* output the relocated object code in the
* Intel Hex format.
*
- * lkihx.c contains the following function:
+ * lkihx.c contains the following functions:
+ * VOID hexRecord(addr, rtvalIndex)
* VOID ihx(i)
+ * VOID ihxEntendedLinearAddress(a)
*
- * lkihx.c contains no local variables.
+ * local variables: hexPageOverrun, lastHexAddr
*/
/*Intel Hex Format
* first.
*/
-/*)Function ihx(i)
+/* 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)
*
- * int i 0 - process data
- * 1 - end of data
+ * unsigned addr starting address of hex record
+ * int rtvalIndex starting index into the rtval[] array
*
- * The function ihx() outputs the relocated data
- * in the standard Intel Hex format.
+ * 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:
- * int hilo byte order
* FILE * ofp output file handle
* int rtcnt count of data words
* int rtflg[] output the data flag
*
* functions called:
* int fprintf() c_library
+ * ihxEntendedLinearAddress() lkihx.c
+ * hexRecord() lkihx.c (recursion)
*
* side effects:
- * The data is output to the file defined by ofp.
+ * 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 (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");
+ }
+ }
+ }
+ }
+ 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)
{
- register Addr_T chksum;
- int byte, bytes, address=0;
+ Addr_T n;
if (i) {
if (hilo == 0) {
- chksum = rtval[0];
+ n = rtval[0];
rtval[0] = rtval[1];
- rtval[1] = chksum;
- }
- for (i = 0, chksum = -2; i < rtcnt; i++) {
- if (rtflg[i])
- chksum++;
+ rtval[1] = n;
}
- fprintf(ofp, ":%02X", chksum);
- // how much bytes?
- for (i=0, bytes=0; i<rtcnt; i++) {
- if (rtflg[i]) {
- bytes++;
- }
- }
- byte=0;
- for (i = 0; i < rtcnt ; i++) {
- if (rtflg[i]) {
- switch (byte) {
- case 0:
- address=rtval[0]<<8;
- break;
- case 1:
- address+=rtval[1];
- if ((address+bytes)>0xffff) {
- fprintf (stderr, "64k boundary cross at %04x\n", address);
- }
- break;
- }
- fprintf(ofp, "%02X", rtval[i]);
- chksum += rtval[i];
- byte++;
- }
- if (i == 1) {
- fprintf(ofp, "00");
- }
- }
- fprintf(ofp, "%02X\n", (0-chksum) & 0xff);
+ 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.
*
* side effects:
* The data is output to the file defined by ofp.
+ * hexPageOverrun and lastHexAddr is cleared
*/
VOID
ihxEntendedLinearAddress(Addr_T a)
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 / commitdiff