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nasm/asm/listing.c
H. Peter Anvin a7b6bfca68 Sanitize the handling of segments a bit 
Make the internal handling of segment numbers just a little more
sane.  The whole use of when we have done ofmt->segbase or not is
crazy, though...

In the meantime, add a few more hacks to the dbg output format to make
it more useful.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-05-03 17:33:04 -07:00

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/* ----------------------------------------------------------------------- *
*
* Copyright 1996-2016 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for
* the specific copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ----------------------------------------------------------------------- */
/*
* listing.c listing file generator for the Netwide Assembler
*/
#include "compiler.h"
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <ctype.h>
#include "nasm.h"
#include "nasmlib.h"
#include "error.h"
#include "listing.h"
#define LIST_MAX_LEN 216 /* something sensible */
#define LIST_INDENT 40
#define LIST_HEXBIT 18
typedef struct MacroInhibit MacroInhibit;
static struct MacroInhibit {
MacroInhibit *next;
int level;
int inhibiting;
} *mistack;
static char xdigit[] = "0123456789ABCDEF";
#define HEX(a,b) (*(a)=xdigit[((b)>>4)&15],(a)[1]=xdigit[(b)&15]);
static char listline[LIST_MAX_LEN];
static bool listlinep;
static char listerror[LIST_MAX_LEN];
static char listdata[2 * LIST_INDENT]; /* we need less than that actually */
static int32_t listoffset;
static int32_t listlineno;
static int32_t listp;
static int suppress; /* for INCBIN & TIMES special cases */
static int listlevel, listlevel_e;
static FILE *listfp;
static void list_emit(void)
{
int i;
if (!listlinep && !listdata[0])
return;
fprintf(listfp, "%6"PRId32" ", listlineno);
if (listdata[0])
fprintf(listfp, "%08"PRIX32" %-*s", listoffset, LIST_HEXBIT + 1,
listdata);
else
fprintf(listfp, "%*s", LIST_HEXBIT + 10, "");
if (listlevel_e)
fprintf(listfp, "%s<%d>", (listlevel < 10 ? " " : ""),
listlevel_e);
else if (listlinep)
fprintf(listfp, " ");
if (listlinep)
fprintf(listfp, " %s", listline);
putc('\n', listfp);
listlinep = false;
listdata[0] = '\0';
if (listerror[0]) {
fprintf(listfp, "%6"PRId32" ", listlineno);
for (i = 0; i < LIST_HEXBIT; i++)
putc('*', listfp);
if (listlevel_e)
fprintf(listfp, " %s<%d>", (listlevel < 10 ? " " : ""),
listlevel_e);
else
fprintf(listfp, " ");
fprintf(listfp, " %s\n", listerror);
listerror[0] = '\0';
}
}
static void list_init(const char *fname)
{
if (!fname || fname[0] == '\0') {
listfp = NULL;
return;
}
listfp = nasm_open_write(fname, NF_TEXT);
if (!listfp) {
nasm_error(ERR_NONFATAL, "unable to open listing file `%s'",
fname);
return;
}
*listline = '\0';
listlineno = 0;
*listerror = '\0';
listp = true;
listlevel = 0;
suppress = 0;
mistack = nasm_malloc(sizeof(MacroInhibit));
mistack->next = NULL;
mistack->level = 0;
mistack->inhibiting = true;
}
static void list_cleanup(void)
{
if (!listp)
return;
while (mistack) {
MacroInhibit *temp = mistack;
mistack = temp->next;
nasm_free(temp);
}
list_emit();
fclose(listfp);
}
static void list_out(int64_t offset, char *str)
{
if (strlen(listdata) + strlen(str) > LIST_HEXBIT) {
strcat(listdata, "-");
list_emit();
}
if (!listdata[0])
listoffset = offset;
strcat(listdata, str);
}
static void list_address(int64_t offset, const char *brackets,
int64_t addr, int size)
{
char q[20];
char *r = q;
nasm_assert(size <= 8);
*r++ = brackets[0];
while (size--) {
HEX(r, addr);
addr >>= 8;
r += 2;
}
*r++ = brackets[1];
*r = '\0';
list_out(offset, q);
}
static void list_output(const struct out_data *data)
{
char q[20];
uint64_t size = data->size;
uint64_t offset = data->offset;
const uint8_t *p = data->data;
if (!listp || suppress || user_nolist)
return;
switch (data->type) {
case OUT_ZERODATA:
if (size > 16) {
snprintf(q, sizeof(q), "<zero %08"PRIX64">", size);
list_out(offset, q);
} else {
p = zero_buffer;
/* fall through */
}
case OUT_RAWDATA:
{
if (size == 0 && !listdata[0])
listoffset = data->offset;
while (size--) {
HEX(q, *p);
q[2] = '\0';
list_out(offset++, q);
p++;
}
break;
}
case OUT_ADDRESS:
list_address(offset, "[]", data->toffset, size);
break;
case OUT_SEGMENT:
q[0] = '[';
memset(q+1, 's', size << 1);
q[(size << 1)+1] = ']';
q[(size << 1)+2] = '\0';
list_out(offset, q);
offset += size;
break;
case OUT_RELADDR:
list_address(offset, "()", data->toffset, size);
break;
case OUT_RESERVE:
{
snprintf(q, sizeof(q), "<res %08"PRIX64">", size);
list_out(offset, q);
break;
}
default:
panic();
}
}
static void list_line(int type, char *line)
{
if (!listp)
return;
if (user_nolist)
return;
if (mistack && mistack->inhibiting) {
if (type == LIST_MACRO)
return;
else { /* pop the m i stack */
MacroInhibit *temp = mistack;
mistack = temp->next;
nasm_free(temp);
}
}
list_emit();
listlineno = src_get_linnum();
listlinep = true;
strncpy(listline, line, LIST_MAX_LEN - 1);
listline[LIST_MAX_LEN - 1] = '\0';
listlevel_e = listlevel;
}
static void list_uplevel(int type)
{
if (!listp)
return;
if (type == LIST_INCBIN || type == LIST_TIMES) {
suppress |= (type == LIST_INCBIN ? 1 : 2);
list_out(listoffset, type == LIST_INCBIN ? "<incbin>" : "<rept>");
return;
}
listlevel++;
if (mistack && mistack->inhibiting && type == LIST_INCLUDE) {
MacroInhibit *temp = nasm_malloc(sizeof(MacroInhibit));
temp->next = mistack;
temp->level = listlevel;
temp->inhibiting = false;
mistack = temp;
} else if (type == LIST_MACRO_NOLIST) {
MacroInhibit *temp = nasm_malloc(sizeof(MacroInhibit));
temp->next = mistack;
temp->level = listlevel;
temp->inhibiting = true;
mistack = temp;
}
}
static void list_downlevel(int type)
{
if (!listp)
return;
if (type == LIST_INCBIN || type == LIST_TIMES) {
suppress &= ~(type == LIST_INCBIN ? 1 : 2);
return;
}
listlevel--;
while (mistack && mistack->level > listlevel) {
MacroInhibit *temp = mistack;
mistack = temp->next;
nasm_free(temp);
}
}
static void list_error(int severity, const char *pfx, const char *msg)
{
if (!listfp)
return;
snprintf(listerror, sizeof listerror, "%s%s", pfx, msg);
if ((severity & ERR_MASK) >= ERR_FATAL)
list_emit();
}
static void list_set_offset(uint64_t offset)
{
listoffset = offset;
}
static const struct lfmt nasm_list = {
list_init,
list_cleanup,
list_output,
list_line,
list_uplevel,
list_downlevel,
list_error,
list_set_offset
};
const struct lfmt *lfmt = &nasm_list;
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