Spexeah/Asuro
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46 Commits
Author SHA1 Message Date
t3hn3rd fc080027b2 Merge branch 'feature/memory-allocation-optimization' into feature/process-management 
# Conflicts:
#	src/kernel.pas
#	src/lmemorymanager.pas
#	src/progmanager.pas
 2026-03-04 11:36:17 +00:00
t3hn3rd 8b4335768b refactor(memory): complete PMM/VMM/LMM rewrite - bitmap allocators, bug fixes, hardening
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PMM Rewrite:
- Replace ~8KB record array with compact bitmaps
  (PhysPresent/PhysAlloc/PhysScanned, 128B each)
- Add PhysOwner[0..1023] for per-block ownership tracking
- new_block: O(1) amortised via NextFreeHint + dword-level BSF scan,
  returns 0 as OOM sentinel
- free_block: O(1) direct bit clear with double-free detection
- alloc_block: validates PhysPresent and PhysAlloc bits before allocation
- Add pmm_free_blocks/pmm_total_blocks stats functions

VMM Correctness Fixes:
- Fix free_page block extraction (Address SHR 10, was using
  raw Address field)
- Fix invlpg operand (use virtual address, was passing PDE index)
- Clear PDE entry on free_page before returning block to PMM
- Remove map_page double-write (delegate to map_page_ex only)
- Add OOM propagation (new_page returns false if PMM returns 0)
- Fix missing pop_trace in new_page error path

LMM Rewrite:
- Replace per-entry record array with bitmap allocator
  (93% vs 43% page efficiency)
- Layout: Header(24B) + Bitmap(64512B) + Padding + Data at 0x10000
- SIZE_PREFIX=16 for 16-byte aligned returns (SSE MOVAPS requirement)
- Next-fit bitmap scan with roving hint (NextFree) and dword-level
  fast skip
- Large alloc sentinel (LARGE_ALLOC_MAGIC=$FFFFFFFE) so kfree detects
  klalloc'd memory
- Implement klfree (was previously a no-op - pages could never
  be returned)
- Implement try_release_page (return fully-free heap pages to VMM/PMM)
- Fix interrupt safety: stack-balanced pushfd/cli/pop +
  restore_if (sti only)
  Fixes Bad TSS caused by popfd restoring dangerous EFLAGS bits (NT, IOPL)
- Zero memory via rep stosd instead of byte-by-byte loop

Hardening:
- kalloc OOM now triggers BSOD instead of returning nil
  (90% of callers don't check)
- Double-free detection in kfree (verify bitmap bits set before clearing)
- Guard bytes ({$IFDEF DEBUG_LMM}): $DEADBEEF sentinel for buffer overrun detection
- kpalloc: bounds check (block >= 1024 -> GPF) + syslog MMIO mapping audit log

Observability:
- Add MEMINFO command as src/prog/meminfo.pas (moved from inline kernel.pas)
- Displays multiboot memory, PMM block stats, LMM heap stats
- Register via progmanager.pas following standard prog pattern

Files changed:
- src/pmemorymanager.pas
- src/vmemorymanager.pas
- src/lmemorymanager.pas
- src/kernel.pas
- src/progmanager.pas
- src/prog/meminfo.pas
 2026-03-04 10:36:09 +00:00
t3hn3rd 035d489c4f feature: preemptive process management - implementation progress
continuous-integration/drone/push Build is passing
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Implement a preemptive multitasking system for the Asuro kernel.

Context Switching & Scheduling:
- Custom IRQ0 ISR (contextswitcher.pas) with PUSHAD/POPAD ESP-swap
- Round-robin scheduler with priority-based quantum
- Process table using DList of PProcessContext pointers
- Idle process (PID 0) replaces kernel HLT loop

Process Lifecycle:
- create/kill/terminate/sendMessage API (processmanager.pas)
- Process states: Created, Running, Ready, Suspended, Awaiting,
  Finished, Error
- Parent-child tracking (ParentID, smChildExited notification on reap)
- proc_yield, proc_sleep_ms, proc_await, proc_suspend, proc_exit

Resource Binding & Cleanup:
- Per-process resource list
  (bindResource/unbindResource/unbindAllResources)
- TCP sockets auto-bound to owning process (OwnerPID on TTCPSocket)
- socket_cleanup + auto-unbind in DestroySocket

VTerminal Refactor:
- Multi-instance design (heap-allocated TVTermState per terminal)
- Foreground process with incremental stdout/stderr drain via LVGL timer
- Ctrl+C kills foreground process (killForeground)
- Per-terminal CWD, dir stack, FS builtins (CD/LS/PUSHD/POPD)
- Background job support (& suffix, JOBS/FG commands)
- Command history (Up/Down arrow)

Command Consolidation:
- 14 commands extracted from 9 units into centralized progmanager.pas
- Command procedures exported in host unit interfaces
- E1000/TRACER/stdio builtins kept in-place (conditional/circular)

New Units:
- src/include/proctypes.pas — process type definitions
- src/processmanager.pas — core process manager
- src/prog/ping.pas — standalone ICMP ping process
- src/prog/testcmd.pas — test command (proc_sleep_ms demo)
- src/testprocs.pas — process subsystem smoke tests

Misc:
- ICMP callbacks gain userData parameter for concurrency-safe ping
- CLI/STI guards on kalloc/kfree (lmemorymanager.pas)
- LV_KEY_CTRLC constant + Ctrl+C interception in LVGL keyboard hook
- Window owner PID tracking (windows.pas)
- ISR_32 gate override support (isrmanager.pas)
 2026-03-03 19:02:21 +00:00
t3hn3rd cb7144f282 USB Stack & HID Refactor 
- New units: usbtypes, usbcore, usbhub, UHCI, OHCI, usb_keyboard,
  usb_mouse
- usbtypes: shared USB descriptors, constants, HC abstraction,
  aligned alloc, unit tests
- usb_keyboard: USB HID boot keyboard driver with HID-to-ASCII
  translation, polling, unit tests
- usb_mouse: USB HID boot mouse driver with delta/scroll/button
  processing, polling, unit tests

HID Layer Restructure:
- keyboard.pas: stripped to abstract API (hook + reportKeyEvent),
  no PS/2 dependency
- mouse.pas: absorbed mousestate.pas, now owns
  position/buttons/scroll/hooks directly
- mousestate.pas: deleted (merged into mouse.pas)
- New ps2_keyboard.pas: PS/2 scan code translation,
  calls keyboard.reportKeyEvent
- New ps2_mouse.pas: PS/2 packet handling, calls
  mouse.setMousePos/fireMouseEvent

LVGL Integration:
- lvgl.pas: updated to use mouse.pas directly (was mousestate),
  improved keyboard input handling with proper key held/release tracking
- vterminal.pas: removed serial debug logging, dropped serial dependency

Kernel:
- kernel.pas: added USB units, USB polling in main loop, unit test
  calls, ps2_keyboard/ps2_mouse init
 2026-03-01 21:23:33 +00:00
t3hn3rd f752be48ce refactor/feature/fix: Major refactor of codebase
continuous-integration/drone/push Build is passing
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refactor(stdio): replace console/terminal command system with buffer-based stdio
- Introduced stdio.pas as the unified command I/O layer.
- All 31 command procedures across 15 files now receive stdin_buf,
  stdout_buf, and stderr_buf (POutBuf) instead of a single outbuf.
- vterminal.pas creates all three buffers per command invocation and
  displays both stdout and stderr.
- Deleted console.pas, terminal.pas, and 9 obsolete windowing programs
  (shell, splash, edit, memview, themer, netlog, vmlog, vmstate, udpcat).
- Migrated all registerCommand calls to stdio, rewrote vterminal
  processCommand to use stdio.findCommand, and added proper error
  routing to stderr for invalid params, bad paths, and system errors.

refactor(syslog): replace console logging with serial-backed syslog
- Introduced syslog.pas for kernel-level logging over serial/dev.
- Migrated all boot logging in kernel.pas from console.outputln/
  writestringln to syslog.logln/writestringln.
- Converted 19 fault handlers, hashmap, lists, scheduler, tracer, net,
  udp, and all driver init paths to use syslog.
- Rewrote BSOD in util.pas (50+ calls) from console to syslog.
- Removed CONSOLE_SLOW_REDRAW, TRGB565, TRGB565Pair, and HWND
  from system.pas.

fix(keyboard): add ring buffer and proper press/release cycling for LVGL input
- Replaced the single last_key/key_pressed slot in lvgl.pas with a
  16-entry ring buffer (kb_buf, kb_head, kb_tail) to prevent ISR
  overwrites when typing fast.
- Added a kb_pending_release flag so each keystroke gets a
  full PRESSED->RELEASED cycle before the next key is consumed —
  LVGL requires this pairing and was silently dropping intermediate
  keys when receiving consecutive PRESSED events without
  intervening releases.

feat(vterminal): use Hack monospace font for terminal output
- Added Hack Regular 14px (hack_14.c) as a custom LVGL font.
- Removed the .static_bitmap field from the generated font file
  (not present in LVGL 9.2 lv_font_t struct).
- Declared the hack_14 external symbol in lvgl.pas and switched
  vterminal's text label from lv_font_montserrat_14 to hack_14
  for proper monospace terminal rendering.
 2026-03-01 02:06:31 +00:00
t3hn3rd 98a14bc7dc More work towards LVGL implementation
continuous-integration/drone/push Build is failing
Details
2026-02-27 22:43:02 +00:00
t3hn3rd 64b3c9a7ba Apache License 
Added the apache license to all source files, accounting for authors. Also added a license.md containing the apache license + contributors.md listing all contributors.
 2021-06-22 21:31:17 +01:00
kieron 6b6129b769 Added VFS 
git-svn-id: https://spexeah.com:8443/svn/Asuro@1318 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c
 2020-07-18 21:00:31 +00:00
aaron d4234225d1 Started rewrite of storage system. 
git-svn-id: https://spexeah.com:8443/svn/Asuro@1299 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c
 2020-07-17 22:30:36 +00:00
kieron a7ee8c6d34 Hashmap added. 
git-svn-id: https://spexeah.com:8443/svn/Asuro@1235 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c
 2020-07-15 23:03:32 +00:00
kieron 7a48111bf3 git-svn-id: https://spexeah.com:8443/svn/Asuro@1035 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2020-07-12 17:02:35 +00:00
kieron fbc59a1617 DHCP Works now. 
git-svn-id: https://spexeah.com:8443/svn/Asuro@1034 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c
 2020-07-12 17:02:14 +00:00
goose 8b3d59918d Addition of base64 module and prog 
git-svn-id: https://spexeah.com:8443/svn/Asuro@975 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c
 2020-07-11 18:51:52 +00:00
kieron 739898068b md5 complete + md5sum added as a prog. 
git-svn-id: https://spexeah.com:8443/svn/Asuro@971 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c
 2020-07-11 00:44:05 +00:00
kieron 5d26e199aa git-svn-id: https://spexeah.com:8443/svn/Asuro@918 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2020-07-09 21:06:52 +00:00
kieron b60870984b git-svn-id: https://spexeah.com:8443/svn/Asuro@874 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2020-07-08 22:02:42 +00:00
aaron f0e013db2e git-svn-id: https://spexeah.com:8443/svn/Asuro@762 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2019-01-25 15:32:18 +00:00
kieron db58264fa6 Comments now conform to PasDoc specifications. 
git-svn-id: https://spexeah.com:8443/svn/Asuro@749 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c
 2018-10-12 20:49:03 +00:00
kieron 877ef01b80 git-svn-id: https://spexeah.com:8443/svn/Asuro@748 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-09-29 14:32:04 +00:00
kieron 0c939b8b31 git-svn-id: https://spexeah.com:8443/svn/Asuro@747 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-09-29 12:50:40 +00:00
kieron 8066634367 git-svn-id: https://spexeah.com:8443/svn/Asuro@746 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-22 03:33:51 +00:00
kieron 17f41d9794 git-svn-id: https://spexeah.com:8443/svn/Asuro@744 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-13 19:43:43 +00:00
kieron beb04a225a git-svn-id: https://spexeah.com:8443/svn/Asuro@733 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-13 10:35:04 +00:00
kieron 7e293e683b git-svn-id: https://spexeah.com:8443/svn/Asuro@731 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-12 20:25:42 +00:00
kieron fabe8bd6eb git-svn-id: https://spexeah.com:8443/svn/Asuro@677 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-10 07:39:07 +00:00
kieron 1615e6781a git-svn-id: https://spexeah.com:8443/svn/Asuro@670 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-07 21:47:59 +00:00
kieron b9d6225cb8 git-svn-id: https://spexeah.com:8443/svn/Asuro@668 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-06 05:58:03 +00:00
kieron fee4e4d759 git-svn-id: https://spexeah.com:8443/svn/Asuro@667 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-05 23:39:12 +00:00
kieron cac366e78c git-svn-id: https://spexeah.com:8443/svn/Asuro@664 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-05 21:04:48 +00:00
kieron e5321d8b46 git-svn-id: https://spexeah.com:8443/svn/Asuro@663 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-05 19:57:37 +00:00
kieron 80ffb9a60b git-svn-id: https://spexeah.com:8443/svn/Asuro@658 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-04 00:10:05 +00:00
kieron 0406efe0ec git-svn-id: https://spexeah.com:8443/svn/Asuro@657 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-04 00:08:21 +00:00
kieron 6ae51ac70d git-svn-id: https://spexeah.com:8443/svn/Asuro@654 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-03 23:16:37 +00:00
kieron a5bae52f09 git-svn-id: https://spexeah.com:8443/svn/Asuro@653 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-03 01:45:14 +00:00
kieron b42c7641e6 git-svn-id: https://spexeah.com:8443/svn/Asuro@651 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-02 17:17:58 +00:00
kieron 191f0a8159 git-svn-id: https://spexeah.com:8443/svn/Asuro@650 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 21:31:07 +00:00
kieron 9915c45e00 git-svn-id: https://spexeah.com:8443/svn/Asuro@649 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 20:45:42 +00:00
kieron de17203bf7 git-svn-id: https://spexeah.com:8443/svn/Asuro@648 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 20:40:43 +00:00
kieron 7197be24e8 git-svn-id: https://spexeah.com:8443/svn/Asuro@647 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 20:20:34 +00:00
kieron 96025771fe git-svn-id: https://spexeah.com:8443/svn/Asuro@646 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 20:14:38 +00:00
kieron 4cf64375f8 git-svn-id: https://spexeah.com:8443/svn/Asuro@644 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 19:14:26 +00:00
kieron e8508fb22f git-svn-id: https://spexeah.com:8443/svn/Asuro@643 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 18:35:40 +00:00
kieron 6d8717a7fc git-svn-id: https://spexeah.com:8443/svn/Asuro@642 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 17:34:47 +00:00
kieron ecf09646ec git-svn-id: https://spexeah.com:8443/svn/Asuro@625 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-05-01 01:35:45 +00:00
kieron d709244a3a git-svn-id: https://spexeah.com:8443/svn/Asuro@611 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-04-30 19:06:43 +00:00
kieron f1d3dabe14 git-svn-id: https://spexeah.com:8443/svn/Asuro@610 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c 2018-04-30 17:22:09 +00:00