100 lines
1.8 KiB
C
100 lines
1.8 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*
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*/
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/*
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* machine dependent back end routines for the Zilog Z80 (as well as Intel 8080)
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*/
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void con_part(register int sz, word w)
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{
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while (part_size % sz)
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part_size++;
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if (part_size == TEM_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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void con_mult(word sz)
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{
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if (argval != 4)
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fatal("bad icon/ucon size");
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fprintf(codefile, ".data4\t%ld\n", atol(str));
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}
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void con_float(void)
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{
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static int been_here;
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int sz = argval;
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if (sz != 4 && sz != 8) {
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fatal("bad fcon size");
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}
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if (! been_here) {
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been_here = 1;
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fprintf(stderr,"warning: dummy floating constant(s)\n");
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}
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while (sz) {
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fprintf(codefile, ".data4 0 !dummy float\n");
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sz -= 4;
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}
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}
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void prolog(full nlocals)
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{
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fprintf(codefile,"\tpush\tiy\n\tld\thl,0\n\tadd\thl,sp\n\tpush\thl\n\tpop\tiy\n");
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switch (nlocals) {
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case 8: fprintf(codefile,"\tpush\thl\n");
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case 6: fprintf(codefile,"\tpush\thl\n");
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case 4: fprintf(codefile,"\tpush\thl\n");
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case 2: fprintf(codefile,"\tpush\thl\n");
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case 0: break;
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default:
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fprintf(codefile,"\tld\thl,%d\n\tadd\thl,sp\n\tld\tsp,hl\n",-nlocals);
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break;
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}
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}
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void mes(word type)
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{
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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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fprintf(codefile,".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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".sect .text",
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".sect .data",
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".sect .rom",
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".sect .bss"
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};
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