Initial revision

util/misc/convert.c

@@ -0,0 +1,87 @@
+#ifndef NORCSID
+static char rcsid[] = "$Header$";
+#endif
+
+/*	This program converts either human-readable or compact EM
+	assembly code to calls of the procedure-interface.
+	It must be linked with two libraries:
+	- a library to read EM code, according to read_em(3)
+	- a library implementing the em_code(3) interface.
+	Thus, this program could serve as an EM_encoder, an
+	EM_decoder, or some code generator, depending on how it is
+	linked.
+*/
+
+#include	<stdio.h>
+#include        <em_pseu.h>
+#include	<em_mnem.h>
+#include        <em_spec.h>
+#include        <em_flag.h>
+#include        <em_ptyp.h>
+#include	<em.h>
+#include	<em_comp.h>
+
+char *filename;			/* Name of input file */
+int errors;			/* Number of errors */
+
+main(argc,argv)
+	char **argv;
+{
+	struct e_instr *EM_getinstr();
+	register struct e_instr *p;
+	register struct e_args *ap;
+
+	if (argc >= 2) {
+		filename = argv[1];
+	}
+	else	filename = 0;
+	if (!EM_open(filename)) {
+		fatal(EM_error);
+	}
+	p = EM_getinstr();
+	C_init((arith) EM_wordsize, (arith) EM_pointersize);
+	if (argc >= 3) {
+		if (!C_open(argv[2])) {
+			fatal("C_open failed");
+		}
+	}
+	else	if (!C_open( (char *) 0)) fatal("C_open failed");
+	C_magic();
+	while (p) {
+		if (p->em_type == EM_FATAL) {
+			fatal("EM_getinstr: %s", EM_error);
+		}
+		if (p->em_type == EM_ERROR) {
+			error("EM_getinstr: %s", EM_error);
+			continue;
+		}
+		if (!EM_mkcalls(p)) {
+			error("EM_mkcalls: %s", EM_error);
+		}
+		p = EM_getinstr();
+	}
+	C_close();
+	EM_close();
+	return errors ? 1 : 0;
+}
+
+/* VARARGS */
+error(s,a1,a2,a3,a4)
+	char *s;
+{
+	fprintf(stderr,
+		"%s, line %d: ",
+		filename ? filename : "standard input",
+		EM_lineno);
+	fprintf(stderr,s,a1,a2,a3,a4);
+	putc('\n', stderr);
+	errors++;
+}
+
+/* VARARGS */
+fatal(s,a1,a2,a3,a4)
+	char *s;
+{
+	error(s,a1,a2,a3,a4);
+	exit(1);
+}