mirror of
https://github.com/ashinn/chibi-scheme.git
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92 lines
3 KiB
C
92 lines
3 KiB
C
/* debug.c -- optional debugging utilities */
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/* Copyright (c) 2009 Alex Shinn. All rights reserved. */
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/* BSD-style license: http://synthcode.com/license.txt */
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static const char* reverse_opcode_names[] =
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{"NOOP", "TAIL-CALL", "CALL", "APPLY1", "CALLCC", "RESUMECC", "ERROR",
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"FCALL0", "FCALL1",
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"FCALL2", "FCALL3", "FCALLN",
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"JUMP-UNLESS", "JUMP", "RET", "DONE", "PARAMETER", "STACK-REF",
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"LOCAL-REF", "LOCAL-SET", "CLOSURE-REF",
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"VECTOR-REF", "VECTOR-SET", "STRING-REF", "STRING-SET", "MAKE-PROCEDURE",
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"MAKE-VECTOR", "PUSH", "DROP", "PAIRP", "NULLP", "VECTORP",
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"INTEGERP", "SYMBOLP", "STRINGP", "CHARP", "EOFP", "PROCEDUREP", "IPORTP",
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"OPORTP", "CAR", "CDR", "SET-CAR", "SET-CDR", "CONS", "ADD", "SUB", "MUL",
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"DIV", "QUOT", "MOD", "NEG", "INV", "LT", "LE", "GT", "GE", "EQN", "EQ",
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"DISPLAY", "WRITE", "WRITE-CHAR", "NEWLINE", "FLUSH-OUTPUT", "READ",
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"READ-CHAR",
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};
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void disasm (sexp bc) {
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unsigned char *ip=sexp_bytecode_data(bc), opcode;
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loop:
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opcode = *ip++;
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if (opcode*sizeof(char*) < sizeof(reverse_opcode_names)) {
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fprintf(stderr, " %s ", reverse_opcode_names[opcode]);
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} else {
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fprintf(stderr, " <unknown> %d ", opcode);
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}
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switch (opcode) {
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case OP_STACK_REF:
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case OP_LOCAL_REF:
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case OP_LOCAL_SET:
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case OP_CLOSURE_REF:
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case OP_PARAMETER:
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case OP_JUMP:
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case OP_JUMP_UNLESS:
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fprintf(stderr, "%ld", (sexp_sint_t) ((sexp*)ip)[0]);
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ip += sizeof(sexp);
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break;
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case OP_TAIL_CALL:
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case OP_CALL:
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case OP_PUSH:
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sexp_write(((sexp*)ip)[0], cur_error_port);
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ip += sizeof(sexp);
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if (opcode==OP_TAIL_CALL) {
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fprintf(stderr, " ");
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sexp_write(((sexp*)ip)[0], cur_error_port);
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ip += sizeof(sexp);
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}
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break;
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}
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fprintf(stderr, "\n");
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if ((! (opcode == OP_RET) || (opcode == OP_DONE))
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&& (ip - sexp_bytecode_data(bc) < sexp_bytecode_length(bc)))
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goto loop;
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}
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void print_bytecode (sexp bc) {
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int i;
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unsigned char *data = sexp_bytecode_data(bc);
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fprintf(stderr, "bytecode @ %p, data @ %p, length = %lu\n",
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bc, data, sexp_bytecode_length(bc));
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for (i=0; i+16 < sexp_bytecode_length(bc); i+=8) {
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fprintf(stderr, "%02x: %02x %02x %02x %02x %02x %02x %02x %02x ", i,
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data[i], data[i+1], data[i+2], data[i+3],
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data[i+4], data[i+5], data[i+6], data[i+7]);
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i += 8;
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fprintf(stderr, "%02x %02x %02x %02x %02x %02x %02x %02x\n",
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data[i], data[i+1], data[i+2], data[i+3],
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data[i+4], data[i+5], data[i+6], data[i+7]);
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}
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if (i != sexp_bytecode_length(bc)) {
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fprintf(stderr, "%02x:", i);
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for ( ; i < sexp_bytecode_length(bc); i++) {
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if ((i % 8) == 0 && (i % 16) != 0)
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fprintf(stderr, " ");
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fprintf(stderr, " %02x", data[i]);
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}
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fprintf(stderr, "\n");
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}
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}
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void print_stack (sexp *stack, int top, int fp) {
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int i;
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for (i=0; i<top; i++) {
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fprintf(stderr, "%s %02d: ", ((i==fp) ? "*" : " "), i);
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fflush(stderr);
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sexp_write(stack[i], cur_error_port);
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fprintf(stderr, "\n");
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}
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}
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