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GeezerVison is showing github.com — lpython/src/lpython/tests/test_asm.cpp at main · lcompilers/lpython Expand file tree/ Copy pathtest_asm.cppMore file actions 646 lines (550 loc) · 18.2 KB / Copy pathtest_asm.cppFile metadata and controls646 lines (550 loc) · 18.2 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 #include <tests/doctest.h> #include <iostream> #include <sstream> #include <libasr/codegen/x86_assembler.h> using LCompilers::X86Reg; // Print any vector like iterable to a string template <class T> inline std::ostream &print_vec(std::ostream &out, T &d) { out << "["; for (auto p = d.begin(); p != d.end(); p++) { if (p != d.begin()) out << ", "; out << *p; } out << "]"; return out; } // Specialization for `const std::vector<uint8_t>` template <> inline std::ostream &print_vec(std::ostream &out, const std::vector<uint8_t> &d) { out << "["; for (auto p = d.begin(); p != d.end(); p++) { if (p != d.begin()) out << ", "; out << LCompilers::i2s(*p); } out << "]"; return out; } namespace doctest { // Convert std::vector<T> to string for doctest template<typename T> struct StringMaker<std::vector<T>> { static String convert(const std::vector<T> &value) { std::ostringstream oss; print_vec(oss, value); return oss.str().c_str(); } }; } // Strips the first character (\n) std::string S(const std::string &s) { return s.substr(1, s.size()); } TEST_CASE("Store and get instructions") { Allocator al(1024); LCompilers::X86Assembler a(al, false); a.asm_pop_r32(X86Reg::eax); a.asm_jz_imm8(13); LCompilers::Vec<uint8_t> &code = a.get_machine_code(); CHECK(code.size() == 3); #ifdef LFORTRAN_ASM_PRINT std::string asm_code = a.get_asm(); std::string ref = S(R"""( BITS 32 org 0x08048000 pop eax jz 0x0d )"""); CHECK(asm_code == ref); #endif } TEST_CASE("modrm_sib_disp") { Allocator al(1024); LCompilers::Vec<uint8_t> code; LCompilers::X86Reg base; LCompilers::X86Reg index; std::vector<uint8_t> ref; base = LCompilers::X86Reg::ecx; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 0, false); ref = {0xd9}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ecx; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 0, true); ref = {0x19}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::esi; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 0, true); ref = {0x1e}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 0, true); ref = {0x5d, 0x00}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 3, true); ref = {0x5d, 0x03}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, -3, true); ref = {0x5d, 0xfd}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 127, true); ref = {0x5d, 0x7f}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 128, true); ref = {0x9d, 0x80, 0x00, 0x00, 0x00}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, -128, true); ref = {0x5d, 0x80}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, -129, true); ref = {0x9d, 0x7f, 0xff, 0xff, 0xff}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::esp; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 0, true); ref = {0x1c, 0x24}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::eax; index = LCompilers::X86Reg::ebx; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, &index, 1, 0, true); ref = {0x1c, 0x18}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebx; index = LCompilers::X86Reg::eax; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, &index, 1, 0, true); ref = {0x1c, 0x03}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebx; index = LCompilers::X86Reg::eax; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, &index, 2, 0, true); ref = {0x1c, 0x43}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebx; index = LCompilers::X86Reg::eax; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, &index, 4, 0, true); ref = {0x1c, 0x83}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebx; index = LCompilers::X86Reg::eax; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, &index, 8, 0, true); ref = {0x1c, 0xc3}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebx; index = LCompilers::X86Reg::eax; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, &index, 8, 127, true); ref = {0x5c, 0xc3, 0x7f}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebx; index = LCompilers::X86Reg::eax; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, &index, 8, 128, true); ref = {0x9c, 0xc3, 0x80, 0x00, 0x00, 0x00}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebx; index = LCompilers::X86Reg::eax; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, &index, 2, 1, true); ref = {0x5c, 0x43, 0x01}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebx; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ebx, &base, nullptr, 1, 1, true); ref = {0x5b, 0x01}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; index = LCompilers::X86Reg::ebx; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ecx, &base, &index, 4, 1, true); ref = {0x4c, 0x9d, 0x01}; CHECK( code.as_vector() == ref ); base = LCompilers::X86Reg::ebp; index = LCompilers::X86Reg::ebx; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ecx, &base, &index, 4, 128, true); ref = {0x8c, 0x9d, 0x80, 0x00, 0x00, 0x00}; CHECK( code.as_vector() == ref ); index = LCompilers::X86Reg::ebx; code.reserve(al, 32); LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ecx, nullptr, &index, 4, 1, true); ref = {0x0c, 0x9d, 0x01, 0x00, 0x00, 0x00}; CHECK( code.as_vector() == ref ); index = LCompilers::X86Reg::ebx; code.reserve(al, 32); CHECK_THROWS_AS(LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ecx, nullptr, &index, 3, 1, true), LCompilers::AssemblerError); index = LCompilers::X86Reg::ebx; code.reserve(al, 32); CHECK_THROWS_AS(LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ecx, nullptr, nullptr, 1, 0, false), LCompilers::AssemblerError); index = LCompilers::X86Reg::ebx; code.reserve(al, 32); CHECK_THROWS_AS(LCompilers::modrm_sib_disp(code, al, LCompilers::X86Reg::ecx, nullptr, nullptr, 1, 0, true), LCompilers::AssemblerError); } TEST_CASE("Memory operand") { Allocator al(1024); LCompilers::X86Assembler a(al, false); X86Reg base = X86Reg::ebx; X86Reg index = X86Reg::ecx; a.asm_inc_m32(&base, nullptr, 1, 0); a.asm_inc_m32(&base, nullptr, 1, 3); a.asm_inc_m32(&base, nullptr, 1, -2); a.asm_inc_m32(&base, &index, 1, 2); a.asm_inc_m32(&base, &index, 2, 2); a.asm_inc_m32(&base, &index, 4, 2); a.asm_inc_m32(&base, &index, 8, 2); a.asm_inc_m32(&base, &index, 1, -2); a.asm_inc_m32(&base, &index, 1, 1024); a.asm_inc_m32(&base, &index, 2, 0); a.asm_inc_m32(nullptr, &index, 1, 2); a.asm_inc_m32(nullptr, &index, 2, 2); a.asm_inc_m32(nullptr, &index, 4, 2); a.asm_inc_m32(nullptr, &index, 8, 2); a.asm_inc_m32(nullptr, &index, 1, -2); a.asm_inc_m32(nullptr, &index, 1, 1024); a.asm_inc_m32(nullptr, &index, 2, 0); #ifdef LFORTRAN_ASM_PRINT std::string asm_code = a.get_asm(); std::string ref = S(R"""( BITS 32 org 0x08048000 inc [ebx] inc [ebx+3] inc [ebx-2] inc [ebx+ecx+2] inc [ebx+2*ecx+2] inc [ebx+4*ecx+2] inc [ebx+8*ecx+2] inc [ebx+ecx-2] inc [ebx+ecx+1024] inc [ebx+2*ecx] inc [ecx+2] inc [2*ecx+2] inc [4*ecx+2] inc [8*ecx+2] inc [ecx-2] inc [ecx+1024] inc [2*ecx] )"""); CHECK(asm_code == ref); #endif } TEST_CASE("elf32 binary") { Allocator al(1024); LCompilers::X86Assembler a(al, false); LCompilers::emit_elf32_header(a); std::string msg = "Hello World!\n"; a.add_label("msg"); a.asm_db_imm8(msg.c_str(), msg.size()); a.add_label("_start"); // ssize_t write(int fd, const void *buf, size_t count); a.asm_mov_r32_imm32(LCompilers::X86Reg::eax, 4); // sys_write a.asm_mov_r32_imm32(LCompilers::X86Reg::ebx, 1); // fd (stdout) a.asm_mov_r32_imm32(LCompilers::X86Reg::ecx, a.get_defined_symbol("msg").value); // buf a.asm_mov_r32_imm32(LCompilers::X86Reg::edx, msg.size()); // count a.asm_int_imm8(0x80); a.asm_call_label("exit"); a.add_label("exit"); // void exit(int status); a.asm_mov_r32_imm32(LCompilers::X86Reg::eax, 1); // sys_exit a.asm_mov_r32_imm32(LCompilers::X86Reg::ebx, 0); // exit code a.asm_int_imm8(0x80); // syscall LCompilers::emit_elf32_footer(a); a.verify(); a.save_binary("write32"); // Note: both the machine code as well as the assembly below is checked // for consistency using // // nasm -f bin write32.asm // // and the nasm generated `write32` binary exactly agrees with our binary. // // If any of the two tests below are modified, they have to be checked that // they are still consistent with each other and that they work. #ifdef LFORTRAN_ASM_PRINT a.save_asm("write32.asm"); std::string asm_code = a.get_asm(); std::string ref = S(R"""( BITS 32 org 0x08048000 ehdr: db 0x7f db 0x45 db 0x4c db 0x46 db 0x01 db 0x01 db 0x01 db 0x00 db 0x00 db 0x00 db 0x00 db 0x00 db 0x00 db 0x00 db 0x00 db 0x00 dw 0x0002 dw 0x0003 dd 0x00000001 dd _start dd e_phoff dd 0x00000000 dd 0x00000000 dw ehdrsize dw phdrsize dw 0x0001 dw 0x0000 dw 0x0000 dw 0x0000 phdr: dd 0x00000001 dd 0x00000000 dd 0x08048000 dd 0x08048000 dd filesize dd filesize dd 0x00000005 dd 0x00001000 phdr_end: ehdrsize equ phdr - ehdr phdrsize equ phdr_end - phdr e_phoff equ phdr - ehdr msg: db 0x48 db 0x65 db 0x6c db 0x6c db 0x6f db 0x20 db 0x57 db 0x6f db 0x72 db 0x6c db 0x64 db 0x21 db 0x0a _start: mov eax, 0x00000004 mov ebx, 0x00000001 mov ecx, 0x08048054 mov edx, 0x0000000d int 0x80 call exit exit: mov eax, 0x00000001 mov ebx, 0x00000000 int 0x80 footer: filesize equ footer - ehdr )"""); CHECK(asm_code == ref); #endif std::vector<uint8_t> cref; cref = {0x7f, 0x45, 0x4c, 0x46, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x61, 0x80, 0x04, 0x08, 0x34, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x20, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x04, 0x08, 0x00, 0x80, 0x04, 0x08, 0x88, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x57, 0x6f, 0x72, 0x6c, 0x64, 0x21, 0x0a, 0xb8, 0x04, 0x00, 0x00, 0x00, 0xbb, 0x01, 0x00, 0x00, 0x00, 0xb9, 0x54, 0x80, 0x04, 0x08, 0xba, 0x0d, 0x00, 0x00, 0x00, 0xcd, 0x80, 0xe8, 0x00, 0x00, 0x00, 0x00, 0xb8, 0x01, 0x00, 0x00, 0x00, 0xbb, 0x00, 0x00, 0x00, 0x00, 0xcd, 0x80}; CHECK( a.get_machine_code().as_vector() == cref ); } TEST_CASE("print") { Allocator al(1024); LCompilers::X86Assembler a(al, false); std::string msg = "Hello World!\n"; LCompilers::emit_elf32_header(a); a.add_label("_start"); LCompilers::emit_print(a, "msg", msg.size()); a.asm_call_label("exit"); LCompilers::emit_exit(a, "exit", 0); LCompilers::emit_data_string(a, "msg", msg); LCompilers::emit_elf32_footer(a); a.verify(); a.save_binary("print32"); } TEST_CASE("cmp") { Allocator al(1024); LCompilers::X86Assembler a(al, false); std::string msg1 = "Branch 1\n"; std::string msg2 = "Branch 2\n"; LCompilers::emit_elf32_header(a); a.add_label("_start"); // if (3 >= 5) then a.asm_mov_r32_imm32(LCompilers::X86Reg::eax, 3); a.asm_cmp_r32_imm8(LCompilers::X86Reg::eax, 5); a.asm_jge_label(".then"); a.asm_jmp_label(".else"); a.add_label(".then"); LCompilers::emit_print(a, "msg1", msg1.size()); a.asm_jmp_label(".endif"); a.add_label(".else"); LCompilers::emit_print(a, "msg2", msg2.size()); a.add_label(".endif"); a.asm_call_label("exit"); LCompilers::emit_exit(a, "exit", 0); LCompilers::emit_data_string(a, "msg1", msg1); LCompilers::emit_data_string(a, "msg2", msg2); LCompilers::emit_elf32_footer(a); a.verify(); a.save_binary("cmp32"); } TEST_CASE("subroutines") { Allocator al(1024); LCompilers::X86Assembler a(al, false); std::string msg1 = "Subroutine 1, calling 2\n"; std::string msg1b = "Subroutine 1, done\n"; std::string msg2 = "Subroutine 2, modifying a message\n"; LCompilers::emit_elf32_header(a, 7); a.add_label("sub1"); LCompilers::emit_print(a, "msg1", msg1.size()); a.asm_call_label("sub2"); LCompilers::emit_print(a, "msg1b", msg1b.size()); a.asm_ret(); a.add_label("sub2"); LCompilers::emit_print(a, "msg2", msg2.size()); a.asm_mov_r32_imm32(LCompilers::X86Reg::eax, 0x42414443); a.asm_mov_r32_label(LCompilers::X86Reg::ebx, "msg1b"); LCompilers::X86Reg base = LCompilers::X86Reg::ebx; a.asm_mov_m32_r32(&base, nullptr, 1, 5, LCompilers::X86Reg::eax); a.asm_ret(); LCompilers::emit_exit(a, "exit", 0); a.add_label("_start"); a.asm_call_label("sub1"); a.asm_call_label("exit"); LCompilers::emit_data_string(a, "msg1", msg1); LCompilers::emit_data_string(a, "msg1b", msg1b); LCompilers::emit_data_string(a, "msg2", msg2); LCompilers::emit_elf32_footer(a); a.verify(); a.save_binary("subroutines32"); } TEST_CASE("subroutine args") { Allocator al(1024); LCompilers::X86Assembler a(al, false); std::string msg1 = "Subroutine 1\n"; std::string msg2 = "Sum equal to 9\n"; std::string msg3 = "Sum not equal to 9\n"; LCompilers::emit_elf32_header(a, 7); a.add_label("sub1"); // Initialize stack a.asm_push_r32(X86Reg::ebp); a.asm_mov_r32_r32(X86Reg::ebp, X86Reg::esp); a.asm_sub_r32_imm8(X86Reg::esp, 4); // one local variable LCompilers::emit_print(a, "msg1", msg1.size()); X86Reg base = X86Reg::ebp; // mov eax, [ebp+8] // first argument a.asm_mov_r32_m32(X86Reg::eax, &base, nullptr, 1, 8); // mov ecx, [ebp+12] // second argument a.asm_mov_r32_m32(X86Reg::ecx, &base, nullptr, 1, 12); // mov [ebp-4], eax // move eax to a local variable a.asm_mov_m32_r32(&base, nullptr, 1, -4, X86Reg::eax); // add [ebp-4], ecx // add ecx a.asm_add_m32_r32(&base, nullptr, 1, -4, X86Reg::ecx); // mov eax, [ebp-4] // move the sum into the return value (eax) a.asm_mov_r32_m32(X86Reg::eax, &base, nullptr, 1, -4); // Restore stack a.asm_mov_r32_r32(X86Reg::esp, X86Reg::ebp); a.asm_pop_r32(X86Reg::ebp); a.asm_ret(); LCompilers::emit_exit(a, "exit", 0); a.add_label("_start"); // Push arguments to stack (last argument first) a.asm_push_imm8(5); // second argument a.asm_push_imm8(4); // first argument a.asm_call_label("sub1"); // Remove arguments from stack: 2 arguments, 4 bytes each a.asm_add_r32_imm8(LCompilers::X86Reg::esp, 2*4); a.asm_cmp_r32_imm8(LCompilers::X86Reg::eax, 9); a.asm_je_label(".then"); a.asm_jmp_label(".else"); a.add_label(".then"); LCompilers::emit_print(a, "msg2", msg2.size()); a.asm_jmp_label(".endif"); a.add_label(".else"); LCompilers::emit_print(a, "msg3", msg3.size()); a.add_label(".endif"); a.asm_call_label("exit"); LCompilers::emit_data_string(a, "msg1", msg1); LCompilers::emit_data_string(a, "msg2", msg2); LCompilers::emit_data_string(a, "msg3", msg3); LCompilers::emit_elf32_footer(a); a.verify(); a.save_binary("subroutines_args32"); } TEST_CASE("print integer") { Allocator al(1024); LCompilers::X86Assembler a(al, false); LCompilers::emit_elf32_header(a); emit_data_string(a, "string_neg", "-"); // - symbol for printing negative ints/floats LCompilers::emit_print_int(a, "print_int"); LCompilers::emit_exit(a, "exit", 0); a.add_label("_start"); a.asm_push_imm32(1234); a.asm_call_label("print_int"); a.asm_add_r32_imm8(LCompilers::X86Reg::esp, 4); a.asm_push_imm32(5678); a.asm_call_label("print_int"); a.asm_add_r32_imm8(LCompilers::X86Reg::esp, 4); a.asm_call_label("exit"); LCompilers::emit_elf32_footer(a); a.verify(); a.save_binary("print_integer"); } |
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