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Author SHA1 Message Date
Fabian 14fd138357 More precise stats for 32-bit addresses 2020-12-31 19:14:29 -06:00
Fabian 8f19c1d1dc Remove outdated comment 2020-12-31 19:14:29 -06:00
Fabian 3951e5f42b Use mIPS over kIPS \o/ 2020-12-31 19:14:29 -06:00
Fabian c0fd7051ee Robustness 2020-12-31 19:14:29 -06:00
Fabian b5def60fb4 Clean up 2020-12-31 19:14:29 -06:00
Fabian 2396a1b809 Add some sources for the OS images 2020-12-31 19:14:29 -06:00
Fabian 5f38f0ffcf Remover "Other host" 2020-12-31 19:14:29 -06:00
Fabian 6021ce80b0 images: Load external kolibri image even over https (server previously didn't support https) 2020-12-31 19:14:29 -06:00
Fabian b5b1cbf7da Simplify 2020-12-31 19:14:29 -06:00
Fabian c84a814610 Remove unused A20 stuff 2020-12-31 19:14:29 -06:00
Fabian d5c9b29942 Upgrade jshint 2020-12-31 19:14:29 -06:00
Fabian b7e5f28104 Fix rust warning 2020-12-31 19:14:29 -06:00
Fabian 48a9847d16 s/oxide// 2020-12-31 19:14:29 -06:00
Fabian c97301842e Put jit_cache_array and jit_page_first_entry into global state, reduces the size of the .wasm files by 8MB because for some reason the rust compiler decides to put them into the data section 2020-12-31 19:14:29 -06:00
Fabian 4bfd024366 Simplify gen_safe_read_write by removing fallback function 2020-12-31 19:14:29 -06:00
Fabian 697bd4c64d Disambiguate drop 2020-12-31 19:14:29 -06:00
Fabian 941208c948 Remove defunct test coverage 2020-12-31 19:14:29 -06:00
Fabian cd4977f517 Simplify 2020-12-31 19:14:29 -06:00
Fabian 33e608fa70 fix rust warning 2020-12-31 19:14:29 -06:00
Fabian 9efade88ee Fix compilation with latest closure compiler 2020-12-31 19:14:29 -06:00
Fabian 1665e9b358 Fix instruction counter wrap-around 2020-12-31 19:14:29 -06:00
Fabian 60adbf9b1f Fix: Side-effects in lsl/lar/arpl even when #ud is triggered 2020-12-31 19:14:29 -06:00
Fabian 9a38e6a654 nasmtests: Check exception eip 2020-12-31 19:14:29 -06:00
Fabian f058037006 Fix exception eip in #ud and #gp in jitted code 2020-12-31 19:14:29 -06:00
Fabian 6f366b1277 Refactor: Use gen_set_previous_eip_offset_from_eip_with_low_bits in gen_safe_read_write 2020-12-31 19:14:29 -06:00
Fabian 5515c32e8d Correct codegen for some undefined fpu instructions 2020-12-31 19:14:29 -06:00
Fabian 48940e426a Fix fldm80/fstenv/fldenv: These instructions were generating and unconditional exit from jitted code but not updating eip. Changed to use the fallback mechanism for handling pagefaults 2020-12-31 19:14:29 -06:00
Fabian 3f1ba044ed Increment timestamp_counter before running basic block 2020-12-31 19:14:29 -06:00
Fabian 85e846480f Assert that TSC changes so that do_many_cycles_native is guaranteed to make progress 2020-12-31 19:14:29 -06:00
Fabian 861aea3157 Add recording serial adapter 2020-12-31 19:14:29 -06:00
Fabian e2eecc7295 task_switch_test*_jit: assert that jit agrees 2020-12-31 19:14:29 -06:00
Fabian 492a2cf78e Update previous_ip only if page fault is going to happen 2020-12-31 19:14:29 -06:00
Fabian 0c922cea95 Add config::LOG_PAGE_FAULTS 2020-12-31 19:14:29 -06:00
Fabian cd0b6ce753 Fix off-by-on in assertion in write_blob/read_blob 2020-12-31 19:14:29 -06:00
Fabian 0d76a7e99a Correctly set previous_ip before #nm (fixes segfaults in Linux) 2020-12-31 19:14:29 -06:00
Fabian 4e9fa5e783 refactor 2020-12-31 19:14:29 -06:00
Fabian c47b4b252c Optimise cr0 access in task_switch_test (only low byte needed) 2020-12-31 19:14:29 -06:00
Fabian d2c01c31a3 Fix memory dumps 2020-12-31 19:14:29 -06:00
Fabian 5e73b6f21b Remove invalid assertion on sfence/mfence/lfence (low bits of modrm byte are ignored) 2020-12-31 19:14:29 -06:00
Fabian 1c474eabdb Fix mov [mem], sreg in 32-bit mode (should be 16-bit write) 2020-12-31 19:14:29 -06:00
Fabian 17f2488684 Fix uses of writable_or_pagefault from JS 2020-12-31 19:14:29 -06:00
Fabian c207400922 Fix Rust warnings 2020-12-31 19:14:29 -06:00
Fabian c97600f5cb Also prepare gen_safe_read{64,128} for later optimisations 2020-12-31 19:14:29 -06:00
Fabian b23c4a9db2 Optimise pop reg 2020-12-31 19:14:29 -06:00
Fabian c5cd93678e Pass local to gen_safe_read, add single function for modrm_resolve and gen_safe_read (preparation for later optimisations) 2020-12-31 19:14:29 -06:00
Fabian aad8072aa7 Optimise push reg 2020-12-31 19:14:28 -06:00
Fabian f620aceb5d Use LocalOrImmediate for other arithmetic instructions 2020-12-31 19:14:28 -06:00
Fabian 43fcdf9fc2 Introduce LocalOrImmediate for more efficient parameter passing to cmp/test instructions 2020-12-31 19:14:28 -06:00
Fabian 1fa0430cb5 Remove unused macro rules 2020-12-31 19:14:28 -06:00
Fabian bc3c73a607 wasm state machine: Fallthrough 2020-12-31 19:14:28 -06:00
Fabian 1278672998 Split modrm stat into reg_with_offset and complex 2020-12-31 19:14:28 -06:00
Fabian 1de8fe1888 Fix unnecessary push to stack 2020-12-31 19:14:28 -06:00
Fabian f98f423d1b Comment 2020-12-31 19:14:28 -06:00
Fabian 78ef12be68 Custom implementations for several sse instructions 
- mov dword/qword [mem], xmm
- mov xmm, dword/qword [mem]
- some arithmetic
 2020-12-31 19:14:28 -06:00
Fabian 4619d4dd6d Add info to assertion 2020-12-31 19:14:28 -06:00
Fabian 63afa77167 Global pointers: Align general purpose registers, sse registers and flags 2020-12-31 19:14:28 -06:00
Fabian e99da40215 Make std/cld custom (FC/FD), remove unused unguarded_register and no_register properties from x86 table 2020-12-31 19:14:28 -06:00
Fabian 0263764a5c Remove unused unguarded_register property during analysis 2020-12-31 19:14:28 -06:00
Fabian 0e8c8a1dda More opstats 2020-12-31 19:14:28 -06:00
Fabian d98e1b2f70 Generate code (instead of call) for 32-bit arithmetic operations 2020-12-31 19:14:28 -06:00
Fabian 970739f60b Generate custom code for getzf/getcf/test_be 2020-12-31 19:14:28 -06:00
Fabian e0473dae18 profiler: Count generated simple/complex modrm address expressions 2020-12-31 19:14:28 -06:00
Fabian 5da6cde13f Custom codegen for cbw/cwde/cwd/cdq/pushf/sahf (98/99/9C/9E) 2020-12-31 19:14:28 -06:00
Fabian 701d59e0dd Custom codegen for absolute cli (FA) 2020-12-31 19:14:28 -06:00
Fabian ff64866e25 Custom codegen for absolute cmpxchg (0FB1) 2020-12-31 19:14:28 -06:00
Fabian b5a72061fb Custom codegen for absolute jmp/call (FF_2/FF_4) 2020-12-31 19:14:28 -06:00
Fabian fb7e4d376a Custom codegen for lfence (0FAE_5) 2020-12-31 19:14:28 -06:00
Fabian b240a8fde9 Custom codegen for push sreg (06/0E/16/1E/0FA0/0FA8) 2020-12-31 19:14:28 -06:00
Fabian a9dac09ceb Custom codegen for xchg (91-98) 2020-12-31 19:14:28 -06:00
Fabian 091b2324d9 Custom codegen for 8C 2020-12-31 19:14:28 -06:00
Fabian c04ca292b9 Run latest rustfmt 2020-12-31 19:14:28 -06:00
Fabian 93ffd50969 Custom codegen for more sse move aliases (660F29/660F6F/F30F7F) 2020-08-30 19:37:15 -05:00
Fabian 75e5c2a56f Codegen for 8-bit shifts (D0/D2) 2020-08-30 19:37:15 -05:00
Fabian 815e5d338e Codegen more fpu instructions and run their tests (D9_6, DA_5) 2020-08-30 19:37:15 -05:00
Fabian fdd1dc377d Custom codegen for xadd (0FC1) 2020-08-30 19:37:15 -05:00
Fabian 874818866a Codegen for mul32 + custom mul/imul (F7_[45]) 2020-08-30 19:37:15 -05:00
Fabian 2a3e4bfa86 Minor: Remove unused 2020-08-30 19:37:15 -05:00
Fabian 1f74ee534c Simplify cmpxchg using SAFE_READ_WRITE macro 2020-08-30 19:37:15 -05:00
Fabian c086c710ad Stat: Count duplicate entries 2020-08-30 19:37:15 -05:00
Fabian 0d938fb3da Minor: Flatten pattern match 2020-08-30 19:37:15 -05:00
Fabian f22325ecf4 Minor: Use hex constant 2020-08-30 19:37:15 -05:00
Fabian b774db3f81 Fix: Clear prefixes when leaving instruction early 2020-08-30 19:37:15 -05:00
Fabian ac9ef7d447 gen_pop/gen_push: Avoid some unnecessary locals after registers-in-locals 2020-08-30 19:37:15 -05:00
Fabian ce10336747 Minor: Remove unused functions 2020-08-30 19:37:15 -05:00
Fabian 447307c27f Minor: Remove unnecessary parens 2020-08-30 19:37:15 -05:00
Fabian 7c4ed66c20 Cleanup: Rename trigger_gp_non_raising to trigger_gp 2020-08-30 19:37:15 -05:00
Fabian 158bb75fec FPU: Implement zero divide fault 2020-08-30 19:37:15 -05:00
Fabian 0269e9cecf Fix fxtract 2020-08-30 19:37:15 -05:00
Fabian 724090b319 Reduce code size by removing register restoring around safe_{read,write}*_jit 2020-08-30 19:37:15 -05:00
Fabian 723f78c14f Reduce code size by creating a block to jump to that handles the page fault case 2020-08-30 19:37:15 -05:00
Fabian 799171ba03 Refactor do_page_translation into do_page_walk which does the page walk without calling in case of a fault 2020-08-30 19:37:15 -05:00
Fabian 7024207fa4 Codegen for inc/dec (group 40-4F) 2020-08-30 19:37:15 -05:00
Fabian a8308b988d Store registers in locals 
This changes registers to be temporarily stored in wasm locals, across
each complete wasm module. Registers are moved from memory to locals
upon entering the wasm module and moved from locals to memory upon
leaving. Additionally, calls to functions that modify registers are
wrapped between moving registers to memory before and moving back to
locals after. This affects:

1. All non-custom instructions
2. safe_{read,write}_slow, since it may page fault (the slow path of all memory accesses)
3. task_switch_test* and trigger_ud
4. All block boundaries
5. The fallback functions of gen_safe_read_write (read-modify-write memory accesses)

The performance benefits are currently mostly eaten up by 1. and 4. (if
one calculates the total number of read/writes to registers in memory,
they are higher after this patch, as each instructions of typ 1. or 4.
requires moving all 8 register twice). This can be improved later by the
relatively mechanical work of making instructions custom (not
necessarily full code generation, only the part of the instruction where
registers are accessed). Multi-page wasm module generation will
significantly reduce the number of type 4. instructions.

Due to 2., the overall code size has significantly increased. This case
(the slow path of memory access) is often generated but rarely executed.
These moves can be removed in a later patch by a different scheme for
safe_{read,write}_slow, which has been left out of this patch for
simplicity of reviewing.

This also simplifies our code generation for storing registers, as

    instructions_body.const_i32(register_offset);
    // some computations ...
    instruction_body.store_i32();

turns into:

    // some computations ...
    write_register(register_index);

I.e., a prefix is not necessary anymore as locals are indexed directly.

Further patches will allow getting rid of some temporary locals, as
registers now can be used directly.
 2020-08-30 19:37:15 -05:00
Fabian 56dc1af7cc Split SAFE_WRITE stat into WRITE and READ_WRITE 2020-08-30 19:37:15 -05:00
Fabian 8838e263c3 Profiler: Track number of page faults and wasm bytes generated 2020-08-30 19:37:15 -05:00
Fabian ed5ecda0ae Custom implementation for pop [mem] (preparation for registers-in-locals) 2020-08-30 19:37:15 -05:00
Fabian 730919e317 Use gen_trigger_ud for invalid LEA encodings 2020-08-30 19:37:15 -05:00
Fabian f5540d9edf Use pop16_reg_jit for pop esp 2020-08-30 19:37:15 -05:00
Fabian 32f988a08d Pass JitContext to gen_get_reg* (preparation for registers-in-locals) 2020-08-30 19:37:15 -05:00
Fabian 4d35564761 Simplify get_seg: Generate code inline, avoid importing it in every module 2020-08-30 19:37:15 -05:00