rajamesandJunie
a8b70e88d3
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>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/*
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* StarKernel Q48.16 fixed-point stubs
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*
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* Minimal implementations for kernel build - floating point
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* conversion is not needed for core VM operation.
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*/
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#include "q48_16.h"
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/*
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* @brief Convert a @c double to Q48.16 fixed-point (kernel stub — always 0).
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*
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* Floating-point arithmetic is unavailable in the freestanding kernel build,
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* so this function is a deliberate no-op stub. It discards @p d and returns
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* a zero-valued @c q48_16_t. Shared VM code that calls @c q48_from_double()
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* only uses it for logging and diagnostic output (e.g., @c WORD-ENTROPY),
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* which are suppressed in the kernel build, so the zero return is safe.
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*
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* @param d Floating-point value to convert (ignored).
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* @return Zero-valued @c q48_16_t.
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*/
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q48_16_t q48_from_double(double d)
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{
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(void)d;
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q48_16_t zero = {0};
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return zero;
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}
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/*
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* @brief Convert a Q48.16 fixed-point value to @c double (kernel stub — always 0.0).
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*
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* Floating-point arithmetic is unavailable in the freestanding kernel build,
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* so this function is a deliberate no-op stub. It discards @p q and returns
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* @c 0.0. Shared VM code that calls @c q48_to_double() only uses the result
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* for logging and RStudio/CSV export paths that are inactive in the kernel
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* build, so the zero return is safe.
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*
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* @param q Q48.16 value to convert (ignored).
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* @return @c 0.0 always.
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*/
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double q48_to_double(q48_16_t q)
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{
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(void)q;
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return 0.0;
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}
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