Robert Allan JamesandClaude Sonnet 5
37eec5aaa1
FABRIC.md item 4.5d: GCC's -O2 folds putchar(c)/fputc(c,stdout) call sites into putc(c,stdout), and getchar() into getc(stdin) -- neither symbol was ever needed at -O0 because that fold pass is inactive there. Both are thin wrappers reusing the existing putchar()/getchar() implementations exactly (putc -> console_putc via putchar; getc -> the existing "no stdin in kernel" -1/EOF stub via getchar), not new behavior. Harmless at the current -O0 build (nothing calls these symbols directly at -O0); this is prep for enabling optimization, verified against a clean amd64 boot at unchanged -O0. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
src/starkernel/
LithosAnanke — the bare-metal UEFI kernel that boots StarForth directly on
hardware (amd64/aarch64/riscv64). Built only via Makefile.starkernel; the
only valid acceptance test is the three-arch QEMU boot (see
.claude/CLAUDE.md), never make test.
kernel_main.c— kernel entry point, driving the boot milestones (console init, PMM, VMM, interrupts, timers, kmalloc heap, VM bootstrap).repl.c— kernel REPL.doe_log.c— kernel-side DoE (Design of Experiments) metrics logging.
Subdirectories:
arch/{amd64,aarch64,riscv64}/— per-architecture support (APIC/GIC/ PLIC interrupt controller, timers, boot/ISR assembly).boot/— UEFI loader, ELF loading, kernel command-line parsing.capsule/— capsule birth/run/load/validate pipeline.hal/— hardware-abstraction-layer implementation (console, framebuffer, VT100, memory, host services).hash/— XXHash64 content-addressing implementation.math/— kernel-build Q48.16 fixed-point arithmetic.memory/— physical/virtual memory managers and the kernel heap.pci/— PCI bus enumeration.virtio/— VirtIO block device driver.vm/— kernel VM subsystem (bootstrap, core interpreter, parity logging, capsule arena).
See include/starkernel/README.md for the corresponding headers.