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Add general support for bit_fields

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gingerBill
2024-02-22 17:24:42 +00:00
parent a4b8c1ea17
commit 5a84a08225
12 changed files with 245 additions and 17 deletions
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base/runtime/internal.odin
+22
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@@ -1034,3 +1034,25 @@ fixdfti :: proc(a: u64) -> i128 {
}
}
__write_bits :: proc "contextless" (dst, src: [^]byte, offset: uintptr, size: uintptr) {
for i in 0..<size {
j := offset+i
the_bit := byte((src[i/8]) & (1<<(i&7)) != 0)
b := the_bit<<(j&7)
dst[j/8] &~= b
dst[j/8] |= b
}
}
__read_bits :: proc "contextless" (dst, src: [^]byte, offset: uintptr, size: uintptr) {
for j in 0..<size {
i := offset+j
the_bit := byte((src[i/8]) & (1<<(i&7)) != 0)
b := the_bit<<(j&7)
dst[j/8] &~= b
dst[j/8] |= b
}
}