view lwasm/list.c @ 393:f2decd9b276d

Fix minor error in string parsing Growing a buffer by 32 bytes and then only saying the buffer grew by one byte is not exactly efficient. While not strictly broken, it's dumb. Fix it to actually count the 32 bytes.
author William Astle <lost@l-w.ca>
date Tue, 14 Jul 2015 23:12:24 -0600
parents 1ebb5a0b2874
children 61580fc48f98
line wrap: on
line source

/*
list.c

Copyright © 2010 William Astle

This file is part of LWTOOLS.

LWTOOLS is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.

You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>
#include <string.h>

#include <lw_alloc.h>
#include <lw_string.h>

#include "lwasm.h"
#include "instab.h"

void list_symbols(asmstate_t *as, FILE *of);

/*
Do listing
*/
void do_list(asmstate_t *as)
{
	line_t *cl, *nl, *nl2;
	FILE *of = NULL;
	int i;
	unsigned char *obytes = NULL;
	int obytelen = 0;
	
	char *tc;
		
	if (!(as -> flags & FLAG_LIST))
		return;
		
	if (as -> list_file)
	{
		if (strcmp(as -> list_file, "-") == 0)
		{
			of = stdout;
		}
		else
			of = fopen(as -> list_file, "w");
	}
	else
		of = stdout;
	if (!of)
	{
		fprintf(stderr, "Cannot open list file; list not generated\n");
		return;
	}
	
	for (cl = as -> line_head; cl; cl = nl)
	{
		char *linespec;

		nl = cl -> next;
		if (CURPRAGMA(cl, PRAGMA_NOLIST))
		{
			if (cl -> outputl <= 0)
				continue;
		}
		if (cl -> noexpand_start)
		{
			obytelen = 0;
			int nc = 0;
			for (nl = cl; nl; nl = nl -> next)
			{
				if (nl -> noexpand_start)
					nc += nl -> noexpand_start;
				if (nl -> noexpand_end)
					nc -= nl -> noexpand_end;
				
				if (nl -> outputl > 0)
					obytelen += nl -> outputl;
				if (nl -> warn)
				{
					lwasm_error_t *e;
					for (e = nl -> warn; e; e = e -> next)
					{
						printf("Warning: %s\n", e -> mess);
					}
				}
				if (nc == 0)
					break;
			}
			obytes = lw_alloc(obytelen);
			nc = 0;
			for (nl2 = cl; ; nl2 = nl2 -> next)
			{
				int i;
				for (i = 0; i < nl2 -> outputl; i++)
				{
					obytes[nc++] = nl2 -> output[i];
				}
				if (nc >= obytelen)
					break;
			}
			if (nl)
				nl = nl -> next;
		}
		else
		{
			if (cl -> warn)
			{
				lwasm_error_t *e;
				for (e = cl -> warn; e; e = e -> next)
				{
					printf("Warning: %s\n", e -> mess);
				}
			}
			obytelen = cl -> outputl;
			if (obytelen > 0)
			{
				obytes = lw_alloc(obytelen);
				memmove(obytes, cl -> output, cl -> outputl);
			}
		}
		if ((cl -> len < 1 && cl -> dlen < 1) && obytelen < 1 && (cl -> symset == 1 || cl -> sym == NULL) )
		{
			if (cl -> soff >= 0)
			{
				fprintf(of, "%04Xs                 ", cl -> soff & 0xffff);
			}
			else if (cl -> dshow >= 0)
			{
				if (cl -> dsize == 1)
				{
					fprintf(of, "     %02X               ", cl -> dshow & 0xff);
				}
				else
				{
					fprintf(of, "     %04X               ", cl -> dshow & 0xff);
				}
			}
			else if (cl -> dptr)
			{
				lw_expr_t te;
				te = lw_expr_copy(cl -> dptr -> value);
				as -> exportcheck = 1;
				as -> csect = cl -> csect;
				lwasm_reduce_expr(as, te);
				as -> exportcheck = 0;
				if (lw_expr_istype(te, lw_expr_type_int))
				{
					fprintf(of, "     %04X             ", lw_expr_intval(te) & 0xffff);
				}
				else
				{
					fprintf(of, "     ????             ");
				}
				lw_expr_destroy(te);
			}
			else
			{
				fprintf(of, "                      ");
			}
		}
		else
		{
			lw_expr_t te;
			if (instab[cl -> insn].flags & lwasm_insn_setdata)
				te = lw_expr_copy(cl -> daddr);
			else
				te = lw_expr_copy(cl -> addr);
			as -> exportcheck = 1;
			as -> csect = cl -> csect;
			lwasm_reduce_expr(as, te);
			as -> exportcheck = 0;
//			fprintf(of, "%s\n", lw_expr_print(te));
			fprintf(of, "%04X%c", lw_expr_intval(te) & 0xffff, ((cl -> inmod || (cl -> dlen != cl -> len)) && instab[cl -> insn].flags & lwasm_insn_setdata) ? '.' : ' ');
			lw_expr_destroy(te);
			for (i = 0; i < obytelen && i < 8; i++)
			{
				fprintf(of, "%02X", obytes[i]);
			}
			for (; i < 8; i++)
			{
				fprintf(of, "  ");
			}
			fprintf(of, " ");
		}

		/* the format specifier below is deliberately chosen so that the start of the line text is at
		a multiple of 8 from the start of the list line */

		#define max_linespec_len 17

		// trim "include:" if it appears
		linespec = cl -> linespec;
		if ((strlen(linespec) > 8) && (linespec[7] == ':')) linespec += 8;
		while (*linespec == ' ') linespec++;

		fprintf(of, "(%*.*s):%05d ", max_linespec_len, max_linespec_len, linespec, cl->lineno);

		if (CURPRAGMA(cl, PRAGMA_CC))
		{
			as->cycle_total = 0;
		}

		/* display cycle counts */
		char s[64] = "";
		if (CURPRAGMA(cl, PRAGMA_C) || CURPRAGMA(cl, PRAGMA_CD))
		{
			if (cl->cycle_base != 0)
			{
				char ch = '(';
				if (CURPRAGMA(cl, PRAGMA_6809)) ch = '[';

				if (CURPRAGMA(cl, PRAGMA_CD) && cl->cycle_flags & CYCLE_ADJ)
				{
					sprintf(s, "%c%d+%d", ch, cl->cycle_base, cl->cycle_adj);	/* detailed cycle count */
				}
				else
				{
					sprintf(s, "%c%d", ch, cl->cycle_base + cl->cycle_adj);   /* normal cycle count*/
				}

				if (cl->cycle_flags & CYCLE_ESTIMATED)
					strcat(s, "+?");

				as->cycle_total += cl->cycle_base + cl->cycle_adj;

				ch = ')';
				if (CURPRAGMA(cl, PRAGMA_6809)) ch = ']';
				sprintf(s, "%s%c", s, ch);
			}
		}

		fprintf(of, "%-8s", s);

		if (CURPRAGMA(cl, PRAGMA_CT)) 
		{
			if (cl->cycle_base != 0)
			{
				fprintf(of, "%-8d", as->cycle_total);
			}
			else
			{
				fprintf(of, "        ");
			}
		}

		if (as -> tabwidth == 0)
		{
			fputs(cl -> ltext, of);
		}
		else 
		{
			i = 0;
			for (tc = cl -> ltext; *tc; tc++)
			{
				if ((*tc) == '\t')
				{
					if (i % as -> tabwidth == 0)
					{
						fputc(' ', of);
						i++;
					}
					while (i % as -> tabwidth)
					{
						fputc(' ', of);
						i++;
					}
				}
				else
				{
					fputc(*tc, of);
					i++;
				}
			}
		}
		fputc('\n', of);

		if (obytelen > 8)
		{
			for (i = 8; i < obytelen; i++)
			{
				if (i % 8 == 0)
				{
					if (i != 8)
						fprintf(of, "\n     ");
					else
						fprintf(of, "     ");
				}
				fprintf(of, "%02X", obytes[i]);
			}
			if (i > 8)
				fprintf(of, "\n");
		}
		lw_free(obytes);
		obytes = NULL;
	}
	if ((as -> flags & FLAG_SYMBOLS))
		list_symbols(as, of);
}