nasm/output/outdbg.c
H. Peter Anvin fe501957c0 Portability fixes
Concentrate compiler dependencies to compiler.h; make sure compiler.h
is included first in every .c file (since some prototypes may depend
on the presence of feature request macros.)

Actually use the conditional inclusion of various functions (totally
broken in previous releases.)
2007-10-02 21:53:51 -07:00

256 lines
6.1 KiB
C

/* 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 */