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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Mu - 018jump_disp32.cc</title> <meta name="Generator" content="Vim/8.1"> <meta name="plugin-version" content="vim8.1_v1"> <meta name="syntax" content="cpp"> <meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> <meta name="colorscheme" content="minimal-light"> <style type="text/css">  </style> <script type='text/javascript'>  </script> </head> <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/master/018jump_disp32.cc'>https://github.com/akkartik/mu/blob/master/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#L260'>put_new</a>(<a href='010---vm.cc.html#L348'>Name</a>, "e9", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away (jmp)"); 7 8 :(code) 9 void <a href='018jump_disp32.cc.html#L9'>test_jump_disp32</a>() { 10 <a href='011run.cc.html#L83'>run</a>( 11 "== code 0x1\n" 12 // op ModR/M SIB displacement immediate 13 " e9 05 00 00 00 \n" // skip 1 instruction 14 " 05 00 00 00 01 \n" 15 " 05 00 00 00 02 \n" 16 ); 17 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 18 "run: 0x00000001 opcode: e9\n" 19 "run: jump 5\n" 20 "run: 0x0000000b opcode: 05\n" 21 ); 22 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: 0x00000006 opcode: 05"); 23 } 24 25 :(before "End Single-Byte Opcodes") 26 case 0xe9: { // jump disp32 27 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 28 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 29 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 30 break; 31 } 32 33 //:: jump if equal/zero 34 35 :(before "End Initialize Op Names") 36 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "84", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if equal, if <a href='010---vm.cc.html#L86'>ZF</a> is set (jcc/jz/je)"); 37 38 :(code) 39 void <a href='018jump_disp32.cc.html#L39'>test_je_disp32_success</a>() { 40 <a href='010---vm.cc.html#L86'>ZF</a> = true; 41 <a href='011run.cc.html#L83'>run</a>( 42 "== code 0x1\n" 43 // op ModR/M SIB displacement immediate 44 " 0f 84 05 00 00 00 \n" // skip 1 instruction 45 " 05 00 00 00 01 \n" 46 " 05 00 00 00 02 \n" 47 ); 48 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 49 "run: 0x00000001 opcode: 0f\n" 50 "run: jump 5\n" 51 "run: 0x0000000c opcode: 05\n" 52 ); 53 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: 0x00000007 opcode: 05"); 54 } 55 56 :(before "End Two-Byte Opcodes Starting With 0f") 57 case 0x84: { // jump disp32 if ZF 58 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 59 if (<a href='010---vm.cc.html#L86'>ZF</a>) { 60 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 61 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 62 } 63 break; 64 } 65 66 :(code) 67 void <a href='018jump_disp32.cc.html#L67'>test_je_disp32_fail</a>() { 68 <a href='010---vm.cc.html#L86'>ZF</a> = false; 69 <a href='011run.cc.html#L83'>run</a>( 70 "== code 0x1\n" 71 // op ModR/M SIB displacement immediate 72 " 0f 84 05 00 00 00 \n" // skip 1 instruction 73 " 05 00 00 00 01 \n" 74 " 05 00 00 00 02 \n" 75 ); 76 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 77 "run: 0x00000001 opcode: 0f\n" 78 "run: 0x00000007 opcode: 05\n" 79 "run: 0x0000000c opcode: 05\n" 80 ); 81 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: jump 5"); 82 } 83 84 //:: jump if not equal/not zero 85 86 :(before "End Initialize Op Names") 87 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "85", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if not equal, if <a href='010---vm.cc.html#L86'>ZF</a> is not set (jcc/jnz/jne)"); 88 89 :(code) 90 void <a href='018jump_disp32.cc.html#L90'>test_jne_disp32_success</a>() { 91 <a href='010---vm.cc.html#L86'>ZF</a> = false; 92 <a href='011run.cc.html#L83'>run</a>( 93 "== code 0x1\n" 94 // op ModR/M SIB displacement immediate 95 " 0f 85 05 00 00 00 \n" // skip 1 instruction 96 " 05 00 00 00 01 \n" 97 " 05 00 00 00 02 \n" 98 ); 99 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 100 "run: 0x00000001 opcode: 0f\n" 101 "run: jump 5\n" 102 "run: 0x0000000c opcode: 05\n" 103 ); 104 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: 0x00000007 opcode: 05"); 105 } 106 107 :(before "End Two-Byte Opcodes Starting With 0f") 108 case 0x85: { // jump disp32 unless ZF 109 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 110 if (!ZF) { 111 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 112 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 113 } 114 break; 115 } 116 117 :(code) 118 void <a href='018jump_disp32.cc.html#L118'>test_jne_disp32_fail</a>() { 119 <a href='010---vm.cc.html#L86'>ZF</a> = true; 120 <a href='011run.cc.html#L83'>run</a>( 121 "== code 0x1\n" 122 // op ModR/M SIB displacement immediate 123 " 0f 85 05 00 00 00 \n" // skip 1 instruction 124 " 05 00 00 00 01 \n" 125 " 05 00 00 00 02 \n" 126 ); 127 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 128 "run: 0x00000001 opcode: 0f\n" 129 "run: 0x00000007 opcode: 05\n" 130 "run: 0x0000000c opcode: 05\n" 131 ); 132 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: jump 5"); 133 } 134 135 //:: jump if greater 136 137 :(before "End Initialize Op Names") 138 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "8f", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if greater (signed), if <a href='010---vm.cc.html#L86'>ZF</a> is unset and SF == <a href='010---vm.cc.html#L88'>OF</a> (jcc/jg/jnle)"); 139 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "87", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if greater (unsigned), if <a href='010---vm.cc.html#L86'>ZF</a> is unset and <a href='010---vm.cc.html#L87'>CF</a> is unset (jcc/ja/jnbe)"); 140 141 :(code) 142 void <a href='018jump_disp32.cc.html#L142'>test_jg_disp32_success</a>() { 143 <a href='010---vm.cc.html#L86'>ZF</a> = false; 144 SF = false; 145 <a href='010---vm.cc.html#L88'>OF</a> = false; 146 <a href='011run.cc.html#L83'>run</a>( 147 "== code 0x1\n" 148 // op ModR/M SIB displacement immediate 149 " 0f 8f 05 00 00 00 \n" // skip 1 instruction 150 " 05 00 00 00 01 \n" 151 " 05 00 00 00 02 \n" 152 ); 153 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 154 "run: 0x00000001 opcode: 0f\n" 155 "run: jump 5\n" 156 "run: 0x0000000c opcode: 05\n" 157 ); 158 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: 0x00000007 opcode: 05"); 159 } 160 161 :(before "End Two-Byte Opcodes Starting With 0f") 162 case 0x8f: { // jump disp32 if !SF and !ZF 163 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 164 if (!ZF && SF == <a href='010---vm.cc.html#L88'>OF</a>) { 165 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 166 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 167 } 168 break; 169 } 170 case 0x87: { // jump disp32 if !CF and !ZF 171 const int32_t offset = <a href='010---vm.cc.html#L331'>next</a>(); 172 if (!CF && !ZF) { 173 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 174 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 175 } 176 break; 177 } 178 179 :(code) 180 void <a href='018jump_disp32.cc.html#L180'>test_jg_disp32_fail</a>() { 181 <a href='010---vm.cc.html#L86'>ZF</a> = false; 182 SF = true; 183 <a href='010---vm.cc.html#L88'>OF</a> = false; 184 <a href='011run.cc.html#L83'>run</a>( 185 "== code 0x1\n" 186 // op ModR/M SIB displacement immediate 187 " 0f 8f 05 00 00 00 \n" // skip 1 instruction 188 " 05 00 00 00 01 \n" 189 " 05 00 00 00 02 \n" 190 ); 191 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 192 "run: 0x00000001 opcode: 0f\n" 193 "run: 0x00000007 opcode: 05\n" 194 "run: 0x0000000c opcode: 05\n" 195 ); 196 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: jump 5"); 197 } 198 199 //:: jump if greater or equal 200 201 :(before "End Initialize Op Names") 202 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "8d", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if greater or equal (signed), if SF == <a href='010---vm.cc.html#L88'>OF</a> (jcc/jge/jnl)"); 203 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "83", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if greater or equal (unsigned), if <a href='010---vm.cc.html#L87'>CF</a> is unset (jcc/jae/jnb)"); 204 205 :(code) 206 void <a href='018jump_disp32.cc.html#L206'>test_jge_disp32_success</a>() { 207 SF = false; 208 <a href='010---vm.cc.html#L88'>OF</a> = false; 209 <a href='011run.cc.html#L83'>run</a>( 210 "== code 0x1\n" 211 // op ModR/M SIB displacement immediate 212 " 0f 8d 05 00 00 00 \n" // skip 1 instruction 213 " 05 00 00 00 01 \n" 214 " 05 00 00 00 02 \n" 215 ); 216 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 217 "run: 0x00000001 opcode: 0f\n" 218 "run: jump 5\n" 219 "run: 0x0000000c opcode: 05\n" 220 ); 221 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: 0x00000007 opcode: 05"); 222 } 223 224 :(before "End Two-Byte Opcodes Starting With 0f") 225 case 0x8d: { // jump disp32 if !SF 226 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 227 if (SF == <a href='010---vm.cc.html#L88'>OF</a>) { 228 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 229 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 230 } 231 break; 232 } 233 case 0x83: { // jump disp32 if !CF 234 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 235 if (!CF) { 236 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 237 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 238 } 239 break; 240 } 241 242 :(code) 243 void <a href='018jump_disp32.cc.html#L243'>test_jge_disp32_fail</a>() { 244 SF = true; 245 <a href='010---vm.cc.html#L88'>OF</a> = false; 246 <a href='011run.cc.html#L83'>run</a>( 247 "== code 0x1\n" 248 // op ModR/M SIB displacement immediate 249 " 0f 8d 05 00 00 00 \n" // skip 1 instruction 250 " 05 00 00 00 01 \n" 251 " 05 00 00 00 02 \n" 252 ); 253 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 254 "run: 0x00000001 opcode: 0f\n" 255 "run: 0x00000007 opcode: 05\n" 256 "run: 0x0000000c opcode: 05\n" 257 ); 258 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: jump 5"); 259 } 260 261 //:: jump if lesser 262 263 :(before "End Initialize Op Names") 264 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "8c", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if lesser (signed), if SF != <a href='010---vm.cc.html#L88'>OF</a> (jcc/jl/jnge)"); 265 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "82", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if lesser (unsigned), if <a href='010---vm.cc.html#L87'>CF</a> is set (jcc/jb/jnae)"); 266 267 :(code) 268 void <a href='018jump_disp32.cc.html#L268'>test_jl_disp32_success</a>() { 269 <a href='010---vm.cc.html#L86'>ZF</a> = false; 270 SF = true; 271 <a href='010---vm.cc.html#L88'>OF</a> = false; 272 <a href='011run.cc.html#L83'>run</a>( 273 "== code 0x1\n" 274 // op ModR/M SIB displacement immediate 275 " 0f 8c 05 00 00 00 \n" // skip 1 instruction 276 " 05 00 00 00 01 \n" 277 " 05 00 00 00 02 \n" 278 ); 279 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 280 "run: 0x00000001 opcode: 0f\n" 281 "run: jump 5\n" 282 "run: 0x0000000c opcode: 05\n" 283 ); 284 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: 0x00000007 opcode: 05"); 285 } 286 287 :(before "End Two-Byte Opcodes Starting With 0f") 288 case 0x8c: { // jump disp32 if SF and !ZF 289 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 290 if (SF != <a href='010---vm.cc.html#L88'>OF</a>) { 291 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 292 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 293 } 294 break; 295 } 296 case 0x72: { // jump disp32 if CF 297 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 298 if (<a href='010---vm.cc.html#L87'>CF</a>) { 299 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 300 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 301 } 302 break; 303 } 304 305 :(code) 306 void <a href='018jump_disp32.cc.html#L306'>test_jl_disp32_fail</a>() { 307 <a href='010---vm.cc.html#L86'>ZF</a> = false; 308 SF = false; 309 <a href='010---vm.cc.html#L88'>OF</a> = false; 310 <a href='011run.cc.html#L83'>run</a>( 311 "== code 0x1\n" 312 // op ModR/M SIB displacement immediate 313 " 0f 8c 05 00 00 00 \n" // skip 1 instruction 314 " 05 00 00 00 01 \n" 315 " 05 00 00 00 02 \n" 316 ); 317 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 318 "run: 0x00000001 opcode: 0f\n" 319 "run: 0x00000007 opcode: 05\n" 320 "run: 0x0000000c opcode: 05\n" 321 ); 322 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: jump 5"); 323 } 324 325 //:: jump if lesser or equal 326 327 :(before "End Initialize Op Names") 328 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "8e", "jump <a href='040---tests.cc.html#L84'>disp32</a> bytes away if lesser or equal (signed), if <a href='010---vm.cc.html#L86'>ZF</a> is set or SF != <a href='010---vm.cc.html#L88'>OF</a> (jcc/jle/jng)"); 329 <a href='001help.cc.html#L260'>put_new</a>(<a href='010---vm.cc.html#L349'>Name_0f</a>, "86", "jump disp8 bytes away if lesser or equal (unsigned), if <a href='010---vm.cc.html#L86'>ZF</a> is set or <a href='010---vm.cc.html#L87'>CF</a> is set (jcc/jbe/jna)"); 330 331 :(code) 332 void <a href='018jump_disp32.cc.html#L332'>test_jle_disp32_equal</a>() { 333 <a href='010---vm.cc.html#L86'>ZF</a> = true; 334 SF = false; 335 <a href='010---vm.cc.html#L88'>OF</a> = false; 336 <a href='011run.cc.html#L83'>run</a>( 337 "== code 0x1\n" 338 // op ModR/M SIB displacement immediate 339 " 0f 8e 05 00 00 00 \n" // skip 1 instruction 340 " 05 00 00 00 01 \n" 341 " 05 00 00 00 02 \n" 342 ); 343 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 344 "run: 0x00000001 opcode: 0f\n" 345 "run: jump 5\n" 346 "run: 0x0000000c opcode: 05\n" 347 ); 348 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: 0x00000007 opcode: 05"); 349 } 350 351 :(code) 352 void <a href='018jump_disp32.cc.html#L352'>test_jle_disp32_lesser</a>() { 353 <a href='010---vm.cc.html#L86'>ZF</a> = false; 354 SF = true; 355 <a href='010---vm.cc.html#L88'>OF</a> = false; 356 <a href='011run.cc.html#L83'>run</a>( 357 "== code 0x1\n" 358 // op ModR/M SIB displacement immediate 359 " 0f 8e 05 00 00 00 \n" // skip 1 instruction 360 " 05 00 00 00 01 \n" 361 " 05 00 00 00 02 \n" 362 ); 363 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 364 "run: 0x00000001 opcode: 0f\n" 365 "run: jump 5\n" 366 "run: 0x0000000c opcode: 05\n" 367 ); 368 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: 0x00000007 opcode: 05"); 369 } 370 371 :(before "End Two-Byte Opcodes Starting With 0f") 372 case 0x8e: { // jump disp32 if SF or ZF 373 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 374 if (<a href='010---vm.cc.html#L86'>ZF</a> || SF != <a href='010---vm.cc.html#L88'>OF</a>) { 375 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 376 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 377 } 378 break; 379 } 380 case 0x86: { // jump disp32 if ZF or CF 381 const int32_t offset = <a href='011run.cc.html#L447'>next32</a>(); 382 if (<a href='010---vm.cc.html#L86'>ZF</a> || <a href='010---vm.cc.html#L87'>CF</a>) { 383 <a href='003trace.cc.html#L96'>trace</a>(Callstack_depth+1, "run") << "jump " << offset << end(); 384 <a href='010---vm.cc.html#L32'>EIP</a> += offset; 385 } 386 break; 387 } 388 389 :(code) 390 void <a href='018jump_disp32.cc.html#L390'>test_jle_disp32_greater</a>() { 391 <a href='010---vm.cc.html#L86'>ZF</a> = false; 392 SF = false; 393 <a href='010---vm.cc.html#L88'>OF</a> = false; 394 <a href='011run.cc.html#L83'>run</a>( 395 "== code 0x1\n" 396 // op ModR/M SIB displacement immediate 397 " 0f 8e 05 00 00 00 \n" // skip 1 instruction 398 " 05 00 00 00 01 \n" 399 " 05 00 00 00 02 \n" 400 ); 401 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 402 "run: 0x00000001 opcode: 0f\n" 403 "run: 0x00000007 opcode: 05\n" 404 "run: 0x0000000c opcode: 05\n" 405 ); 406 <a href='003trace.cc.html#L292'>CHECK_TRACE_DOESNT_CONTAIN</a>("run: jump 5"); 407 } </pre> </body> </html>


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