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w6a,w6l: char-literals for ELF/archive magic bytes (Wave-1)

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byte-id-neutral: every magic-decimal sub is value-equivalent to its
ASCII char-literal. 0x7F (ELF byte-0), ELFCLASS64=2, NUL sentinels,
and hex/itoa radix arithmetic kept decimal (no char identity).
Regenerated w6a/w6l main.combined.ww (the only two embedders).
This commit is contained in:
Hojun-Cho
2026-06-02 20:41:51 +09:00
parent 5987e389b9
commit 2131ae0dee
6 changed files with 152 additions and 152 deletions
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44
selfhost/cmd/w6l/main.ww
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@@ -36,13 +36,13 @@ fn buildpath(dst: *u8, dir: *u8, name: *u8, ext: str) u64 = {
let nn: u64 = cstrlen(name);
let k: u64 = 0u64;
for (k < dn) { dst[i] = dir[k]; i += 1u64; k += 1u64; };
dst[i] = 47u8; // '/'
dst[i] = '/';
i += 1u64;
dst[i] = 108u8; // 'l'
dst[i] = 'l';
i += 1u64;
dst[i] = 105u8; // 'i'
dst[i] = 'i';
i += 1u64;
dst[i] = 98u8; // 'b'
dst[i] = 'b';
i += 1u64;
k = 0u64;
for (k < nn) { dst[i] = name[k]; i += 1u64; k += 1u64; };
@@ -86,13 +86,13 @@ fn buildpathv(dst: *u8, dir: *u8, name: *u8, v: u64) u64 = {
let nn: u64 = cstrlen(name);
let k: u64 = 0u64;
for (k < dn) { dst[i] = dir[k]; i += 1u64; k += 1u64; };
dst[i] = 47u8; i += 1u64;
dst[i] = 108u8; i += 1u64;
dst[i] = 105u8; i += 1u64;
dst[i] = 98u8; i += 1u64;
dst[i] = '/'; i += 1u64;
dst[i] = 'l'; i += 1u64;
dst[i] = 'i'; i += 1u64;
dst[i] = 'b'; i += 1u64;
k = 0u64;
for (k < nn) { dst[i] = name[k]; i += 1u64; k += 1u64; };
dst[i] = 46u8; i += 1u64; dst[i] = 115u8; i += 1u64; dst[i] = 111u8; i += 1u64; dst[i] = 46u8; i += 1u64;
dst[i] = '.'; i += 1u64; dst[i] = 's'; i += 1u64; dst[i] = 'o'; i += 1u64; dst[i] = '.'; i += 1u64;
i = appenddec(dst, i, v);
dst[i] = 0u8;
return i;
@@ -108,18 +108,18 @@ fn islinkable(path: *u8) bool = {
if (n < 4i64) { return false; };
// archive: "!<arch>\n"
if (n >= 8i64) {
if (mp[0u64] == 33u8) { if (mp[1u64] == 60u8) {
if (mp[2u64] == 97u8) { if (mp[3u64] == 114u8) {
if (mp[4u64] == 99u8) { if (mp[5u64] == 104u8) {
if (mp[6u64] == 62u8) { if (mp[7u64] == 10u8) {
if (mp[0u64] == '!') { if (mp[1u64] == '<') {
if (mp[2u64] == 'a') { if (mp[3u64] == 'r') {
if (mp[4u64] == 'c') { if (mp[5u64] == 'h') {
if (mp[6u64] == '>') { if (mp[7u64] == '\n') {
return true;
}; }; }; }; }; }; }; };
};
// ELF: "\x7fELF"
if (mp[0u64] == 127u8) {
if (mp[1u64] == 69u8) {
if (mp[2u64] == 76u8) {
if (mp[3u64] == 70u8) { return true; };
if (mp[1u64] == 'E') {
if (mp[2u64] == 'L') {
if (mp[3u64] == 'F') { return true; };
};
};
};
@@ -177,9 +177,9 @@ fn isso(path: *u8) i32 = {
os.close(fd);
if (n < 20i64) { return 0; };
if (mp[0u64] != 127u8) { return 0; };
if (mp[1u64] != 69u8) { return 0; };
if (mp[2u64] != 76u8) { return 0; };
if (mp[3u64] != 70u8) { return 0; };
if (mp[1u64] != 'E') { return 0; };
if (mp[2u64] != 'L') { return 0; };
if (mp[3u64] != 'F') { return 0; };
// e_type at offset 16, u16 little-endian
let t: u16 = (mp[16u64]: u16) | ((mp[17u64]: u16) << 8u16);
if (t == 3u16) { return 1; };
@@ -225,9 +225,9 @@ export fn main(argc: i32, argv: **u8) i32 = {
};
lflags[nlflags] = argv[i];
nlflags += 1;
} else { if (a[0u64] == 45u8) {
} else { if (a[0u64] == '-') {
// -L<dir> joined form.
if (a[1u64] == 76u8) {
if (a[1u64] == 'L') {
if (a[2u64] != 0u8) {
libdirs[nlibdirs] = a + 2u64;
nlibdirs += 1;
@@ -235,7 +235,7 @@ export fn main(argc: i32, argv: **u8) i32 = {
os.write(2, "w6l: bare -L\n".ptr, 12u64);
return 2;
};
} else { if (a[1u64] == 108u8) {
} else { if (a[1u64] == 'l') {
if (a[2u64] != 0u8) {
lflags[nlflags] = a + 2u64;
nlflags += 1;