/* * Example: Bubble Sort (bubble.c): PowerPC target. * *  bubble.c    Includes: *                  function "main" - generated in default ".text" section; *                  function "sort" - generated in ".text2" section; *                  assembler macro "get_short"; *                  data "array" - copied from ROM to RAM for execution; *                  data "input_count" at location known during compilation. *  swap.s      Assembly function generated in ".text2" section. *  crt0.s      Assembly startup and termination module. */#include    <stdio.h>extern  void  swap (int array[]);/* "I/O registers" at address known during compilation. */#pragma section IOREG far-absolute RW address=0xf0000#pragma use_section IOREG input_count    short input_count;    static int test_count;              /* Uninitialized variable in .sbss. */    int array[] = {                     /* Initialized variable in          */        10, 9, 8, 7, 6, 5, 4, 3, 2, 1   /*  .data section.                  */    };asm short get_short (short *address_p)  /* Assembler macro: read and        */{                                       /*  byte-swap a 2-byte I/O port.    */%       reg     address_p;              /* Parameter passing method.        */        lha     r4,0(address_p)         /* I/O value *address_p to r4.      */        rlwimi  r3,r4,8,16,23           /* Move value's lsb into r3's msb.  */        rlwimi  r3,r4,24,24,31          /* Move value's msb into r3's lsb.  */}/* Generate subsequent code in section ".text2". */#pragma section CODE ".text2"static void sort (int array [], int count){    int change = 1;    int i;    while (change) {        change = 0;        for (i = 0; i < count - 1; i++) {            test_count ++;            if (array[i] > array[i+1]) {                swap (& array[i]);                change = 1;            }        }    }}/* Switch code generation back to default ".text" section, */#pragma section CODEvoid main (void){    int count;    int i;    count = get_short (& input_count);    printf ("\nInitial array: ");    for (i = 0; i < count; i++) printf ("%d ", array[i]);    sort (array, count);    printf ("\n\nNumber of tests: %d\n\nSorted array:  ", test_count);    for (i = 0; i < count; i++) printf ("%d ", array[i]);    printf ("\n\n");    exit (0);}