Mercurial
annotate third_party/luajit/src/lj_gdbjit.c @ 198:008ca7780c8a
S3 upload got it to work.
| author | MrJuneJune <me@mrjunejune.com> |
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| date | Sat, 14 Feb 2026 16:18:14 -0800 |
| 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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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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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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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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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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520 } |
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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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527 |
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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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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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540 #else |
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541 DB(DW_CFA_offset|DW_REG_RA); DUV(1); |
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542 #endif |
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543 DALIGNNOP(sizeof(uintptr_t)); |
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544 ) |
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|
545 |
|
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parents:
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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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552 /* Registers saved in CFRAME. */ |
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553 #if LJ_TARGET_X86 |
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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:
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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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[ThirdParty] Added WRK and luajit for load testing.
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); |
|
94705b5986b3
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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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[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
565 DB(DW_CFA_offset|DW_REG_12); DUV(LJ_GC64 ? 11 : 10); |
|
94705b5986b3
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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:
diff
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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:
diff
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570 } |
|
94705b5986b3
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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.
MrJuneJune <me@mrjunejune.com>
parents:
diff
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572 { |
|
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parents:
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|
573 int i; |
|
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[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
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|
574 DB(DW_CFA_offset|31); DUV(2); |
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MrJuneJune <me@mrjunejune.com>
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 } |
|
94705b5986b3
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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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MrJuneJune <me@mrjunejune.com>
parents:
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581 DB(DW_CFA_offset_extended); DB(DW_REG_CR); DUV(55); |
|
94705b5986b3
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
582 for (i = 14; i <= 31; i++) { |
|
94705b5986b3
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
583 DB(DW_CFA_offset|i); DUV(37+(31-i)); |
|
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parents:
diff
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584 DB(DW_CFA_offset|32|i); DUV(2+2*(31-i)); |
|
94705b5986b3
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MrJuneJune <me@mrjunejune.com>
parents:
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585 } |
|
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MrJuneJune <me@mrjunejune.com>
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:
diff
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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:
diff
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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:
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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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MrJuneJune <me@mrjunejune.com>
parents:
diff
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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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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
597 if (ctx->spadjp != ctx->spadj) { /* Parent/interpreter stack frame size. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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598 DB(DW_CFA_def_cfa_offset); DUV(ctx->spadjp); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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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
changeset
|
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:
diff
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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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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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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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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
625 ctx->p = p; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
626 } |
|
94705b5986b3
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parents:
diff
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|
627 |
|
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MrJuneJune <me@mrjunejune.com>
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 { |
|
94705b5986b3
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parents:
diff
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|
631 uint8_t *p = ctx->p; |
|
94705b5986b3
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
632 |
|
94705b5986b3
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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:
diff
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|
635 DB(DW_children_no); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
636 DUV(DW_AT_name); DUV(DW_FORM_string); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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|
637 DUV(DW_AT_low_pc); DUV(DW_FORM_addr); |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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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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MrJuneJune <me@mrjunejune.com>
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
changeset
|
642 ctx->p = p; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
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643 } |
|
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parents:
diff
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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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MrJuneJune <me@mrjunejune.com>
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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MrJuneJune <me@mrjunejune.com>
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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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
651 |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
652 DSECT(line, |
|
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parents:
diff
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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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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
656 DB(1); /* is_stmt. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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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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MrJuneJune <me@mrjunejune.com>
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
changeset
|
663 /* File name table. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
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|
664 DSTR(ctx->filename); DUV(0); DUV(0); DUV(0); |
|
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|
665 DB(0); |
|
94705b5986b3
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parents:
diff
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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:
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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); |
|
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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:
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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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|
680 #undef DLNE |
|
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parents:
diff
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|
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:
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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:
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|
696 |
|
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parents:
diff
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|
697 /* Call section initializer and set the section offset and size. */ |
|
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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:
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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:
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|
713 /* Fill in ELF header and clear structures. */ |
|
94705b5986b3
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parents:
diff
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|
714 memcpy(&obj->hdr, &elfhdr_template, sizeof(ELFheader)); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
changeset
|
715 memset(&obj->sect, 0, sizeof(ELFsectheader)*GDBJIT_SECT__MAX); |
|
94705b5986b3
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parents:
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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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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.
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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 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
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 |