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AsmMacroIoLib.h and AsmMacroIoLibV8.h are used by the CompilerIntrinsicsLib, which is moving to MdePkg. These functions provide standard definitions for ARM/AARCH64 assembly code, respectively, and so are moved to the arch directories in MdePkg to avoid MdePkg having a dependency on ArmPkg. Now that the files are in Arm/ and AArch64/ directories, the filenames are changed to AsmMacroLib.h as we can distinguish the architecture from the path. AsmMacroIoLib.inc is unused and so is removed. Continuous-integration-options: PatchCheck.ignore-multi-package Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
50 lines
1.0 KiB
ArmAsm
50 lines
1.0 KiB
ArmAsm
//
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// Copyright (c) 2024, Google Llc. All rights reserved.
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//
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// SPDX-License-Identifier: BSD-2-Clause-Patent
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//
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//
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#include <AsmMacroLib.h>
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/** Monitor call.
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An HyperVisor Call (HVC) or System Monitor Call (SMC) will be issued
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depending on the default conduit. PcdMonitorConduitHvc determines the type
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of the call: if true, do an HVC.
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@param [in,out] Args Arguments for the HVC/SMC.
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**/
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ASM_FUNC(ArmMonitorCall)
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push {r4-r7}
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// Preserve R0 for later use
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mov ip, r0
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// Load the SMCCC arguments values into the appropriate registers
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ldm r0, {r0-r7}
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#if !defined(_PCD_VALUE_PcdMonitorConduitHvc)
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#error
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#elif _PCD_VALUE_PcdMonitorConduitHvc == 0
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.arch_extension sec
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smc #0
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#elif _PCD_VALUE_PcdMonitorConduitHvc == 1
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.arch_extension virt
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hvc #0
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#else
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#error
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#endif
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// A SMCCC SMC32/HVC32 call can return up to 8 values.
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stm ip, {r0-r7}
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// Clear return values from registers
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mov r0, #0
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mov r1, #0
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mov r2, #0
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mov r3, #0
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pop {r4-r7}
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bx lr
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