128(ctx, (x)), p = ctx->p) |
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456 #define DSTR(str) (ctx->p = p, gdbjit_strz(ctx, (str)), p = ctx->p) |
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457 #define DALIGNNOP(s) while ((uintptr_t)p & ((s)-1)) *p++ = DW_CFA_nop |
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458 #define DSECT(name, stmt) \ |
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parents:
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459 { uint32_t *szp_##name = (uint32_t *)p; p += 4; stmt \ |
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parents:
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460 *szp_##name = (uint32_t)((p-(uint8_t *)szp_##name)-4); } \ |
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parents:
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461 |
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parents:
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|
462 /* Initialize ELF section headers. */ |
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463 static void LJ_FASTCALL gdbjit_secthdr(GDBJITctx *ctx) |
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464 { |
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465 ELFsectheader *sect; |
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parents:
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466 |
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parents:
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467 *ctx->p++ = '\0'; /* Empty string at start of string table. */ |
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parents:
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468 |
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parents:
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469 #define SECTDEF(id, tp, al) \ |
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470 sect = &ctx->obj.sect[GDBJIT_SECT_##id]; \ |
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471 sect->name = gdbjit_strz(ctx, "." #id); \ |
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472 sect->type = ELFSECT_TYPE_##tp; \ |
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473 sect->align = (al) |
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474 |
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parents:
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475 SECTDEF(text, NOBITS, 16); |
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476 sect->flags = ELFSECT_FLAGS_ALLOC|ELFSECT_FLAGS_EXEC; |
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477 sect->addr = ctx->mcaddr; |
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478 sect->ofs = 0; |
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479 sect->size = ctx->szmcode; |
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480 |
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parents:
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481 SECTDEF(eh_frame, PROGBITS, sizeof(uintptr_t)); |
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482 sect->flags = ELFSECT_FLAGS_ALLOC; |
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483 |
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parents:
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484 SECTDEF(shstrtab, STRTAB, 1); |
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485 SECTDEF(strtab, STRTAB, 1); |
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486 |
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487 SECTDEF(symtab, SYMTAB, sizeof(uintptr_t)); |
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488 sect->ofs = offsetof(GDBJITobj, sym); |
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489 sect->size = sizeof(ctx->obj.sym); |
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490 sect->link = GDBJIT_SECT_strtab; |
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491 sect->entsize = sizeof(ELFsymbol); |
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492 sect->info = GDBJIT_SYM_FUNC; |
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493 |
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494 SECTDEF(debug_info, PROGBITS, 1); |
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495 SECTDEF(debug_abbrev, PROGBITS, 1); |
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496 SECTDEF(debug_line, PROGBITS, 1); |
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497 |
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498 #undef SECTDEF |
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499 } |
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500 |
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501 /* Initialize symbol table. */ |
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502 static void LJ_FASTCALL gdbjit_symtab(GDBJITctx *ctx) |
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503 { |
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504 ELFsymbol *sym; |
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505 |
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506 *ctx->p++ = '\0'; /* Empty string at start of string table. */ |
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507 |
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508 sym = &ctx->obj.sym[GDBJIT_SYM_FILE]; |
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509 sym->name = gdbjit_strz(ctx, "JIT mcode"); |
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510 sym->sectidx = ELFSECT_IDX_ABS; |
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511 sym->info = ELFSYM_TYPE_FILE|ELFSYM_BIND_LOCAL; |
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parents:
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|
512 |
|
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|
513 sym = &ctx->obj.sym[GDBJIT_SYM_FUNC]; |
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514 sym->name = gdbjit_strz(ctx, "TRACE_"); ctx->p--; |
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515 gdbjit_catnum(ctx, ctx->T->traceno); *ctx->p++ = '\0'; |
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516 sym->sectidx = GDBJIT_SECT_text; |
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517 sym->value = 0; |
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518 sym->size = ctx->szmcode; |
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519 sym->info = ELFSYM_TYPE_FUNC|ELFSYM_BIND_GLOBAL; |
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parents:
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520 } |
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parents:
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521 |
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parents:
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|
522 /* Initialize .eh_frame section. */ |
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523 static void LJ_FASTCALL gdbjit_ehframe(GDBJITctx *ctx) |
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524 { |
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525 uint8_t *p = ctx->p; |
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|
526 uint8_t *framep = p; |
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parents:
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|
527 |
|
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parents:
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|
528 /* Emit DWARF EH CIE. */ |
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529 DSECT(CIE, |
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530 DU32(0); /* Offset to CIE itself. */ |
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|
531 DB(DW_CIE_VERSION); |
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532 DSTR("zR"); /* Augmentation. */ |
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533 DUV(1); /* Code alignment factor. */ |
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parents:
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|
534 DSV(-(int32_t)sizeof(uintptr_t)); /* Data alignment factor. */ |
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parents:
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|
535 DB(DW_REG_RA); /* Return address register. */ |
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parents:
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536 DB(1); DB(DW_EH_PE_textrel|DW_EH_PE_udata4); /* Augmentation data. */ |
|
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parents:
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|
537 DB(DW_CFA_def_cfa); DUV(DW_REG_SP); DUV(sizeof(uintptr_t)); |
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parents:
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|
538 #if LJ_TARGET_PPC |
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539 DB(DW_CFA_offset_extended_sf); DB(DW_REG_RA); DSV(-1); |
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parents:
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540 #else |
|
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parents:
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|
541 DB(DW_CFA_offset|DW_REG_RA); DUV(1); |
|
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parents:
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|
542 #endif |
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|
543 DALIGNNOP(sizeof(uintptr_t)); |
|
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parents:
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544 ) |
|
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parents:
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|
545 |
|
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parents:
diff
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|
546 /* Emit DWARF EH FDE. */ |
|
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547 DSECT(FDE, |
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parents:
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|
548 DU32((uint32_t)(p-framep)); /* Offset to CIE. */ |
|
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parents:
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|
549 DU32(0); /* Machine code offset relative to .text. */ |
|
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parents:
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|
550 DU32(ctx->szmcode); /* Machine code length. */ |
|
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parents:
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|
551 DB(0); /* Augmentation data. */ |
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parents:
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552 /* Registers saved in CFRAME. */ |
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parents:
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553 #if LJ_TARGET_X86 |
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parents:
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554 DB(DW_CFA_offset|DW_REG_BP); DUV(2); |
|
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parents:
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|
555 DB(DW_CFA_offset|DW_REG_DI); DUV(3); |
|
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parents:
diff
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|
556 DB(DW_CFA_offset|DW_REG_SI); DUV(4); |
|
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parents:
diff
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557 DB(DW_CFA_offset|DW_REG_BX); DUV(5); |
|
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parents:
diff
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|
558 #elif LJ_TARGET_X64 |
|
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parents:
diff
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559 DB(DW_CFA_offset|DW_REG_BP); DUV(2); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
560 DB(DW_CFA_offset|DW_REG_BX); DUV(3); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
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561 DB(DW_CFA_offset|DW_REG_15); DUV(4); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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562 DB(DW_CFA_offset|DW_REG_14); DUV(5); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
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|
563 /* Extra registers saved for JIT-compiled code. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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564 DB(DW_CFA_offset|DW_REG_13); DUV(LJ_GC64 ? 10 : 9); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
565 DB(DW_CFA_offset|DW_REG_12); DUV(LJ_GC64 ? 11 : 10); |
|
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parents:
diff
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|
566 #elif LJ_TARGET_ARM |
|
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[ThirdParty] Added WRK and luajit for load testing.
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parents:
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|
567 { |
|
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parents:
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|
568 int i; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
569 for (i = 11; i >= 4; i--) { DB(DW_CFA_offset|i); DUV(2+(11-i)); } |
|
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[ThirdParty] Added WRK and luajit for load testing.
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parents:
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570 } |
|
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parents:
diff
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|
571 #elif LJ_TARGET_ARM64 |
|
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[ThirdParty] Added WRK and luajit for load testing.
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parents:
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572 { |
|
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parents:
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573 int i; |
|
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parents:
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574 DB(DW_CFA_offset|31); DUV(2); |
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parents:
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575 for (i = 28; i >= 19; i--) { DB(DW_CFA_offset|i); DUV(3+(28-i)); } |
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parents:
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576 for (i = 15; i >= 8; i--) { DB(DW_CFA_offset|32|i); DUV(28-i); } |
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parents:
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577 } |
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parents:
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578 #elif LJ_TARGET_PPC |
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MrJuneJune <me@mrjunejune.com>
parents:
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579 { |
|
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parents:
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580 int i; |
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parents:
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581 DB(DW_CFA_offset_extended); DB(DW_REG_CR); DUV(55); |
|
94705b5986b3
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parents:
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|
582 for (i = 14; i <= 31; i++) { |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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|
583 DB(DW_CFA_offset|i); DUV(37+(31-i)); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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584 DB(DW_CFA_offset|32|i); DUV(2+2*(31-i)); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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585 } |
|
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parents:
diff
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586 } |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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587 #elif LJ_TARGET_MIPS |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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588 { |
|
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parents:
diff
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589 int i; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
590 DB(DW_CFA_offset|30); DUV(2); |
|
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parents:
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591 for (i = 23; i >= 16; i--) { DB(DW_CFA_offset|i); DUV(26-i); } |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
592 for (i = 30; i >= 20; i -= 2) { DB(DW_CFA_offset|32|i); DUV(42-i); } |
|
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parents:
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593 } |
|
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parents:
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594 #else |
|
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parents:
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595 #error "Unsupported target architecture" |
|
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parents:
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|
596 #endif |
|
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parents:
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|
597 if (ctx->spadjp != ctx->spadj) { /* Parent/interpreter stack frame size. */ |
|
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parents:
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598 DB(DW_CFA_def_cfa_offset); DUV(ctx->spadjp); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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599 DB(DW_CFA_advance_loc|1); /* Only an approximation. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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600 } |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
601 DB(DW_CFA_def_cfa_offset); DUV(ctx->spadj); /* Trace stack frame size. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
602 DALIGNNOP(sizeof(uintptr_t)); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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|
603 ) |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
604 |
|
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parents:
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|
605 ctx->p = p; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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606 } |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
607 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
608 /* Initialize .debug_info section. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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609 static void LJ_FASTCALL gdbjit_debuginfo(GDBJITctx *ctx) |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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610 { |
|
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parents:
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|
611 uint8_t *p = ctx->p; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
612 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
613 DSECT(info, |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
614 DU16(2); /* DWARF version. */ |
|
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parents:
diff
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|
615 DU32(0); /* Abbrev offset. */ |
|
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parents:
diff
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|
616 DB(sizeof(uintptr_t)); /* Pointer size. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
617 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
618 DUV(1); /* Abbrev #1: DW_TAG_compile_unit. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
619 DSTR(ctx->filename); /* DW_AT_name. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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|
620 DADDR(ctx->mcaddr); /* DW_AT_low_pc. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
621 DADDR(ctx->mcaddr + ctx->szmcode); /* DW_AT_high_pc. */ |
|
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parents:
diff
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|
622 DU32(0); /* DW_AT_stmt_list. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
623 ) |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
624 |
|
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parents:
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|
625 ctx->p = p; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
626 } |
|
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parents:
diff
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|
627 |
|
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parents:
diff
changeset
|
628 /* Initialize .debug_abbrev section. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
629 static void LJ_FASTCALL gdbjit_debugabbrev(GDBJITctx *ctx) |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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630 { |
|
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parents:
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|
631 uint8_t *p = ctx->p; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
632 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
633 /* Abbrev #1: DW_TAG_compile_unit. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
634 DUV(1); DUV(DW_TAG_compile_unit); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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|
635 DB(DW_children_no); |
|
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parents:
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|
636 DUV(DW_AT_name); DUV(DW_FORM_string); |
|
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parents:
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|
637 DUV(DW_AT_low_pc); DUV(DW_FORM_addr); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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638 DUV(DW_AT_high_pc); DUV(DW_FORM_addr); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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|
639 DUV(DW_AT_stmt_list); DUV(DW_FORM_data4); |
|
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parents:
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|
640 DB(0); DB(0); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
641 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
642 ctx->p = p; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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643 } |
|
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parents:
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|
644 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
645 #define DLNE(op, s) (DB(DW_LNS_extended_op), DUV(1+(s)), DB((op))) |
|
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parents:
diff
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646 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
647 /* Initialize .debug_line section. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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648 static void LJ_FASTCALL gdbjit_debugline(GDBJITctx *ctx) |
|
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parents:
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649 { |
|
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parents:
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650 uint8_t *p = ctx->p; |
|
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parents:
diff
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|
651 |
|
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parents:
diff
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|
652 DSECT(line, |
|
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parents:
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|
653 DU16(2); /* DWARF version. */ |
|
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parents:
diff
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|
654 DSECT(header, |
|
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parents:
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|
655 DB(1); /* Minimum instruction length. */ |
|
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parents:
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|
656 DB(1); /* is_stmt. */ |
|
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parents:
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|
657 DI8(0); /* Line base for special opcodes. */ |
|
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parents:
diff
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|
658 DB(2); /* Line range for special opcodes. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
659 DB(3+1); /* Opcode base at DW_LNS_advance_line+1. */ |
|
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parents:
diff
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|
660 DB(0); DB(1); DB(1); /* Standard opcode lengths. */ |
|
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parents:
diff
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|
661 /* Directory table. */ |
|
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parents:
diff
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|
662 DB(0); |
|
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parents:
diff
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|
663 /* File name table. */ |
|
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parents:
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|
664 DSTR(ctx->filename); DUV(0); DUV(0); DUV(0); |
|
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parents:
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|
665 DB(0); |
|
94705b5986b3
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parents:
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|
666 ) |
|
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parents:
diff
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|
667 |
|
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parents:
diff
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|
668 DLNE(DW_LNE_set_address, sizeof(uintptr_t)); DADDR(ctx->mcaddr); |
|
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parents:
diff
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|
669 if (ctx->lineno) { |
|
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parents:
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|
670 DB(DW_LNS_advance_line); DSV(ctx->lineno-1); |
|
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parents:
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|
671 } |
|
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parents:
diff
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|
672 DB(DW_LNS_copy); |
|
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parents:
diff
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|
673 DB(DW_LNS_advance_pc); DUV(ctx->szmcode); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
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|
674 DLNE(DW_LNE_end_sequence, 0); |
|
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parents:
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|
675 ) |
|
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parents:
diff
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|
676 |
|
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parents:
diff
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|
677 ctx->p = p; |
|
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parents:
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|
678 } |
|
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parents:
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|
679 |
|
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parents:
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changeset
|
680 #undef DLNE |
|
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parents:
diff
changeset
|
681 |
|
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parents:
diff
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|
682 /* Undef shortcuts. */ |
|
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parents:
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|
683 #undef DB |
|
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parents:
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|
684 #undef DI8 |
|
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parents:
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|
685 #undef DU16 |
|
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parents:
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|
686 #undef DU32 |
|
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parents:
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|
687 #undef DADDR |
|
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parents:
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|
688 #undef DUV |
|
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parents:
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|
689 #undef DSV |
|
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parents:
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|
690 #undef DSTR |
|
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parents:
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|
691 #undef DALIGNNOP |
|
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parents:
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|
692 #undef DSECT |
|
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parents:
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|
693 |
|
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parents:
diff
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|
694 /* Type of a section initializer callback. */ |
|
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parents:
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|
695 typedef void (LJ_FASTCALL *GDBJITinitf)(GDBJITctx *ctx); |
|
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parents:
diff
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|
696 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
697 /* Call section initializer and set the section offset and size. */ |
|
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parents:
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|
698 static void gdbjit_initsect(GDBJITctx *ctx, int sect, GDBJITinitf initf) |
|
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parents:
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|
699 { |
|
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parents:
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|
700 ctx->startp = ctx->p; |
|
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parents:
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|
701 ctx->obj.sect[sect].ofs = (uintptr_t)((char *)ctx->p - (char *)&ctx->obj); |
|
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parents:
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|
702 initf(ctx); |
|
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parents:
diff
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|
703 ctx->obj.sect[sect].size = (uintptr_t)(ctx->p - ctx->startp); |
|
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parents:
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|
704 } |
|
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parents:
diff
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|
705 |
|
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parents:
diff
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|
706 #define SECTALIGN(p, a) \ |
|
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[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
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|
707 ((p) = (uint8_t *)(((uintptr_t)(p) + ((a)-1)) & ~(uintptr_t)((a)-1))) |
|
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parents:
diff
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|
708 |
|
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[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
709 /* Build in-memory ELF object. */ |
|
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parents:
diff
changeset
|
710 static void gdbjit_buildobj(GDBJITctx *ctx) |
|
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parents:
diff
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|
711 { |
|
94705b5986b3
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parents:
diff
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|
712 GDBJITobj *obj = &ctx->obj; |
|
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[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
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|
713 /* Fill in ELF header and clear structures. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
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|
714 memcpy(&obj->hdr, &elfhdr_template, sizeof(ELFheader)); |
|
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[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
715 memset(&obj->sect, 0, sizeof(ELFsectheader)*GDBJIT_SECT__MAX); |
|
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parents:
diff
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|
716 memset(&obj->sym, 0, sizeof(ELFsymbol)*GDBJIT_SYM__MAX); |
|
94705b5986b3
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parents:
diff
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|
717 /* Initialize sections. */ |
|
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[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
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|
718 ctx->p = obj->space; |
|
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[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
changeset
|
719 gdbjit_initsect(ctx, GDBJIT_SECT_shstrtab, gdbjit_secthdr); |
|
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[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
720 gdbjit_initsect(ctx, GDBJIT_SECT_strtab, gdbjit_symtab); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
721 gdbjit_initsect(ctx, GDBJIT_SECT_debug_info, gdbjit_debuginfo); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
changeset
|
722 gdbjit_initsect(ctx, GDBJIT_SECT_debug_abbrev, gdbjit_debugabbrev); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
723 gdbjit_initsect(ctx, GDBJIT_SECT_debug_line, gdbjit_debugline); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
724 SECTALIGN(ctx->p, sizeof(uintptr_t)); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
725 gdbjit_initsect(ctx, GDBJIT_SECT_eh_frame, gdbjit_ehframe); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
726 ctx->objsize = (size_t)((char *)ctx->p - (char *)obj); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
727 lj_assertX(ctx->objsize < sizeof(GDBJITobj), "GDBJITobj overflow"); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
728 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
729 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
730 #undef SECTALIGN |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
731 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
732 /* -- Interface to GDB JIT API -------------------------------------------- */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
733 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
734 static int gdbjit_lock; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
735 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
736 static void gdbjit_lock_acquire() |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
737 { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
738 while (__sync_lock_test_and_set(&gdbjit_lock, 1)) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
739 /* Just spin; futexes or pthreads aren't worth the portability cost. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
740 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
741 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
742 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
743 static void gdbjit_lock_release() |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
744 { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
745 __sync_lock_release(&gdbjit_lock); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
746 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
747 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
748 /* Add new entry to GDB JIT symbol chain. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
749 static void gdbjit_newentry(lua_State *L, GDBJITctx *ctx) |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
750 { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
751 /* Allocate memory for GDB JIT entry and ELF object. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
752 MSize sz = (MSize)(sizeof(GDBJITentryobj) - sizeof(GDBJITobj) + ctx->objsize); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
753 GDBJITentryobj *eo = lj_mem_newt(L, sz, GDBJITentryobj); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
754 memcpy(&eo->obj, &ctx->obj, ctx->objsize); /* Copy ELF object. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
755 eo->sz = sz; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
756 ctx->T->gdbjit_entry = (void *)eo; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
757 /* Link new entry to chain and register it. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
758 eo->entry.prev_entry = NULL; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
759 gdbjit_lock_acquire(); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
changeset
|
760 eo->entry.next_entry = __jit_debug_descriptor.first_entry; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
761 if (eo->entry.next_entry) |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
762 eo->entry.next_entry->prev_entry = &eo->entry; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
763 eo->entry.symfile_addr = (const char *)&eo->obj; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
764 eo->entry.symfile_size = ctx->objsize; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
765 __jit_debug_descriptor.first_entry = &eo->entry; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
766 __jit_debug_descriptor.relevant_entry = &eo->entry; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
767 __jit_debug_descriptor.action_flag = GDBJIT_REGISTER; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
768 __jit_debug_register_code(); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
769 gdbjit_lock_release(); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
770 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
771 |
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772 /* Add debug info for newly compiled trace and notify GDB. */ |
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773 void lj_gdbjit_addtrace(jit_State *J, GCtrace *T) |
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774 { |
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775 GDBJITctx ctx; |
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776 GCproto *pt = &gcref(T->startpt)->pt; |
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777 TraceNo parent = T->ir[REF_BASE].op1; |
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778 const BCIns *startpc = mref(T->startpc, const BCIns); |
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779 ctx.T = T; |
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780 ctx.mcaddr = (uintptr_t)T->mcode; |
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781 ctx.szmcode = T->szmcode; |
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782 ctx.spadjp = CFRAME_SIZE_JIT + |
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783 (MSize)(parent ? traceref(J, parent)->spadjust : 0); |
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784 ctx.spadj = CFRAME_SIZE_JIT + T->spadjust; |
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785 lj_assertJ(startpc >= proto_bc(pt) && startpc < proto_bc(pt) + pt->sizebc, |
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786 "start PC out of range"); |
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787 ctx.lineno = lj_debug_line(pt, proto_bcpos(pt, startpc)); |
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788 ctx.filename = proto_chunknamestr(pt); |
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789 if (*ctx.filename == '@' || *ctx.filename == '=') |
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790 ctx.filename++; |
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791 else |
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792 ctx.filename = "(string)"; |
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793 gdbjit_buildobj(&ctx); |
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794 gdbjit_newentry(J->L, &ctx); |
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795 } |
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796 |
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797 /* Delete debug info for trace and notify GDB. */ |
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798 void lj_gdbjit_deltrace(jit_State *J, GCtrace *T) |
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799 { |
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800 GDBJITentryobj *eo = (GDBJITentryobj *)T->gdbjit_entry; |
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801 if (eo) { |
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802 gdbjit_lock_acquire(); |
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803 if (eo->entry.prev_entry) |
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804 eo->entry.prev_entry->next_entry = eo->entry.next_entry; |
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805 else |
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806 __jit_debug_descriptor.first_entry = eo->entry.next_entry; |
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807 if (eo->entry.next_entry) |
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808 eo->entry.next_entry->prev_entry = eo->entry.prev_entry; |
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809 __jit_debug_descriptor.relevant_entry = &eo->entry; |
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810 __jit_debug_descriptor.action_flag = GDBJIT_UNREGISTER; |
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811 __jit_debug_register_code(); |
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812 gdbjit_lock_release(); |
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813 lj_mem_free(J2G(J), eo, eo->sz); |
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814 } |
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815 } |
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816 |
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817 #endif |
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818 #endif |