d18fd210aa
restriction alltogether, so lines with arbitrary length should be handled correctly. Not that it is of much use for an assembler, but this has really been a somewhat ancient limitation. git-svn-id: svn://svn.cc65.org/cc65/trunk@5072 b7a2c559-68d2-44c3-8de9-860c34a00d81
458 lines
12 KiB
C
458 lines
12 KiB
C
/*****************************************************************************/
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/* */
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/* listing.c */
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/* */
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/* Listing support for the ca65 crossassembler */
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/* */
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/* */
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/* */
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/* (C) 2000-2011, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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/* common */
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#include "check.h"
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#include "fname.h"
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#include "fragdefs.h"
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#include "strbuf.h"
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#include "version.h"
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#include "xmalloc.h"
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/* ca65 */
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#include "error.h"
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#include "filetab.h"
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#include "global.h"
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#include "listing.h"
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#include "segment.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Single linked list of lines */
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ListLine* LineList = 0; /* List of listing lines */
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ListLine* LineCur = 0; /* Current listing line */
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ListLine* LineLast = 0; /* Last (current) listing line */
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/* Page and other formatting */
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int PageLength = -1; /* Length of a listing page */
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static unsigned PageNumber = 1; /* Current listing page number */
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static int PageLines = 0; /* Current line on page */
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static unsigned ListBytes = 12; /* Number of bytes to list for one line */
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/* Switch the listing on/off */
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static int ListingEnabled = 1; /* Enabled if > 0 */
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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void NewListingLine (const StrBuf* Line, unsigned char File, unsigned char Depth)
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/* Create a new ListLine struct and insert it */
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{
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/* Store only if listing is enabled */
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if (SB_GetLen (&ListingName) > 0) {
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ListLine* L;
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/* Get the length of the line */
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unsigned Len = SB_GetLen (Line);
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/* Ignore trailing newlines */
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while (Len > 0 && SB_AtUnchecked (Line, Len-1) == '\n') {
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--Len;
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}
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/* Allocate memory */
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L = xmalloc (sizeof (ListLine) + Len);
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/* Initialize the fields. */
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L->Next = 0;
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L->FragList = 0;
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L->FragLast = 0;
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L->PC = GetPC ();
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L->Reloc = GetRelocMode ();
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L->File = File;
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L->Depth = Depth;
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L->Output = (ListingEnabled > 0);
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L->ListBytes = (unsigned char) ListBytes;
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memcpy (L->Line, SB_GetConstBuf (Line), Len);
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L->Line[Len] = '\0';
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/* Insert the line into the list of lines */
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if (LineList == 0) {
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LineList = L;
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} else {
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LineLast->Next = L;
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}
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LineLast = L;
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}
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}
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void EnableListing (void)
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/* Enable output of lines to the listing */
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{
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if (SB_GetLen (&ListingName) > 0) {
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/* If we're about to enable the listing, do this for the current line
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* also, so we will see the source line that did this.
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*/
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if (ListingEnabled++ == 0) {
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LineCur->Output = 1;
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}
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}
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}
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void DisableListing (void)
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/* Disable output of lines to the listing */
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{
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if (SB_GetLen (&ListingName) > 0) {
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if (ListingEnabled == 0) {
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/* Cannot switch the listing off once more */
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Error ("Counter underflow");
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} else {
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--ListingEnabled;
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}
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}
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}
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void SetListBytes (int Bytes)
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/* Set the maximum number of bytes listed for one line */
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{
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if (Bytes < 0) {
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Bytes = 0; /* Encode "unlimited" as zero */
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}
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ListBytes = Bytes;
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}
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void InitListingLine (void)
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/* Initialize the current listing line */
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{
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if (SB_GetLen (&ListingName) > 0) {
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/* Make the last loaded line the current line */
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/* ###### This code is a hack! We really need to do it right
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* as soon as we know, how:-(
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*/
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if (LineCur && LineCur->Next && LineCur->Next != LineLast) {
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ListLine* L = LineCur;
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do {
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L = L->Next;
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/* Set the values for this line */
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CHECK (L != 0);
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L->PC = GetPC ();
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L->Reloc = GetRelocMode ();
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L->Output = (ListingEnabled > 0);
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L->ListBytes = (unsigned char) ListBytes;
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} while (L->Next != LineLast);
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}
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LineCur = LineLast;
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/* Set the values for this line */
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CHECK (LineCur != 0);
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LineCur->PC = GetPC ();
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LineCur->Reloc = GetRelocMode ();
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LineCur->Output = (ListingEnabled > 0);
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LineCur->ListBytes = (unsigned char) ListBytes;
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}
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}
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static char* AddHex (char* S, unsigned Val)
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/* Add a hex byte in ASCII to the given string and return the new pointer */
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{
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static const char HexTab [16] = {
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'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
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};
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*S++ = HexTab [(Val >> 4) & 0x0F];
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*S++ = HexTab [Val & 0x0F];
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return S;
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}
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static void PrintPageHeader (FILE* F, const ListLine* L)
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/* Print the header for a new page. It is assumed that the given line is the
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* last line of the previous page.
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*/
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{
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/* Gte a pointer to the current input file */
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const StrBuf* CurFile = GetFileName (L->File);
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/* Print the header on the new page */
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fprintf (F,
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"ca65 V%s - %s\n"
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"Main file : %s\n"
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"Current file: %.*s\n"
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"\n",
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GetVersionAsString (), Copyright,
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InFile,
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(int) SB_GetLen (CurFile), SB_GetConstBuf (CurFile));
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/* Count pages, reset lines */
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++PageNumber;
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PageLines = 4;
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}
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static void PrintLine (FILE* F, const char* Header, const char* Line, const ListLine* L)
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/* Print one line to the listing file, adding a newline and counting lines */
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{
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/* Print the given line */
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fprintf (F, "%s%s\n", Header, Line);
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/* Increment the current line */
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++PageLines;
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/* Switch to a new page if needed. Do not switch, if the current line is
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* the last one, to avoid pages that consist of just the header.
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*/
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if (PageLength > 0 && PageLines >= PageLength && L->Next != 0) {
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/* Do a formfeed */
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putc ('\f', F);
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/* Print the header on the new page */
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PrintPageHeader (F, L);
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}
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}
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static char* AddMult (char* S, char C, unsigned Count)
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/* Add multiple instances of character C to S, return updated S. */
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{
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memset (S, C, Count);
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return S + Count;
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}
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static char* MakeLineHeader (char* H, const ListLine* L)
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/* Prepare the line header */
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{
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char Mode;
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char Depth;
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/* Setup the PC mode */
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Mode = (L->Reloc)? 'r' : ' ';
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/* Set up the include depth */
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Depth = (L->Depth < 10)? L->Depth + '0' : '+';
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/* Format the line */
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sprintf (H, "%06lX%c %c", L->PC, Mode, Depth);
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memset (H+9, ' ', LINE_HEADER_LEN-9);
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/* Return the buffer */
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return H;
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}
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void CreateListing (void)
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/* Create the listing */
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{
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FILE* F;
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Fragment* Frag;
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ListLine* L;
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char HeaderBuf [LINE_HEADER_LEN+1];
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/* Open the real listing file */
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F = fopen (SB_GetConstBuf (&ListingName), "w");
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if (F == 0) {
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Fatal ("Cannot open listing file `%s': %s",
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SB_GetConstBuf (&ListingName),
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strerror (errno));
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}
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/* Reset variables, print the header for the first page */
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PageNumber = 0;
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PrintPageHeader (F, LineList);
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/* Terminate the header buffer. The last byte will never get overwritten */
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HeaderBuf [LINE_HEADER_LEN] = '\0';
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/* Walk through all listing lines */
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L = LineList;
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while (L) {
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char* Buf;
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char* B;
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unsigned Count;
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unsigned I;
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char* Line;
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/* If we should not output this line, go to the next */
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if (L->Output == 0) {
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L = L->Next;
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continue;
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}
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/* If we don't have a fragment list for this line, things are easy */
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if (L->FragList == 0) {
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PrintLine (F, MakeLineHeader (HeaderBuf, L), L->Line, L);
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L = L->Next;
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continue;
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}
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/* Count the number of bytes in the complete fragment list */
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Count = 0;
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Frag = L->FragList;
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while (Frag) {
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Count += Frag->Len;
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Frag = Frag->LineList;
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}
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/* Allocate memory for the given number of bytes */
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Buf = xmalloc (Count*2+1);
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/* Copy an ASCII representation of the bytes into the buffer */
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B = Buf;
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Frag = L->FragList;
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while (Frag) {
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/* Write data depending on the type */
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switch (Frag->Type) {
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case FRAG_LITERAL:
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for (I = 0; I < Frag->Len; ++I) {
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B = AddHex (B, Frag->V.Data[I]);
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}
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break;
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case FRAG_EXPR:
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case FRAG_SEXPR:
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B = AddMult (B, 'r', Frag->Len*2);
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break;
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case FRAG_FILL:
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B = AddMult (B, 'x', Frag->Len*2);
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break;
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default:
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Internal ("Invalid fragment type: %u", Frag->Type);
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}
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/* Next fragment */
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Frag = Frag->LineList;
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}
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/* Limit the number of bytes actually printed */
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if (L->ListBytes != 0) {
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/* Not unlimited */
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if (Count > L->ListBytes) {
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Count = L->ListBytes;
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}
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}
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/* Output the data. The format of a listing line is:
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*
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* PPPPPPm I 11 22 33 44
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*
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* where
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*
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* PPPPPP is the PC
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* m is the mode ('r' or empty)
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* I is the include level
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* 11 .. are code or data bytes
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*/
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Line = L->Line;
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B = Buf;
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while (Count) {
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unsigned Chunk;
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char* P;
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/* Prepare the line header */
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MakeLineHeader (HeaderBuf, L);
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/* Get the number of bytes for the next line */
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Chunk = Count;
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if (Chunk > 4) {
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Chunk = 4;
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}
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Count -= Chunk;
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/* Increment the program counter. Since we don't need the PC stored
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* in the LineList object for anything else, just increment this
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* variable.
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*/
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L->PC += Chunk;
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/* Copy the bytes into the line */
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P = HeaderBuf + 11;
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for (I = 0; I < Chunk; ++I) {
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*P++ = *B++;
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*P++ = *B++;
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*P++ = ' ';
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}
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/* Output this line */
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PrintLine (F, HeaderBuf, Line, L);
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/* Don't output a line twice */
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Line = "";
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}
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/* Delete the temporary buffer */
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xfree (Buf);
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/* Next line */
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L = L->Next;
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}
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/* Close the listing file */
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(void) fclose (F);
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}
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