4ad9d87d7a
Decrease MAX_GRAMMAR_SIZE from 256 to 64. In Dependency.c => PeimDispatchReadiness, a local variable 'EvalStack' makes an array of EVAL_STACK_ENTRY structures to store a stack for processing the dependency expression. Due to alignment considerations, sizeof (EVAL_STACK_ENTRY) is 16 bytes on 64 bit architectures. This means the size of the EvalStack local variable in PeimDispatchReadiness grows to 4kb. In the PEI phase, the stack area may be very small, and therefore 4kb is much to large. Reducing MAX_GRAMMAR_SIZE to 64 will lower the size of EvalStack to 1kb. While reducing this to 1kb solves an issue seen with GCC on X64, it is still a large usage of stack for the PEI phase, and future improvements may still need to be made. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7514 6f19259b-4bc3-4df7-8a09-765794883524
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
/** @file
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This module contains data specific to dependency expressions
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and local function prototypes.
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Copyright (c) 2006 - 2008, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _PEI_DEPENDENCY_H_
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#define _PEI_DEPENDENCY_H_
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#define MAX_GRAMMAR_SIZE 64
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//
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// type definitions
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//
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typedef UINT8 DEPENDENCY_EXPRESSION_OPERAND;
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typedef struct {
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BOOLEAN Result;
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VOID *Operator;
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} EVAL_STACK_ENTRY;
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#endif
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