snark13
c71e249a4e
First substantive commit: the entire Sprinter C compiler tree on top of
the bare README+gitignore initial commit.
What's in here:
bin/sprinter-cc — driver script invoking SDCC + linker + mkexe
libc/ — Sprinter-specific libc layer over ESTEX/BIOS
(conio, gfx, io, mem, stdio + headers)
runtime/ — crt0 variants (default/small/banked/minimal)
+ heap + bank trampolines
toolchain/ — mkexe (SprintEXE packer, C + tests)
examples/ — 30 demo programs (gfx, file I/O, env, time, …)
lib/Makefile — builds the libc archive (sprinter.lib)
docs/ — converted Sprinter manuals + asm reference samples
third_party/ — solid-c reference compiler dump + sdcc setup script
release_docs/ — packaging / release notes
gitignore overhaul:
• Drop dangerous blanket patterns: *.asm (would hide docs/samples/*.asm)
and *.exe (case-insensitive match was hiding third_party/solid-c/*.EXE
on macOS APFS). Replaced with examples/*/*.{asm,exe,…} and lib/*.lib.
• Restore tracking of toolchain/mkexe/tests/{one,big}.bin — those are
INPUT fixtures, not build outputs.
• Collapse the duplicated SDCC/C/Sdcc sections into one section per
concern (build outputs / vendored / OS-junk).
• Add .sprinter-cc-*/, build/ (catches lib/build/ too), .claude/.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/*
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* ffirst / fnext — directory iteration via ESTEX $19 / $1A.
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*
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* ESTEX F_FIRST ($19):
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* HL = pattern, DE = buffer, A = attribute mask, B = format (0/1)
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* CF = err / A = error code
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* ESTEX F_NEXT ($1A):
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* DE = same buffer
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* CF = err / A = error code
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*
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* We always use format B=1 — 256-byte buffer with NUL-terminated DOS
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* "name.ext" name at offset 33.
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*
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* ABI note: ffirst takes uint8_t as its 3rd arg. SDCC pushes a *single*
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* byte for that (via `push af; inc sp`), not two — so the callee must
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* pop ret-addr (2 bytes) AND consume the attr byte (`inc sp`) on the way
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* out. Naively `pop bc` would over-eat into the caller's frame.
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*/
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#include <dir.h>
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int ffirst(const char *pattern, ffblk_t *buf, uint8_t attrib) __naked
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{
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(void)pattern; (void)buf; (void)attrib;
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__asm
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;; On entry: HL = pattern, DE = buf, [SP+0..1] = ret, [SP+2] = attr.
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ld iy, #2
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add iy, sp
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ld a, 0 (iy) ; A = attr (read without disturbing SP)
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push ix
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ld bc, #0x0119 ; ESTEX F_FIRST; format: 1 = DOS "name.ext" layout
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rst #0x10
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pop ix
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pop hl ; HL = return address
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inc sp ; consume the 1-byte attr
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jr c, _ff_err
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ld de, #0
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jp (hl)
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_ff_err:
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call __errno_set
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ld de, #-1
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jp (hl)
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__endasm;
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}
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int fnext(ffblk_t *buf) __naked
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{
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(void)buf;
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__asm
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;; HL = buf on entry; ESTEX F_NEXT wants buf in DE.
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push ix
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ex de, hl
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ld c, #0x1A ; ESTEX F_NEXT
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rst #0x10
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pop ix
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jr c, _fnext_err
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ld de, #0
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ret
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_fnext_err:
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call __errno_set
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ld de, #-1
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ret
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__endasm;
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}
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