diff options
Diffstat (limited to 'MdeModulePkg/Universal/DebugSupportDxe/Ipf/Ds64Macros.i')
-rw-r--r-- | MdeModulePkg/Universal/DebugSupportDxe/Ipf/Ds64Macros.i | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Ds64Macros.i b/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Ds64Macros.i new file mode 100644 index 0000000000..7316e199b5 --- /dev/null +++ b/MdeModulePkg/Universal/DebugSupportDxe/Ipf/Ds64Macros.i @@ -0,0 +1,80 @@ +/// @file
+/// This is set of macros used in calculating offsets in the IVT.
+///
+/// Copyright (c) 2006, Intel Corporation
+/// 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.
+///
+/// Module Name: Ds64Macros.i
+///
+///
+
+
+#define EXCPT_EXTERNAL_INTERRUPT 12
+#define MASK_0_4 0x000000000000001F // mask bits 0 through 4
+#define SLOT0 0
+#define SLOT1 1
+#define SLOT2 2
+
+#define PSR_DT 17
+#define PSR_TB 26
+#define PSR_RT 27
+#define PSR_IS 34
+#define PSR_IT 36
+#define PSR_IC 13
+#define PSR_I 14
+#define PSR_SS 40
+#define PSR_BN 44
+#define PSR_RI_MASK 0x60000000000
+
+#define EXCPT_EXTERNAL_INTERRUPT 12
+
+#define SCRATCH_REG0 r23
+#define SCRATCH_REG1 r24
+#define SCRATCH_REG2 r25
+#define SCRATCH_REG3 r26
+#define SCRATCH_REG4 r27
+#define SCRATCH_REG5 r28
+#define SCRATCH_REG6 r29
+#define PR_REG r30
+#define B0_REG r31
+
+
+// EXT_INT_OFFSET is the offset of the external interrupt entry in the IVT
+#define EXT_INT_ENTRY_OFFSET 0x03000
+
+// PATCH_ENTRY_OFFSET is the offset into the IVT of the entry that is coopted (stolen)
+// for use by the handler. The entire entry is restored when the handler is
+// unloaded.
+#define PATCH_ENTRY_OFFSET 0x03400
+
+// PATCH_BUNDLES is the number of bundles actually in the patch
+#define NUM_PATCH_BUNDLES ((EndPatchCode - PatchCode) / 0x10)
+
+// A hard coded branch back into the external interrupt IVT entry's second bundle
+// is put here, just in case the original bundle zero did not have a branch
+// This is the last bundle in the reserved IVT entry
+#define FAILSAFE_BRANCH_OFFSET (PATCH_ENTRY_OFFSET + 0x400 - 0x10)
+
+// the original external interrupt IVT entry bundle zero is copied and relocated
+// here... also in the reserved IVT entry
+// This is the second-to-last bundle in the reserved IVT entry
+#define RELOCATED_EXT_INT (PATCH_ENTRY_OFFSET + 0x400 - 0x20)
+
+// The patch is actually stored at the end of IVT:PATCH_ENTRY. The PATCH_OFFSET
+// is the offset into IVT where the patch is actually stored. It is carefully
+// located so that when we run out of patch code, the next bundle is the
+// relocated bundle 0 from the original external interrupt handler
+#define PATCH_OFFSET (PATCH_ENTRY_OFFSET + 0x400 - ( EndPatchCode - PatchCode ) - 0x20)
+
+#define PATCH_RETURN_OFFSET (PATCH_ENTRY_OFFSET + 0x400 - ( EndPatchCode - PatchCodeRet ) - 0x20)
+
+// PATCH_BRANCH is used only in the new bundle that is placed at the beginning
+// of the external interrupt IVT entry.
+#define PATCH_BRANCH (PATCH_OFFSET - EXT_INT_ENTRY_OFFSET)
+
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