87 lines
1.5 KiB
C
87 lines
1.5 KiB
C
/*
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* VideoCore IV code generator for the ACK
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* © 2013 David Given
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* This file is redistributable under the terms of the 3-clause BSD license.
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* See the file 'Copying' in the root of the distribution for the full text.
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*/
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#include <stdlib.h>
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#include <limits.h>
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int framesize;
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/* Write out a constant data section. */
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con_part(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 || sz == 2) {
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w &= (sz == 1 ? 0xFF : 0xFFFF);
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w <<= 8 * part_size;
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part_word |= w;
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} else {
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assert(sz == 4);
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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(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 %s\n", 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 prolog(full nlocals)
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{
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int ss = nlocals + 8;
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fprintf(codefile, "push fp, lr\n");
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fprintf(codefile, "mov fp, sp\n");
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if (nlocals > 0)
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fprintf(codefile, "sub sp, #%d\n", nlocals);
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framesize = nlocals;
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}
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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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