1 files changed, 147 insertions, 0 deletions
diff --git a/gcc/f/runtime/libI77/iio.c b/gcc/f/runtime/libI77/iio.c
new file mode 100644
index 00000000000..680524f6c1a
--- /dev/null
+++ b/gcc/f/runtime/libI77/iio.c
@@ -0,0 +1,147 @@
+#include "f2c.h"
+#include "fio.h"
+#include "fmt.h"
+extern char *f__icptr;
+char *f__icend;
+extern icilist *f__svic;
+int f__icnum;
+extern int f__hiwater;
+z_getc(Void)
+{
+	if(f__recpos++ < f__svic->icirlen) {
+		if(f__icptr >= f__icend) err(f__svic->iciend,(EOF),"endfile");
+		return(*(unsigned char *)f__icptr++);
+		}
+	return '\n';
+}
+#ifdef KR_headers
+z_putc(c)
+#else
+z_putc(int c)
+#endif
+{
+	if(f__icptr >= f__icend) err(f__svic->icierr,110,"inwrite");
+	if(f__recpos++ < f__svic->icirlen)
+		*f__icptr++ = c;
+	else	err(f__svic->icierr,110,"recend");
+	return 0;
+}
+z_rnew(Void)
+{
+	f__icptr = f__svic->iciunit + (++f__icnum)*f__svic->icirlen;
+	f__recpos = 0;
+	f__cursor = 0;
+	f__hiwater = 0;
+	return 1;
+}
+
+ static int
+z_endp(Void)
+{
+	(*f__donewrec)();
+	return 0;
+	}
+
+#ifdef KR_headers
+c_si(a) icilist *a;
+#else
+c_si(icilist *a)
+#endif
+{
+	if (f__init & 2)
+		f__fatal (131, "I/O recursion");
+	f__init |= 2;
+	f__elist = (cilist *)a;
+	f__fmtbuf=a->icifmt;
+	if(pars_f(f__fmtbuf)<0)
+		err(a->icierr,100,"startint");
+	fmt_bg();
+	f__sequential=f__formatted=1;
+	f__external=0;
+	f__cblank=f__cplus=f__scale=0;
+	f__svic=a;
+	f__icnum=f__recpos=0;
+	f__cursor = 0;
+	f__hiwater = 0;
+	f__icptr = a->iciunit;
+	f__icend = f__icptr + a->icirlen*a->icirnum;
+	f__curunit = 0;
+	f__cf = 0;
+	return(0);
+}
+
+ int
+iw_rev(Void)
+{
+	if(f__workdone)
+		z_endp();
+	f__hiwater = f__recpos = f__cursor = 0;
+	return(f__workdone=0);
+	}
+
+#ifdef KR_headers
+integer s_rsfi(a) icilist *a;
+#else
+integer s_rsfi(icilist *a)
+#endif
+{	int n;
+	if(n=c_si(a)) return(n);
+	f__reading=1;
+	f__doed=rd_ed;
+	f__doned=rd_ned;
+	f__getn=z_getc;
+	f__dorevert = z_endp;
+	f__donewrec = z_rnew;
+	f__doend = z_endp;
+	return(0);
+}
+
+z_wnew(Void)
+{
+	if (f__recpos < f__hiwater) {
+		f__icptr += f__hiwater - f__recpos;
+		f__recpos = f__hiwater;
+		}
+	while(f__recpos++ < f__svic->icirlen)
+		*f__icptr++ = ' ';
+	f__recpos = 0;
+	f__cursor = 0;
+	f__hiwater = 0;
+	f__icnum++;
+	return 1;
+}
+#ifdef KR_headers
+integer s_wsfi(a) icilist *a;
+#else
+integer s_wsfi(icilist *a)
+#endif
+{	int n;
+	if(n=c_si(a)) return(n);
+	f__reading=0;
+	f__doed=w_ed;
+	f__doned=w_ned;
+	f__putn=z_putc;
+	f__dorevert = iw_rev;
+	f__donewrec = z_wnew;
+	f__doend = z_endp;
+	return(0);
+}
+integer e_rsfi(Void)
+{	int n;
+	f__init &= ~2;
+	n = en_fio();
+	f__fmtbuf = NULL;
+	return(n);
+}
+integer e_wsfi(Void)
+{
+	int n;
+	f__init &= ~2;
+	n = en_fio();
+	f__fmtbuf = NULL;
+	if(f__icnum >= f__svic->icirnum)
+		return(n);
+	while(f__recpos++ < f__svic->icirlen)
+		*f__icptr++ = ' ';
+	return(n);
+}