code wiki / _hdl_build / _pe_chwalk2.nx
_pe_chwalk2.nx source
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1// AUTHORED BY THE NISHI BUILDER (pattern: STRUCT_WALK v2 magic/tailrest) -- field-table walk, no Claude logic
2import "nx_syscalls.nx"
3func _pe_chwalk2_locate(b: *u8, n: i64, out: *i64) -> i64 {
4 var off: i64 = 0
5 off = off + 4
6 if off > n { return 0 - 1 }
7 off = off + 2
8 if off > n { return 0 - 1 }
9 off = off + 32
10 if off > n { return 0 - 1 }
11 if off + 1 > n { return 0 - 1 }
12 off = off + 1 + (b[off] & 0xff)
13 if off > n { return 0 - 1 }
14 if off + 2 > n { return 0 - 1 }
15 off = off + 2 + (((b[off] & 0xff) << 8) | (b[off + 1] & 0xff))
16 if off > n { return 0 - 1 }
17 if off + 1 > n { return 0 - 1 }
18 off = off + 1 + (b[off] & 0xff)
19 if off > n { return 0 - 1 }
20 if off + 2 > n { return 0 - 1 }
21 let tl: i64 = ((b[off] & 0xff) << 8) | (b[off + 1] & 0xff)
22 if off + 2 + tl > n { return 0 - 1 }
23 out[0] = off + 2
24 out[1] = tl
25 return 0
26 return 0 - 1
27}