112 lines
1.9 KiB
C
112 lines
1.9 KiB
C
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/*
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* (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
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*
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* This product is part of the Amsterdam Compiler Kit.
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*
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* Permission to use, sell, duplicate or disclose this software must be
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* obtained in writing. Requests for such permissions may be sent to
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*
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* Dr. Andrew S. Tanenbaum
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* Wiskundig Seminarium
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* Vrije Universiteit
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* Postbox 7161
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* 1007 MC Amsterdam
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* The Netherlands
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*
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*/
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/*
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* machine dependent back end routines for the Intel 8086
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*/
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con_part(sz,w) register sz; word w; {
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while (part_size % sz)
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part_size++;
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if (part_size == EM_WSIZE)
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part_flush();
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if (sz == 1) {
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w &= 0xFF;
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if (part_size)
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w <<= 8;
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part_word |= w;
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} else {
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assert(sz == 2);
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part_word = w;
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}
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part_size += sz;
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}
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con_mult(sz) word sz; {
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long l;
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if (sz != 4)
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fatal("bad icon/ucon size");
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l = atol(str);
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fprintf(codefile,"\t.word %d,%d\n",
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(int)l&0xFFFF,(int)(l>>16)&0xFFFF);
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}
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con_float() {
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register i;
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i= argval ;
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if (i!= 4 && i!= 8)
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fatal("bad fcon size");
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while ( i ) {
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fprintf(codefile," .word 0,0\n") ;
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i -=4 ;
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}
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}
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/*
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string holstr(n) word n; {
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sprintf(str,hol_off,n,holno);
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return(mystrcpy(str));
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}
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*/
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prolog(nlocals) full nlocals; {
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fprintf(codefile,"\tpush\tbp\n\tmov\tbp,sp\n");
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switch (nlocals) {
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case 4: printf("\tpush\tax\n");
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case 2: printf("\tpush\tax\n");
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case 0: break;
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default:
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printf("\tsub\tsp,%d\n",nlocals); break;
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}
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}
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mes(type) word type ; {
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int argt ;
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switch ( (int)type ) {
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case ms_ext :
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for (;;) {
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switch ( argt=getarg(
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ptyp(sp_cend)|ptyp(sp_pnam)|sym_ptyp) ) {
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case sp_cend :
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return ;
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default:
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strarg(argt) ;
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printf(".define %s\n",argstr) ;
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break ;
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}
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}
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default :
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while ( getarg(any_ptyp) != sp_cend ) ;
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break ;
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}
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}
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char *segname[] = {
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".text", /* SEGTXT */
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".data", /* SEGCON */
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".data", /* SEGROM */
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".bss" /* SEGBSS */
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};
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