d63ed30bb5
ARM ArmHvcLib looks like it was created from copy of ArmSmcLib which looks like it was created from a copy of the AArch64 version. Both of these files include AsmMacroIoLibV8.h instead of AsmMacroIoLib.h, although since they only use macros that are identical between the two, there was no functional issue caused by this. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
52 lines
1.5 KiB
ArmAsm
52 lines
1.5 KiB
ArmAsm
//
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// Copyright (c) 2012-2014, ARM Limited. All rights reserved.
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// Copyright (c) 2014-2016, Linaro Limited. All rights reserved.
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//
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// This program and the accompanying materials
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// are licensed and made available under the terms and conditions of the BSD License
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// which accompanies this distribution. The full text of the license may be found at
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// http://opensource.org/licenses/bsd-license.php
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//
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// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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//
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//
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#include <AsmMacroIoLib.h>
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.arch_extension virt
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ASM_FUNC(ArmCallHvc)
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push {r4-r8}
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// r0 will be popped just after the HVC call
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push {r0}
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// Load the HVC arguments values into the appropriate registers
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ldr r7, [r0, #28]
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ldr r6, [r0, #24]
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ldr r5, [r0, #20]
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ldr r4, [r0, #16]
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ldr r3, [r0, #12]
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ldr r2, [r0, #8]
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ldr r1, [r0, #4]
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ldr r0, [r0, #0]
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hvc #0
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// Pop the ARM_HVC_ARGS structure address from the stack into r8
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pop {r8}
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// Load the HVC returned values into the appropriate registers
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// A HVC call can return up to 4 values - we do not need to store back r4-r7.
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str r3, [r8, #12]
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str r2, [r8, #8]
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str r1, [r8, #4]
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str r0, [r8, #0]
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mov r0, r8
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// Restore the registers r4-r8
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pop {r4-r8}
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bx lr
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