| /// @file | |
| /// This is set of macros used in calculating offsets in the IVT. | |
| /// | |
| /// Copyright (c) 2006 - 2008, Intel Corporation. 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. | |
| /// | |
| /// | |
| #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_CODE_SIZE is the size of patch code | |
| #define PATCH_CODE_SIZE (EndPatchCode - PatchCode) | |
| // 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) | |