416 lines
6.9 KiB
C
416 lines
6.9 KiB
C
/* S H O W . C */
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/* This program can be used to make the output of the 'cf' pass
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* human readable. It will display either the procedure table,
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* the datablock table, the basic block table or the EM text,
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* depending on the flag that is passed as first argument.
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*/
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#include <stdio.h>
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#include "../../../h/em_spec.h"
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#include "../../../h/em_flag.h"
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#include "../../../h/em_pseu.h"
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#include "../share/types.h"
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#include "../share/def.h"
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#include "../share/global.h"
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#define BMASK 0377
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extern byte em_flag[];
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#define space1() printf(" ")
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char format[] = " %-11s%d\n";
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char lformat[] = " %-11s%D\n";
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char sformat[] = " %-10s%s\n";
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char dformat[] = " %-11s%d\n";
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char oformat[] = " %-11s%D\n";
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FILE *f; /* input file */
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#define getbyte() getc(f)
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short getshort()
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{
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register n;
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n = getbyte();
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n |= getbyte() << 8;
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return n;
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}
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int getint()
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{
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/* Read an integer from the input file. This routine is
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* only used when reading a bitvector-set. We expect an
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* integer to be either a short or a long.
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*/
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if (sizeof(int) == sizeof(short)) {
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return getshort();
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} else {
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return getoff();
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}
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}
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offset getoff()
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{
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register offset n;
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n = (unsigned) getshort();
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n |= ((offset) getshort() ) << 16;
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return n;
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}
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/* VARARGS 1 */
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error(s,a) char *s,*a; {
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fprintf(stderr,"error");
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fprintf(stderr,": ");
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fprintf(stderr,s,a);
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fprintf(stderr,"\n");
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abort();
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exit(-1);
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}
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main(argc, argv)
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int argc;
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char *argv[];
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{
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if (argc != 3 || argv[1][0] != '-') {
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error("usage: %s -[ldpbc] filename",argv[0]);
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}
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if ((f = fopen(argv[2], "r")) == NULL) {
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error("cannot open %s", argv[2]);
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}
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switch(argv[1][1]) {
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case 'l':
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showl();
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break;
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case 'd':
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showd();
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break;
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case 'p':
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showp();
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break;
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case 'b':
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showb();
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break;
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case 'c':
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showc();
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break;
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default:
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error("bad flag");
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}
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fclose(f);
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}
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showcset()
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{
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/* print a compact (bitvector) set */
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short size;
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register short i,j;
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int w, mask;
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size = getshort();
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/* # significant bits in bitvector */
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i = 1;
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printf(" { ");
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if (size == 0) {
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printf("}\n");
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return;
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}
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for (;;) {
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w = getint();
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mask = 1 ;
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for (j = 1; j <= WORDLENGTH; j++) {
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if (w & mask) {
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printf("%d ",i);
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}
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if (i++ == size) {
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printf ("}\n");
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return;
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}
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mask <<= 1;
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}
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}
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}
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showp()
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{
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byte b;
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short n;
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short all;
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printf("total number of procs: %d\n\n",getshort());
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all = getshort();
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while (TRUE) {
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n = getshort();
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if (feof(f)) break;
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printf("PROC\n");
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printf(format,"id =",n);
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printf(format,"flags1 =",b = getbyte());
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if (b & PF_BODYSEEN) {
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printf(format,"# labels =",getshort());
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printf(lformat,"# locals =",getoff());
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printf(lformat,"# formals =",getoff());
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if (all == 1) {
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printf(" changed ="); showcset();
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printf(format,"c_flags =",getshort());
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printf(" used ="); showcset();
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printf(format,"u_flags =",getshort());
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printf(" calling ="); showcset();
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}
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} else {
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printf(" body not available\n");
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}
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}
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}
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char *pseudo[] = {"hol", "bss", "rom", "con", "unknown" };
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showd()
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{
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short n;
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printf("total number of objects: %d\n\n",getshort());
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while (TRUE) {
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n = getbyte();
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if (feof(f)) break;
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switch(n) {
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case MARK_DBLOCK:
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printf("DBLOCK\n");
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printf(format,"id =",getshort());
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printf(sformat,"pseudo =",
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pseudo[(short) getbyte()]);
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printf(lformat,"size =",getoff());
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printf(format,"fragment =",getshort());
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printf(format,"flags1 =",
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(short) getbyte());
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break;
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case MARK_OBJ:
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printf(" OBJ\n");
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space1();
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printf(format,"id =",getshort());
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space1();
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printf(lformat,"size =",getoff());
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space1();
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printf(lformat,"offset =",getoff());
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break;
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case MARK_ARG:
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printf(" VALUE\n");
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space1();
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printf(lformat,"offset =",getoff());
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break;
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}
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}
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}
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/* The mnemonics of the EM instructions and pseudos */
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extern char em_mnem[];
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extern char em_pseu[];
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char lab_mnem[] = "instrlab";
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char sym_mnem[] = "datalab";
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showinstr()
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{
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short instr;
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char *s;
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instr = (short) getbyte();
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if (feof(f)) return FALSE;
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if (instr >= sp_fmnem && instr <= sp_lmnem) {
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s = &(em_mnem[(instr-sp_fmnem) *4]);
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} else {
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if (instr == op_lab) {
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s = lab_mnem;
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} else {
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if (instr == ps_sym) {
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s = sym_mnem;
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} else {
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s = &(em_pseu[(instr-sp_fpseu)*4]);
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}
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}
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}
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printf("%s",s);
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switch((short) getbyte()) {
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case OPSHORT:
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case OPOBJECT:
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printf(" %d", getshort());
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break;
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case OPPROC:
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printf(" $%d",getshort());
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break;
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case OPINSTRLAB:
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printf(" *%d",getshort());
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break;
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case OPOFFSET:
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printf(" %D", getoff());
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break;
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case OPLIST:
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arglist();
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break;
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}
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printf("\n");
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return TRUE;
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}
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showl()
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{
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while (showinstr());
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}
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arglist()
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{
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short length;
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for (;;) {
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switch((short) getbyte()) {
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case ARGOBJECT:
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printf(" %d", getshort());
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break;
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case ARGPROC:
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printf(" $%d",getshort());
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break;
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case ARGINSTRLAB:
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printf(" *%d",getshort());
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break;
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case ARGOFF:
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printf(" %D", getoff());
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break;
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case ARGICN:
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case ARGUCN:
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case ARGFCN:
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printf(" %d",getshort());
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/* Fall through !! */
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case ARGSTRING:
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length = getshort();
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putchar(' ');
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putchar('"');
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while (length--) {
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putchar(getbyte());
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}
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putchar('"');
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break;
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case ARGCEND:
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return;
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}
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}
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}
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showlset()
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{
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register short x;
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printf("{ ");
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while (x = getshort()) {
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printf("%d ",x);
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}
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printf("}\n");
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}
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showb()
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{
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/* basic block file */
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short n,m;
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while (TRUE) {
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n = getshort();
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if (feof(f)) break;
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if (n == 0) {
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printf("Declaration Unit:\n");
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printf(dformat,"#instrs =",getshort());
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printf("\n");
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continue;
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}
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printf("Control Flow Graph:\n");
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printf("number of basic blocks: %d\n",n);
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m = getshort(); /* #loops */
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while (n--) {
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printf(" BASIC BLOCK\n");
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printf(dformat,"id =",getshort());
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printf(dformat,"# instrs =",getshort());
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printf(" succ =");
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showlset();
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printf(" pred =");
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showlset();
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printf(dformat,"idom =",getshort());
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printf(" loops =");
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showlset();
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printf(dformat,"flags =",getshort());
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}
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printf("number of loops: %d\n",m);
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while (m--) {
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printf(" LOOP\n");
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printf(dformat,"id =",getshort());
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printf(dformat,"level =",getshort());
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printf(dformat,"entry =",getshort());
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printf(dformat,"end =",getshort());
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}
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printf("\n");
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}
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}
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showc()
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{
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int n,m,cnt,t;
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cnt = 1;
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while(TRUE) {
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t = getshort();
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if (feof(f)) break;
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printf("CALL %d\n",cnt++);
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printf(format,"nestlevel =",t);
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printf(format,"calling p. =",getshort());
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printf(format,"call_id =",getshort());
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printf(format,"called p. =",getshort());
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printf(format,"looplevel =",getbyte());
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printf(format,"flags =",getbyte());
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printf(format,"ratio =",getshort());
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printf(" actuals:");
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n = getshort();
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if (n == 0) {
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printf(" ---\n");
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} else {
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while (n--) {
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printf("\n");
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m = getshort();
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printf(oformat,"size =",getoff());
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printf(dformat,"inl =",getbyte());
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while (m--) {
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printf(" ");
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showinstr();
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}
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}
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}
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}
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}
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