66bdc70bf1
Move examples/*.sx and their expected/ snapshots into per-category subfolders (examples/<category>/...). Folder = leading filename token, with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus runner and LSP sweep now discover each category's expected/ dir, while issues/ stays flat. Example 1058's repo-root-relative companion import is made file-relative. Path strings embedded in 164 snapshots were regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
26 lines
1.1 KiB
Plaintext
26 lines
1.1 KiB
Plaintext
// Stream B1 (fibers) — an `abi(.naked)` function with PARAMETERS reads its args
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// from ABI registers (the shape the fiber context-switch needs: `swap_context`
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// reads `from`/`to` from x0/x1).
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//
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// A naked function has no frame, so params are NOT spilled to stack slots — they
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// stay in their ABI registers and the asm body reads them directly. Here `a` is
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// in x0, `b` in x1 (aarch64 AAPCS), and the result returns in x0: `add x0, x0,
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// x1`. The lowering skips the param-alloca loop for `.naked` (decl.zig /
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// generic.zig); the LLVM args are declared-but-unused, which the verifier allows
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// (spilling them would emit `store i64 %0, …` → "cannot use argument of naked
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// function"). aarch64-pinned; runs end-to-end (exit 42), ir-only on a mismatch.
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//
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// Regression for an adversarial-review finding: before the param-alloca guard, a
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// param-bearing `.naked` fn emitted invalid LLVM (loud verifier error) instead of
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// a working naked function.
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add :: (a: i64, b: i64) -> i64 abi(.naked) {
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asm volatile {
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#string A
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add x0, x0, x1
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ret
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A
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};
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}
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main :: () -> i64 { return add(40, 2); }
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