constant is a 32-bit constant. The constant can be a label (or a label expression).

5.1.4Example

Here is an example that uses an array and passes it to a function. It uses the array1c.c program (listed below) as a driver, not the driver.c program.

array1.asm

1%define ARRAY_SIZE 100

2%define NEW_LINE 10

3

4segment .data

13

14segment .text

15extern _puts, _printf, _scanf, _dump_line

16global _asm_main

17_asm_main:

21

22 ; initialize array to 100, 99, 98, 97, ...

39

40; prompt user for element index

41Prompt_loop:

57 InputOK:

80;

81; routine _print_array

82; C-callable routine that prints out elements of a double word array as

83; signed integers.

84; C prototype:

85; void print_array( const int * a, int n);

86; Parameters:

87; a - pointer to array to print out (at ebp+8 on stack)

88; n - number of integers to print out (at ebp+12 on stack)

92

93segment .text

94global _print_array

95_print_array:

105

1 #include <stdio.h>

2

3 int asm main( void );

4 void dump line( void );

5

6 int main()

7 {

8int ret status ;

9 ret status = asm main();

10return ret status ;

11}

12

13/

14function dump line

15 dumps all chars left in current line from input bu er

16/

17void dump line()

18{

19int ch;

20

21while( (ch = getchar()) != EOF && ch != ’\n’)

22/ null body / ;

23}

array1c.c