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authorrgrimes <rgrimes@FreeBSD.org>1993-06-12 14:58:17 +0000
committerrgrimes <rgrimes@FreeBSD.org>1993-06-12 14:58:17 +0000
commit48231afadc40013e6bfda56b04a11ee3a602598f (patch)
treeb8f2aee67be896f894d5be6f5e144303f3ecccd2 /lib/csu
downloadFreeBSD-src-48231afadc40013e6bfda56b04a11ee3a602598f.zip
FreeBSD-src-48231afadc40013e6bfda56b04a11ee3a602598f.tar.gz
Initial import, 0.1 + pk 0.2.4-B1
Diffstat (limited to 'lib/csu')
-rw-r--r--lib/csu/i386/Makefile33
-rw-r--r--lib/csu/i386/crt0.c108
2 files changed, 141 insertions, 0 deletions
diff --git a/lib/csu/i386/Makefile b/lib/csu/i386/Makefile
new file mode 100644
index 0000000..bb1c66e
--- /dev/null
+++ b/lib/csu/i386/Makefile
@@ -0,0 +1,33 @@
+# @(#)Makefile 5.6 (Berkeley) 5/22/91
+
+CFLAGS= -O -DLIBC_SCCS
+OBJS= crt0.o gcrt0.o
+CLEANFILES+= gmon.o moncrt0.o core a.out
+
+all: ${OBJS}
+
+crt0.o: crt0.c
+ ${CC} ${CFLAGS} -c -DCRT0 ${.ALLSRC}
+ ${LD} -x -r ${.TARGET}
+ mv a.out ${.TARGET}
+
+moncrt0.o: crt0.c
+ ${CC} ${CFLAGS} -c -DMCRT0 ${.ALLSRC} -o ${.TARGET}
+ ${LD} -x -r ${.TARGET}
+ mv a.out ${.TARGET}
+
+gcrt0.o: moncrt0.o gmon.o
+ ${LD} -x -r -o ${.TARGET} moncrt0.o gmon.o
+
+gmon.o: gmon.c gmon.h
+ ${CC} -c ${DEFS} ${.IMPSRC}
+ ${LD} -x -r ${.TARGET}
+ mv a.out ${.TARGET}
+
+install:
+ install -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
+ ${DESTDIR}/usr/lib
+
+depend lint tags:
+
+.include <bsd.prog.mk>
diff --git a/lib/csu/i386/crt0.c b/lib/csu/i386/crt0.c
new file mode 100644
index 0000000..363098b
--- /dev/null
+++ b/lib/csu/i386/crt0.c
@@ -0,0 +1,108 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)crt0.c 5.7 (Berkeley) 7/3/91";
+#endif /* LIBC_SCCS and not lint */
+
+
+/*
+ * C start up routine.
+ * Robert Henry, UCB, 20 Oct 81
+ *
+ * We make the following (true) assumption:
+ * 1) The only register variable that we can trust is the frame pointer,
+ * ebp, which points to the base of the kernel calling frame.
+ */
+
+char **environ = (char **)0;
+int errno = 0;
+
+asm(".text");
+asm(".long 0xc000c000");
+
+extern unsigned char etext;
+extern unsigned char eprol asm ("eprol");
+extern start() asm("start");
+extern mcount() asm ("mcount");
+
+start()
+{
+ struct kframe {
+ int kargc;
+ char *kargv[1]; /* size depends on kargc */
+ char kargstr[1]; /* size varies */
+ char kenvstr[1]; /* size varies */
+ };
+ /*
+ * ALL REGISTER VARIABLES!!!
+ */
+ register struct kframe *kfp;
+ register char **targv;
+ register char **argv;
+ extern void _mcleanup();
+
+#ifdef lint
+ kfp = 0;
+ initcode = initcode = 0;
+#else not lint
+ /* just above the saved frame pointer */
+ asm ("lea 4(%%ebp), %0" : "=r" (kfp) );
+#endif not lint
+ for (argv = targv = &kfp->kargv[0]; *targv++; /* void */)
+ /* void */ ;
+ if (targv >= (char **)(*argv))
+ --targv;
+ environ = targv;
+asm("eprol:");
+
+#ifdef MCRT0
+ atexit(_mcleanup);
+ monstartup(&eprol, &etext);
+#endif MCRT0
+ exit(main(kfp->kargc, argv, environ));
+}
+
+#ifdef CRT0
+/*
+ * null mcount and moncontrol,
+ * just in case some routine is compiled for profiling
+ */
+moncontrol(val)
+ int val;
+{
+
+}
+
+mcount() { }
+#endif CRT0
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