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<title>rs-dos/scripts/build-image-release.sh, branch qemu</title>
<subtitle>Simple, kernel-only, 64bit OS, early stage.
</subtitle>
<id>https://git.2137697.xyz/rs-dos/atom?h=qemu</id>
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<updated>2026-11-01T14:53:29Z</updated>
<entry>
<title>scripts: rebuild the dev loop around build.sh/run.sh</title>
<updated>2026-11-01T14:53:29Z</updated>
<author>
<name>salmonik</name>
<email>salmonik@tuta.io</email>
</author>
<published>2026-11-01T14:53:29Z</published>
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<id>urn:sha1:7958276c9f0d230053520ba20f2a00f5ecda18e4</id>
<content type='text'>
`make` did not parse at all (missing separator at line 139), so every
make target was dead.  The folder also carried three overlapping
launchers (boot.sh, qemu.sh, boot-image.sh) plus a fourth partial one
in the Makefile, `cargo build --package rsdos` copy-pasted eight times,
the QEMU invocation copy-pasted per script, and the test helpers
(fail/wait_log/wait_qemu_exit/qemu_hmp) duplicated in five tests.

New layout:
- scripts/lib.sh: single config (image, OVMF, mem/smp), the one cargo
  invocation (build_all), the one QEMU shape (qemu_args), and the test
  harness (test_boot, wait_log, wait_qemu_exit, qemu_hmp, sendkeys)
- scripts/build.sh: kernel + every bins/* in one pass
- scripts/mksystem.sh: freshness-aware image build that now stages
  every bins/*.efi into /bin/cli|gui (they were never copied before)
- scripts/run.sh: build + stage + boot in one command; --headless,
  --debug (GDB stub), --monitor (HMP socket), --fresh, --mem/--smp/
  --bios/--image; on Wayland it auto-selects XWayland plus
  grab-on-hover so the mouse can be captured (Ctrl+Alt+G toggles)
- scripts/tests/: the five automated tests on the shared harness
- deleted: boot.sh, qemu.sh, boot-image.sh, lib-boot-args.sh,
  build-image-release.sh, build-bootloader.sh (rsboot chain dropped)

The Makefile is now a thin wrapper: make run, make test, make system,
make inspect, make help.  Two-command flow: ./scripts/build.sh then
./scripts/run.sh (run.sh alone also works).

Stale test assumptions fixed so the suite is green again: test-gfx
waited for "gfx: check" while the shell prints "gfx check: PASS";
test-mouse/test-msg hardcoded msgrecv = task 3 (wm-input took slot 3 —
ids are parsed from the log now); the queue-full probe targeted task 0,
whose exec pump drains its own queue as completion codes (moved to the
cursor task, which never recvs).

Verified in QEMU: make test -&gt; test-disk, test-gfx, test-mouse,
test-msg, test-fault all PASS.
</content>
</entry>
<entry>
<title>scripts: migrate all QEMU/test scripts to single system image</title>
<updated>2026-08-27T16:35:59Z</updated>
<author>
<name>salmonik</name>
<email>salmonik@tuta.io</email>
</author>
<published>2026-08-27T16:35:59Z</published>
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<content type='text'>
boot.sh: replace esp/ + DISK_IMG with single SYSTEM_IMG on ide.0
(hooks into mksystem.sh --force for auto-staging).

boot-image.sh: delegate to mksystem.sh --chain (build-image.sh deleted).

build-image-release.sh: delegate to mksystem.sh --chain --gpt.

qemu.sh: flexible launcher uses SYSTEM_IMG; --chain flag for
full-chain build.

test-disk.sh: drop ESP_DIR (mksystem.sh stages everything).

test-fault.sh: boot system.img on ide.0 + CRASHLOG stick on ide.1;
replace deleted mkdisk.sh with inline mkfs.fat.

test-gfx.sh: system.img on ide.0, stage via mksystem.sh.

test-mouse.sh: system.img on ide.0, stage via mksystem.sh.

test-msg.sh: system.img on ide.0, stage via mksystem.sh.

Makefile: remove stale build-image.sh/mkdisk.sh references from help;
image target delegates to mksystem.sh --chain.

All scripts syntax-checked (bash -n). build-image.sh and mkdisk.sh
no longer referenced anywhere.
</content>
</entry>
<entry>
<title>v0.5.5: fix real-hardware boot crash — shadow back in heap as first allocation</title>
<updated>2026-08-02T00:16:40Z</updated>
<author>
<name>salmonik</name>
<email>salmonik@tuta.io</email>
</author>
<published>2026-08-02T00:16:40Z</published>
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<id>urn:sha1:d9fe082ef07b6e5c599585d6911dbad2bbe4c787</id>
<content type='text'>
User's machine: boot reached 'rsnix: boot done — shell' then panicked
'len is 0, index 0' at the first cell write — CELLS (the vt grid) was
valid at vt::init and empty at the first shell paint, i.e. something
stomped the heap between vt::init and the shell banner.  The only
change in that window vs the working v0.5.3 was the v0.5.4 move of the
1.9 MB display shadow from the heap to the fb-aware page allocator:
on this machine's memory layout the page-allocator shadow's fill loop
(480K words) clobbered the heap's vt vectors.

- Shadow is again the *first* heap allocation, in gop::init before
  vt::init builds its grids (the v0.5.3 layout that provably boots on
  the user's hardware) — nothing else in the heap can collide with it.
- init_heap now splits the free list at the GOP framebuffer hole
  instead of subtracting its size from one block that still *spanned*
  the hole — no heap allocation of any size can land on the display.
- Kept the panic-proof try_reserve + fb-overlap rejection + no-shadow
  warning band; dropped the late init_shadow() call in main.rs.
- Verified on QEMU: shadow @ 0x1980020 origin=heap, allocated before
  vt::init, fb clean at 0x80000000; all 5 suites PASS; 0 warnings.
</content>
</entry>
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