shoney.arickathil
631d277e0c
- 16 tasks complete: arena, object model, borrow word, containers, RC + budgeted cycle collector, wob_build, validating loader, interpreter core (dual dispatch), object opcodes, drop-map unwinding, builtins + DB_STUB + TRAP, ICALL, wovm CLI + just recipes - 13 test suites × 2 dispatch flavors (ASan+UBSan) + CLI smoke, all green - .wob v1 format pinned in src/wob.h + docs/plan/oop-vm/00-wob-format.md - wo-rt.c reference event-loop preserved for sub-project 2 This is Iteration 2 of the OOP milestone; compiler front (Iteration 3) is in progress on this branch. They meet at Iteration 4 (emitter+e2e).
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/* loader.h — .wob loading + the full static-validation contract.
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* The "no UB on any input" constraint lives here: everything is parsed
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* through a bounds-checked cursor and COPIED OUT into aligned, malloc'd
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* structures (misaligned files and input-buffer lifetimes are non-issues);
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* text constants intern as const-flagged strings. What the loader accepts,
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* the interpreter trusts forever — the validation list is in loader.c.
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* Field indexes on GETF/SETF stay runtime checks (registers are untyped):
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* the spec's residual-check doctrine. */
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#ifndef WO_LOADER_H
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#define WO_LOADER_H
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#include "obj.h"
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typedef struct wo_lineent {
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uint32_t pc, line;
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} wo_lineent;
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typedef struct wo_dropent {
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uint32_t pc;
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uint64_t owned; /* register bitmask: live owned values at pc */
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uint64_t gc; /* register bitmask: live @gc references at pc */
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} wo_dropent;
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typedef struct wo_methodrec {
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uint32_t name; /* constant index of a text constant */
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uint32_t class_id; /* WOB_NONE = free fn */
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uint8_t arg_cnt, reg_cnt;
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uint32_t *code; /* aligned owned copy */
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uint32_t ninstr;
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wo_lineent *lines;
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uint32_t line_cnt;
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wo_dropent *drops;
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uint32_t drop_cnt;
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} wo_methodrec;
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typedef struct wo_const {
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uint8_t tag; /* WOB_K_INT / WOB_K_TEXT */
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int64_t i; /* tag INT */
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wo_str *s; /* tag TEXT: interned, WO_F_CONST, module-owned */
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} wo_const;
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/* vtable rows expanded flat and sorted by (class_id, slot) for binary
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* search at ICALL time */
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typedef struct wo_vtabent {
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uint32_t class_id, slot, method;
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} wo_vtabent;
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typedef struct wo_module {
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wo_const *consts;
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uint32_t const_cnt;
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wo_classdesc *classes;
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uint32_t class_cnt;
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uint8_t *kindpool; /* pooled field-kind bytes the classes point into */
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uint32_t slot_cnt; /* total interface slots across all interfaces */
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wo_vtabent *vtabs;
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uint32_t vtab_cnt;
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wo_methodrec *methods;
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uint32_t method_cnt;
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uint32_t entry; /* WOB_NONE = none */
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} wo_module;
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/* 0 ok; -1 reject with a human-readable reason in err (never empty) and
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* everything parsed so far freed. */
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int wo_load_buf(wo_module *m, const uint8_t *buf, size_t len, char *err,
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size_t errlen);
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/* mmap -> parse -> munmap */
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int wo_load_file(wo_module *m, const char *path, char *err, size_t errlen);
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void wo_module_free(wo_module *m);
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#endif /* WO_LOADER_H */
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