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/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
/**********************************************************************
$Author: release $
$Date: 1998/02/04 10:43:43 $
$Revision: 1.2 $
$Log: mipsdiags.c,v $
* Revision 1.2 1998/02/04 10:43:43 release
* Changes during testing.
*
* Revision 1.1.1.1 1998/01/17 15:56:06 release
* First version to be checked into rolling release.
*
* Revision 1.3 1995/09/12 10:59:34 currie
* gcc pedanttry
*
* Revision 1.2 1995/08/16 16:06:54 currie
* Shortened some .h names
*
* Revision 1.1 1995/04/13 09:08:06 currie
* Initial revision
*
***********************************************************************/
/*****************************************************************
mipsdiags.c
Provides the routines for outputting diagnostic information, suitable for
MIPS dbx.
These diagnostics, in the absence of any documentation, have been
produced in a suck-it-and-see mode, but they are vaguely based
around the syms modules provided in the system library.
********************************************************************/
#include "config.h"
#include "cross_config.h"
#ifndef CROSS_INCLUDE
#include <symconst.h>
#else
#include CROSS_INCLUDE/symconst.h>
#endif
#include "common_types.h"
#include "symtab.h"
#include "exptypes.h"
#include "shapemacs.h"
#include "expmacs.h"
#include "exp.h"
#include "procrectypes.h"
#include "tags.h"
#include "bitsmacs.h"
#include "diagtypes.h"
#include "xalloc.h"
#include "ibinasm.h"
#include "out_ba.h"
#include "syms.h"
#include "diag_fns.h"
#include "locate.h"
#include "mipsdiags.h"
#include "diagglob.h"
#include "mark_scope.h"
#include "basicread.h"
#include "new_code.h"
#include "new_symbol.h"
extern FILE * as_file;
extern long currentfile;
/* our current fileno */
extern long mainfile;
/* default fileno for no diags or shape output */
extern long fscopefile; /* file of currect proc */
int *file_dnos; /* dense nos for files */
filename * fds;
int nofds = 0;
int szfds = 0;
void collect_files
PROTO_N ( (f) )
PROTO_T ( filename f )
{
if (nofds>=szfds) {
fds = (filename*)xrealloc(fds, (szfds+=5)*sizeof(filename));
}
fds[nofds++] = f;
}
int find_file
PROTO_N ( (f) )
PROTO_T ( char * f )
{
int i;
for(i=0; i<nofds; i++) {
if (strcmp(f, fds[i]->file.ints.chars)==0) return i;
}
return 0;
}
void symnosforfiles
PROTO_Z ()
{ /* produce symnos for all text files in compilation */
int i;
file_dnos = (int *) xcalloc (nofds, sizeof (int));
for (i = 0; i < nofds; i++) {
file_dnos[i] = new_lsym_d (fds[i]->file.ints.chars, 0, stFile, scText, (diag_type)0, i);
}
}
static void x
PROTO_N ( (i) )
PROTO_T ( int i )
{
if (i == EOF) {
failer ("can't output");
exit (EXIT_FAILURE);
};
return;
}
void stab_file
PROTO_N ( (i) )
PROTO_T ( int i )
{ /* output .file directive for file i */
int l;
if (currentfile == i)
return;
l = strlen (fds[i]->file.ints.chars);
if (as_file) {
x (fprintf (as_file, "\t.file\t%d \"%s\"\n", file_dnos[i], fds[i]->file.ints.chars));
}
out_value (file_dnos[i], ifile, l, 0);
out_data (fds[i]->file.ints.chars, l);
currentfile = i;
}
long currentlno = -1; /* the last line number output */
void stabd (findex, lno) /* output .loc directive */
long findex,
lno;
{
if (findex==currentfile && lno==currentlno) return;
stab_file (findex);
if (as_file)
x (fprintf (as_file, "\t.loc\t%d %ld\n", file_dnos[findex], lno));
out_loc (file_dnos[findex], lno);
currentlno = lno;
}
static char *lexlev = "0"; /* historic !!! */
void diagbr_open
PROTO_N ( (findex) )
PROTO_T ( long findex )
{/* block begin directive */
int symno;
stab_file (findex);
symno = new_lsym_d ((char *) 0, 0, stBlock, scText, (diag_type)0,
currentfile);
lexlev[0]++;
if (as_file)
x (fprintf (as_file, "\t.bgnb\t%d\n", symno));
out_ent (symno, ibgnb, 0);
}
void diagbr_close
PROTO_N ( (findex) )
PROTO_T ( long findex )
{/* block end directive */
int symno;
stab_file (findex);
symno = new_lsym_d ((char *) 0, 0, stEnd, scText, (diag_type)0,
currentfile);
lexlev[0]--;
if (as_file)
x (fprintf (as_file, "\t.endb\t%d\n", symno));
out_ent (symno, iendb, 0);
}
void stab_local
PROTO_N ( (nm, dt, ldid, disp, findex) )
PROTO_T ( char *nm X diag_type dt X exp ldid X long disp X long findex )
{
/* output appropriate rubbish to symbol
table to indicate the declaration of a
local identifier, nm, defined by id,
displaced by disp; findex is the index
of the file containing the declaration.
The text below gives o/p for
identifiers allocated in registers; in
fact, with current translator, none are
used by stab_local. I don't even know
whether the MIPS dbx can actually use
them. */
long fs = frame_size >> 3;
exp id = son(ldid);
short sc;
long v;
disp+=no(ldid);
again:
if (name (id) == ident_tag) {
if ((props (id) & defer_bit) == 0) {
if ((props (id) & inreg_bits) != 0) {
sc = scRegister;
v = no (id);
if (as_file)
x (fprintf (as_file, " # %s is in $%ld\n", nm, v));
}
else
if ((props (id) & infreg_bits) != 0) {
sc = scRegister;
v = (no (id) << 1) + float_register;
if (as_file)
x (fprintf (as_file, " # %s is in $f%ld\n", nm, v - float_register));
}
else {
v = ((no (id) & ~0x3f) >> 4) + (locals_offset >> 3) + disp / 8 - fs;
sc = scAbs;
if (as_file)
x (fprintf (as_file,
" # %s is in %ld($fp) == %ld($29)\n", nm,
v, v + fs));
}
IGNORE new_lsym_d (nm, v, (isparam(id))?stParam :stLocal, sc, dt, findex);
}
else {
exp sn = son (id);
long d = disp;
while (sn != nilexp) {
switch (name(sn)) {
case name_tag:
{
disp = d + no (sn);
id = son (sn);
if (isvar (id)) dt = dt->data.ptr.object;
goto again;
}
case reff_tag: {
d += no (sn);
sn = son (sn);
break;
}
case cont_tag: {
sn = son (sn);
break;
}
default:
return;
}
}
}
}
}
void output_diag
PROTO_N ( (d, proc_no, e) )
PROTO_T ( diag_info *d X int proc_no X exp e )
{
exp x;
if (d->key == DIAG_INFO_SOURCE) {
sourcemark * s = & d->data.source.beg;
int f = find_file(s->file->file.ints.chars);
stabd(f, s->line_no.nat_val.small_nat);
return;
}
if (d->key != DIAG_INFO_ID) return;
x = d->data.id_scope.access;
if (isglob(son(x)) || no(son(x))==1) return;
/* can't output global values as local names in dbx
&& not only diag use */
mark_scope(e);
if (props(e) & 0x80) {
stabd(currentfile, currentlno+1); /* don't have proper lineno */
diagbr_open(currentfile);
}
stab_local(d->data.id_scope.nme.ints.chars, d->data.id_scope.typ,
x,0,currentfile);
if (last_param(son(x))) {
stabd(currentfile, currentlno+1); /* don't have proper lineno */
}
}
void output_end_scope
PROTO_N ( (d, e) )
PROTO_T ( diag_info *d X exp e )
{
if (d->key == DIAG_INFO_SOURCE) {
sourcemark * s = & d->data.source.end;
int f = find_file(s->file->file.ints.chars);
long lno = s->line_no.nat_val.small_nat;
stabd(f, lno);
return;
}
if (d -> key == DIAG_INFO_ID && props(e) & 0x80) {
diagbr_close(currentfile);
}
}
/****************************************************************
The following procs are concerned with expressing TDF
types as dbx types. The possible circularity of types and
the vagaries of the type representation contribute to their
complication.
****************************************************************/
typedef struct {
char *n;
long v;
int st;
int sc;
diag_type s;
} tsym;
static int notsyms = 0;
static int nexttsym = 0;
static tsym * ats = (tsym *) 0;
/* used to accumulate all the type reprs arising from shapes in the
program by calling addtsym .... */
void addtsym
PROTO_N ( (n ,v, st, sc, s) )
PROTO_T ( char *n X long v X int st X int sc X diag_type s )
{
tsym * a;
if (nexttsym >= notsyms) {
ats = (tsym *) xrealloc ((char *) ats, (nexttsym + 100) * sizeof (tsym));
notsyms = nexttsym + 100;
}
a = &ats[nexttsym++];
a -> n = n;
a -> v = v;
a -> st = st;
a -> sc = sc;
a -> s = s;
return;
}
typedef struct {
diag_type sutype;
int symindex;
} shauxt;
static int noshaux = 0;
int nextshaux = 0;
shauxt * shaux = (shauxt *) 0;
/* used to remember all the indexes into the auxilliary symbol table for
all the shapes in the program */
bool eq_sutype
PROTO_N ( (a, b) )
PROTO_T ( diag_type a X diag_type b )
{
diag_field_list fa;
diag_field_list fb;
int j;
if (a==b) return 1;
if (a->key != b->key) return 0;
if (a->key != DIAG_TYPE_STRUCT && a->key != DIAG_TYPE_UNION) return 0;
if (strcmp(a->data.t_struct.nme.ints.chars, b->data.t_struct.nme.ints.chars))
return 0;
fa = a->data.t_struct.fields;
fb = b->data.t_struct.fields;
if (fa->lastused != fb->lastused) return 0;
for(j=fa->lastused-1; j>=0; j--) {
diag_field sfa = (fa->array)[j];
diag_field sfb = (fb->array)[j];
if (strcmp(sfa->field_name.ints.chars, sfb->field_name.ints.chars))
return 0;
}
return eq_shape(a->data.t_struct.tdf_shape, b->data.t_struct.tdf_shape);
}
long find_aux
PROTO_N ( (s) )
PROTO_T ( diag_type s /* struct or union shape */ )
{
/* finds the index into the auxilliary
table for type s */
int i;
for (i = 0; i < nextshaux; i++) {
if (eq_sutype(s, shaux[i].sutype) )
return shaux[i].symindex;
}
return - 1;
}
static void addaux
PROTO_N ( (s, ind) )
PROTO_T ( diag_type s X int ind )
{
/* remembers ind as index into aux table
for shape s */
shauxt * x;
if (nextshaux >= noshaux) {
shaux =
(shauxt *) xrealloc ((char *) shaux, (nextshaux + 10) * sizeof (shauxt));
}
x = &shaux[nextshaux++];
x -> sutype = s;
x -> symindex = ind;
}
static diag_tagdef ** su_diags = (diag_tagdef**)0;
static long no_of_sus = 0;
static long leng_sus = 0;
void OUTPUT_DIAG_TAGS
PROTO_Z ()
{
diag_tagdef ** di = unit_ind_diagtags;
unsigned long n = unit_no_of_diagtags;
long i;
long il = no_of_sus;
for (i=0; i<n; ++i)
{
diag_type d = di[i]->d_type;
switch (d -> key)
{
case DIAG_TYPE_STRUCT:
case DIAG_TYPE_UNION: {
int j;
for(j=0; j < il; j++) {
if (eq_sutype(d, su_diags[j]->d_type)) break;
}
if (j!=il) break;
if (no_of_sus >= leng_sus) {
su_diags = (diag_tagdef**)xrealloc(su_diags,
(leng_sus+=20)*sizeof(diag_tagdef*) );
}
su_diags[no_of_sus++] = di[i];
break;
}
default: break;
};
};
return;
}
void stab_types
PROTO_Z ()
{ /* outputs symbol table info for all
struct & union in program */
int i;
int firsts = get_sym_index (mainfile);
for (i = 0; i < no_of_sus; ++i) {/* treat struct shapes */
int j;
diag_tagdef * sc = su_diags[i];
switch (sc->d_type->key) {
case DIAG_TYPE_STRUCT: case DIAG_TYPE_UNION: {
diag_field_list fields = sc->d_type->data.t_struct.fields;
shape s = sc->d_type->data.t_struct.tdf_shape;
char * nme = sc->d_type->data.t_struct.nme.ints.chars;
addaux(sc->d_type, nexttsym+firsts);
addtsym(nme, shape_size(s)>>3, stBlock, scInfo, sc->d_type);
for(j=fields->lastused-1; j>=0; j--) {
diag_field sf = (fields->array)[j];
addtsym(sf->field_name.ints.chars, no(sf->where), stMember, scInfo, sf->field_type);
}
break;
}
default: ;
}
addtsym ("", 0, stEnd, scInfo, (diag_type)0);
}
for (i = 0; i < nexttsym; i++) {/* output accumulated type info */
tsym * t = &ats[i];
{
IGNORE new_lsym (t -> n, t -> v, t -> st, t -> sc, t->s, mainfile);
}
}
for (i = 0; i < unit_diagvar_tab.lastused; ++i) {/* associated names of types */
diag_descriptor * dd = unit_diagvar_tab.array+i;
if (dd->key == DIAG_TYPEDEF_KEY) {
IGNORE new_lsym_d(dd->data.typ.nme.ints.chars, 0, stTypedef, scInfo,
dd->data.typ.new_type, mainfile);
}
}
xfree (ats);
return;
}