Hojun-Cho
1657bdeda3
C bootstrap (phases 0-9):
cmd/wwc, cmd/6c, cmd/6a, cmd/6l, cmd/ww, rt, lib/*.
ww-side self-host (phase 10):
selfhost/cmd/wwc — ww-cgen frontend; bootstrap fixed point.
selfhost/cmd/6a — assembler; byte-identical to C 6a (test 991).
selfhost/cmd/6l — linker w/ archive (.a) support; byte-identical
to C 6l (test 992).
selfhost/cmd/ww — driver (build/run/version); byte-identical to
C ww (test 993).
make test: 15/15. make bootstrap: ww2.s == ww3.s, ww2.o == ww3.o,
ww2 == ww3 byte-identical, with the full ww-tooled chain.
20 lines
480 B
Plaintext
20 lines
480 B
Plaintext
// encoding/hex — encode/decode hexadecimal pairs.
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export fn encode(dst: []u8, src: []u8) i32 = {
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let i: i32 = 0;
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let j: i32 = 0;
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for (i < src.len) {
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let b: u8 = src[i];
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let hi: u8 = (b: i32 >> 4): u8 & ('\x0f': u8);
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let lo: u8 = b & ('\x0f': u8);
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if (hi < 10) { dst[j] = hi + ('0': u8); }
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else { dst[j] = hi - 10 + ('a': u8); };
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j += 1;
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if (lo < 10) { dst[j] = lo + ('0': u8); }
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else { dst[j] = lo - 10 + ('a': u8); };
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j += 1;
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i += 1;
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};
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return j;
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};
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