1 files changed, 87 insertions, 0 deletions
diff --git a/gcc/f/runtime/libI77/sue.c b/gcc/f/runtime/libI77/sue.c
new file mode 100644
index 00000000000..8f2ea314f30
--- /dev/null
+++ b/gcc/f/runtime/libI77/sue.c
@@ -0,0 +1,87 @@
+#include "f2c.h"
+#include "fio.h"
+extern uiolen f__reclen;
+long f__recloc;
+
+#ifdef KR_headers
+c_sue(a) cilist *a;
+#else
+c_sue(cilist *a)
+#endif
+{
+	if(a->ciunit >= MXUNIT || a->ciunit < 0)
+		err(a->cierr,101,"startio");
+	f__external=f__sequential=1;
+	f__formatted=0;
+	f__curunit = &f__units[a->ciunit];
+	f__elist=a;
+	if(f__curunit->ufd==NULL && fk_open(SEQ,UNF,a->ciunit))
+		err(a->cierr,114,"sue");
+	f__cf=f__curunit->ufd;
+	if(f__curunit->ufmt) err(a->cierr,103,"sue");
+	if(!f__curunit->useek) err(a->cierr,103,"sue");
+	return(0);
+}
+#ifdef KR_headers
+integer s_rsue(a) cilist *a;
+#else
+integer s_rsue(cilist *a)
+#endif
+{
+	int n;
+	if(f__init != 1) f_init();
+	f__init = 3;
+	f__reading=1;
+	if(n=c_sue(a)) return(n);
+	f__recpos=0;
+	if(f__curunit->uwrt && f__nowreading(f__curunit))
+		err(a->cierr, errno, "read start");
+	if(fread((char *)&f__reclen,sizeof(uiolen),1,f__cf)
+		!= 1)
+	{	if(feof(f__cf))
+		{	f__curunit->uend = 1;
+			err(a->ciend, EOF, "start");
+		}
+		clearerr(f__cf);
+		err(a->cierr, errno, "start");
+	}
+	return(0);
+}
+#ifdef KR_headers
+integer s_wsue(a) cilist *a;
+#else
+integer s_wsue(cilist *a)
+#endif
+{
+	int n;
+	if(f__init != 1) f_init();
+	f__init = 3;
+	if(n=c_sue(a)) return(n);
+	f__reading=0;
+	f__reclen=0;
+	if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit))
+		err(a->cierr, errno, "write start");
+	f__recloc=ftell(f__cf);
+	(void) fseek(f__cf,(long)sizeof(uiolen),SEEK_CUR);
+	return(0);
+}
+integer e_wsue(Void)
+{	long loc;
+	f__init = 1;
+	fwrite((char *)&f__reclen,sizeof(uiolen),1,f__cf);
+#ifdef ALWAYS_FLUSH
+	if (fflush(f__cf))
+		err(f__elist->cierr, errno, "write end");
+#endif
+	loc=ftell(f__cf);
+	fseek(f__cf,f__recloc,SEEK_SET);
+	fwrite((char *)&f__reclen,sizeof(uiolen),1,f__cf);
+	fseek(f__cf,loc,SEEK_SET);
+	return(0);
+}
+integer e_rsue(Void)
+{
+	f__init = 1;
+	(void) fseek(f__cf,(long)(f__reclen-f__recpos+sizeof(uiolen)),SEEK_CUR);
+	return(0);
+}