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[Qemu-devel] [PATCH 04/24] S390: ccw firmware: Add start assembly
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH 04/24] S390: ccw firmware: Add start assembly |
Date: |
Fri, 26 Apr 2013 20:19:13 +0200 |
We want to write most of our code in C, so add a small assembly
stub that jumps straight into C code for us to continue booting.
Signed-off-by: Alexander Graf <address@hidden>
---
pc-bios/s390-ccw/start.S | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
create mode 100644 pc-bios/s390-ccw/start.S
diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S
new file mode 100644
index 0000000..c2b9a19
--- /dev/null
+++ b/pc-bios/s390-ccw/start.S
@@ -0,0 +1,16 @@
+/*
+ * First stage boot loader for virtio devices. The compiled output goes
+ * into the pc-bios directory of qemu.
+ *
+ * Copyright (c) 2013 Alexander Graf <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+ .globl _start
+_start:
+
+larl %r15, stack + 0x8000 /* Set up stack */
+j main /* And call C */
--
1.6.0.2
- [Qemu-devel] [PULL 00/24] s390 patch queue 2013-04-26, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 02/24] S390: IPL: Support ELF firmware, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 04/24] S390: ccw firmware: Add start assembly,
Alexander Graf <=
- [Qemu-devel] [PATCH 01/24] S390: Make IPL reset address dynamic, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 11/24] s390-ccw.img: replace while loop with a disabled wait on s390 bios, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 10/24] S390: ccw firmware: Add Makefile, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 05/24] S390: ccw firmware: Add main program, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 13/24] s390-ccw.img: Take care of the elf->img transition, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 14/24] s390-ccw.img: Fix compile warning in s390 ccw virtio code, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 12/24] s390-ccw.img: build s390-ccw rom on s3900 system by default, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 08/24] S390: ccw firmware: Add glue header, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 03/24] S390: IPL: Use different firmware for different machines, Alexander Graf, 2013/04/26
- [Qemu-devel] [PATCH 09/24] S390: ccw firmware: Add bootmap interpreter, Alexander Graf, 2013/04/26