1 files changed, 123 insertions, 0 deletions
diff --git a/sys/powerpc/aim/locore32.S b/sys/powerpc/aim/locore32.S
new file mode 100644
index 000000000000..3fba703794b0
--- /dev/null
+++ b/sys/powerpc/aim/locore32.S
@@ -0,0 +1,123 @@
+
+/*-
+ * Copyright (C) 2010-2016 Nathan Whitehorn
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 TOOLS GMBH 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.
+ */
+
+#include "assym.inc"
+
+#include <sys/syscall.h>
+
+#include <machine/trap.h>
+#include <machine/param.h>
+#include <machine/spr.h>
+#include <machine/asm.h>
+#include <machine/vmparam.h>
+#include "opt_platform.h"
+
+/* Locate the per-CPU data structure */
+#define GET_CPUINFO(r)  \
+        mfsprg0  r
+
+/*
+ * Compiled KERNBASE location and the kernel load address
+ */
+        .globl  kernbase
+        .set    kernbase, KERNBASE
+
+/*
+ * Globals
+ */
+	.data
+	.align 3
+GLOBAL(__startkernel)
+	.long	begin
+GLOBAL(__endkernel)
+	.long	end
+	.align	4
+#define	TMPSTKSZ	8192		/* 8K temporary stack */
+GLOBAL(tmpstk)
+	.space	TMPSTKSZ
+
+#ifdef KDB
+#define TRAPSTKSZ       4096            /* 4k trap stack */
+GLOBAL(trapstk)
+        .space        TRAPSTKSZ
+#endif
+
+	.text
+	.globl	btext
+btext:
+
+/*
+ * Main kernel entry point.
+ */
+	.text
+	.globl	__start
+__start:
+	/* Figure out where we are */
+	bl	1f
+	.long	_DYNAMIC-.
+	.long	_GLOBAL_OFFSET_TABLE_-.
+	.long	tmpstk-.
+1:	mflr	%r30
+
+	/* Set up temporary stack pointer */
+	lwz	%r1,8(%r30)
+	add	%r1,%r1,%r30
+	addi	%r1,%r1,(8+TMPSTKSZ-40)
+
+	/* Relocate self */
+	stw	%r3,16(%r1)
+	stw	%r4,20(%r1)
+	stw	%r5,24(%r1)
+	stw	%r6,28(%r1)
+	stw	%r7,32(%r1)
+
+	lwz	%r3,0(%r30) /* _DYNAMIC in %r3 */
+	add	%r3,%r3,%r30
+	lwz	%r4,4(%r30) /* GOT pointer */
+	add	%r4,%r4,%r30
+	lwz	%r4,4(%r4)  /* got[0] is _DYNAMIC link addr */
+	subf	%r4,%r4,%r3 /* subtract to calculate relocbase */
+	bl	elf_reloc_self
+	
+	lwz	%r3,16(%r1)
+	lwz	%r4,20(%r1)
+	lwz	%r5,24(%r1)
+	lwz	%r6,28(%r1)
+	lwz	%r7,32(%r1)
+
+	/* MD setup */
+	bl	powerpc_init
+
+	/* Set stack pointer to new value and branch to mi_startup */
+	mr	%r1, %r3
+	li	%r3, 0
+	stw	%r3, 0(%r1)
+	bl	mi_startup
+
+	/* mi_startup() does not return */
+	b	.
+
+#include <powerpc/aim/trap_subr32.S>