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Some more Fun VM and Rust interaction. (0.38.2)

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This commit is contained in:
Johannes Findeisen 2026-01-29 02:53:14 +01:00
commit c2e7f3869e
17 changed files with 251 additions and 46 deletions
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22
src/vm.h
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@ -11,6 +11,7 @@
#define FUN_VM_H
#include "bytecode.h"
#include <stddef.h>
#define MAX_FRAMES 128
#define MAX_FRAME_LOCALS 64
@ -56,7 +57,7 @@ static const char *opcode_names[] = {
"TRY_PUSH","TRY_POP","THROW",
"FMIN","FMAX",
/* Rust FFI demo */
"RUST_HELLO","RUST_HELLO_ARGS",
"RUST_HELLO","RUST_HELLO_ARGS","RUST_GET_SP","RUST_SET_EXIT",
/* Notcurses TUI (optional) */
"NC_INIT","NC_SHUTDOWN","NC_CLEAR","NC_DRAW_TEXT","NC_GETCH"
};
@ -160,4 +161,23 @@ const char *fun_rust_get_string(void);
/* Rust function that prints a passed C string, returns 0 on success. */
int fun_rust_print_string(const char *msg);
/* --- Extended C ABI for Rust to access VM internals (unsafe) --- */
/* Size helpers for Rust side to compute offsets and do pointer math */
size_t vm_sizeof(void);
size_t vm_value_sizeof(void);
/* Get a mutable byte pointer to the VM object. Extremely unsafe; intended for
* low-level FFI where Rust wants parity access with C code. */
void *vm_as_mut_ptr(VM *vm);
/* Offsets of commonly accessed VM fields to avoid re-declaring the struct layout in Rust */
size_t vm_offset_of_exit_code(void);
size_t vm_offset_of_sp(void);
size_t vm_offset_of_stack(void);
size_t vm_offset_of_globals(void);
/* Demo Rust ops using the extended ABI */
int fun_op_rget_sp(VM *vm);
int fun_op_rset_exit(VM *vm);
#endif