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/* outdbg.c output routines for the Netwide Assembler to produce
* a debugging trace
*
* The Netwide Assembler is copyright (C) 1996 Simon Tatham and
* Julian Hall. All rights reserved. The software is
* redistributable under the licence given in the file "Licence"
* distributed in the NASM archive.
*/
#include "compiler.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <inttypes.h>
#include "nasm.h"
#include "nasmlib.h"
#include "outform.h"
#ifdef OF_DBG
struct Section {
struct Section *next;
int32_t number;
char *name;
} *dbgsect;
FILE *dbgf;
efunc dbgef;
struct ofmt of_dbg;
static void dbg_init(FILE * fp, efunc errfunc, ldfunc ldef, evalfunc eval)
{
(void)eval;
dbgf = fp;
dbgef = errfunc;
dbgsect = NULL;
(void)ldef;
fprintf(fp, "NASM Output format debug dump\n");
of_dbg.current_dfmt->init(&of_dbg, 0, fp, errfunc);
}
static void dbg_cleanup(int debuginfo)
{
(void)debuginfo;
of_dbg.current_dfmt->cleanup();
while (dbgsect) {
struct Section *tmp = dbgsect;
dbgsect = dbgsect->next;
nasm_free(tmp->name);
nasm_free(tmp);
}
fclose(dbgf);
}
static int32_t dbg_section_names(char *name, int pass, int *bits)
{
int seg;
/*
* We must have an initial default: let's make it 16.
*/
if (!name)
*bits = 16;
if (!name)
fprintf(dbgf, "section_name on init: returning %d\n",
seg = seg_alloc());
else {
int n = strcspn(name, " \t");
char *sname = nasm_strndup(name, n);
struct Section *s;
seg = NO_SEG;
for (s = dbgsect; s; s = s->next)
if (!strcmp(s->name, sname))
seg = s->number;
if (seg == NO_SEG) {
s = nasm_malloc(sizeof(*s));
s->name = sname;
s->number = seg = seg_alloc();
s->next = dbgsect;
dbgsect = s;
fprintf(dbgf, "section_name %s (pass %d): returning %d\n",
name, pass, seg);
}
}
return seg;
}
static void dbg_deflabel(char *name, int32_t segment, int32_t offset,
int is_global, char *special)
{
fprintf(dbgf, "deflabel %s := %08lx:%08lx %s (%d)%s%s\n",
name, segment, offset,
is_global == 2 ? "common" : is_global ? "global" : "local",
is_global, special ? ": " : "", special);
}
static void dbg_out(int32_t segto, const void *data, uint32_t type,
int32_t segment, int32_t wrt)
{
int32_t realbytes = type & OUT_SIZMASK;
int32_t ldata;
int id;
type &= OUT_TYPMASK;
fprintf(dbgf, "out to %lx, len = %ld: ", segto, realbytes);
switch (type) {
case OUT_RESERVE:
fprintf(dbgf, "reserved.\n");
break;
case OUT_RAWDATA:
fprintf(dbgf, "raw data = ");
while (realbytes--) {
id = *(uint8_t *)data;
data = (char *)data + 1;
fprintf(dbgf, "%02x ", id);
}
fprintf(dbgf, "\n");
break;
case OUT_ADDRESS:
ldata = 0; /* placate gcc */
if (realbytes == 1)
ldata = *((char *)data);
else if (realbytes == 2)
ldata = *((int16_t *)data);
else if (realbytes == 4)
ldata = *((int32_t *)data);
fprintf(dbgf, "addr %08lx (seg %08lx, wrt %08lx)\n", ldata,
segment, wrt);
break;
case OUT_REL2ADR:
fprintf(dbgf, "rel2adr %04x (seg %08lx)\n", (int)*(int16_t *)data,
segment);
break;
case OUT_REL4ADR:
fprintf(dbgf, "rel4adr %08lx (seg %08lx)\n", *(int32_t *)data,
segment);
break;
default:
fprintf(dbgf, "unknown\n");
break;
}
}
static int32_t dbg_segbase(int32_t segment)
{
return segment;
}
static int dbg_directive(char *directive, char *value, int pass)
{
fprintf(dbgf, "directive [%s] value [%s] (pass %d)\n",
directive, value, pass);
return 1;
}
static void dbg_filename(char *inname, char *outname, efunc error)
{
standard_extension(inname, outname, ".dbg", error);
}
static int dbg_set_info(enum geninfo type, char **val)
{
(void)type;
(void)val;
return 0;
}
char *types[] = {
"unknown", "label", "byte", "word", "dword", "float", "qword", "tbyte"
};
void dbgdbg_init(struct ofmt *of, void *id, FILE * fp, efunc error)
{
(void)of;
(void)id;
(void)fp;
(void)error;
fprintf(fp, " With debug info\n");
}
static void dbgdbg_cleanup(void)
{
}
static void dbgdbg_linnum(const char *lnfname, int32_t lineno, int32_t segto)
{
fprintf(dbgf, "dbglinenum %s(%ld) := %08lx\n", lnfname, lineno, segto);
}
static void dbgdbg_deflabel(char *name, int32_t segment,
int32_t offset, int is_global, char *special)
{
fprintf(dbgf, "dbglabel %s := %08lx:%08lx %s (%d)%s%s\n",
name,
segment, offset,
is_global == 2 ? "common" : is_global ? "global" : "local",
is_global, special ? ": " : "", special);
}
static void dbgdbg_define(const char *type, const char *params)
{
fprintf(dbgf, "dbgdirective [%s] value [%s]\n", type, params);
}
static void dbgdbg_output(int output_type, void *param)
{
(void)output_type;
(void)param;
}
static void dbgdbg_typevalue(int32_t type)
{
fprintf(dbgf, "new type: %s(%lX)\n",
types[TYM_TYPE(type) >> 3], TYM_ELEMENTS(type));
}
static struct dfmt debug_debug_form = {
"Trace of all info passed to debug stage",
"debug",
dbgdbg_init,
dbgdbg_linnum,
dbgdbg_deflabel,
dbgdbg_define,
dbgdbg_typevalue,
dbgdbg_output,
dbgdbg_cleanup,
};
static struct dfmt *debug_debug_arr[3] = {
&debug_debug_form,
&null_debug_form,
NULL
};
struct ofmt of_dbg = {
"Trace of all info passed to output stage",
"dbg",
NULL,
debug_debug_arr,
&null_debug_form,
NULL,
dbg_init,
dbg_set_info,
dbg_out,
dbg_deflabel,
dbg_section_names,
dbg_segbase,
dbg_directive,
dbg_filename,
dbg_cleanup
};
#endif /* OF_DBG */
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