+++ /dev/null
-/* lkihx.c */
-
-/*
- * (C) Copyright 1989-1995
- * All Rights Reserved
- *
- * Alan R. Baldwin
- * 721 Berkeley St.
- * Kent, Ohio 44240
- */
-
-#include <stdio.h>
-#include <string.h>
-#include "aslink.h"
-
-/*)Module lkihx.c
- *
- * The module lkihx.c contains the function to
- * output the relocated object code in the
- * Intel Hex format.
- *
- * lkihx.c contains the following functions:
- * VOID hexRecord(addr, rtvalIndex)
- * VOID ihx(i)
- * VOID ihxEntendedLinearAddress(a)
- *
- * local variables: hexPageOverrun, lastHexAddr
- */
-
-/*Intel Hex Format
- * Record Mark Field - This field signifies the start of a
- * record, and consists of an ascii colon
- * (:).
- *
- * Record Length Field - This field consists of two ascii
- * characters which indicate the number of
- * data bytes in this record. The
- * characters are the result of converting
- * the number of bytes in binary to two
- * ascii characters, high digit first. An
- * End of File record contains two ascii
- * zeros in this field.
- *
- * Load Address Field - This field consists of the four ascii
- * characters which result from converting
- * the the binary value of the address in
- * which to begin loading this record. The
- * order is as follows:
- *
- * High digit of high byte of address.
- * Low digit of high byte of address.
- * High digit of low byte of address.
- * Low digit of low byte of address.
- *
- * In an End of File record this field con-
- * sists of either four ascii zeros or the
- * program entry address. Currently the
- * entry address option is not supported.
- *
- * Record Type Field - This field identifies the record type,
- * which is either 0 for data records or 1
- * for an End of File record. It consists
- * of two ascii characters, with the high
- * digit of the record type first, followed
- * by the low digit of the record type.
- *
- * Data Field - This field consists of the actual data,
- * converted to two ascii characters, high
- * digit first. There are no data bytes in
- * the End of File record.
- *
- * Checksum Field - The checksum field is the 8 bit binary
- * sum of the record length field, the load
- * address field, the record type field,
- * and the data field. This sum is then
- * negated (2's complement) and converted
- * to two ascii characters, high digit
- * first.
- */
-
-/* Static variable which holds the count of hex page overruns
- * (crossings of the 64kB boundary). Cleared at explicit extended
- * address output.
- */
-static int hexPageOverrun = 0;
-
-/* Global which holds the last (16 bit) address of hex record.
- * Cleared at begin of new area or when the extended address is output.
- */
-unsigned int lastHexAddr = 0;
-
-
-/*)Function hexRecord(addr, rtvalIndex)
- *
- * unsigned addr starting address of hex record
- * int rtvalIndex starting index into the rtval[] array
- *
- * The function hexRecord() outputs the relocated data
- * in the standard Intel Hex format (with inserting
- * the extended address record if necessary).
- *
- * local variables:
- * Addr_T chksum byte checksum
- * int i index for loops
- * int overrun temporary storage for hexPageOverrun
- * int bytes counter for bytes written
- *
- * global variables:
- * FILE * ofp output file handle
- * int rtcnt count of data words
- * int rtflg[] output the data flag
- * Addr_T rtval[] relocated data
- *
- * functions called:
- * int fprintf() c_library
- * ihxEntendedLinearAddress() lkihx.c
- * hexRecord() lkihx.c (recursion)
- *
- * side effects:
- * hexPageOverrun is eventually incremented,
- * lastHexAddr is updated
- */
-
-VOID
-hexRecord(unsigned addr, int rtvalIndex)
-{
- Addr_T chksum;
- int i, overrun, bytes;
-
- for (i = rtvalIndex, chksum = 0; i < rtcnt; i++) {
- if (rtflg[i]) {
- if (addr + ++chksum > 0xffff)
- break;
- }
- }
- if (chksum == 0)
- return; // nothing to output
-
- if (lastHexAddr > addr) {
- overrun = hexPageOverrun + 1;
- ihxEntendedLinearAddress(lastExtendedAddress + overrun);
- hexPageOverrun = overrun;
- hexRecord(addr, rtvalIndex);
- return;
- }
-
- lastHexAddr = addr;
- fprintf(ofp, ":%02X%04X00", chksum, addr);
- chksum += (addr >> 8) + (addr & 0xff);
- for (i = rtvalIndex, bytes = 0; i < rtcnt; i++) {
- if (rtflg[i]) {
- fprintf(ofp, "%02X", rtval[i]);
- chksum += rtval[i];
-#if 0
- if (addr + ++bytes > 0xffff) {
- if (rflag) {
- fprintf(ofp, "%02X\n", (0-chksum) & 0xff);
- overrun = hexPageOverrun + 1;
- ihxEntendedLinearAddress(lastExtendedAddress + overrun);
- hexPageOverrun = overrun;
- hexRecord(0, i + 1);
- return;
- } else {
- fprintf(stderr,
- "warning: extended linear address encountered; "
- "you probably want the -r flag.\n");
- }
- }
-#endif
- }
- }
- fprintf(ofp, "%02X\n", (0-chksum) & 0xff);
-}
-
-/*)Function ihx(i)
- *
- * int i 0 - process data
- * 1 - end of data
- *
- * The function ihx() calls the hexRecord() function for processing data
- * or writes the End of Data record to the file defined by ofp.
- *
- * local variables:
- * Addr_T n auxiliary variable
- *
- * global variables:
- * int hilo byte order
- * FILE * ofp output file handle
- * Addr_T rtval[] relocated data
- *
- * functions called:
- * VOID hexRecord() lkihx.c
- * int fprintf() c_library
- *
- * side effects:
- * The sequence of rtval[0], rtval[1] is eventually changed.
- */
-
-VOID
-ihx(i)
-{
- Addr_T n;
- if (i) {
- if (ap->a_flag & A_NOLOAD)
- return;
- if (hilo == 0) {
- n = rtval[0];
- rtval[0] = rtval[1];
- rtval[1] = n;
- }
- hexRecord((rtval[0]<<8) + rtval[1], 2);
- } else {
- fprintf(ofp, ":00000001FF\n");
- }
-}
-
-/*)Function newArea(i)
- * The function newArea() is called when processing of new area is started.
- * It resets the value of lastHexAddr.
- */
-
-VOID
-newArea()
-{
- lastHexAddr = 0;
-}
-
-/*)Function ihxEntendedLinearAddress(i)
- *
- * Addr_T i 16 bit extended linear address.
- *
- * The function ihxEntendedLinearAddress() writes an extended
- * linear address record (type 04) to the output file.
- *
- * local variables:
- * Addr_T chksum byte checksum
- *
- * global variables:
- * FILE * ofp output file handle
- *
- * functions called:
- * int fprintf() c_library
- *
- * side effects:
- * The data is output to the file defined by ofp.
- * hexPageOverrun and lastHexAddr is cleared
- */
-VOID
-ihxEntendedLinearAddress(Addr_T a)
-{
- Addr_T chksum;
-
- /* The checksum is the complement of the bytes in the
- * record: the 2 is record length, 4 is the extended linear
- * address record type, plus the two address bytes.
- */
- chksum = 2 + 4 + (a & 0xff) + ((a >> 8) & 0xff);
-
- fprintf(ofp, ":02000004%04X%02X\n", a & 0xffff, (0-chksum) & 0xff);
- hexPageOverrun = 0;
- lastHexAddr = 0;
-}
projects / fw / sdcc / blobdiff