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- #ifndef L2_VM_H
- #define L2_VM_H
-
- #include <stdlib.h>
-
- #include "../bytecode.h"
- #include "../bitset.h"
-
- struct l2_vm_value {
- enum l2_value_flags {
- L2_VAL_TYPE_NONE,
- L2_VAL_TYPE_INTEGER,
- L2_VAL_TYPE_REAL,
- L2_VAL_TYPE_BUFFER,
- L2_VAL_TYPE_ARRAY,
- L2_VAL_TYPE_NAMESPACE,
- L2_VAL_MARKED = 1 << 7,
- L2_VAL_CONST = 1 << 8,
- } flags;
- union {
- int64_t integer;
- double real;
- void *data;
- };
- };
-
- #define l2_vm_value_type(val) ((val)->flags & 0x0f)
-
- struct l2_vm_buffer {
- size_t len;
- char data[];
- };
-
- struct l2_vm_array {
- size_t len;
- size_t size;
- l2_word data[];
- };
-
- struct l2_vm_namespace {
- struct l2_vm_value *parent;
- size_t len;
- size_t size;
- l2_word mask;
- l2_word data[];
- };
-
- void l2_vm_namespace_set(struct l2_vm_value *ns, l2_word key, l2_word val);
- l2_word l2_vm_namespace_get(struct l2_vm_value *ns, l2_word key);
-
- struct l2_vm {
- l2_word *ops;
- size_t opcount;
- l2_word iptr;
-
- struct l2_vm_value *values;
- size_t valuessize;
- struct l2_bitset valueset;
-
- l2_word stack[1024];
- l2_word sptr;
-
- l2_word nstack[1024];
- l2_word nsptr;
- };
-
- void l2_vm_init(struct l2_vm *vm, l2_word *ops, size_t opcount);
- void l2_vm_free(struct l2_vm *vm);
- void l2_vm_step(struct l2_vm *vm);
- void l2_vm_run(struct l2_vm *vm);
- size_t l2_vm_gc(struct l2_vm *vm);
-
- #endif
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