Ok here is the mvme88k userland, minus a few important pieces.

as, ld change need to be merged. It is known that shared libraries and C++
do not work.
If anyone wants to step forward and take over the mvme88k port please do.
It was dumped on me when the original developer, Nivas, left his previous
job and started a new one.

I am trying to get the port in a shape that someone could take over.

1 files changed, 112 insertions, 0 deletions

diff --git a/lib/csu/mvme88k/crt0.c b/lib/csu/mvme88k/crt0.c
new file mode 100644
index 00000000000..4bc4f00573c
--- /dev/null
+++ b/lib/csu/mvme88k/crt0.c
@@ -0,0 +1,112 @@
+/*   
+ *   Mach Operating System
+ *   Copyright (c) 1991, 1992 Carnegie Mellon University
+ *   Copyright (c) 1991, 1992 Omron Corporation
+ *   All Rights Reserved.
+ *   
+ *   Permission to use, copy, modify and distribute this software and its
+ *   documentation is hereby granted, provided that both the copyright
+ *   notice and this permission notice appear in all copies of the
+ *   software, derivative works or modified versions, and any portions
+ *   thereof, and that both notices appear in supporting documentation.
+ *   
+ *   CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ *   CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ *   ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *   
+ *   Carnegie Mellon requests users of this software to return to
+ *   
+ *    Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *    School of Computer Science
+ *    Carnegie Mellon University
+ *    Pittsburgh PA 15213-3890
+ *   
+ *   any improvements or extensions that they make and grant Carnegie Mellon 
+ *   the rights to redistribute these changes.
+ */
+
+/* 
+ *   Author :   Jeffrey Friedl
+ *   Created:   July 1992
+ *   Standalone crt0.
+ */
+
+/*
+ * GCCisms used:
+ * 	A "volatile void fcn()" is one that never returns.
+ *	register var asm("r1"): variable VAR is raw access to named register.
+ */
+
+/*
+ * When a program begins, r31 points to info passed from the kernel.
+ *
+ * The following shows the memory to which r31 points (think "int *r31;"),
+ * and how we derive argc, argv, and envp from that:
+ *
+ *    +-------------------+ <-------------------------------------- r31
+ *    | ARGC              | <- argc = r31[0];
+ *    +-------------------+ <- argv = &r31[1];
+ *    | &(argument #1)    |
+ *    +-------------------+
+ *    | &(argument #2)    |
+ *     -  - - - - - - -  - 
+ *    | &(argument #ARGC) |
+ *    +-------------------+
+ *    | 0x00000000        | <- end-of-ARGV-list marker (redundant information).
+ *    +-------------------+ <- environ = envp =  &argv[argc+1];
+ *    | &(env. var. #1)   |
+ *    +-------------------+
+ *    | &(env. var. #2)   |
+ *     -  - - - - - - -  - 
+ *    | &(env. var. #N)   |
+ *    +-------------------+
+ *    | 0x00000000        | <- end-of-ENVP-list marker (not redundant!).
+ *    +-------------------+
+ *
+ * We use 'start:' to grab r31 and and call real_start(argc, argv, envp).
+ * We must do this since the function prologue makes finding the initial
+ * r31 difficult in C.
+ */
+
+#include <stdlib.h>
+
+#include "common.h"
+
+asm("       text                ");
+asm("       align  4            ");
+asm("start: global start        ");
+asm("       ld     r2, r31,   0 "); /* First arg to real_start: argc */
+asm("       addu   r3, r31,   4 "); /* Second arg to real_start: argv */
+asm("       lda    r4,  r3  [r2]"); /* Third arg to real_start: envp, but.... */
+asm("       addu   r4,  r4,   4 "); /*   ... don't forget to skip past marker */
+asm("       br.n   ___crt0_real_start");
+asm("       subu   r31, r31, 32 ");
+
+#ifdef DYNAMIC
+extern struct _dynamic	_DYNAMIC;
+struct _dynamic	*___pdynamic = &_DYNAMIC;
+#endif
+
+/* static */ void volatile
+__crt0_real_start(int argc, char *argv[], char *envp[])
+{
+	register char *ap;
+	volatile int a = 0;
+	extern int minbrk asm ("minbrk");
+	extern int end;
+
+	minbrk = (int)&end;
+	environ = envp; /* environ is for the user that can't get at 'envp' */
+
+	if (ap = argv[0])
+		if ((__progname = _strrchr(ap, '/')) == NULL)
+			__progname = ap;
+		else
+			++__progname;
+asm ("__callmain:");		/* Defined for the benefit of debuggers */
+	exit(main(argc, argv, environ));
+
+    /*NOTREACHED*/
+}
+
+#include "common.c"