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Author SHA1 Message Date
Fabian b96e36ddd4 Allow dev tools on electron 2020-08-30 19:37:15 -05:00
Ernest Wong ad3bf2afe0 Filestorage: Export classes properly to all platforms 2020-08-30 19:37:15 -05:00
Ernest Wong c928964562 Minor: Tidy quotes and spacing 2020-08-30 19:37:15 -05:00
Ernest Wong c273741405 Add tests for file storage chunking 2020-08-30 19:37:15 -05:00
Ernest Wong a841194d28 Filestorage: Reuse IDBObjectStore throughout transaction 
- More like passing the same reference to it when calling db_get/set.
- In reality, it was still the same store object being accessed, but
this commit improves the coherence of the db_get/set helper methods.
 2020-08-30 19:37:15 -05:00
Ernest Wong bf35f0ab0b Filestorage: Avoid additional allocation for small files 2020-08-30 19:37:15 -05:00
Ernest Wong 840415a052 Filestorage: (minor) Improve naming can_uncache() -> uncache() 2020-08-30 19:37:15 -05:00
Ernest Wong d6bfa143ed Filestorage: Don't rely on errors to select type of storage 2020-08-30 19:37:15 -05:00
Ernest Wong 738edf7b6c Filestorage: Initialise IndexedDB before constructor 
Simplifies several checks
 2020-08-30 19:37:15 -05:00
Ernest Wong 9db722f71f Filestorage: Improve usefulness of IndexedDB error messages 2020-08-30 19:37:15 -05:00
Ernest Wong c625bba498 Filestorage: Implement cache cleanup - avoid memory growth 2020-08-30 19:37:15 -05:00
Ernest Wong 3a74e66b72 Filestorage: Expose load_from_server 2020-08-30 19:37:15 -05:00
Ernest Wong 62c880b415 Filestorage: Integrate chunking and revert unnecessary chunking 
- Integrate new FileStorage interface with lib/filesystem.js
- Simplify the FileStorage interface with the intention that it only
serves read-only files.
 2020-08-30 19:37:15 -05:00
Ernest Wong afd27597d7 Filestorage: Draft chunking behind new FileStorage interface 2020-08-30 19:37:15 -05:00
Ernest Wong efa45a3d11 Filestorage: Make filestorage .get .set atomic 
...by sticking to the same transaction throughout an operation.
 2020-08-30 19:37:15 -05:00
Ernest Wong 7cfe865556 Filestorage: Draft chunking behind existing FileStorage interface 2020-08-30 19:37:15 -05:00
Ernest Wong 8b64844d27 Filestorage: Give project-related name for IndexedDB Storage 2020-08-30 19:37:15 -05:00
Ernest Wong 83b283ebbe Filestorage: Replace the two server classes with a wrapper class 
Simplifies both the filestorage.js code as well as the starter.js code
that uses these FileStorage classes.

Now, the ServerFileStorageWrapper decorates the other FileStorage
classes by loading from the server when the file is not available.

Moreover, the previous starter.js was incorrectly passing the `baseurl`
parameter (it was passing it when baseurl was not defined nor needed).
 2020-08-30 19:37:15 -05:00
Ernest Wong 93d9f6923e Filestorage: Prevent overlapped reinitialization of IndexedDB 
Catches cases when IndexDBFileStorage#init is accidentally called in
multiple places.
 2020-08-30 19:37:15 -05:00
Ernest Wong a85dd50169 Filestorage: Improve assert coverage and robustness 
Checks that sha256sum is also not undefrined nor null.
Avoids ReferenceError when window is not defined e.g. on NodeJS.
 2020-08-30 19:37:15 -05:00
Ernest Wong c2dcb440dd Filestorage: Refactor fallback and load-from-server 
Fallback logic is moved to the caller's responsibility.

Empty FileStorages and FileStorages that load from the server are
separated into different classes. This is to avoid faults where the
caller of the constructor forgets to pass in a `baseurl` parameter and
leads to some confusing bug.
 2020-08-30 19:37:15 -05:00
Ernest Wong 6a06a7108a Tidy: file_storage snake case and interface naming convention 2020-08-30 19:37:15 -05:00
Fabian 88f482fae0 Commit temporary workaround 2020-08-30 19:37:15 -05:00
Fabian 608559fa94 Call hlt_loop immediately on an hlt instruction 2020-08-30 19:37:15 -05:00
Fabian 01697a7ebb Delete some dead code 2020-08-30 19:37:15 -05:00
Fabian 2233b069b3 Mark Bitmap as constructor 2020-08-30 19:37:15 -05:00
Fabian 7720f9a8e6 Print opcode on unimplemented sse instructions 2020-08-30 19:37:15 -05:00
Fabian 400673646f Remove unused constants 2020-08-30 19:37:15 -05:00
Fabian 58b8c49fb0 Pack memory in state image, reduces memory use during state loading 2020-08-30 19:37:15 -05:00
Fabian 32606a26ac rtc: Implement alarm interrupt 2020-08-30 19:37:15 -05:00
Amaan Cheval 3eb15d328d cpu: Update iret for minor fixes from manual 
Citations for these changes:

  https://imgur.com/a/QgNekKL
 2020-08-30 19:37:15 -05:00
Amaan Cheval 1d5e0052b4 cpu: Port iret, iret16, iret32 to Rust 2020-08-30 19:37:15 -05:00
Amaan Cheval 8aa06b54e0 cpu: Port switch_cs_real_mode to Rust 2020-08-30 19:37:15 -05:00
Fabian e5fbbd0f2d Implement json loading for nodejs 2020-08-30 19:37:15 -05:00
Fabian d2f86799e9 Simplify load_from_json: Accept json object directly, don't run asynchronously 2020-08-30 19:37:14 -05:00
Fabian f7c22266c9 initrd/bzimage detection: Ignore case 2020-08-30 19:37:14 -05:00
Fabian 028e131ddb Rename OnJSONLoaded & small refactor 2020-08-30 19:37:14 -05:00
Fabian aea2409b1d Ignore filesystem base when state image is provided 2020-08-30 19:37:14 -05:00
Fabian af0f153640 Refactor using new filesystem function 2020-08-30 19:37:14 -05:00
Fabian 3f79814e05 Detect initrd/bzimage in 9p filesystem and load before boot 2020-08-30 19:37:14 -05:00
Fabian e94c30ef6f Don't wrap text in SyncBuffer 2020-08-30 19:37:14 -05:00
Fabian 9ffbba7bcd Use bzimage loader for debian-full, remove ugly build script for the 9p boot hard drive image 2020-08-30 19:37:14 -05:00
Fabian e1c6116a0f Implement Linux kernel boot protocol, accept bzimage/initrd as boot configuration 2020-08-30 19:37:14 -05:00
Fabian 04d282c298 Firmware port: Pretend to be qemu, implement all indexes used by seabios 2020-08-30 19:37:14 -05:00
Fabian 753fcb25c7 Simplify multiboot buffer during init 2020-08-30 19:37:14 -05:00
Fabian 8d6baff91c Fix rustfmt 2020-08-30 19:29:54 -05:00
Fabian cb0ca91f58 Resolve some internal imports directly 2020-08-30 19:29:54 -05:00
Fabian 57b51d440d nodejs: Prefer perf_hooks module over custom shim for performance.now 2020-08-30 19:29:54 -05:00
Fabian 53bd41614f Fix minor problem with Rust port of call_interrupt_vector 2020-08-30 19:29:54 -05:00
Fabian 7796d9dcb4 Clean up wasm loading, remove unused code for emscripten 2020-08-30 19:29:54 -05:00
Fabian 5bcee471ca Remove old C code 2020-08-30 19:29:54 -05:00
Fabian b83ed1b7c1 Minor 2020-08-30 19:29:54 -05:00
Fabian fbdb4a28ea Remove all uses of "for in" 2020-08-30 19:29:54 -05:00
Fabian a39d58d4e5 ne2k: Fix transfer of empty packet and start page after wrap-around 2020-08-30 19:29:54 -05:00
Fabian 28a6f1a84a Add pit.dump 2020-08-30 19:29:54 -05:00
Fabian efea556a10 Implement NetworkAdapter.change_proxy 2020-08-30 19:29:54 -05:00
Ernest Wong 6fe226eec9 Filestorage: Reuse write-to-indexeddb logic 2020-08-30 19:29:54 -05:00
Ernest Wong 27a825dce3 Filestorage: Preserve key names when writing into indexeddb 2020-08-30 19:29:54 -05:00
Ernest Wong a0c984dc8d Filesystem: Introduce IndexedDBFileStorage 
Uses MemoryFileStorage as a fallback when:
- v86 is used in a browserless environment, e.g. NodeJS
- browser doesn't support indexedDB
- opening indexedDB fails
- existing database is a newer version
- existing database is an old version and is under use - blocking
current v86 instance to connect to it.
 2020-08-30 19:29:54 -05:00
Ernest Wong 0a67e3532f Filesystem: Introduce FileStorage class for server-loaded files 2020-08-30 19:29:54 -05:00
Ernest Wong 595d6dca55 Filesystem: Refactor inodedata accesses to async methods 
The "// jshint ignore:line" comments are pretty messy, so squint your eyes.
They're systematically placed, so we can regex it out when jshint's
new version finally arrives.

Using async/await instead of callbacks due to callback hell, and it also
helps minimising the diff)
 2020-08-30 19:29:54 -05:00
Amaan Cheval b6b55e5644 cpu: Refactor get_tss_stack_addr to simplify things 2020-08-30 19:29:54 -05:00
Amaan Cheval 0bf4e4faf6 cpu: Port get_tss_stack_addr to Rust 2020-08-30 19:29:54 -05:00
Amaan Cheval de8411f184 Minor: Inline has_error_code 2020-08-30 19:29:54 -05:00
Amaan Cheval 3b94c5f9d3 cpu: Refactor to use error_code: Option<i32> for call_interrupt_vector 2020-08-30 19:29:54 -05:00
Amaan Cheval ce090cfb4e cpu: Inline into InterruptDescriptor and clean call_interrupt_vector 2020-08-30 19:29:54 -05:00
Amaan Cheval f7f0f64f84 cpu: Use of_<T> functions to init descriptor and selector structs 2020-08-30 19:29:54 -05:00
Amaan Cheval ae70cb7e4f cpu: Minor refactor in call_interrupt_vector 2020-08-30 19:29:54 -05:00
Amaan Cheval 8ba3de34c1 cpu: Check for reserved zeros in interrupt descriptor 
This lets us make our gate type validity check more readable
 2020-08-30 19:29:54 -05:00
Amaan Cheval aa789d4129 cpu: Follow call_interrupt_vector's specification more closely 2020-08-30 19:29:54 -05:00
Amaan Cheval 4ef09445e1 cpu: Port call_interrupt_vector to Rust 2020-08-30 19:29:54 -05:00
Fabian 48e6843a87 Remove S_ prefix from profiler 2020-08-30 19:29:54 -05:00
Fabian 5b2aa69777 Use CachedStateFlags type in former C code 2020-08-30 19:29:54 -05:00
Fabian 18b2a0883a Remove same_page, use Page::page_of 2020-08-30 19:29:54 -05:00
Fabian 0798a0b40e Don't create unnecessary entry points 
This commit prevents creation of entry points for jumps within the same
page. In interpreted mode, execution is continued on these kinds of
jumps.

Since this prevents the old hotness detection from working efficiently,
hotness detection has also been changed to work based on instruction
counters, and is such more precise (longer basic blocks are compiled
earlier).

This also breaks the old detection loop safety mechanism and causes
Linux to sometimes loop forever on "calibrating delay loop", so
JIT_ALWAYS_USE_LOOP_SAFETY has been set to 1.
 2020-08-30 19:29:54 -05:00
Fabian afcce9b371 Record compiled instructions per opcode 2020-08-30 19:29:54 -05:00
Fabian 7e1d398e05 Track last executed jump instruction, check for missed entry points while looking for compiled code 2020-08-30 19:29:54 -05:00
Fabian 7e3f1ad401 gen_fn: Accept wasm builder, not jit context 2020-08-30 19:29:54 -05:00
Fabian 8447b6bb83 Fix prefixes in jitted code: Reset after exception 2020-08-30 19:29:54 -05:00
Fabian 5eaece7743 jit memory moves with immediate address (A0/A1/A2/A3) 2020-08-30 19:29:54 -05:00
Fabian 3f9b32cdd8 Improve stats for run_interpreted 2020-08-30 19:29:54 -05:00
Fabian 8de547455e jit memory access for imul 2020-08-30 19:29:54 -05:00
Fabian b0f3fd88c4 report_safe_{read,write}_jit_slow: not_user can happen (it just doesn't happen very often) 2020-08-30 19:29:54 -05:00
Fabian 6a2cd6419d jit memory access for 8-bit read-modify-write operations with immediate 2020-08-30 19:29:54 -05:00
Fabian 2635ed71b4 jit memory access for 8-bit read-modify-write operations 2020-08-30 19:29:54 -05:00
Fabian b98ff1612a Make profiler stat counters u64 2020-08-30 19:29:54 -05:00
Fabian 014e745810 Clean up dead code from old exceptions 2020-08-30 19:29:54 -05:00
Fabian 7d0521475a Store fxsave_store_fpu_mask in state 2020-08-30 19:29:54 -05:00
Fabian 32699a3a7e Clear unused wasm modules earlier 2020-08-30 19:29:54 -05:00
Fabian c08a99c591 c2rust cleanup: Fix boolean literals 2020-08-30 19:29:54 -05:00
Fabian cb1348fdc7 c2rust cleanup: Restore hex constants 2020-08-30 19:29:54 -05:00
Fabian 435608d9f0 c2rust cleanup: Remove unused mut 2020-08-30 19:29:54 -05:00
Fabian 05ca01c7de c2rust cleanup: Remove casts on numeric literals 2020-08-30 19:29:54 -05:00
Fabian d895985e83 c2rust cleanup: Turn while loops into for loops 2020-08-30 19:29:54 -05:00
Fabian 13f4a33231 task_switch_test_mmx: Fix order of checks 2020-08-30 19:29:54 -05:00
Fabian 7620a7cb84 fpu: Refactor (de-)serialisation of f32/f64/f80, add tests for denormals and nans 2020-08-30 19:29:54 -05:00
Fabian 96b703f87c Keep track of whether fpu or mmx register has been written recently, store proper register in fx?save 2020-08-30 19:29:54 -05:00
Fabian 818cece40d Transition from fpu mode on mmx operations 2020-08-30 19:29:54 -05:00
Fabian e70e9dc4b2 Factor the conversion out of fpu_{load,store}_m80, add tests, fix the denormal number case 2020-08-30 19:29:54 -05:00
Fabian aa9d5deefc Warn on task_switch_test with cr4.osfxsr=0 2020-08-30 19:29:54 -05:00
Fabian 1de206da49 Minor: Print cr4 as hex 2020-08-30 19:29:54 -05:00
Fabian 35cd746940 Delete dead code 2020-08-30 19:29:54 -05:00
Fabian 585f720567 Fix sse shifts (shift operand is 64 bit) 2020-08-30 19:29:54 -05:00
Fabian d37c8295aa jit: Mask shifts and rotates to 5 bits 2020-08-30 19:29:54 -05:00
Amaan Cheval 68c9fb111c cleanup: Remove unneeded TODO comments and whitespace 2020-08-30 19:29:54 -05:00
Amaan Cheval 96ef38e901 cpu: Port popa{16,32} to Rust 2020-08-30 19:29:54 -05:00
Amaan Cheval 56ec3be5a4 cpu: Port update_cs_size to Rust 
The JS version needs to stay too since it can be called by other JS-only functions.
 2020-08-30 19:29:54 -05:00
Amaan Cheval 1712d25725 cpu: Port set_cr0 to Rust 2020-08-30 19:29:54 -05:00
Amaan Cheval b4922dc3b1 cpu: Port cpl_changed to Rust 
We leave the JS version too, since it's used by several other JS functions
that we aren't porting yet.
 2020-08-30 19:29:54 -05:00
Amaan Cheval a9bb4619ef cpu: Expand return_on_pagefault macro for cleanup 2020-08-30 19:29:54 -05:00
Amaan Cheval 8e7061eff5 cpu: Port test_privileges_for_io to Rust 2020-08-30 19:29:54 -05:00
Amaan Cheval 3c3c07079f cleanup: Use tuples and destructuring for more Rustic code 2020-08-30 19:29:54 -05:00
Amaan Cheval a209e00523 cleanup: Use methods instead of parsing props for SegmentDescriptor 2020-08-30 19:29:54 -05:00
Amaan Cheval e4ff8faff0 cleanup: s/get_// for method names of SegmentDescriptor 2020-08-30 19:29:54 -05:00
Amaan Cheval a6e863d3c6 cleanup: Rename SegmentDescriptor's type_attr to access_byte 2020-08-30 19:29:54 -05:00
Amaan Cheval a8420a6ee1 cleanup: Use methods instead of parsing/storing props for SegmentSelector 2020-08-30 19:29:54 -05:00
Amaan Cheval e7741c74ca cleanup: Make SelectorNullOrInvalid an enum 2020-08-30 19:29:54 -05:00
Amaan Cheval 6cc262bdba cleanup: Use OrPageFault type alias for clarity 2020-08-30 19:29:54 -05:00
Amaan Cheval 8f24d9464b cpu: Clean Rust lookup_segment_selector/switch_seg using early-exits 2020-08-30 19:29:54 -05:00
Amaan Cheval 880aa5e2d1 cpu: Port lookup_segment_selector and switch_seg to Rust 
We'll keep the JS versions too, since the Rust and JS versions are incompatible, but both are needed
in their own respect.
 2020-08-30 19:29:54 -05:00
Amaan Cheval 3471663d84 Add default profile for Debian (using debian-full Docker image) 2020-08-30 19:29:54 -05:00
Fabian 83febd1376 Remove duplicated constants (TLB_*) 2020-08-30 19:29:54 -05:00
Fabian bf895ff1b2 profiler: Keep track of fast/slow path for jitted memory access 2020-08-30 19:29:54 -05:00
Fabian b70a5c081a Allow fast path for memory reads from pages that contain code 2020-08-30 19:29:54 -05:00
Fabian fcdda9487e handle_irqs: Do interrupt flag check from Rust 2020-08-30 19:29:54 -05:00
Fabian 36a46bca80 Remove non-faulting stat 2020-08-30 19:29:54 -05:00
Fabian 22ba923f9a Track number of module invalidations 2020-08-30 19:29:54 -05:00
Fabian 3cb7f7a0b4 Clean up casts of physical and virtual addresses 2020-08-30 19:29:54 -05:00
Fabian 8919079209 Print current state of has_flat_segmentation 2020-08-30 19:29:54 -05:00
Fabian 62dd6be561 Track missed entry points 2020-08-30 19:29:54 -05:00
Fabian 37c8459392 Clean up c2rust-generated profiler 2020-08-30 19:29:54 -05:00
Awal Garg 54151e2306 jit 0x0FBF 2020-08-30 19:29:54 -05:00
Awal Garg 0377e95c42 jit 0x0FB7 2020-08-30 19:29:54 -05:00
Ernest Wong c3739fc22a 9p: Disable filename tracking by default 2020-08-30 19:29:54 -05:00
Fabian 1980a96093 popf: Warn on trap flag 2020-08-30 19:29:54 -05:00
Fabian beaa54feda popf: Call handle_irqs only if interrupt flag is set from 0 to 1 2020-08-30 19:29:54 -05:00
Fabian 295985e8e0 Remove code section: Only a single buffer is used for generating code 2020-08-30 19:29:54 -05:00
Fabian 41b60d278c Accept builder in gen_jmp_rel16, simplifying 2020-08-30 19:29:54 -05:00
Fabian d691b311a2 Simplify some code 2020-08-30 19:29:54 -05:00
Fabian 46f9bc9d00 Remove non-faulting property of instructions (all instructions are non-faulting) 2020-08-30 19:29:54 -05:00
Fabian fa958d95c3 Fix warnings: Remove unused stuff 2020-08-30 19:29:54 -05:00
Fabian 841b528a04 Remove jit_dirty_cache_single in favour of jit_dirty_page 2020-08-30 19:29:54 -05:00
Fabian 456c4cbe65 mxcsr: Print warning only when bit is flipped & use constants 2020-08-30 19:29:54 -05:00
Fabian 26e6452c2c Fix mxcsr warning 2020-08-30 19:29:54 -05:00
Fabian 419ddf765a Remove some functions when profiler is disabled 2020-08-30 19:29:54 -05:00
Fabian d24972e3b5 {movs,stos}{b,d}: Call jit_dirty_cache once per page 2020-08-30 19:29:54 -05:00
Fabian f182923bbd Page table accessed/dirty bits: Only write if necessary 2020-08-30 19:29:54 -05:00
Fabian 0a50a8474e c2rust cleanup: Remove unnecessary suffixes on numbers 2020-08-30 19:29:54 -05:00
Fabian b5ed5f7c5b c2rust cleanup: Remove -> () 2020-08-30 19:29:54 -05:00
Fabian cb80830881 c2rust cleanup: Enable mutable_transmutes warnings 2020-08-30 19:29:54 -05:00
Fabian 6b8bf885a2 c2rust cleanup: Enable unused_assignments and unused_variables warnings and fix them 2020-08-30 19:29:54 -05:00
Fabian fc0fd368c4 c2rust cleanup: Enable unused_unsafe warning and a few warnings 2020-08-30 19:29:54 -05:00
Fabian 015232f466 c2rust cleanup: Remove .offset(0) 2020-08-30 19:29:54 -05:00
Fabian 44bc613af3 c2rust cleanup: Remove dbg_log_c 2020-08-30 19:29:54 -05:00
Fabian ef796d7f62 c2rust cleanup: Remove fresh variables 2020-08-30 19:29:54 -05:00
Fabian 3a00eedf21 c2rust cleanup: Re-enable some warnings 2020-08-30 19:29:54 -05:00
Fabian 652c4f4322 c2rust cleanup: Remove old makefile 2020-08-30 19:29:54 -05:00
Fabian d08f5fd460 c2rust cleanup: Fix comments 2020-08-30 19:29:54 -05:00
Fabian 36fede1906 Simplify fpu_set_tag_word 2020-08-30 19:29:54 -05:00
Fabian 2b27510198 sse: Warn on unimplemented mxcsr features 2020-08-30 19:29:54 -05:00
Fabian 221e5489b4 sse: Clean up old cvt instruction 2020-08-30 19:29:54 -05:00
Fabian d63c956a89 sse: Implement 0F5A/0F5B/CVTT?[SPD][SDQ]2[SPD][SDQ] (#57) 2020-08-30 19:29:54 -05:00
Fabian 8ab707dbc2 sse: Implement 0FE6/CVTPD2DQ/CVTTPD2DQ/CVTDQ2PD (#57) 2020-08-30 19:29:54 -05:00
Fabian 3ea0089878 sse: Implement 0F2C/0F2D/CVTT[PS][SD]2[SP]I (#57) 2020-08-30 19:29:54 -05:00
Fabian 9665dbf994 sse: Implement 0F2E/0F2F/u?comis[sd] (#57) 2020-08-30 19:29:54 -05:00
Fabian 8dc066f73d sse: Expand sse3 instruction 2020-08-30 19:29:54 -05:00
Fabian cc507db69b sse: Implement 0FC6/shufp[sd] (#57) 2020-08-30 19:29:54 -05:00
Fabian 9e902eb1dc sse: Implement 0F52/rcpps (#57) 2020-08-30 19:29:54 -05:00
Fabian 5dd26ead30 Generate code for memory instructions (0F4*, 0F9*, 0FAF: cmovcc, setcc, imul) 2020-08-30 19:29:54 -05:00
Fabian de01a4b265 Generate code for memory instructions (F6/F7/FF_{0,1}: test/inc/dec) 2020-08-30 19:29:54 -05:00
Fabian fa50294b47 Generate code for read-modify-write instructions (C1/D1/D3: Shifts and rotates) 2020-08-30 19:29:54 -05:00
Fabian 33f781e3ba Set DEBUG to false for release build 2020-08-30 19:29:54 -05:00
Fabian 38a84342a2 Give Rust more indirect function slots and clean up the code 2020-08-30 19:29:54 -05:00
Fabian 3bb3e21962 mxcsr: Warn on 'Denormals Are Zero' 2020-08-30 19:29:54 -05:00
Fabian b51c6e7c78 imul_reg16: Do sign extension in function 2020-08-30 19:29:54 -05:00
Fabian 8460d9e1e4 Clean up 2020-08-30 19:29:54 -05:00
Fabian 3706bcac12 Use jit for read-modify-write arithmetic instructions 2020-08-30 19:29:54 -05:00
Fabian 0cf700edee Use cargo features to toggle profiler 2020-08-30 19:29:54 -05:00
Fabian 0680c1a2c4 fpu: Fix out of bounds memory access 2020-08-30 19:29:54 -05:00
Fabian cfb9cd8abe Partial custom implementation for arithmethic instructions with read-memory 2020-08-30 19:29:54 -05:00
Fabian 9de2b926a7 Custom implementations for test instruction (only wrapper) 2020-08-30 19:29:54 -05:00
Fabian 9164e0a48f Custom implementation for 'mov r/m, imm' 2020-08-30 19:29:54 -05:00
Fabian 1d24c5952d Cleanup of codegen api 2020-08-30 19:29:54 -05:00
Fabian ca36680d52 PAGE_FAULT is u8 2020-08-30 19:29:54 -05:00
Fabian b0eff6b951 Implement 8-bit memory accesses 2020-08-30 19:29:54 -05:00
Fabian 71524d1d2c Use gen_jmp_rel16 for generating jumps in 16-bit mode 2020-08-30 19:29:54 -05:00
Fabian fbd5e136e1 Temporarily increase JIT_THRESHOLD to account for marking a lot of instructions as block boundary 2020-08-30 19:29:54 -05:00
Fabian 3c903338c3 c2rust cleanup: Call more functions directly 2020-08-30 19:29:54 -05:00
Fabian 75eecd0d63 Multiboot loader: Skip sections outside of memory 2020-08-30 19:29:54 -05:00
Fabian d4d7d236d5 Make all instructions non-faulting; handle faulting case in gen_safe_{read,write} (#44) 2020-08-30 19:29:54 -05:00
Fabian 60d4a28e2c jit: Custom instructions can be block boundaries 2020-08-30 19:29:54 -05:00
Fabian dc37bac547 Analysis: Never emit empty basic blocks, track last instruction of basic block 2020-08-30 19:29:54 -05:00
Fabian 92a2ffd4a9 Use .count_ones() over manual implementation for popcnt 2020-08-30 19:29:53 -05:00
Fabian cd8e47a5c5 Improve hook handler: Print more information 2020-08-30 19:29:53 -05:00
Fabian c8b3d5a618 Add more information to .expect 2020-08-30 19:29:53 -05:00
Fabian d9282afec5 Force logging of panic messages 2020-08-30 19:29:53 -05:00
Fabian 8051db8ac6 Access from allocated memory 2020-08-30 19:29:53 -05:00
Fabian 1a96072840 Use u8 for page_fault 2020-08-30 19:29:53 -05:00
Fabian 9c9fc4e0e7 Check imports 2020-08-30 19:29:53 -05:00
Fabian 1b9ad3ac60 Remove useless #[no_mangle] 2020-08-30 19:29:53 -05:00
Fabian ee3a3d4fe2 Fix statics and constants 2020-08-30 19:29:53 -05:00
Fabian a2b2a7c5ae Clean up profiler and static array 2020-08-30 19:29:53 -05:00
Fabian ebf9cb1750 Remove extern from functions 2020-08-30 19:29:53 -05:00
Fabian c489463c83 rust2c cleanup: Fix warnings 2020-08-30 19:29:53 -05:00
Fabian a795accee6 c2rust cleanup: Make global pointers constants 2020-08-30 19:29:53 -05:00
Fabian 4b34beeb79 c2rust cleanup: Use Rust imports instead of linking 2020-08-30 19:29:53 -05:00
Fabian fbe14a3d98 Disable safe_{read,write} fast path profiling 2020-08-30 19:29:53 -05:00
Fabian a5cbf53da5 Fix jit in presence of new page fault handling 
Makes the following a block boundary:

- push
- Any non-custom instruction that uses modrm encoding
- Any sse/fpu instruction

This commit affects performance negatively. In order to fix this, the
above instructions need to be implemented using custom code generators
for the memory access.
 2020-08-30 19:29:53 -05:00
Fabian 2c47c85325 Fix format strings 2020-08-30 19:29:53 -05:00
Fabian 25949fff70 Handle page faults in instructions using return_on_pagefault and writable_or_pagefault 2020-08-30 19:29:53 -05:00
Fabian a88420910d Handle pagefaults without JS exceptions 
This commit makes the return type of most basic memory access primitives
Result, where the Err(()) case means a page fault happened, the
instruction should be aborted and execution should continue at the page
fault handler.

The following primites have a Result return type: safe_{read,write}*,
translate_address_*, read_imm*, writable_or_pagefault, get_phys_eip,
modrm_resolve, push*, pop*.

Any instruction needs to handle the page fault cases and abort
execution appropriately. The return_on_pagefault! macro has been
provided to get the same behaviour as the previously used JS exceptions
(local to the function).

Calls from JavaScript abort on a pagefault, except for
writable_or_pagefault, which returns a boolean. JS needs to check
before calling any function that may pagefault.

This commit does not yet pervasively apply return_on_pagefault!, this
will be added in the next commit.

Jitted code does not yet properly handle the new form of page faults,
this will be added in a later commit.
 2020-08-30 19:29:53 -05:00
Fabian 11ee22176d Temporarily disable jit 2020-08-30 19:29:53 -05:00
Fabian 0a68bc9393 Check in generated Rust files 2020-08-30 19:29:53 -05:00
Fabian 48a8b74f20 Restore assertions 2020-08-30 19:29:53 -05:00
Fabian 46f30ea7bc Preserve most comments 2020-08-30 19:29:53 -05:00
Fabian 07851e90ab Clean up strings 2020-08-30 19:29:53 -05:00
Fabian 32322e5dc5 Restore code that was lost by c2rust 2020-08-30 19:29:53 -05:00
Fabian 67247ec907 (partially) fix variadic dbg_log 2020-08-30 19:29:53 -05:00
Fabian 5a874933df Clean up integer/float types 2020-08-30 19:29:53 -05:00
Fabian a832a74a36 Fix profiler 2020-08-30 19:29:53 -05:00
Fabian d07cc4f7fa Fix state images 2020-08-30 19:29:53 -05:00
Fabian 1faf8ccc86 Allocate memory via Rust instead of ahead-of-time 2020-08-30 19:29:53 -05:00
Fabian 952b8cf723 Quote for Closure Compiler and add missing functions for non-optimised builds 2020-08-30 19:29:53 -05:00
Fabian 05d0079015 Use Proxy over getters for memory views (works in compiled mode) 2020-08-30 19:29:53 -05:00
Fabian 01061dc4b6 The final Rust porting 
This commit contains the final changes requires for porting all C code
to Rust and from emscripten to llvm:

- tools/wasm-patch-indirect-function-table.js: A script that rewrites
  the wasm generated by llvm to remove the table limit
- tools/rust-lld-wrapper: A wrapper around rust-lld that removes
  arguments forced by rustc that break compilation for us
- src/rust/cpu2/Makefile: A monstrosity to postprocess c2rust's output
- gen/generate_interpreter.js: Ported to produce Rust instead of C
- src/rust/*: A few functions and macros to connect the old Rust code
  and the new Rust code
- src/*.js: Removes the loading of the old emscripten wasm module and
  adapts imports and exports from emscripten to llvm
 2020-08-30 19:29:53 -05:00
Fabian 6de0bb374b Preparation C code for c2rust conversion 2020-08-30 19:29:53 -05:00
Awal Garg 26fc44a61f simplify push16,32 2020-08-30 19:29:53 -05:00
Awal Garg bfc04b80fb jit E8 2020-08-30 19:29:53 -05:00
Awal Garg 4d7f87c515 avoid local in gen_safe_read_write 2020-08-30 19:29:53 -05:00
Awal Garg b6aa8efc37 merge push16_ss* and push32_ss* functions 2020-08-30 19:29:53 -05:00
Awal Garg 2f5b1311c6 re-add gen_safe_read_write 2020-08-30 19:29:53 -05:00
Awal Garg fb9a6e714a remove unused codegen functions (register related) 2020-08-30 19:29:53 -05:00
Awal Garg 73cbea7d0f call gen_pop{16,32} instead of using interpreted variants, update expect 
tests
 2020-08-30 19:29:53 -05:00
Awal Garg be7d21e79f add gen_push32_ss{16,32} 2020-08-30 19:29:53 -05:00
Awal Garg 5c2ab56b3b add gen_push16_ss{16,32} 
This adds the ImmVal enum type too.
 2020-08-30 19:29:53 -05:00
Ernest Wong e29e1ef9f4 Handle unexpected errors from fs.Mount and fix V86Starter error handling. 2020-08-30 19:29:53 -05:00
Ernest Wong e683e812fd Mount only onto non-existent paths, existent parent 
If mountpoint already exists, then we're silently making its children
inaccessible which may not be what we expected/intended.

Create a new forwarder inode upon mounting.
 2020-08-30 19:29:53 -05:00
Ernest Wong 23080e2731 Isolate filesystem qid counting to each v86 instance 2020-08-30 19:29:53 -05:00
Ernest Wong 070c38c6a1 Add tests for host-side fs mounting 
The testing "framework" code is slowly turning into spaghetti due to the
asynchronous nature of the triggers. Using async functions will help
clarify the program flow if we think we should address this issue.
 2020-08-30 19:29:53 -05:00
Ernest Wong 9e592dbd84 Decouple 9p and starter from fs's internal structure 
Part of changes to support fs mounting on the host side.
Inode attributes are generally left untouched as field accesses.
 2020-08-30 19:29:53 -05:00
Fabian 5b5a36d258 Fix rustfmt after upgrade 2020-08-30 19:29:53 -05:00
Fabian 551f5d1a1f When HLT is executed, check for new interrupts immediately and don't leave the main loop if execution can continue 2020-08-30 19:29:53 -05:00
Fabian ea6e7daee5 Avoid use of raising cpu exceptoins for HLT 2020-08-30 19:29:53 -05:00
Fabian 09072feee3 Warn when restoring memory of incorrect size 2020-08-30 19:29:53 -05:00
Fabian 8998bab05c Lazy-load wabt/capstone on node 2020-08-30 19:29:53 -05:00
Fabian 33b0084aa5 Stats for global/non-global tlb entries 2020-08-30 19:29:53 -05:00
Fabian 33acb48fb9 Implement cvtsd2si (#57) 2020-08-30 19:29:53 -05:00
Fabian 6fa702c8aa Implement {min,max,div}{p,s}{s,d} sse instructions (#57) 2020-08-30 19:29:53 -05:00
Fabian c10bbca85e Add sqrt{p,s}{d,s} instructions (#57) 2020-08-30 19:29:53 -05:00
Fabian 70ae4b720a Remove use of raising cpu exceptions for trigger_ud 2020-08-30 19:29:53 -05:00