ranger.py - ranger - mirror of ranger - a simple, vim-like file manager

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generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-12-23 14:22:44 +0000

ss="p">.Identifier { color: #af5f00; } .Normal { color: #000000; background-color: #c6c6c6; padding-bottom: 1px; } .Comment { color: #005faf; } .SalientComment { color: #0000af; } --> </style> <script type='text/javascript'>  </script> </head> <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/master/subx/018jump_disp32.cc'>https://github.com/akkartik/mu/blob/master/subx/018jump_disp32.cc</a> <pre id='vimCodeElement'> 1 //: jump to 32-bit offset 2 3 //:: jump 4 5 :(before "End Initialize Op Names") 6 <a href='001help.cc.html#L262'>put_new</a>(<a href='010---vm.cc.html#L378'>Name</a>, "e9", "jump disp32 bytes away (jmp)"); 7 8 :(scenario jump_disp32) 9 == 0x1 10 # op ModR/M SIB displacement immediate 11 e9 05 00 00 00 # skip 1 instruction 12 05 00 00 00 01 13 05 00 00 00 02 14 +run: inst: 0x00000001 15 +run: jump 5 16 +run: inst: 0x0000000b 17 -run: inst: 0x00000006 18 19 :(before "End Single-Byte Opcodes") 20 case 0xe9: { // jump disp32 21 const int32_t offset = <a href='011run.cc.html#L343'>next32</a>(); 22 <a href='003trace.cc.html#L183'>trace</a>(90, "run") << "jump " << offset << end(); 23 <a href='010---vm.cc.html#L29'>EIP</a> += offset; 24 break; 25 } 26 27 //:: jump if equal/zero 28 29 :(before "End Initialize Op Names") 30 <a href='001help.cc.html#L262'>put_new</a>(<a href='010---vm.cc.html#L379'>Name_0f</a>, "84", "jump disp32 bytes away if equal, if ZF is set (jcc/jz/je)"); 31 32 :(scenario je_disp32_success) 33 % ZF = true; 34 == 0x1 35 # op ModR/M SIB displacement immediate 36 0f 84 05 00 00 00 # skip 1 instruction 37 05 00 00 00 01 38 05 00 00 00 02 39 +run: inst: 0x00000001 40 +run: jump 5 41 +run: inst: 0x0000000c 42 -run: inst: 0x00000007 43 44 :(before "End Two-Byte Opcodes Starting With 0f") 45 case 0x84: { // jump disp32 if ZF 46 const int32_t offset = <a href='011run.cc.html#L343'>next32</a>(); 47 if (ZF) { 48 <a href='003trace.cc.html#L183'>trace</a>(90, "run") << "jump " << <a href='010---vm.cc.html#L415'>NUM</a>(offset) << end(); 49 <a href='010---vm.cc.html#L29'>EIP</a> += offset; 50 } 51 break; 52 } 53 54 :(scenario je_disp32_fail) 55 % ZF = false; 56 == 0x1 57 # op ModR/M SIB displacement immediate 58 0f 84 05 00 00 00 # skip 1 instruction 59 05 00 00 00 01 60 05 00 00 00 02 61 +run: inst: 0x00000001 62 +run: inst: 0x00000007 63 +run: inst: 0x0000000c 64 -run: jump 5 65 66 //:: jump if not equal/not zero 67 68 :(before "End Initialize Op Names") 69 <a href='001help.cc.html#L262'>put_new</a>(<a href='010---vm.cc.html#L379'>Name_0f</a>, "85", "jump disp32 bytes away if not equal, if ZF is not set (jcc/jnz/jne)"); 70 71 :(scenario jne_disp32_success) 72 % ZF = false; 73 == 0x1 74 # op ModR/M SIB displacement immediate 75 0f 85 05 00 00 00 # skip 1 instruction 76 05 00 00 00 01 77 05 00 00 00 02 78 +run: inst: 0x00000001 79 +run: jump 5 80 +run: inst: 0x0000000c 81 -run: inst: 0x00000007 82 83 :(before "End Two-Byte Opcodes Starting With 0f") 84 case 0x85: { // jump disp32 unless ZF 85 const int32_t offset = <a href='011run.cc.html#L343'>next32</a>(); 86 if (!ZF) { 87 <a href='003trace.cc.html#L183'>trace</a>(90, "run") << "jump " << <a href='010---vm.cc.html#L415'>NUM</a>(offset) << end(); 88 <a href='010---vm.cc.html#L29'>EIP</a> += offset; 89 } 90 break; 91 } 92 93 :(scenario jne_disp32_fail) 94 % ZF = true; 95 == 0x1 96 # op ModR/M SIB displacement immediate 97 0f 85 05 00 00 00 # skip 1 instruction 98 05 00 00 00 01 99 05 00 00 00 02 100 +run: inst: 0x00000001 101 +run: inst: 0x00000007 102 +run: inst: 0x0000000c 103 -run: jump 5 104 105 //:: jump if greater 106 107 :(before "End Initialize Op Names") 108 <a href='001help.cc.html#L262'>put_new</a>(<a href='010---vm.cc.html#L379'>Name_0f</a>, "8f", "jump disp32 bytes away if greater, if ZF is unset and SF == <a href='010---vm.cc.html#L81'>OF</a> (jcc/jg/jnle)"); 109 110 :(scenario jg_disp32_success) 111 % ZF = false; 112 % SF = false; 113 % <a href='010---vm.cc.html#L81'>OF</a> = false; 114 == 0x1 115 # op ModR/M SIB displacement immediate 116 0f 8f 05 00 00 00 # skip 1 instruction 117 05 00 00 00 01 118 05 00 00 00 02 119 +run: inst: 0x00000001 120 +run: jump 5 121 +run: inst: 0x0000000c 122 -run: inst: 0x00000007 123 124 :(before "End Two-Byte Opcodes Starting With 0f") 125 case 0x8f: { // jump disp32 if !SF and !ZF 126 const int32_t offset = <a href='011run.cc.html#L343'>next32</a>(); 127 if (!ZF && SF == <a href='010---vm.cc.html#L81'>OF</a>) { 128 <a href='003trace.cc.html#L183'>trace</a>(90, "run") << "jump " << <a href='010---vm.cc.html#L415'>NUM</a>(offset) << end(); 129 <a href='010---vm.cc.html#L29'>EIP</a> += offset; 130 } 131 break; 132 } 133 134 :(scenario jg_disp32_fail) 135 % ZF = false; 136 % SF = true; 137 % <a href='010---vm.cc.html#L81'>OF</a> = false; 138 == 0x1 139 # op ModR/M SIB displacement immediate 140 0f 8f 05 00 00 00 # skip 1 instruction 141 05 00 00 00 01 142 05 00 00 00 02 143 +run: inst: 0x00000001 144 +run: inst: 0x00000007 145 +run: inst: 0x0000000c 146 -run: jump 5 147 148 //:: jump if greater or equal 149 150 :(before "End Initialize Op Names") 151 <a href='001help.cc.html#L262'>put_new</a>(<a href='010---vm.cc.html#L379'>Name_0f</a>, "8d", "jump disp32 bytes away if greater or equal, if SF == <a href='010---vm.cc.html#L81'>OF</a> (jcc/jge/jnl)"); 152 153 :(scenario jge_disp32_success) 154 % SF = false; 155 % <a href='010---vm.cc.html#L81'>OF</a> = false; 156 == 0x1 157 # op ModR/M SIB displacement immediate 158 0f 8d 05 00 00 00 # skip 1 instruction 159 05 00 00 00 01 160 05 00 00 00 02 161 +run: inst: 0x00000001 162 +run: jump 5 163 +run: inst: 0x0000000c 164 -run: inst: 0x00000007 165 166 :(before "End Two-Byte Opcodes Starting With 0f") 167 case 0x8d: { // jump disp32 if !SF 168 const int32_t offset = <a href='011run.cc.html#L343'>next32</a>(); 169 if (SF == <a href='010---vm.cc.html#L81'>OF</a>) { 170 <a href='003trace.cc.html#L183'>trace</a>(90, "run") << "jump " << <a href='010---vm.cc.html#L415'>NUM</a>(offset) << end(); 171 <a href='010---vm.cc.html#L29'>EIP</a> += offset; 172 } 173 break; 174 } 175 176 :(scenario jge_disp32_fail) 177 % SF = true; 178 % <a href='010---vm.cc.html#L81'>OF</a> = false; 179 == 0x1 180 # op ModR/M SIB displacement immediate 181 0f 8d 05 00 00 00 # skip 1 instruction 182 05 00 00 00 01 183 05 00 00 00 02 184 +run: inst: 0x00000001 185 +run: inst: 0x00000007 186 +run: inst: 0x0000000c 187 -run: jump 5 188 189 //:: jump if lesser 190 191 :(before "End Initialize Op Names") 192 <a href='001help.cc.html#L262'>put_new</a>(<a href='010---vm.cc.html#L379'>Name_0f</a>, "8c", "jump disp32 bytes away if lesser, if SF != <a href='010---vm.cc.html#L81'>OF</a> (jcc/jl/jnge)"); 193 194 :(scenario jl_disp32_success) 195 % ZF = false; 196 % SF = true; 197 % <a href='010---vm.cc.html#L81'>OF</a> = false; 198 == 0x1 199 # op ModR/M SIB displacement immediate 200 0f 8c 05 00 00 00 # skip 1 instruction 201 05 00 00 00 01 202 05 00 00 00 02 203 +run: inst: 0x00000001 204 +run: jump 5 205 +run: inst: 0x0000000c 206 -run: inst: 0x00000007 207 208 :(before "End Two-Byte Opcodes Starting With 0f") 209 case 0x8c: { // jump disp32 if SF and !ZF 210 const int32_t offset = <a href='011run.cc.html#L343'>next32</a>(); 211 if (SF != <a href='010---vm.cc.html#L81'>OF</a>) { 212 <a href='003trace.cc.html#L183'>trace</a>(90, "run") << "jump " << <a href='010---vm.cc.html#L415'>NUM</a>(offset) << end(); 213 <a href='010---vm.cc.html#L29'>EIP</a> += offset; 214 } 215 break; 216 } 217 218 :(scenario jl_disp32_fail) 219 % ZF = false; 220 % SF = false; 221 % <a href='010---vm.cc.html#L81'>OF</a> = false; 222 == 0x1 223 # op ModR/M SIB displacement immediate 224 0f 8c 05 00 00 00 # skip 1 instruction 225 05 00 00 00 01 226 05 00 00 00 02 227 +run: inst: 0x00000001 228 +run: inst: 0x00000007 229 +run: inst: 0x0000000c 230 -run: jump 5 231 232 //:: jump if lesser or equal 233 234 :(before "End Initialize Op Names") 235 <a href='001help.cc.html#L262'>put_new</a>(<a href='010---vm.cc.html#L379'>Name_0f</a>, "8e", "jump disp32 bytes away if lesser or equal, if ZF is set or SF != <a href='010---vm.cc.html#L81'>OF</a> (jcc/jle/jng)"); 236 237 :(scenario jle_disp32_equal) 238 % ZF = true; 239 % SF = false; 240 % <a href='010---vm.cc.html#L81'>OF</a> = false; 241 == 0x1 242 # op ModR/M SIB displacement immediate 243 0f 8e 05 00 00 00 # skip 1 instruction 244 05 00 00 00 01 245 05 00 00 00 02 246 +run: inst: 0x00000001 247 +run: jump 5 248 +run: inst: 0x0000000c 249 -run: inst: 0x00000007 250 251 :(scenario jle_disp32_lesser) 252 % ZF = false; 253 % SF = true; 254 % <a href='010---vm.cc.html#L81'>OF</a> = false; 255 == 0x1 256 # op ModR/M SIB displacement immediate 257 0f 8e 05 00 00 00 # skip 1 instruction 258 05 00 00 00 01 259 05 00 00 00 02 260 +run: inst: 0x00000001 261 +run: jump 5 262 +run: inst: 0x0000000c 263 -run: inst: 0x00000007 264 265 :(before "End Two-Byte Opcodes Starting With 0f") 266 case 0x8e: { // jump disp32 if SF or ZF 267 const int32_t offset = <a href='011run.cc.html#L343'>next32</a>(); 268 if (ZF || SF != <a href='010---vm.cc.html#L81'>OF</a>) { 269 <a href='003trace.cc.html#L183'>trace</a>(90, "run") << "jump " << <a href='010---vm.cc.html#L415'>NUM</a>(offset) << end(); 270 <a href='010---vm.cc.html#L29'>EIP</a> += offset; 271 } 272 break; 273 } 274 275 :(scenario jle_disp32_greater) 276 % ZF = false; 277 % SF = false; 278 % <a href='010---vm.cc.html#L81'>OF</a> = false; 279 == 0x1 280 # op ModR/M SIB displacement immediate 281 0f 8e 05 00 00 00 # skip 1 instruction 282 05 00 00 00 01 283 05 00 00 00 02 284 +run: inst: 0x00000001 285 +run: inst: 0x00000007 286 +run: inst: 0x0000000c 287 -run: jump 5 </pre> </body> </html>