93e01eb5d1
Old .o files stop working if they use floating point. One must recompile those files. Old files don't call libfp in the correct way, and may use symbols that I removed from libem. I don't keep old symbols in libem/flp.s, because a program that pulls both libfp and flp.s would get "multiply defined" errors in the linker. I teach mach/i80/ncg/table to use libfp by copying or adapting the patterns from mach/i86/ncg/table. I did not test all the patterns, but I did use `ack -mcpm -fp -O4` to compile examples/mandelbrot.c, then I ran it in the emulator YAZE-AG. It worked, but it was slow.
94 lines
1.6 KiB
C
94 lines
1.6 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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#ifndef NORCSID
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static char rcsid[]= "$Id$" ;
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#endif
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/*
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* machine dependent back end routines for the Intel 8080.
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*/
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#include <stdlib.h> /* atol */
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void
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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 == 2)
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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
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con_mult(sz) word sz; {
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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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#define CODE_GENERATOR
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#define IEEEFLOAT
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#define FL_MSL_AT_LOW_ADDRESS 0
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#define FL_MSW_AT_LOW_ADDRESS 0
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#define FL_MSB_AT_LOW_ADDRESS 0
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#include <con_float>
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void
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prolog(nlocals) full nlocals; {
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fprintf(codefile,"\tpush\tb\n\tlxi\th,0\n\tdad\tsp\n\tmov\tb,h\n\tmov\tc,l\n");
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switch (nlocals) {
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case 4: fprintf(codefile,"\tpush\th\n");
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case 2: fprintf(codefile,"\tpush\th\n");
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case 0: break;
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default:
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fprintf(codefile,"\tlxi\th,%d\n\tdad\tsp\n\tsphl\n",-nlocals);
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break;
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}
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}
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void
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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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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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