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- /* $Id$ */
- /*
- * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
- * See the copyright notice in the ACK home directory, in the file "Copyright".
- */
- /*
- * C O M P A C T A S S E M B L Y L A N G U A G E G E N E R A T I O N
- *
- */
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
- #include <em_pseu.h>
- #include <em_mes.h>
- #include "../share/types.h"
- #include "ca.h"
- #include "../share/debug.h"
- #include "../share/global.h"
- #include "../share/lset.h"
- #include "../share/files.h"
- #include "../share/map.h"
- #include "../share/alloc.h"
- #include "../share/get.h"
- #include "ca_put.h"
- /* This phase transforms the Intermediate Code of the global optimizer
- * to 'standard' compact assembly language, which will be processed
- * by the code generator.
- */
- short dlength;
- dblock_p *dmap;
- char **dnames, **pnames; /* Dynamically allocated arrays of strings.
- * pnames[i] contains a pointer to the name
- * of the procedure with proc_id i.
- */
- static line_p get_ca_lines(FILE *lf, proc_p *p_out)
- {
- /* Read lines of EM text and link them.
- * Register messages are outputted immediately after the PRO.
- */
- line_p head, *pp, l;
- line_p headm, *mp;
- arg_p a;
- curinp = lf; /* EM input file */
- pp = &head;
- mp = &headm;
- headm = (line_p) 0;
- while (TRUE) {
- l = read_line(p_out);
- if (feof(curinp)) break;
- assert (l != (line_p) 0);
- if (INSTR(l) == ps_end && INSTR(head) != ps_pro) {
- /* Delete end pseudo after data-unit */
- oldline(l);
- break;
- }
- if (INSTR(l) == ps_mes && l->l_a.la_arg->a_a.a_offset == ms_reg) {
- /* l is a register message */
- if (l->l_a.la_arg->a_next == (arg_p) 0) {
- /* register message without arguments */
- oldline(l);
- } else {
- *mp = l;
- mp = &l->l_next;
- }
- } else {
- *pp = l;
- pp = &l->l_next;
- }
- if (INSTR(l) == ps_end) {
- break;
- }
- }
- *pp = (line_p) 0;
- if (head != (line_p) 0 && INSTR(head) == ps_pro) {
- /* append register message without arguments to list */
- l = newline(OPLIST);
- l->l_instr = ps_mes;
- a = ARG(l) = newarg(ARGOFF);
- a->a_a.a_offset = ms_reg;
- *mp = l;
- l->l_next = head->l_next;
- head->l_next = headm;
- } else {
- assert(headm == (line_p) 0);
- }
- return head;
- }
- static int makedmap(dblock_p dbl)
- {
- /* construct the dmap table */
- dblock_p d;
- int cnt;
- /* determine the length of the table */
- cnt = 0;
- for (d = dbl; d != (dblock_p) 0; d = d->d_next) cnt++;
- dmap = (dblock_p *) newmap(cnt);
- for (d = dbl; d != (dblock_p) 0; d = d->d_next) {
- assert(d->d_id <= cnt);
- dmap[d->d_id] = d;
- }
- return cnt;
- }
- static void getdnames(FILE *dumpd)
- {
- /* Read the names of the datalabels from
- * the dump file.
- */
- char str[IDL+1];
- int id;
- dnames = (char **) newmap(dlength);
- for (;;) {
- if (fscanf(dumpd,"%d %s",&id,str) == EOF) return;
- assert(id <= dlength);
- dnames[id] = (char *) newcore(strlen(str)+1);
- strcpy(dnames[id], str);
- }
- }
- static void getpnames(FILE *dumpp)
- {
- /* Read the names of the procedures from
- * the dump file.
- */
- char str[IDL+1];
- int id;
- pnames = (char **) newmap(plength);
- for (;;) {
- if (fscanf(dumpp,"%d %s",&id,str) == EOF) return;
- assert(id <= plength);
- pnames[id] = (char *) newcore(strlen(str)+1);
- strcpy(pnames[id], str);
- }
- }
- static void new_name(char **s)
- {
- static int nn = 0;
- char buf[20];
- oldcore(*s, len+1);
- buf[0] = '_';
- buf[1] = 'I';
- buf[2] = 'I';
- sprintf(&buf[3],"%d",nn);
- nn++;
- *s = (char *) newcore(strlen(buf)+1);
- strcpy(*s, buf);
- }
- static void uniq_names()
- {
- /* The names of all internal procedures and data blocks
- * are made different. As the optimizer combines several
- * modules into one, there may be name conflicts between
- * procedures or data blocks that were internal in
- * different source modules.
- */
- proc_p p;
- dblock_p d;
- for (p = fproc; p != (proc_p) 0; p = p->p_next) {
- if (!(p->p_flags1 & PF_EXTERNAL)) {
- new_name(&(pnames[p->p_id]));
- }
- }
- for (d = fdblock; d != (dblock_p) 0; d = d->d_next) {
- if (!(d->d_flags1 & DF_EXTERNAL) && dnames[d->d_id]) {
- new_name(&(dnames[d->d_id]));
- }
- }
- }
- int main(int argc, char *argv[])
- {
- /* CA does not output proctable etc. files. Instead, its
- * pname2 and dname2 arguments contain the names of the
- * dump files created by IC.
- */
- FILE *f, *f2; /* The EM input and output. */
- FILE *df, *pf; /* The dump files */
- line_p lnp;
- fproc = getptable(&pname); /* proc table */
- fdblock = getdtable(&dname); /* data block table */
- dlength = makedmap(fdblock); /* allocate dmap table */
- df = openfile(dname2,"r");
- getdnames(df);
- fclose(df);
- pf = openfile(pname2,"r");
- getpnames(pf);
- fclose(pf);
- uniq_names();
- f = openfile(lname,"r");
- f2 = stdout;
- cputmagic(f2); /* write magic number */
- while ((lnp = get_ca_lines(f,&curproc)) != (line_p) 0) {
- cputlines(lnp,f2);
- }
- fclose(f);
- fclose(f2);
- exit(0);
- }
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