/**********************************************************************
* popt.c
* P-Code Optimizer Main Logic
*
* Copyright (C) 2008-2009 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 <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "keywords.h"
#include "podefs.h"
#include "paslib.h"
#include "pofflib.h"
#include "pinsn.h"
#include "popt.h"
#include "psopt.h"
#include "polocal.h"
#include "pfopt.h"
/**********************************************************************
* Private Function Prototypes
**********************************************************************/
static void readPoffFile (const char *filename);
static void pass1 (void);
static void pass2 (void);
static void pass3 (void);
static void writePoffFile (const char *filename);
/**********************************************************************
* Global Variables
**********************************************************************/
/**********************************************************************
* Private Variables
**********************************************************************/
static poffHandle_t poffHandle; /* Handle to POFF object */
/**********************************************************************
* Global Functions
**********************************************************************/
/***********************************************************************/
int main(int argc, char *argv[], char *envp[])
{
TRACE(stderr, "[main]");
/* Check for existence of filename argument */
if (argc < 2)
{
printf("Filename Required\n");
exit (1);
} /* end if */
/* Read the POFF file into memory */
readPoffFile(argv[1]);
/* Performs pass1 optimization */
pass1();
/* Performs pass2 optimization */
insn_ResetOpCodeRead(poffHandle);
pass2();
/* Create final section offsets and relocation entries */
insn_ResetOpCodeRead(poffHandle);
pass3();
/* Write the POFF file */
writePoffFile(argv[1]);
return 0;
} /* End main */
/**********************************************************************
* Private Functions
**********************************************************************/
/***********************************************************************/
static void readPoffFile(const char *filename)
{
char objname [FNAME_SIZE+1];
FILE *objFile;
uint16_t errcode;
TRACE(stderr, "[readPoffFile]");
/* Open the pass1 POFF object file -- Use .o1 extension */
(void)extension(filename, "o1", objname, 1);
if (!(objFile = fopen(objname, "rb")))
{
printf("Error Opening %s\n", objname);
exit(1);
} /* end if */
/* Get a handle to a POFF input object */
poffHandle = poffCreateHandle();
if (!poffHandle)
{
printf("Could not get POFF handle\n");
exit(1);
} /* end if */
/* Read the POFF file into memory */
errcode = poffReadFile(poffHandle, objFile);
if (errcode != 0)
{
printf("Could not read POFF file, errcode=0x%02x\n", errcode);
exit(1);
}
/* Close the input file */
fclose(objFile);
} /* end pass1 */
/***********************************************************************/
static void pass1(void)
{
poffProgHandle_t poffProgHandle; /* Handle to temporary POFF object */
TRACE(stderr, "[pass1]");
/* Create a handle to a temporary object to store new POFF program
* data.
*/
poffProgHandle = poffCreateProgHandle();
if (!poffProgHandle)
{
printf("Could not get POFF handle\n");
exit(1);
} /* end if */
/* Clean up garbage left from the wasteful string stack logic */
stringStackOptimize(poffHandle, poffProgHandle);
/* Replace the original program data with the new program data */
poffReplaceProgData(poffHandle, poffProgHandle);
/* Release the temporary POFF object */
poffDestroyProgHandle(poffProgHandle);
} /* end pass1 */
/***********************************************************************/
static void pass2(void)
{
poffProgHandle_t poffProgHandle; /* Handle to temporary POFF object */
TRACE(stderr, "[pass2]");
/* Create a handle to a temporary object to store new POFF program
* data.
*/
poffProgHandle = poffCreateProgHandle();
if (!poffProgHandle)
{
printf("Could not get POFF handle\n");
exit(1);
} /* end if */
/* Perform Local Optimizatin Initialization */
localOptimization(poffHandle, poffProgHandle);
/* Replace the original program data with the new program data */
poffReplaceProgData(poffHandle, poffProgHandle);
/* Release the temporary POFF object */
poffDestroyProgHandle(poffProgHandle);
} /* end pass2 */
/***********************************************************************/
static void pass3 (void)
{
poffProgHandle_t poffProgHandle; /* Handle to temporary POFF object */
TRACE(stderr, "[pass3]");
/* Create a handle to a temporary object to store new POFF program
* data.
*/
poffProgHandle = poffCreateProgHandle();
if (!poffProgHandle)
{
printf("Could not get POFF handle\n");
exit(1);
} /* end if */
/* Finalize program section, create relocation and line number
* sections.
*/
optFinalize(poffHandle, poffProgHandle);
/* Release the temporary POFF object */
poffDestroyProgHandle(poffProgHandle);
}
/***********************************************************************/
static void writePoffFile(const char *filename)
{
char optname [FNAME_SIZE+1];
FILE *optFile;
TRACE(stderr, "[writePoffFile]");
/* Open optimized p-code file -- Use .o extension */
(void)extension(filename, "o", optname, 1);
if (!(optFile = fopen(optname, "wb")))
{
printf("Error Opening %s\n", optname);
exit(1);
} /* end if */
/* Then write the new POFF file */
poffWriteFile(poffHandle, optFile);
/* Destroy the POFF object */
poffDestroyHandle(poffHandle);
/* Close the files used on writePoffFile */
(void)fclose(optFile);
} /* end writePoffFile */
/***********************************************************************/
