From 4a14dfcc1110b35118d5be8054fecf59ffb83032 Mon Sep 17 00:00:00 2001 From: Mitchell Horne Date: Wed, 3 Jun 2020 18:44:51 +0000 Subject: Import edk2-stable202005 As with the previous import, only the MdePkg subdirectory has been brought in. The line-endings were also converted using: % find . -type f | xargs -n 1 sed -I.BAK -e `printf "s/\r//g"` % find . -name \*.BAK | xargs rm --- .../Library/BaseLib/RiscV64/InternalSwitchStack.c | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 MdePkg/Library/BaseLib/RiscV64/InternalSwitchStack.c (limited to 'MdePkg/Library/BaseLib/RiscV64/InternalSwitchStack.c') diff --git a/MdePkg/Library/BaseLib/RiscV64/InternalSwitchStack.c b/MdePkg/Library/BaseLib/RiscV64/InternalSwitchStack.c new file mode 100644 index 000000000000..17ae3914f080 --- /dev/null +++ b/MdePkg/Library/BaseLib/RiscV64/InternalSwitchStack.c @@ -0,0 +1,55 @@ +/** @file + Switch stack function for RISC-V + + Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#include "BaseLibInternals.h" + +/** + Transfers control to a function starting with a new stack. + + Transfers control to the function specified by EntryPoint using the + new stack specified by NewStack and passing in the parameters specified + by Context1 and Context2. Context1 and Context2 are optional and may + be NULL. The function EntryPoint must never return. + Marker will be ignored on IA-32, x64, and EBC. + IPF CPUs expect one additional parameter of type VOID * that specifies + the new backing store pointer. + + If EntryPoint is NULL, then ASSERT(). + If NewStack is NULL, then ASSERT(). + + @param EntryPoint A pointer to function to call with the new stack. + @param Context1 A pointer to the context to pass into the EntryPoint + function. + @param Context2 A pointer to the context to pass into the EntryPoint + function. + @param NewStack A pointer to the new stack to use for the EntryPoint + function. + @param Marker VA_LIST marker for the variable argument list. + +**/ +VOID +EFIAPI +InternalSwitchStack ( + IN SWITCH_STACK_ENTRY_POINT EntryPoint, + IN VOID *Context1, OPTIONAL + IN VOID *Context2, OPTIONAL + IN VOID *NewStack, + IN VA_LIST Marker + ) +{ + BASE_LIBRARY_JUMP_BUFFER JumpBuffer; + + DEBUG ((DEBUG_INFO, "RISC-V InternalSwitchStack Entry:%x Context1:%x Context2:%x NewStack%x\n", \ + EntryPoint, Context1, Context2, NewStack)); + JumpBuffer.RA = (UINTN)EntryPoint; + JumpBuffer.SP = (UINTN)NewStack - sizeof (VOID *); + JumpBuffer.S0 = (UINT64)(UINTN)Context1; + JumpBuffer.S1 = (UINT64)(UINTN)Context2; + LongJump (&JumpBuffer, (UINTN)-1); + ASSERT(FALSE); +} -- cgit v1.2.3