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docs: rewrite architecture.txt + fix mem offsets

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architecture.txt drifted from code: missing HASH_SCRATCH region,
runtime-trait box, wordlists/search-order, codegen locals layout,
F: locals, quotations, crypto. Rewrite from current source.

memory.rs `// 0x...` annotations were the drift source — RETURN
/ FLOAT / HASH / DICT bases printed values disagreeing with the
const arithmetic. Recompute and correct.
This commit is contained in:
Oleksandr Kozachuk
2026-04-16 20:51:12 +02:00
parent 1a8f27b5bd
commit 49582f7e86
2 changed files with 338 additions and 166 deletions
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crates/core/src/memory.rs
+4 -4
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@@ -50,23 +50,23 @@ pub const DATA_STACK_BASE: u32 = WORD_BUF_BASE + WORD_BUF_SIZE; // 0x0600
pub const DATA_STACK_SIZE: u32 = 4096; // 1024 cells
/// Return stack region. Grows downward.
pub const RETURN_STACK_BASE: u32 = DATA_STACK_BASE + DATA_STACK_SIZE; // 0x1540
pub const RETURN_STACK_BASE: u32 = DATA_STACK_BASE + DATA_STACK_SIZE; // 0x1600
/// Size of return stack region.
pub const RETURN_STACK_SIZE: u32 = 4096;
/// Floating-point stack region (fallback). Grows downward.
pub const FLOAT_STACK_BASE: u32 = RETURN_STACK_BASE + RETURN_STACK_SIZE; // 0x2540
pub const FLOAT_STACK_BASE: u32 = RETURN_STACK_BASE + RETURN_STACK_SIZE; // 0x2600
/// Size of float stack region.
pub const FLOAT_STACK_SIZE: u32 = 2048; // 256 doubles
/// Hash scratch region — output buffer for `SHA1`/`SHA256`/`SHA512` and
/// other hash host words. Sized for the largest supported digest (SHA512 = 64 B).
pub const HASH_SCRATCH_BASE: u32 = FLOAT_STACK_BASE + FLOAT_STACK_SIZE; // 0x2D40
pub const HASH_SCRATCH_BASE: u32 = FLOAT_STACK_BASE + FLOAT_STACK_SIZE; // 0x2E00
/// Size of hash scratch region.
pub const HASH_SCRATCH_SIZE: u32 = 128;
/// Dictionary region start. Grows upward.
pub const DICTIONARY_BASE: u32 = HASH_SCRATCH_BASE + HASH_SCRATCH_SIZE; // 0x2DC0
pub const DICTIONARY_BASE: u32 = HASH_SCRATCH_BASE + HASH_SCRATCH_SIZE; // 0x2E80
/// Initial top of data stack (grows down from here).
pub const DATA_STACK_TOP: u32 = DATA_STACK_BASE + DATA_STACK_SIZE;