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-rw-r--r--MdePkg/Library/BaseLib/AArch64/CpuBreakpoint.asm39
-rw-r--r--MdePkg/Library/BaseLib/AArch64/DisableInterrupts.asm37
-rw-r--r--MdePkg/Library/BaseLib/AArch64/EnableInterrupts.asm37
-rw-r--r--MdePkg/Library/BaseLib/AArch64/GetInterruptsState.asm49
-rw-r--r--MdePkg/Library/BaseLib/AArch64/MemoryFence.asm38
-rw-r--r--MdePkg/Library/BaseLib/AArch64/SetJumpLongJump.asm101
-rw-r--r--MdePkg/Library/BaseLib/AArch64/SwitchStack.asm69
-rw-r--r--MdePkg/Library/BaseLib/BaseLib.inf8
8 files changed, 378 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/AArch64/CpuBreakpoint.asm b/MdePkg/Library/BaseLib/AArch64/CpuBreakpoint.asm
new file mode 100644
index 0000000000..17e993f5b7
--- /dev/null
+++ b/MdePkg/Library/BaseLib/AArch64/CpuBreakpoint.asm
@@ -0,0 +1,39 @@
+;------------------------------------------------------------------------------
+;
+; CpuBreakpoint() for AArch64
+;
+; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+; Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+;------------------------------------------------------------------------------
+
+
+ EXPORT CpuBreakpoint
+ AREA BaseLib_LowLevel, CODE, READONLY
+
+;/**
+; Generates a breakpoint on the CPU.
+;
+; Generates a breakpoint on the CPU. The breakpoint must be implemented such
+; that code can resume normal execution after the breakpoint.
+;
+;**/
+;VOID
+;EFIAPI
+;CpuBreakpoint (
+; VOID
+; );
+;
+CpuBreakpoint
+ svc 0xdbdb // Superviser exception. Takes 16bit arg -> Armv7 had 'swi' here.
+ ret
+
+ END
diff --git a/MdePkg/Library/BaseLib/AArch64/DisableInterrupts.asm b/MdePkg/Library/BaseLib/AArch64/DisableInterrupts.asm
new file mode 100644
index 0000000000..498493454c
--- /dev/null
+++ b/MdePkg/Library/BaseLib/AArch64/DisableInterrupts.asm
@@ -0,0 +1,37 @@
+;------------------------------------------------------------------------------
+;
+; DisableInterrupts() for AArch64
+;
+; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+; Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+;------------------------------------------------------------------------------
+
+ EXPORT DisableInterrupts
+ AREA BaseLib_LowLevel, CODE, READONLY
+
+DAIF_WR_IRQ_BIT EQU (1 << 1)
+
+;/**
+; Disables CPU interrupts.
+;
+;**/
+;VOID
+;EFIAPI
+;DisableInterrupts (
+; VOID
+; );
+;
+DisableInterrupts
+ msr daifset, #DAIF_WR_IRQ_BIT
+ ret
+
+ END
diff --git a/MdePkg/Library/BaseLib/AArch64/EnableInterrupts.asm b/MdePkg/Library/BaseLib/AArch64/EnableInterrupts.asm
new file mode 100644
index 0000000000..ec3d6e45ff
--- /dev/null
+++ b/MdePkg/Library/BaseLib/AArch64/EnableInterrupts.asm
@@ -0,0 +1,37 @@
+;------------------------------------------------------------------------------
+;
+; EnableInterrupts() for AArch64
+;
+; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+; Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+;------------------------------------------------------------------------------
+
+ EXPORT EnableInterrupts
+ AREA BaseLib_LowLevel, CODE, READONLY
+
+DAIF_WR_IRQ_BIT EQU (1 << 1)
+
+;/**
+; Enables CPU interrupts.
+;
+;**/
+;VOID
+;EFIAPI
+;EnableInterrupts (
+; VOID
+; );
+;
+EnableInterrupts
+ msr daifclr, #DAIF_WR_IRQ_BIT
+ ret
+
+ END
diff --git a/MdePkg/Library/BaseLib/AArch64/GetInterruptsState.asm b/MdePkg/Library/BaseLib/AArch64/GetInterruptsState.asm
new file mode 100644
index 0000000000..d64b0d513c
--- /dev/null
+++ b/MdePkg/Library/BaseLib/AArch64/GetInterruptsState.asm
@@ -0,0 +1,49 @@
+;------------------------------------------------------------------------------
+;
+; GetInterruptState() function for AArch64
+;
+; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+; Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+;------------------------------------------------------------------------------
+
+ EXPORT GetInterruptState
+ AREA BaseLib_LowLevel, CODE, READONLY
+
+DAIF_RD_IRQ_BIT EQU (1 << 7)
+
+;/**
+; Retrieves the current CPU interrupt state.
+;
+; Returns TRUE is interrupts are currently enabled. Otherwise
+; returns FALSE.
+;
+; @retval TRUE CPU interrupts are enabled.
+; @retval FALSE CPU interrupts are disabled.
+;
+;**/
+;
+;BOOLEAN
+;EFIAPI
+;GetInterruptState (
+; VOID
+; );
+;
+GetInterruptState
+ mrs x0, daif
+ mov w0, wzr
+ tst x0, #DAIF_RD_IRQ_BIT // Check IRQ mask; set Z=1 if clear/unmasked
+ bne exit // if Z=1 (eq) return 1, else 0
+ mov w0, #1
+exit
+ ret
+
+ END
diff --git a/MdePkg/Library/BaseLib/AArch64/MemoryFence.asm b/MdePkg/Library/BaseLib/AArch64/MemoryFence.asm
new file mode 100644
index 0000000000..84dede698e
--- /dev/null
+++ b/MdePkg/Library/BaseLib/AArch64/MemoryFence.asm
@@ -0,0 +1,38 @@
+;------------------------------------------------------------------------------
+;
+; MemoryFence() for AArch64
+;
+; Copyright (c) 2013, ARM Ltd. All rights reserved.
+;
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+;------------------------------------------------------------------------------
+
+ EXPORT MemoryFence
+ AREA BaseLib_LowLevel, CODE, READONLY
+
+;/**
+; Used to serialize load and store operations.
+;
+; All loads and stores that proceed calls to this function are guaranteed to be
+; globally visible when this function returns.
+;
+;**/
+;VOID
+;EFIAPI
+;MemoryFence (
+; VOID
+; );
+;
+MemoryFence
+ // System wide Data Memory Barrier.
+ dmb sy
+ ret
+
+ END
diff --git a/MdePkg/Library/BaseLib/AArch64/SetJumpLongJump.asm b/MdePkg/Library/BaseLib/AArch64/SetJumpLongJump.asm
new file mode 100644
index 0000000000..e0a9715ff2
--- /dev/null
+++ b/MdePkg/Library/BaseLib/AArch64/SetJumpLongJump.asm
@@ -0,0 +1,101 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2009-2013, ARM Ltd. All rights reserved.
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+;------------------------------------------------------------------------------
+
+ EXPORT SetJump
+ EXPORT InternalLongJump
+ AREA BaseLib_LowLevel, CODE, READONLY
+
+#define GPR_LAYOUT \
+ REG_PAIR (x19, x20, #0); \
+ REG_PAIR (x21, x22, #16); \
+ REG_PAIR (x23, x24, #32); \
+ REG_PAIR (x25, x26, #48); \
+ REG_PAIR (x27, x28, #64); \
+ REG_PAIR (x29, x30, #80);/*FP, LR*/ \
+ REG_ONE (x16, #96) /*IP0*/
+
+#define FPR_LAYOUT \
+ REG_PAIR ( d8, d9, #112); \
+ REG_PAIR (d10, d11, #128); \
+ REG_PAIR (d12, d13, #144); \
+ REG_PAIR (d14, d15, #160);
+
+;/**
+; Saves the current CPU context that can be restored with a call to LongJump() and returns 0.#
+;
+; Saves the current CPU context in the buffer specified by JumpBuffer and returns 0. The initial
+; call to SetJump() must always return 0. Subsequent calls to LongJump() cause a non-zero
+; value to be returned by SetJump().
+;
+; If JumpBuffer is NULL, then ASSERT().
+; For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().
+;
+; @param JumpBuffer A pointer to CPU context buffer.
+;
+;**/
+;
+;UINTN
+;EFIAPI
+;SetJump (
+; IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer // X0
+; );
+;
+SetJump
+ mov x16, sp // use IP0 so save SP
+#define REG_PAIR(REG1, REG2, OFFS) stp REG1, REG2, [x0, OFFS]
+#define REG_ONE(REG1, OFFS) str REG1, [x0, OFFS]
+ GPR_LAYOUT
+ FPR_LAYOUT
+#undef REG_PAIR
+#undef REG_ONE
+ mov w0, #0
+ ret
+
+;/**
+; Restores the CPU context that was saved with SetJump().#
+;
+; Restores the CPU context from the buffer specified by JumpBuffer.
+; This function never returns to the caller.
+; Instead is resumes execution based on the state of JumpBuffer.
+;
+; @param JumpBuffer A pointer to CPU context buffer.
+; @param Value The value to return when the SetJump() context is restored.
+;
+;**/
+;VOID
+;EFIAPI
+;InternalLongJump (
+; IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, // X0
+; IN UINTN Value // X1
+; );
+;
+InternalLongJump
+#define REG_PAIR(REG1, REG2, OFFS) ldp REG1, REG2, [x0, OFFS]
+#define REG_ONE(REG1, OFFS) ldr REG1, [x0, OFFS]
+ GPR_LAYOUT
+ FPR_LAYOUT
+#undef REG_PAIR
+#undef REG_ONE
+ mov sp, x16
+ cmp w1, #0
+ mov w0, #1
+ beq exit
+ mov w0, w1
+exit
+ // use br not ret, as ret is guaranteed to mispredict
+ br x30
+
+ASM_FUNCTION_REMOVE_IF_UNREFERENCED
+
+ END
+
diff --git a/MdePkg/Library/BaseLib/AArch64/SwitchStack.asm b/MdePkg/Library/BaseLib/AArch64/SwitchStack.asm
new file mode 100644
index 0000000000..c1b2de07e2
--- /dev/null
+++ b/MdePkg/Library/BaseLib/AArch64/SwitchStack.asm
@@ -0,0 +1,69 @@
+//------------------------------------------------------------------------------
+//
+// Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+// Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+// Portions copyright (c) 2011 - 2013, ARM Limited. All rights reserved.<BR>
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php.
+//
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+//------------------------------------------------------------------------------
+
+ EXPORT InternalSwitchStackAsm
+ EXPORT CpuPause
+ AREA BaseLib_LowLevel, CODE, READONLY
+
+/**
+//
+// This allows the caller to switch the stack and goes to the new entry point
+//
+// @param EntryPoint The pointer to the location to enter
+// @param Context Parameter to pass in
+// @param Context2 Parameter2 to pass in
+// @param NewStack New Location of the stack
+//
+// @return Nothing. Goes to the Entry Point passing in the new parameters
+//
+VOID
+EFIAPI
+InternalSwitchStackAsm (
+ SWITCH_STACK_ENTRY_POINT EntryPoint,
+ VOID *Context,
+ VOID *Context2,
+ VOID *NewStack
+ );
+**/
+InternalSwitchStackAsm
+ mov x29, #0
+ mov x30, x0
+ mov sp, x3
+ mov x0, x1
+ mov x1, x2
+ ret
+
+/**
+//
+// Requests CPU to pause for a short period of time.
+//
+// Requests CPU to pause for a short period of time. Typically used in MP
+// systems to prevent memory starvation while waiting for a spin lock.
+//
+VOID
+EFIAPI
+CpuPause (
+ VOID
+ )
+**/
+CpuPause
+ nop
+ nop
+ nop
+ nop
+ nop
+ ret
+
+ END
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 3c07e6bad9..80d00ebed7 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -867,6 +867,14 @@
AArch64/SetJumpLongJump.S | GCC
AArch64/CpuBreakpoint.S | GCC
+ AArch64/MemoryFence.asm | MSFT
+ AArch64/SwitchStack.asm | MSFT
+ AArch64/EnableInterrupts.asm | MSFT
+ AArch64/DisableInterrupts.asm | MSFT
+ AArch64/GetInterruptsState.asm | MSFT
+ AArch64/SetJumpLongJump.asm | MSFT
+ AArch64/CpuBreakpoint.asm | MSFT
+
[Packages]
MdePkg/MdePkg.dec
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 02:54:37 +0000