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# IBM_PROLOG_BEGIN_TAG
# This is an automatically generated prolog.
#
# $Source: src/runtime/rt_start.S $
#
# OpenPOWER HostBoot Project
#
# Contributors Listed Below - COPYRIGHT 2013,2017
# [+] International Business Machines Corp.
# [+] Joel Stanley
#
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing
# permissions and limitations under the License.
#
# IBM_PROLOG_END_TAG
.include "kernel/ppcconsts.S"
#define __HOSTBOOT_RUNTIME_INTERFACE_VERSION_ONLY 1
#include <runtime/interface.h>
.section .text.intvects
.org 0x0;
hbrt_desired_interface_version:
.quad 0x4842525456455253 # 'HBRTVERS' eyecatch.
.quad HOSTBOOT_RUNTIME_INTERFACE_VERSION
.org 0x100;
_init:
mflr r10 # Save LR
bl 1f # Get current address by branch-with-link.
1:
mflr r4 # Extract current address.
mtlr r10 # Restore LR.
clrrdi r4, r4, 12 # Align address to 4k.
addi r10, r4, 0x2000 # Find VFS_LAST_ADDRESS symbol.
ld r10, 0(r10) # Read start of relocation table.
add r10, r10, r4
ld r8, 0(r10) # Get count of relocations.
cmpwi cr0, r8, 0 # Perform relocations (if any).
beq 2f
mtctr r8
1:
ldu r8, 8(r10) # Get relocation destination
add r8, r8, r4
ld r7, 0(r8) # Get relocation address
add r7, r7, r4
std r7, 0(r8) # Update relocation address.
bdnz 1b # Decrement CTR and continue loop.
2:
addi r10, r4, 0x2008 # Find pointer to main TOC.
ld r10, 0(r10) # Dereference pointer to get TOC entry.
ld r2, 8(r10)
ld r10, 0(r10)
mtctr r10
bctr
.section .text.kernelasm # @2000
.global VFS_LAST_ADDRESS
VFS_LAST_ADDRESS:
.space 8
main_toc_ptr:
.quad _main
.section .data
.global hbi_ImageId
hbi_ImageId:
.space 128
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