diff options
Diffstat (limited to 'misc/pascal/insn32/plopt/polocal.c')
| -rw-r--r-- | misc/pascal/insn32/plopt/polocal.c | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/misc/pascal/insn32/plopt/polocal.c b/misc/pascal/insn32/plopt/polocal.c deleted file mode 100644 index 551913a49..000000000 --- a/misc/pascal/insn32/plopt/polocal.c +++ /dev/null @@ -1,271 +0,0 @@ -/**********************************************************************
- * polocal.c
- * P-Code Local Optimizer
- *
- * Copyright (C) 2008 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- **********************************************************************/
-
-/**********************************************************************
- * Included Files
- **********************************************************************/
-
-#include <stdio.h>
-
-#include "keywords.h"
-#include "podefs.h"
-#include "pinsn32.h"
-
-#include "pofflib.h"
-#include "paslib.h"
-#include "pinsn.h"
-#include "pcopt.h"
-#include "plopt.h"
-#include "pjopt.h"
-#include "polocal.h"
-
-/**********************************************************************
- * Private Function Prototypes
- **********************************************************************/
-
-static void initPTable (void);
-static void putPCodeFromTable (void);
-static void setupPointer (void);
-
-/**********************************************************************
- * Global Variables
- **********************************************************************/
-
-OPTYPE ptable [WINDOW]; /* Pcode Table */
-OPTYPE *pptr [WINDOW]; /* Valid Pcode Pointers */
-
-int nops = 0; /* No. Valid Pcode Pointers */
-int end_out = 0; /* 1 = oEND pcode has been output */
-
-/**********************************************************************
- * Private Variables
- **********************************************************************/
-
-static poffHandle_t myPoffHandle; /* Handle to POFF object */
-static poffProgHandle_t myPoffProgHandle;/* Handle to temporary POFF object */
-
-/**********************************************************************
- * Global Functions
- **********************************************************************/
-
-/***********************************************************************/
-
-void localOptimization(poffHandle_t poffHandle,
- poffProgHandle_t poffProgHandle)
-{
- int nchanges;
-
- TRACE(stderr, "[pass2]");
-
- /* Save the handles for use by other, private functions */
-
- myPoffHandle = poffHandle;
- myPoffProgHandle = poffProgHandle;
-
- /* Initialization */
-
- initPTable();
-
- /* Outer loop traverse the file op-code by op-code until the oEND P-Code
- * has been output. NOTE: it is assumed throughout that oEND is the
- * final P-Code in the program data section.
- */
-
- while (!(end_out))
- {
- /* The inner loop optimizes the buffered P-Codes until no further
- * changes can be made. Then the outer loop will advance the buffer
- * by one P-Code
- */
-
- do
- {
- nchanges = unaryOptimize ();
- nchanges += binaryOptimize();
- nchanges += BranchOptimize();
- nchanges += LoadOptimize();
- nchanges += StoreOptimize();
- } while (nchanges);
-
- putPCodeFromTable();
- }
-}
-
-/***********************************************************************/
-
-void deletePcode(int delIndex)
-{
- TRACE(stderr, "[deletePcode]");
-
- PUTOP(pptr[delIndex], oNOP);
- PUTARG(pptr[delIndex], 0);
- setupPointer();
-}
-
-/**********************************************************************/
-
-void deletePcodePair(int delIndex1, int delIndex2)
-{
- TRACE(stderr, "[deletePcodePair]");
-
- PUTOP(pptr[delIndex1], oNOP);
- PUTARG(pptr[delIndex1], 0);
- PUTOP(pptr[delIndex2], oNOP);
- PUTARG(pptr[delIndex2], 0);
- setupPointer();
-}
-
-/**********************************************************************
- * Private Functions
- **********************************************************************/
-
-/***********************************************************************/
-
-static void putPCodeFromTable(void)
-{
- register int i;
-
- TRACE(stderr, "[putPCodeFromTable]");
-
- /* Transfer all buffered P-Codes (except NOPs) to the optimized file */
- do
- {
- if ((GETOP(&ptable[0]) != oNOP) && !(end_out))
- {
- insn_AddTmpOpCode(myPoffProgHandle, &ptable[0]);
- end_out = (GETOP(&ptable[0]) == oEND);
- }
-
- /* Move all P-Codes down one slot */
-
- for (i = 1; i < WINDOW; i++)
- {
- ptable[i-1] = ptable[i];
- }
-
- /* Then fill the end slot with a new P-Code from the input file */
-
- insn_GetOpCode(myPoffHandle, &ptable[WINDOW-1]);
-
- } while (GETOP(&ptable[0]) == oNOP);
- setupPointer();
-}
-
-/**********************************************************************/
-
-static void setupPointer(void)
-{
- register int pindex;
-
- TRACE(stderr, "[setupPointer]");
-
- for (pindex = 0; pindex < WINDOW; pindex++)
- pptr[pindex] = (OPTYPE *) NULL;
-
- nops = 0;
- for (pindex = 0; pindex < WINDOW; pindex++)
- {
- switch (GETOP(&ptable[pindex]))
- {
- /* Terminate list when a break from sequential logic is
- * encountered
- */
-
- case oRET :
- case oEND :
- case oJMP :
- case oLABEL :
- case oPCAL :
- return;
-
- /* Terminate list when a condition break from sequential logic is
- * encountered but include the conditional branch in the list
- */
-
- case oJEQUZ :
- case oJNEQZ :
- case oJLTZ :
- case oJGTEZ :
- case oJGTZ :
- case oJLTEZ :
- pptr[nops] = &ptable[pindex];
- nops++;
- return;
-
- /* Skip over NOPs and comment class pcodes */
-
- case oNOP :
- case oLINE :
- break;
-
- /* Include all other pcodes in the optimization list and continue */
-
- default :
- pptr[nops] = &ptable[pindex];
- nops++;
- }
- }
-}
-
-/**********************************************************************/
-
-static void initPTable(void)
-{
- register int i;
-
- TRACE(stderr, "[intPTable]");
-
- /* Skip over leading pcodes. NOTE: assumes executable begins after
- * the first oLABEL pcode
- */
-
- do
- {
- insn_GetOpCode(myPoffHandle, &ptable[0]);
- insn_AddTmpOpCode(myPoffProgHandle, &ptable[0]);
- }
- while ((GETOP(&ptable[0]) != oLABEL) && (GETOP(&ptable[0]) != oEND));
-
- /* Fill the pcode window and setup pointers to working section */
-
- for (i = 0; i < WINDOW; i++)
- {
- insn_GetOpCode(myPoffHandle, &ptable[i]);
- }
- setupPointer();
-}
-
-/***********************************************************************/
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