451 lines
9 KiB
C
451 lines
9 KiB
C
/* $Header$ */
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/*
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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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/* makecalls: expand a datastructure as delivered by "EM_getline"
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into calls to the procedural interface.
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Exported routine:
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C_out
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*/
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#define CODE_EXPANDER
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#define EXPORT
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#define PRIVATE static
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#include <em_spec.h>
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#include <em_mnem.h>
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#include <em_pseu.h>
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#include <em_flag.h>
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#include "em_ptyp.h"
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#include <em.h>
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#include <em_comp.h>
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#include <assert.h>
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extern char em_flag[]; /* One per EM instruction: indicates parameter kind */
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extern short em_ptyp[]; /* One per parameter kind: indicates parameter type */
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static char *C_error;
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char *C_tmpdir;
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static int listtype = 0; /* indicates pseudo when generating code for
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variable length argument lists
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(only for MES)
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*/
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#ifdef CHECKING
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/* c_getarg: Check the argument indicated by "args".
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The argument must be of a type allowed by "typset".
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Return a pointer to the next argument.
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*/
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PRIVATE
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checkarg(arg, typset)
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register struct e_arg *arg;
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{
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if (((!typset) && arg->ema_argtype) ||
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((!arg->ema_argtype) && typset)) {
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/* End of arguments expected, but there are more, or
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an argument expected, but there is none
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*/
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C_error = "Illegal number of parameters";
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return 0;
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}
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if (!(arg->ema_argtype & typset)) {
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/* Type error */
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C_error = "Illegal parameter type";
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return 0;
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}
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return 1;
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}
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#else not CHECKING
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#define checkarg(arg, x) 1
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#endif CHECKING
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/* EM_doinstr: An EM instruction
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*/
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PRIVATE
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EM_doinstr(p)
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register struct e_instr *p;
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{
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register int parametertype; /* parametertype of the instruction */
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parametertype = em_flag[p->em_opcode-sp_fmnem] & EM_PAR;
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#ifdef CHECKING
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if (parametertype != PAR_NO && parametertype != PAR_W) {
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if (p->em_argtype == 0) {
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C_error = "Illegal number of parameters";
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return;
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}
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}
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#endif CHECKING
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switch(parametertype) {
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case PAR_NO:
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break;
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default:
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if (! checkarg(&(p->em_arg), em_ptyp[parametertype])) {
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return;
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}
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break;
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case PAR_W:
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if (p->em_argtype != 0) {
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if (! checkarg(&(p->em_arg), cst_ptyp)) return;
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}
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else {
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#include "C_mnem_narg"
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return;
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}
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break;
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}
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#include "C_mnem"
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}
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#ifdef ____
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PRIVATE
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EM_dopseudo(p)
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register struct e_instr *p;
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{
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switch(p->em_opcode) {
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case ps_exc: {
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C_exc(p->em_exc1, p->em_exc2);
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break;
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}
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case ps_hol: {
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if (! checkarg(&(p->em_arg), par_ptyp)) break;
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switch(p->em_argtype) {
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case cst_ptyp:
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C_hol_cst(EM_holsize,
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p->em_cst,
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EM_holinit);
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break;
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case ico_ptyp:
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C_hol_icon(EM_holsize,
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p->em_string,
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p->em_size,
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EM_holinit);
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break;
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case uco_ptyp:
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C_hol_ucon(EM_holsize,
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p->em_string,
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p->em_size,
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EM_holinit);
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break;
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case fco_ptyp:
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C_hol_fcon(EM_holsize,
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p->em_string,
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p->em_size,
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EM_holinit);
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break;
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case sof_ptyp:
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C_hol_dnam(EM_holsize,
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p->em_dnam,
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p->em_off,
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EM_holinit);
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break;
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case nof_ptyp:
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C_hol_dlb(EM_holsize,
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p->em_dlb,
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p->em_off,
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EM_holinit);
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break;
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case ilb_ptyp:
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C_hol_ilb(EM_holsize,
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p->em_ilb,
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EM_holinit);
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break;
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case pro_ptyp:
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C_hol_pnam(EM_holsize,
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p->em_pnam,
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EM_holinit);
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break;
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default:
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C_error = "Illegal parameter type";
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break;
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}
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break;
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}
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case ps_bss: {
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if (! checkarg(&(p->em_arg), par_ptyp)) break;
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switch(p->em_argtype) {
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case cst_ptyp:
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C_bss_cst(EM_bsssize,
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p->em_cst,
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EM_bssinit);
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break;
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case ico_ptyp:
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C_bss_icon(EM_bsssize,
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p->em_string,
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p->em_size,
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EM_bssinit);
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break;
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case uco_ptyp:
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C_bss_ucon(EM_bsssize,
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p->em_string,
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p->em_size,
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EM_bssinit);
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break;
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case fco_ptyp:
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C_bss_fcon(EM_bsssize,
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p->em_string,
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p->em_size,
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EM_bssinit);
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break;
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case sof_ptyp:
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C_bss_dnam(EM_bsssize,
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p->em_dnam,
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p->em_off,
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EM_bssinit);
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break;
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case nof_ptyp:
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C_bss_dlb(EM_bsssize,
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p->em_dlb,
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p->em_off,
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EM_bssinit);
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break;
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case ilb_ptyp:
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C_bss_ilb(EM_bsssize,
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p->em_ilb,
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EM_bssinit);
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break;
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case pro_ptyp:
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C_bss_pnam(EM_bsssize,
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p->em_pnam,
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EM_bssinit);
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break;
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default:
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C_error = "Illegal parameter type";
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break;
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}
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break;
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}
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case ps_end:
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if (p->em_argtype != 0) {
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if (! checkarg(&(p->em_arg), cst_ptyp)) break;
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C_end(p->em_cst);
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break;
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}
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C_end_narg();
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break;
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case ps_exa:
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case ps_ina:
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if (! checkarg(&(p->em_arg), lab_ptyp)) break;
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if (p->em_argtype == nof_ptyp) {
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if (p->em_opcode == ps_exa) {
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C_exa_dlb(p->em_dlb);
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}
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else C_ina_dlb(p->em_dlb);
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break;
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}
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if (p->em_opcode == ps_exa) {
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C_exa_dnam(p->em_dnam);
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}
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else C_ina_dnam(p->em_dnam);
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break;
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case ps_exp:
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if (! checkarg(&(p->em_arg), pro_ptyp)) break;
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C_exp(p->em_pnam);
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break;
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case ps_inp:
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if (! checkarg(&(p->em_arg), pro_ptyp)) break;
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C_inp(p->em_pnam);
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break;
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case ps_pro:
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if (! checkarg(&(p->em_arg), pro_ptyp)) break;
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if (p->em_nlocals >= 0) {
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C_pro(p->em_pnam, p->em_nlocals);
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}
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else C_pro_narg(p->em_pnam);
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break;
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case ps_con:
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if (! checkarg(&(p->em_arg), val_ptyp)) break;
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switch(p->em_argtype) {
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case ilb_ptyp:
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C_con_ilb(p->em_ilb);
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break;
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case nof_ptyp:
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C_con_dlb(p->em_dlb, p->em_off);
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break;
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case sof_ptyp:
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C_con_dnam(p->em_dnam, p->em_off);
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break;
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case cst_ptyp:
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C_con_cst(p->em_cst);
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break;
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case pro_ptyp:
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C_con_pnam(p->em_pnam);
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break;
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case str_ptyp:
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C_con_scon(p->em_string, p->em_size);
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break;
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case ico_ptyp:
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C_con_icon(p->em_string, p->em_size);
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break;
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case uco_ptyp:
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C_con_ucon(p->em_string, p->em_size);
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break;
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case fco_ptyp:
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C_con_fcon(p->em_string, p->em_size);
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break;
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default:
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C_error = "Illegal argument type";
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return;
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}
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break;
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case ps_rom:
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if (! checkarg(&(p->em_arg), val_ptyp)) break;
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switch(p->em_argtype) {
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case ilb_ptyp:
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C_rom_ilb(p->em_ilb);
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break;
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case nof_ptyp:
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C_rom_dlb(p->em_dlb, p->em_off);
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break;
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case sof_ptyp:
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C_rom_dnam(p->em_dnam, p->em_off);
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break;
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case cst_ptyp:
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C_rom_cst(p->em_cst);
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break;
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case pro_ptyp:
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C_rom_pnam(p->em_pnam);
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break;
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case str_ptyp:
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C_rom_scon(p->em_string, p->em_size);
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break;
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case ico_ptyp:
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C_rom_icon(p->em_string, p->em_size);
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break;
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case uco_ptyp:
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C_rom_ucon(p->em_string, p->em_size);
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break;
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case fco_ptyp:
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C_rom_fcon(p->em_string, p->em_size);
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break;
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default:
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C_error = "Illegal argument type";
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return;
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}
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break;
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default:
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C_error = "Illegal pseudo instruction";
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break;
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}
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}
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#endif
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PRIVATE
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EM_docon(p)
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register struct e_instr *p;
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{
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checkarg(&(p->em_arg), val_ptyp);
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switch(p->em_argtype) {
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case ilb_ptyp:
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C_ilb(p->em_ilb);
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break;
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case nof_ptyp:
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C_dlb(p->em_dlb, p->em_off);
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break;
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case sof_ptyp:
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C_dnam(p->em_dnam, p->em_off);
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break;
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case cst_ptyp:
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C_cst(p->em_cst);
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break;
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case pro_ptyp:
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C_pnam(p->em_pnam);
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break;
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case str_ptyp:
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C_scon(p->em_string, p->em_size);
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break;
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case ico_ptyp:
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C_icon(p->em_string, p->em_size);
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break;
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case uco_ptyp:
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C_ucon(p->em_string, p->em_size);
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break;
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case fco_ptyp:
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C_fcon(p->em_string, p->em_size);
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break;
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default:
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C_error = "Illegal argument type";
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break;
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}
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}
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PRIVATE
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EM_dostartmes(p)
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register struct e_instr *p;
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{
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if (listtype) {
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C_error = "Message not ended";
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return;
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}
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if (! checkarg(&(p->em_arg), cst_ptyp)) return;
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C_mes_begin((int) (p->em_cst));
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listtype = ps_mes;
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}
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EXPORT int
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C_out(line)
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register struct e_instr *line;
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{
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#ifdef CHECKING
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if (listtype && line->em_type != EM_MESARG && line->em_type != EM_ENDMES) {
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C_error = "Message not ended";
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return 0;
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}
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#endif CHECKING
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C_error = 0;
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switch(line->em_type) {
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default:
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C_error = "Illegal EM line";
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break;
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case EM_MNEM:
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/* normal instruction */
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EM_doinstr(line);
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break;
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case EM_DEFILB:
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/* defining occurrence of an instruction label */
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C_df_ilb(line->em_ilb);
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break;
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#ifdef ____
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case EM_DEFDLB:
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/* defining occurrence of a global data label */
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C_df_dlb(line->em_dlb);
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break;
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case EM_DEFDNAM:
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/* defining occurrence of a non-numeric data label */
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C_df_dnam(line->em_dnam);
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break;
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case EM_PSEU:
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/* pseudo */
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EM_dopseudo(line);
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break;
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#endif
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case EM_STARTMES:
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/* start of a MES pseudo */
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EM_dostartmes(line);
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break;
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case EM_MESARG:
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case EM_ENDMES:
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#ifdef CHECKING
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if (!listtype) {
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C_error = "Message not started";
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return 0;
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}
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#endif
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if (line->em_type == EM_MESARG) {
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EM_docon(line);
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break;
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}
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C_mes_end();
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listtype = 0;
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break;
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}
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if (C_error) return 0;
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return 1;
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}
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