112 lines
2.2 KiB
C
112 lines
2.2 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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#ifndef NORCSID
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static char rcsid[] = "$Header$";
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#endif
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/* This program converts either human-readable or compact EM
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assembly code to calls of the procedure-interface.
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It must be linked with two libraries:
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- a library to read EM code, according to read_em(3)
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- a library implementing the em_code(3) interface.
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Thus, this program could serve as an EM_encoder, an
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EM_decoder, or some code generator, depending on how it is
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linked.
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*/
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#include <system.h>
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#include <em_pseu.h>
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#include <em_mnem.h>
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#include <em_spec.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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char *filename; /* Name of input file */
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char *out_file; /* Name of output file */
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int errors; /* Number of errors */
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int debug;
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extern char *C_error;
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main(argc,argv)
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char **argv;
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{
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struct e_instr buf;
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register struct e_instr *p = &buf;
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int ac;
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char **av;
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filename= 0;
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out_file= 0;
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debug= 0;
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for (ac=argc-1,av=argv+1;ac;ac--,av++)
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{
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if (av[0][0]=='-' && av[0][1]=='d' && av[0][2]==0)
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{
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debug= 1;
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continue;
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}
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if (!filename)
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{
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if (strcmp(*av, "-"))
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filename= *av;
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}
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else if (!out_file)
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{
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if (strcmp(*av, "-"))
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out_file= *av;
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}
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else
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fatal ("too many arguments");
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}
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if (!EM_open(filename)) {
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fatal(EM_error);
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}
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EM_getinstr(p);
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C_init((arith) EM_wordsize, (arith) EM_pointersize);
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if (!C_open(out_file)) {
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fatal("C_open failed");
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}
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C_magic();
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while (p->em_type != EM_EOF) {
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if (p->em_type == EM_FATAL) {
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fatal("%s", EM_error);
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}
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if (EM_error) {
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error("%s", EM_error);
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}
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if (p->em_type != EM_ERROR && !C_out(p)) {
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error("%s", C_error);
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}
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EM_getinstr(p);
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}
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C_close();
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EM_close();
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exit(errors);
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}
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/* VARARGS */
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error(s,a1,a2,a3,a4)
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char *s;
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{
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fprint(STDERR,
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"%s, line %d: ",
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filename ? filename : "standard input",
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EM_lineno);
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fprint(STDERR,s,a1,a2,a3,a4);
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fprint(STDERR, "\n");
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errors++;
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}
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/* VARARGS */
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fatal(s,a1,a2,a3,a4)
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char *s;
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{
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if (C_busy()) C_close();
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error(s,a1,a2,a3,a4);
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exit(1);
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}
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