94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
#include "opcodes.h"
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#include "sleb128.h"
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#include <growl.h>
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static void disassemble(GrowlVM *vm, GrowlQuotation *quot, int indent);
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static size_t disassemble_instr(GrowlVM *vm, GrowlQuotation *quot,
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size_t offset, int indent) {
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for (int i = 0; i < indent; i++) {
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printf(" ");
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}
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printf("%04zu ", offset);
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uint8_t opcode = quot->data[offset++];
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// clang-format off
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#define OPCODE(name) case GOP_## name:
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#define OPCODE1(name) case GOP_## name: printf(#name "\n"); return offset;
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// clang-format on
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switch (opcode) {
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OPCODE1(NOP);
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OPCODE1(PUSH_NIL);
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OPCODE(PUSH_CONSTANT) {
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intptr_t idx;
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size_t bytes_read = growl_sleb128_peek("->data[offset], &idx);
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printf("PUSH_CONSTANT %ld", idx);
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if (quot->constants != GROWL_NIL &&
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growl_type(quot->constants) == GROWL_TYPE_TUPLE) {
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GrowlTuple *constants = growl_unwrap_tuple(quot->constants);
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if (idx >= 0 && (size_t)idx < constants->count) {
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Growl constant = constants->data[idx];
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printf(" (");
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growl_print(constant);
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printf(")");
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if (!GROWL_IMM(constant) && constant != GROWL_NIL &&
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growl_type(constant) == GROWL_TYPE_QUOTATION) {
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putchar('\n');
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GrowlQuotation *inner = growl_unwrap_quotation(constant);
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disassemble(vm, inner, indent + 1);
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return offset + bytes_read;
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}
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}
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}
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putchar('\n');
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return offset + bytes_read;
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}
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OPCODE1(DROP);
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OPCODE1(DUP);
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OPCODE1(SWAP);
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OPCODE1(2DROP);
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OPCODE1(2DUP);
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OPCODE1(2SWAP);
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OPCODE1(NIP);
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OPCODE1(OVER);
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OPCODE1(BURY);
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OPCODE1(DIG);
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OPCODE1(TO_RETAIN);
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OPCODE1(FROM_RETAIN);
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OPCODE1(CALL);
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OPCODE1(CALL_NEXT);
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OPCODE1(TAIL_CALL);
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OPCODE(WORD) {
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intptr_t idx;
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size_t bytes_read = growl_sleb128_peek("->data[offset], &idx);
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printf("WORD %s\n", vm->defs.data[idx].name);
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return offset + bytes_read;
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}
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OPCODE(TAIL_WORD) {
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intptr_t idx;
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size_t bytes_read = growl_sleb128_peek("->data[offset], &idx);
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printf("TAIL_WORD %s\n", vm->defs.data[idx].name);
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return offset + bytes_read;
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}
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OPCODE1(RETURN);
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OPCODE1(COMPOSE);
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OPCODE1(CURRY);
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OPCODE1(PPRINT);
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default:
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printf("%d\n", opcode);
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return offset;
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}
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}
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static void disassemble(GrowlVM *vm, GrowlQuotation *quot, int indent) {
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size_t offset = 0;
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while (offset < quot->count)
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offset = disassemble_instr(vm, quot, offset, indent);
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}
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void growl_disassemble(GrowlVM *vm, GrowlQuotation *quot) {
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disassemble(vm, quot, 0);
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}
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