WASM Execution Pipeline, File Dispatch & Supporting Infrastructure #52
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Reference: Spexeah/Asuro#52
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feature/wasm→developWASM Execution Pipeline, File Dispatch & Supporting Infrastructure
Adds end-to-end WebAssembly program execution to Asuro, from build-chain integration through to runtime I/O and cleanup, along with several supporting subsystems.
New: Wasuro WASM Runtime Integration
.o) and links it into the kernel.wasmrunner.pas(283 lines) - Loads.wasmfiles from VFS, instantiates modules via Wasuro, and launches them as kernel processes with dedicated stdout/stderr buffers.wasmshim.pas(44 lines) - Pascal-side declarations for the Wasuro C API (wasm_decode,wasm_instantiate,wasm_call, etc.).wasmio.pas(246 lines) - Host-imported I/O functions exposed to WASM guests (fd_write,fd_read,proc_exit,args_sizes_get,environ_sizes_get, etc.).wasmcleanup.pas(290 lines) - Post-execution teardown: frees WASM module memory, linear memory, function tables, and all associated allocations.New: File Dispatch System
filedispatch.pas(178 lines) - Magic-byte-based file type dispatcher. Opens a file, reads header bytes, matches against registered handlers (e.g.\0asm→ WASM runner), and launches the appropriate program. Registered as the terminal's fallback command handler.New: RAM Drive
ramdrive.pas(286 lines) - In-memory VFS volume mounted at/disk/ram. Files stored as (name, pointer, size) tuples. ImplementsTFilesystemhooks (readCallback,readDirCallback,readOffsetCallback,identifyCallback). IncludesstoreFile/storeFileCopy/removeFileAPI and auto-loads WASM builtins from FAT32 at boot.Modified: VFS (
vfs.pas)OpenFile/ReadFile/CloseFilethat works with volume-backed paths (removed oldLockparameter).PathValidfix -otDRIVEnodes now correctly identify individual files by splitting the path into parent + leaf, listing the parent viareadDirCallback, and checking each entry's type. Previously could only returnpvDirectoryorpvInvalid.Modified: Desktop (desktop.pas)
array[0..MAX_PROGRAMS-1]to dynamicPLinkedListBasewith lazy init.prog_count := 0frominit- programs registered beforedesktop.init(notepad, diskutil, etc.) are no longer wiped.Modified: System Unit (
system.pas)memcpy,memset,memmoveand various integer/pointer conversion helpers required by the Wasuro C runtime when linked into the Pascal kernel.Modified: Virtual Terminal (
vterminal.pas)filedispatch.dispatchFile.Other
progmanager.pas- Cleaned up duplicate uses clauses; removed invalidkernel.bsodregistration; registers WASM builtins and file dispatch.kernel.pas- Addedramdrive.initandfiledispatch.initto boot sequence.contextswitcher.pas- Minor preemptive scheduling progress.sha1.pas(moved to separate branch).17 files changed, +1798 / −281
- Add compile_wasuro.sh to sparse-clone Wasuro src/wasm from gitea (develop branch) with caching to skip redundant pulls - Update compile.sh to include wasuro build step in pipeline - Update compile_sources.sh to dynamically discover -Fu paths via find across src/ and wasuro/ directories - Extend system.pas with FPC 3.2.2 compilerprocs required by Wasuro: - 64-bit signed/unsigned div and mod (fpc_div_int64, fpc_mod_int64, fpc_div_qword, fpc_mod_qword) with correct i386 parameter mapping - 64-bit multiply (fpc_mul_int64) via three 32-bit MUL instructions - Float-to-integer intrinsics (Trunc, Round) using x87 FPU - Memory allocation compilerprocs (fpc_getmem, fpc_freemem) delegating to kernel kalloc/kfree - Exception handling stubs (reraise, raiseexception, catches, doneexception) - setjmp/longjmp for exception address stack - Fix sInt64 type alias (was longint/32-bit, now int64/64-bit) - Add serial debug helpers (COM1 $3F8) for bare-metal tracing - Wire up Wasuro in kernel.pas: init WASM VM, set I/O callback to syslog, and run all 1103 Wasuro tests (0 failures) - Update .gitignore to exclude wasuro/ cache directory- ramdrive: rewrite from registerDrive callbacks to TFilesystem/TStorage_Volume hooks (rd_Read, rd_ReadDir, rd_ReadOffset, rd_Identify) and mount via vfs.mountVolume('/disk/ram', ...). Remove open-slot tracking; VFS now manages file handles through the FD table. - vfs: fix PathValid for otDRIVE nodes — split relative path into parent directory + leaf name, list the parent via readDirCallback, and check each entry's type so individual files are correctly identified as pvFile instead of always returning pvDirectory or pvInvalid. - desktop: replace static array[0..MAX_PROGRAMS-1] program registry with a dynamic PLinkedListBase. Lazy-init on first registerProgram call. Remove prog_count := 0 from init so programs registered before desktop.init (e.g. notepad, diskutil) are no longer wiped. - filedispatch, wasmrunner: add storagetypes to uses, remove stale Lock parameter from vfs.OpenFile calls. - progmanager: clean up duplicate uses clauses and remove invalid kernel.bsod registration.