Reorganize source tree: kernel/, v3/, v4/ split and board infrastructure
Source tree reorganization: - Move StarForth v3 engine to v3/ (src/, include/, Makefile) - Move kernel to kernel/ (src/, include/, linker/, Makefile) - Create v4/ skeleton for F18-ISA golden model (DECOMPOSITION.md, JUSTIFICATION.md) - Move FABRIC-0..4.md to docs/fabric/ - Move ONTOLOGY.md and ROADMAP.md to docs/ Board infrastructure: - Add boards/ser5/, boards/raspi/, boards/milkv/, boards/zynq7020/ - Each board has board.mk (ISA, CPU flags, boot recipe) and README.md - Root Makefile becomes thin dispatcher: boot_image, all, clean, docs take TARGET - make boot_image TARGET=SER5|RASPI|MILKV builds one GPT/MBR image per board - ZYNQ7020 target exists but stops with clear error (ARMv7 port not built yet) - scripts/mkdiskimage.sh builds disk images for all boards Docs pipeline: - docs/book/ with LaTeX master (main.tex) and Makefile - pandoc converts Markdown to LaTeX at build time - Two Lua filters: table-widths.lua (wide tables wrap), code-breaks.lua (inline code breaks) - make docs builds single PDF (754 pages, 0 missing characters) - make docs TARGET=<board> adds board appendix - build/docs/<book|board>/meta.tex stamps git commit into PDF Bug fixes: - 42 include paths that only worked by accident now use correct relative paths - clang-18 hardcode replaced with configurable CC variable (fixed aarch64 build) - Pi 5: kernel_2712.img linked at 0x80000, .bss zeroed, memory reserved - Doxyfile, .clang-tidy, README.md, Kconfig paths updated Verified: - Hosted v3 build passes 1012 tests, 0 failures - SER5 image boots in QEMU (OVMF), POST passes, K exact (65536 = Q48_ONE) - Milk-V image boots in QEMU (OpenSBI + U-Boot + bootefi), POST passes - make clean TARGET=<board> removes only that board and its ISA objects - make all builds all boards, hosted v3, and docs in one run Co-authored-by: Junie <junie@jetbrains.com>
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rajames
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/*
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StarForth — Steady-State Virtual Machine Runtime
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Copyright (c) 2023–2025 Robert A. James
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All rights reserved.
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This file is part of the StarForth project.
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Licensed under the StarForth License, Version 1.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at:
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https://github.com/star.4th@proton.me/StarForth/LICENSE.txt
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This software is provided "AS IS", WITHOUT WARRANTY OF ANY KIND,
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express or implied, including but not limited to the warranties of
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merchantability, fitness for a particular purpose, and noninfringement.
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See the License for the specific language governing permissions and
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limitations under the License.
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StarForth — Steady-State Virtual Machine Runtime
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Copyright (c) 2023–2025 Robert A. James
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All rights reserved.
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This file is part of the StarForth project.
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Licensed under the StarForth License, Version 1.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at:
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https://github.com/star.4th@proton.me/StarForth/LICENSE.txt
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This software is provided "AS IS", WITHOUT WARRANTY OF ANY KIND,
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express or implied, including but not limited to the warranties of
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merchantability, fitness for a particular purpose, and noninfringement.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* kmalloc.h - Kernel heap allocator interface
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*/
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#ifndef STARKERNEL_KMALLOC_H
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#define STARKERNEL_KMALLOC_H
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#include <stddef.h>
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#include <stdint.h>
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typedef struct {
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uint64_t total_bytes;
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uint64_t used_bytes;
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uint64_t peak_bytes;
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uint64_t free_bytes;
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} kmalloc_stats_t;
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int kmalloc_init(uint64_t heap_size_bytes);
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int kmalloc_is_initialized(void);
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void *kmalloc(size_t size);
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void *kmalloc_aligned(size_t size, size_t align);
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void kfree(void *ptr);
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kmalloc_stats_t kmalloc_get_stats(void);
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uintptr_t kmalloc_heap_base_addr(void);
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uintptr_t kmalloc_heap_end_addr(void);
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/* Debug/diagnostic probe -- free-list census (largest free block, count of
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free blocks, count of allocated blocks, total blocks). Kept as permanent
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infrastructure (FABRIC-3.md SXIII, 2026-09-10): a cheap O(n) walk over
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the free list, useful for any future heap-shape investigation, not just
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the one that introduced it. Not called anywhere in the normal boot path
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today -- callers add their own log_message() call sites when debugging. */
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void kmalloc_debug_census(size_t *out_largest_free, size_t *out_free_count,
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size_t *out_used_count, size_t *out_total_blocks);
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/* Same precedent as kmalloc_debug_census() above -- sum of free-block bytes
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and used-block bytes across the whole free list. The pairing of the two
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(block-count census + byte-sum census) is what let FABRIC-3.md SXIII tell
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real heap corruption apart from ordinary fragmentation: fragmentation
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grows free_count while total_free_bytes stays flat; corruption drops
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both together. */
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void kmalloc_debug_census_bytes(size_t *out_total_free_bytes, size_t *out_total_used_bytes);
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#endif /* STARKERNEL_KMALLOC_H */
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