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9f3ee61c90
The AArch32 Procedure call Standard mandates that the stack must be aligned to 8 byte boundary at external interfaces. This patch does the required changes. This problem was detected when a crash was encountered in `psci_print_power_domain_map()` while printing 64 bit values. Aligning the stack to 8 byte boundary resolved the problem. Fixes ARM-Software/tf-issues#437 Change-Id: I517bd8203601bb88e9311bd36d477fb7b3efb292 Signed-off-by: Soby Mathew <soby.mathew@arm.com>
65 lines
2.5 KiB
ArmAsm
65 lines
2.5 KiB
ArmAsm
/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <asm_macros.S>
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#include <cpu_data.h>
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.globl _cpu_data
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.globl _cpu_data_by_index
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/* -----------------------------------------------------------------
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* cpu_data_t *_cpu_data(void)
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*
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* Return the cpu_data structure for the current CPU.
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* -----------------------------------------------------------------
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*/
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func _cpu_data
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/* r12 is pushed to meet the 8 byte stack alignment requirement */
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push {r12, lr}
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bl plat_my_core_pos
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pop {r12, lr}
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b _cpu_data_by_index
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endfunc _cpu_data
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/* -----------------------------------------------------------------
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* cpu_data_t *_cpu_data_by_index(uint32_t cpu_index)
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*
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* Return the cpu_data structure for the CPU with given linear index
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*
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* This can be called without a valid stack.
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* clobbers: r0, r1
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* -----------------------------------------------------------------
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*/
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func _cpu_data_by_index
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ldr r1, =percpu_data
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add r0, r1, r0, LSL #CPU_DATA_LOG2SIZE
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bx lr
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endfunc _cpu_data_by_index
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