v1.0

Version 1.0 marks the first public release of the rv32emu project, aligning with the research paper "Accelerating RISC-V Instruction Set Simulation with Tiered JIT Compilation," which was presented at the VMIL'24 conference.

What's Changed

• Fix the range of for loop in memory_delete() by @sammer1107 in #1
• Use computed-goto to lower instruction dispatch overhead by @sammer1107 in #2
• Fix #6 by @eecheng87 in #8
• Fix csrrwi instruction behavior according to risc-v spec by @feathertw in #10
• Support RISC-V Compressed Instructions by @xiaohan484 in #11
• adding Quake binary and usage information by @Korin777 in #13
• Integrate riscv-arch-test by @xiaohan484 in #12
• Check instruction misalignment for RV32C in the op_branch function by @dougpuob in #14
• build/quake: Lower resolution to speed up game execution by @Korin777 in #15
• Remove duplicate code by @LambertWSJ in #16
• remove goto quit by @LambertWSJ in #17
• fix build issue when close ENABLE_COMPUTED_GOTO by @LambertWSJ in #19
• Unify comment style by @2011eric in #23
• Detect NaN in FADD and FSUB by @2011eric in #24
• Fail to run RV32C tests by @LambertWSJ in #31
• Implement an input event specific system call for SDL by @alanjian85 in #35
• Update demo executable along with manual by @alanjian85 in #38
• Add input system support to Doom demo by @alanjian85 in #41
• Fix set PC restriction when RV32C is enabled by @RinHizakura in #44
• Implement GDB stub for remote debugging by @RinHizakura in #45
• Manage breakpoints with red-black tree by @RinHizakura in #46
• Add support of FCLASS.S by @2011eric in #47
• Enforce zero register in floating point operation by @2011eric in #48
• Fix gdbstub read memory error by @RinHizakura in #50
• Improve fmin/fmax by @2011eric in #51
• Fix comment for consistent comment style by @EagleTw in #54
• Add comments for educational usage by @EagleTw in #55
• gdbstub: Implement memory write and register write by @RinHizakura in #56
• Lower branches in red-black tree by @steven1lung in #58
• Lower branches in red-black tree again by @steven1lung in #59
• Implement ebreak properly by @Risheng1128 in #60
• Apply bidirectional queue design to the input system by @alanjian85 in #62
• Avoid duplications in RISC-V exception handlers by @Risheng1128 in #63
• Pass several privilege tests and fix RV32I comment by @Risheng1128 in #65
• Refactor rbtree previous iterator by @steven1lung in #67
• Implement environment call properly by @Risheng1128 in #66
• Eliminate memory allocations in the system call setup_queue by @alanjian85 in #68
• Add comment for better understanding and consistency by @EagleTw in #70
• Fix memory access violations in queue operation functions by @alanjian85 in #71
• Fix red-black tree's implementation by @alanjian85 in #72
• Refine relative mode submission mechanisms by @alanjian85 in #76
• Detect toolchain automatically by @Risheng1128 in #77
• Update demo binaries by @alanjian85 in #83
• SDL: Allow window resizing by @alanjian85 in #84
• an annotation typo in elf.h by @zoanana990 in #85
• Place floating point routines into a dedicated header by @2011eric in #86
• Decouple instruction decoding from emulation unit by @Risheng1128 in #79
• Introduce basic block by @Risheng1128 in #91
• Shorten the time spent checking instruction length by @qwe661234 in #92
• Break instruction decoding and emulation into separate stage by @jserv in #93
• Set rv->compressed for instruction ecall and ebreak by @qwe661234 in #96
• Patch for issue #98 by @qwe661234 in #100
• Refine the SDL-oriented system calls declaration by @alanjian85 in #102
• tests: line: Use fixed-point arithmetic by @maromaSamsa in #107
• Use interger shortcut in floating point routines by @2011eric in #109
• Migrate to RISC-V Compatibility Framework (RISCOF) by @Risheng1128 in #108
• Edit pointer incremental according to CodeQL analysis by @EagleTw in #112
• Add CodeQL workflow for GitHub code scanning by @lgtm-com in #89
• Fix memory leak by @qwe661234 in #113
• Reflect the introduction of RISCOF by @2011eric in #111
• Rollback partial wrong implemented code in pr #89 by @EagleTw in #114
• Update mini-gdbstub for the on_interrupt feature by @RinHizakura in #115
• Remove the computed-goto option by @Risheng1128 in #116
• Prevent the misleading information about RISCOF by @Risheng1128 in #117
• Add adaptive replacement cache by @qwe661234 in #118
• fix: Fix the typo pyton by @howjmay in #119
• Extend basic block without aggressive memory copy by @qwe661234 in #121
• Improve memory read/write by @qwe661234 in #123
• Correct the API descriptions for memory pool by @willwillhi1 in #124
• Implement LFU as default cache along with memory pool by @qwe661234 in #125
• Fix the implementations of FCVT.S.W and FCVT.S.WU by @alanjian85 in #126
• Fix make misalign in Makefile by @qwe661234 in #127
• Update mini-gdbstub and the corresponding API by @RinHizakura in #129
• Consolidate CI/CD test for gdbstub by @RinHizakura in #130
• Employ tracing extended basic blocks by @qwe661234 in #133
• Introduce preliminary macro operation fusion by @qwe661234 in #132
• Fix spicious pointer scaling by @qwe661234 in #138
• Add an option to dump registers as JSON by @long-long-float in #128
• Fix incorrect performance counter by @qwe661234 in #140
• Add test case for map API by @EagleTw in #141
• Map enhancement by @EagleTw in #144
• tests: Add script to extract CoreMark results by @qwe661234 in #143
• Add missing EBB information in cbeqz and cbnez by @qwe661234 in #147
• CI: Enforce newline at end of files by @jserv in #154
• Fix incorrectly generated config file by @2011eric in #174
• Correct a typo in mpool.h by @felixonmars in #178
• Fix typo in comment by @ChinYikMing in #179
• Improve consistency of accessing rv's registers by @ChinYikMing in #180
• Fix return NULL when malloc failed by @ChinYikMing in #181
• Call appropriate release function by @ChinYikMing in #182
• Improve macro-op fusion: skip nop and add lui + addi by @qwe661234 in #184
• Support passing argc and argv to target program by @ChinYikMing in #185
• Fix typos in README by @steven1lung in #186
• Implement static instruction usage histogram by @ChinYikMing in #187
• Support static analysis of registers by @ChinYikMing in #192
• Fix calculation of percentage and update README by @ChinYikMing in #193
• Fix total frequency calculation and update example screenshots by @ChinYikMing in #195
• Introduce sound related system calls by @ChinYikMing in #197
• Rebuilt doom for sound support by @ChinYikMing in #198
• Try to fix rv_histogram behaves weird on build/hello.elf by @gagachang in #199
• Substitute memset/memcpy calls with faster alternatives by @qwe661234 in #196
• Fix typo by @visitorckw in #203
• CI: Decouple arch-tests to shorten major validations by @jserv in #204
• Enhance sfx_handler to accomodate more formats by @ChinYikMing in #202
• Rebuilt quake for sound support by @ChinYikMing in #206
• Let read/write reuse the preallocated memory by @qwe661234 in #205
• tests: map: Enhance random number generator by @visitorckw in #209
• Improve calc_fclass() with binary decision tree by @visitorckw in #207
• Fix round_pow2 function for edge cases by @visitorckw in #210
• Refactor time retrieval functions by @visitorckw in #212
• CI: Implementing benchmark regression tests by @ChinYikMing in #213
• Update README by @ChinYikMing in #215
• Get rid of rv->X[rv_reg_zero] = 0 completely by @qwe661234 in #216
• Add comments about CSRs by @EagleTw in #217
• Fix typo by @visitorckw in #220
• Fix memory leak by @visitorckw in #222
• Tweak memory allocation size for portability by @ChinYikMing in #221
• Link the register jump by @qwe661234 in #224
• Add a new fusion instruction and remove unnecessary ones by @qwe661234 in #227
• Fix constant optimization and fused instruction by @qwe661234 in #233
• Reclaim memory when destroying mpool correctly by @RinHizakura in #235
• Reduce memory usage for instruction block by @RinHizakura in #232
• Disable control flow integrity for instruction dispatch by @jserv in #236
• Remove useless IR when fusing instructions by @qwe661234 in #234
• Macro operation fusion: sequential shift instructions by @qwe661234 in #237
• Fuse reordered lw/sw instructions by @qwe661234 in #240
• Handle csr mstatus and misa correctly by @qwe661234 in #243
• Remove tailcall member in rv_insn_t by @RinHizakura in #245
• Manipulate csr_cycle and PC by registers. Drop insn_len by @qwe661234 in #244
• Move block and IRs memory pool to rv by @qwe661234 in #246
• Enforce 'musttail' for assured tail call optimization by @jserv in #247
• Remove unused macro by @visitorckw in #248
• Fix rb_remove() key comparison by @visitorckw in #250
• Unify the hash function of cache and map by @qwe661234 in #249
• Fix cache tests fail after adding newline at the end of files by @visitorckw in #251
• Remove trailing whitespace by @EagleTw in #252
• Enable link-time optimization by default by @jserv in #253
• Fix the inaccuracy in the number of IR elements to be removed by @qwe661234 in #256
• Fix syscall_read to handle partial reads and errors by @visitorckw in #257
• Improves scripts and add docker image by @henrybear327 in #259
• Comprehensive F extension support with SoftFloat integration by @visitorckw in #260
• Remove unused 'isnanf' and 'isinff' functions by @visitorckw in #262
• Enable exit-on-error setting to gdbstub-test.sh by @henrybear327 in #263
• Fix decode annotation error by @visitorckw in #264
• Fix a potential issue where the block_find() might return NULL by @henrybear327 in #265
• Fix softfloat build failure by @visitorckw in #266
• Apply branch prediction for indirect jump by @qwe661234 in #269
• Remove memory allocation for ELF sections by @LambertWSJ in #270
• Improve efficiency of branch history table by @RinHizakura in #271
• rv_histogram: Make it more verbose by @ChinYikMing in #276
• Implement file path sanitation by @henrybear327 in #273
• Add benchmarks descriptions by @qwe661234 in #278
• Fix an error in memset's size argument. by @henrybear327 in #280
• CI: Publish Docker image to Docker Hub by @henrybear327 in #281
• CI: Build executable files during Docker image generation by @henrybear327 in #285
• Fix cache_free fucntion by @qwe661234 in #291
• Fix constant optimization on RV32F instructions by @qwe661234 in #292
• Enable build rv32emu using Emscripten by @ChinYikMing in #293
• Introduce a tier-1 JIT compiler based on x86-64 architecture by @qwe661234 in #289
• Fix potential security issue in benchmark script by @ChinYikMing in #295
• Remove unused ARC implementation by @jserv in #299
• Refactor with macro ARRAYS_SIZE by @ChinYikMing in #300
• Fix syscall error handling by @visitorckw in #303
• Fix potential buffer overflow and memory leak by @visitorckw in #302
• Consolidate public header by integrating src/state.h by @ChinYikMing in #305
• CI: Enable Arm64 host by @jserv in #306
• CI: Specify safe.directory for Arm64 by @jserv in #309
• Introduce a tier-1 JIT compiler based on aarch64 architecture by @qwe661234 in #304
• Consolidate memory allocation by @ChinYikMing in #307
• Fix invalid free and memory leak by @visitorckw in #314
• Remove GNU Toolchain for RISC-V from Dockerfile by @henrybear327 in #290
• Fix alignment exceptions issue for F and C extensions by @visitorckw in #317
• Correctly remove the template for disabled extension @qwe661234 by @qwe661234 in #319
• CI: Generate Docker image with commit SHA1 #287 by @henrybear327 in #320
• CI: Generate Docker image with Alpine Linux by @henrybear327 in #321
• Support RV32FC by @fourcolor in #316
• Fix rounding mode selection by @visitorckw in #323
• Fix cmv constant optimization bug by @fourcolor in #325
• Fix signed integer overflow in RV32IM by @visitorckw in #324
• CI: Skip pipelines if no source files are changed by @henrybear327 in #326
• Enforce doubly-linked chained block by @qwe661234 in #331
• Correct wrong opcode of conditional jump by @qwe661234 in #335
• Add profiler by @qwe661234 in #333
• Fix csrrc instruction behavior when rs1 is 0 by @visitorckw in #338
• Refine file naming scheme for profiling data by @ChinYikMing in #337
• Refine the API in the public header by @ChinYikMing in #340
• Fix a bug cache_create() by @henrybear327 in #342
• Fix a bug where a file descriptor isn't closed after allocation by @henrybear327 in #344
• Fix a typo in rb_insert by @henrybear327 in #345
• Check if a pointer is NULL before dereferencing by @henrybear327 in #346
• Improve error handling in elf_open() by @henrybear327 in #343
• Fix illegal instruction handling for SLLI, SRLI, and SRAI by @visitorckw in #348
• Introducing local register allocation for the tier-1 JIT compiler by @qwe661234 in #341
• Enable shallow git submodule by @howjmay in #350
• Drop memory_read_str function by @ChinYikMing in #351
• Fix signed integer comparison in AMOMIN.W and AMOMAX.W by @visitorckw in #352
• Fix pushing images automatically to DockerHub by @henrybear327 in #353
• Refine I/O comments by @ChinYikMing in #354
• Improve the performance of indirect jump for T1C by @qwe661234 in #355
• Bind I/O handlers during emulator initialization by @ChinYikMing in #357
• Fix reading uninitialized variable right_red in map.c (#349) by @henrybear327 in #362
• Use the canonical order of RISC-V extension names by @alanjian85 in #363
• Fix compile warning in JIT without RV32F/C by @visitorckw in #368
• CI: Add undefined behavior test by @visitorckw in #366
• Fix a memory leak in main.c by @henrybear327 in #370
• Fix RV32A error by @visitorckw in #367
• Refine cleanup logic in main.c by @ChinYikMing in #372
• End the indirect jump when potential hotspot is detected by @qwe661234 in #371
• CI: Add Clang static analyzer by @henrybear327 in #361
• Fix several critical errors in RV32A implementations by @visitorckw in #373
• Add RV32A architectural tests by @visitorckw in #374
• Add assertion to prevent buffer overflow by @vacantron in #376
• Tweak build rules for WebAssembly by @ChinYikMing in #377
• Avoid generating machine code repeatly for same basic block by @qwe661234 in #378
• Refine rv_step function prototype by @ChinYikMing in #380
• Tweak build rules to link correct SDL library by @ChinYikMing in #383
• Eliminate redundant register swapping in JIT by @vacantron in #384
• Enable run video games using WebAssembly by @ChinYikMing in #385
• Add coi-serviceworker by @ChinYikMing in #388
• CI: deploy wasm by @ChinYikMing in #389
• Fix WebAssembly CI running condition by @ChinYikMing in #392
• Fix missing dirty flag in cmv instruction by @vacantron in #395
• Fix hardcoded sha1sum command and compare sha1 value by @ChinYikMing in #393
• Remove redundant pipe symbol by @ChinYikMing in #396
• CI: Tweak WebAssembly CI event by @ChinYikMing in #403
• Fix ELF typo in html and output process completion indicator by @ChinYikMing in #404
• Implement features used by fenster by @alanjian85 in #364
• Rebuild ELF files for Doom and Quake by @alanjian85 in #406
• Filter out message-less demo programs from WebAssembly demo page by @ChinYikMing in #407
• CI: Bump dependency by @ChinYikMing in #409
• CI: Trigger WebAssembly CI when ELF executables rebuilt by @ChinYikMing in #408
• Fix missing colon in README by @visitorckw in #411
• Fix trailing whitespace by @visitorckw in #412
• Streamline rounding modes checks and settings in RV32F by @visitorckw in #410
• Support hosting WebAssembly demo page locally by @ChinYikMing in #413
• Remove the backward jump from the T1C condition by @qwe661234 in #414
• Add benchmarks from rv8-bench and nbench by @qwe661234 in #415
• Fix wasm build failed in deploy-wasm CI by @ChinYikMing in #416
• Add code cache flush mechanism by @qwe661234 in #417
• jit: Implement register allocation by @vacantron in #418
• Remove extra comma of SUPPORTED_SYSCALLS by @p96114175 in #421
• Fix the typo in the cache_create function comment by @p96114175 in #422
• Fix compilation error caused by missing softfloat dependency by @visitorckw in #423
• CI: Parallelize compilation for faster testing by @visitorckw in #424
• CI: Reinstate rv32fc test suite by @visitorckw in #426
• Fix typo by @ChinYikMing in #427
• Consolidate AMO RVOP coding consistency by @ChinYikMing in #428
• Fix typo by @p96114175 in #429
• Fix typo by @p96114175 in #430
• Fix typo of picture name by @p96114175 in #431
• Raise illegal instruction exception for Zicsr by @ChinYikMing in #432
• Fix syscall lseek() to return correct offset by @visitorckw in #434
• Consolidate the block_translate fucntion by @qwe661234 in #437
• Optimize syscall_write() to avoid redundant checks and FILE* retrievals by @visitorckw in #436
• Refactor mpool_calloc function by @p96114175 in #433
• Implement minimal SBI v0.3 by @ChinYikMing in #439
• Correctly update the information of hotspot by @qwe661234 in #440
• Fix typo in rv_gettimeofday comment by @p96114175 in #442
• Fix the microsecond-to-nanosecond conversion in rv_clock_gettime() by @alanjian85 in #360
• Modify get_time_info() to return seconds and nanoseconds by @visitorckw in #445
• Fix canonical order of RISC-V extension names in help information by @visitorckw in #447
• Specify can_branch and decode the sret instruction by @ChinYikMing in #443
• CI: Bump riscv-gnu-toolchain by @jserv in #444
• Remove libc subsituation by @qwe661234 in #450
• Add sret case to insn_is_unconditional_branch by @ChinYikMing in #452
• Fix typo by @p96114175 in #453
• jit: Fix overflow handling in function muldivmod by @qwe661234 in #454
• Implement tier-2 JIT compiler to accelerate ISS by @qwe661234 in #425
• Preliminary support "Svinval" Standard Extension by @ChinYikMing in #458
• Update riscv GCC toolchain and sail reference device dockerfiles by @henrybear327 in #459
• Initialize ir->branch_table->PC with safe value by @ChinYikMing in #462
• jit: Introduce background compilation by @qwe661234 in #457
• Add memory ordering instruction FENCE by @ChinYikMing in #464
• Fix incorrect condition in background thread by @vacantron in #465
• Fix a typo and remove outdated comment by @henrybear327 in #468
• Fix benchmark CI pipeline by @henrybear327 in #460
• Reintroduce benchmark.yml by @henrybear327 in #469
• Improve JALR execution with JIT-cache by @vacantron in #471
• Add dummy WFI implementation by @ChinYikMing in #470
• Fix jit-cache without T2C enabled by @vacantron in #476
• CI: Bump changed-files by @ChinYikMing in #478
• Fix unexpected "JALR" behavior in JIT by @vacantron in #479
• Automate prebuilt executable updates via GitHub Actions by @vacantron in #474
• Automate doom, quake, and scimark2 builds by @vacantron in #480
• Add missing condition in CI by @vacantron in #481
• Enhance precision and safety in time calculations by @visitorckw in #483
• Allocate adequate memory for running arch-test by @jserv in #485
• Bring wasm service up by @ChinYikMing in #487
• CI: Fix missing file in WebAssembly deployment by @ChinYikMing in #488
• CI: Install wget package for Alpine Linux by @jserv in #489
• Move artifact target under emcc build condition by @ChinYikMing in #493
• Avoid re-fetching binaries when they exist by @vacantron in #492
• Fix gdbstub dependency and enable parallel compilation for faster CI by @visitorckw in #494
• CI: Bump prebuilt GNU Toolchains by @jserv in #495
• Add missing bar to separate filename by @howjmay in #496
• CI: Bump Ubuntu to 24.04-LTS by @jserv in #497
• CI: Fix xPack toolchain not found when using by @ChinYikMing in #498

New Contributors

• @sammer1107 made their first contribution in #1
• @eecheng87 made their first contribution in #8
• @feathertw made their first contribution in #10
• @xiaohan484 made their first contribution in #11
• @Korin777 made their first contribution in #13
• @dougpuob made their first contribution in #14
• @2011eric made their first contribution in #23
• @alanjian85 made their first contribution in #35
• @steven1lung made their first contribution in #58
• @Risheng1128 made their first contribution in #60
• @zoanana990 made their first contribution in #85
• @jserv made their first contribution in #93
• @maromaSamsa made their first contribution in #107
• @lgtm-com made their first contribution in #89
• @howjmay made their first contribution in #119
• @willwillhi1 made their first contribution in #124
• @long-long-float made their first contribution in #128
• @felixonmars made their first contribution in #178
• @gagachang made their first contribution in #199
• @visitorckw made their first contribution in #203
• @henrybear327 made their first contribution in #259
• @fourcolor made their first contribution in #316
• @vacantron made their first contribution in #376
• @p96114175 made their first contribution in #421

Full Changelog: https://github.com/sysprog21/rv32emu/commits/v1.0