531 lines
14 KiB
C
531 lines
14 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/**************************************************************************
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* TESTS :
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* function returning large structures, which go on the stack
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* functions returning varied sized structs which go on in the registers.
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***************************************************************************/
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/* A large structure (> 64 bits) used to test passing large structures as
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* parameters
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*/
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struct array_rep_info_t {
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int next_index[10];
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int values[10];
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int head;
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};
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/*****************************************************************************
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* Small structures ( <= 64 bits). These are used to test passing small
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* structures as parameters and test argument size promotion.
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*****************************************************************************/
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/* 64 bits
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*/
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struct small_rep_info_t {
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int value;
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int head;
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};
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/* 6 bits : really fits in 8 bits and is promoted to 32 bits
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*/
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struct bit_flags_t {
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unsigned alpha :1;
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unsigned beta :1;
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unsigned gamma :1;
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unsigned delta :1;
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unsigned epsilon :1;
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unsigned omega :1;
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};
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/* 22 bits : really fits in 40 bits and is promoted to 64 bits
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*/
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struct bit_flags_combo_t {
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unsigned alpha :1;
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unsigned beta :1;
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char ch1;
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unsigned gamma :1;
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unsigned delta :1;
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char ch2;
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unsigned epsilon :1;
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unsigned omega :1;
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};
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/* 64 bits
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*/
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struct one_double_t {
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double double1;
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};
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/* 64 bits
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*/
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struct two_floats_t {
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float float1;
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float float2;
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};
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/* 24 bits : promoted to 32 bits
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*/
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struct three_char_t {
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char ch1;
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char ch2;
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char ch3;
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};
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/* 40 bits : promoted to 64 bits
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*/
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struct five_char_t {
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char ch1;
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char ch2;
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char ch3;
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char ch4;
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char ch5;
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};
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/* 40 bits : promoted to 64 bits
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*/
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struct int_char_combo_t {
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int int1;
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char ch1;
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};
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/*****************************************************************
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* LOOP_COUNT :
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* A do nothing function. Used to provide a point at which calls can be made.
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*****************************************************************/
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void loop_count () {
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int index;
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for (index=0; index<4; index++);
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}
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/*****************************************************************
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* INIT_BIT_FLAGS :
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* Initializes a bit_flags_t structure. Can call this function see
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* the call command behavior when integer arguments do not fit into
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* registers and must be placed on the stack.
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* OUT struct bit_flags_t *bit_flags -- structure to be filled
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* IN unsigned a -- 0 or 1
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* IN unsigned b -- 0 or 1
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* IN unsigned g -- 0 or 1
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* IN unsigned d -- 0 or 1
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* IN unsigned e -- 0 or 1
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* IN unsigned o -- 0 or 1
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*****************************************************************/
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void init_bit_flags (bit_flags,a,b,g,d,e,o)
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struct bit_flags_t *bit_flags;
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unsigned a;
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unsigned b;
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unsigned g;
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unsigned d;
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unsigned e;
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unsigned o;
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{
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bit_flags->alpha = a;
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bit_flags->beta = b;
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bit_flags->gamma = g;
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bit_flags->delta = d;
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bit_flags->epsilon = e;
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bit_flags->omega = o;
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}
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/*****************************************************************
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* INIT_BIT_FLAGS_COMBO :
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* Initializes a bit_flags_combo_t structure. Can call this function
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* to see the call command behavior when integer and character arguments
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* do not fit into registers and must be placed on the stack.
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* OUT struct bit_flags_combo_t *bit_flags_combo -- structure to fill
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* IN unsigned a -- 0 or 1
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* IN unsigned b -- 0 or 1
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* IN char ch1
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* IN unsigned g -- 0 or 1
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* IN unsigned d -- 0 or 1
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* IN char ch2
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* IN unsigned e -- 0 or 1
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* IN unsigned o -- 0 or 1
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*****************************************************************/
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void init_bit_flags_combo (bit_flags_combo, a, b, ch1, g, d, ch2, e, o)
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struct bit_flags_combo_t *bit_flags_combo;
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unsigned a;
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unsigned b;
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char ch1;
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unsigned g;
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unsigned d;
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char ch2;
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unsigned e;
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unsigned o;
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{
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bit_flags_combo->alpha = a;
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bit_flags_combo->beta = b;
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bit_flags_combo->ch1 = ch1;
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bit_flags_combo->gamma = g;
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bit_flags_combo->delta = d;
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bit_flags_combo->ch2 = ch2;
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bit_flags_combo->epsilon = e;
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bit_flags_combo->omega = o;
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}
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/*****************************************************************
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* INIT_ONE_DOUBLE :
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* OUT struct one_double_t *one_double -- structure to fill
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* IN double init_val
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*****************************************************************/
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void init_one_double (one_double, init_val)
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struct one_double_t *one_double;
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double init_val;
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{
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one_double->double1 = init_val;
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}
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/*****************************************************************
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* INIT_TWO_FLOATS :
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* OUT struct two_floats_t *two_floats -- structure to be filled
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* IN float init_val1
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* IN float init_val2
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*****************************************************************/
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void init_two_floats (two_floats, init_val1, init_val2)
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struct two_floats_t *two_floats;
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float init_val1;
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float init_val2;
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{
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two_floats->float1 = init_val1;
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two_floats->float2 = init_val2;
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}
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/*****************************************************************
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* INIT_THREE_CHARS :
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* OUT struct three_char_t *three_char -- structure to be filled
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* IN char init_val1
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* IN char init_val2
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* IN char init_val3
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*****************************************************************/
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void init_three_chars ( three_char, init_val1, init_val2, init_val3)
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struct three_char_t *three_char;
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char init_val1;
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char init_val2;
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char init_val3;
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{
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three_char->ch1 = init_val1;
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three_char->ch2 = init_val2;
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three_char->ch3 = init_val3;
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}
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/*****************************************************************
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* INIT_FIVE_CHARS :
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* OUT struct five_char_t *five_char -- structure to be filled
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* IN char init_val1
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* IN char init_val2
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* IN char init_val3
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* IN char init_val4
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* IN char init_val5
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*****************************************************************/
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void init_five_chars ( five_char, init_val1, init_val2, init_val3, init_val4, init_val5)
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struct five_char_t *five_char;
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char init_val1;
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char init_val2;
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char init_val3;
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char init_val4;
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char init_val5;
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{
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five_char->ch1 = init_val1;
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five_char->ch2 = init_val2;
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five_char->ch3 = init_val3;
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five_char->ch4 = init_val4;
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five_char->ch5 = init_val5;
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}
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/*****************************************************************
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* INIT_INT_CHAR_COMBO :
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* OUT struct int_char_combo_t *combo -- structure to be filled
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* IN int init_val1
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* IN char init_val2
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*****************************************************************/
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void init_int_char_combo ( combo, init_val1, init_val2)
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struct int_char_combo_t *combo;
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int init_val1;
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char init_val2;
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{
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combo->int1 = init_val1;
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combo->ch1 = init_val2;
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}
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/*****************************************************************
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* INIT_STRUCT_REP :
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* OUT struct small_rep_into_t *small_struct -- structure to be filled
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* IN int seed
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*****************************************************************/
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void init_struct_rep( small_struct, seed)
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struct small_rep_info_t *small_struct;
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int seed;
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{
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small_struct->value = 2 + (seed*2);
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small_struct->head = 0;
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}
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/*****************************************************************
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* PRINT_BIT_FLAGS :
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* IN struct bit_flags_t bit_flags
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****************************************************************/
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struct bit_flags_t print_bit_flags ( bit_flags)
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struct bit_flags_t bit_flags;
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{
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if (bit_flags.alpha) printf("alpha\n");
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if (bit_flags.beta) printf("beta\n");
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if (bit_flags.gamma) printf("gamma\n");
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if (bit_flags.delta) printf("delta\n");
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if (bit_flags.epsilon) printf("epsilon\n");
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if (bit_flags.omega) printf("omega\n");
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return bit_flags;
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}
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/*****************************************************************
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* PRINT_BIT_FLAGS_COMBO :
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* IN struct bit_flags_combo_t bit_flags_combo
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****************************************************************/
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struct bit_flags_combo_t print_bit_flags_combo ( bit_flags_combo )
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struct bit_flags_combo_t bit_flags_combo;
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{
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if (bit_flags_combo.alpha) printf("alpha\n");
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if (bit_flags_combo.beta) printf("beta\n");
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if (bit_flags_combo.gamma) printf("gamma\n");
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if (bit_flags_combo.delta) printf("delta\n");
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if (bit_flags_combo.epsilon) printf("epsilon\n");
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if (bit_flags_combo.omega) printf("omega\n");
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printf("ch1: %c\tch2: %c\n", bit_flags_combo.ch1, bit_flags_combo.ch2);
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return bit_flags_combo;
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}
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/*****************************************************************
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* PRINT_ONE_DOUBLE :
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* IN struct one_double_t one_double
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****************************************************************/
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struct one_double_t print_one_double ( one_double )
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struct one_double_t one_double;
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{
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printf("Contents of one_double_t: \n\n");
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printf("%f\n", one_double.double1);
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return one_double;
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}
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/*****************************************************************
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* PRINT_TWO_FLOATS :
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* IN struct two_floats_t two_floats
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****************************************************************/
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struct two_floats_t print_two_floats ( two_floats )
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struct two_floats_t two_floats;
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{
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printf("Contents of two_floats_t: \n\n");
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printf("%f\t%f\n", two_floats.float1, two_floats.float2);
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return two_floats;
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}
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/*****************************************************************
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* PRINT_THREE_CHARS :
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* IN struct three_char_t three_char
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****************************************************************/
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struct three_char_t print_three_chars ( three_char )
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struct three_char_t three_char;
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{
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printf("Contents of three_char_t: \n\n");
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printf("%c\t%c\t%c\n", three_char.ch1, three_char.ch2, three_char.ch3);
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return three_char;
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}
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/*****************************************************************
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||
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* PRINT_FIVE_CHARS :
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* IN struct five_char_t five_char
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****************************************************************/
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struct five_char_t print_five_chars ( five_char )
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struct five_char_t five_char;
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{
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printf("Contents of five_char_t: \n\n");
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printf("%c\t%c\t%c\t%c\t%c\n", five_char.ch1, five_char.ch2,
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five_char.ch3, five_char.ch4,
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five_char.ch5);
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return five_char;
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}
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/*****************************************************************
|
||
|
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* PRINT_INT_CHAR_COMBO :
|
||
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* IN struct int_char_combo_t int_char_combo
|
||
|
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****************************************************************/
|
||
|
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struct int_char_combo_t print_int_char_combo ( int_char_combo )
|
||
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struct int_char_combo_t int_char_combo;
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||
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{
|
||
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|
||
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printf("Contents of int_char_combo_t: \n\n");
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||
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printf("%d\t%c\n", int_char_combo.int1, int_char_combo.ch1);
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||
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return int_char_combo;
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||
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|
||
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}
|
||
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|
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|
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/*****************************************************************
|
||
|
|
* PRINT_STRUCT_REP :
|
||
|
|
****************************************************************/
|
||
|
|
struct small_rep_info_t print_struct_rep( struct1 )
|
||
|
|
struct small_rep_info_t struct1;
|
||
|
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|
||
|
|
{
|
||
|
|
|
||
|
|
printf("Contents of struct1: \n\n");
|
||
|
|
printf("%10d%10d\n", struct1.value, struct1.head);
|
||
|
|
struct1.value =+5;
|
||
|
|
|
||
|
|
return struct1;
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
struct array_rep_info_t print_one_large_struct( linked_list1 )
|
||
|
|
struct array_rep_info_t linked_list1;
|
||
|
|
{
|
||
|
|
|
||
|
|
|
||
|
|
printf("%10d%10d\n", linked_list1.values[0],
|
||
|
|
linked_list1.next_index[0]);
|
||
|
|
|
||
|
|
return linked_list1;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/*****************************************************************
|
||
|
|
* INIT_ARRAY_REP :
|
||
|
|
* IN struct array_rep_info_t *linked_list
|
||
|
|
* IN int seed
|
||
|
|
****************************************************************/
|
||
|
|
void init_array_rep( linked_list, seed )
|
||
|
|
struct array_rep_info_t *linked_list;
|
||
|
|
int seed;
|
||
|
|
|
||
|
|
{
|
||
|
|
|
||
|
|
int index;
|
||
|
|
|
||
|
|
for (index = 0; index < 10; index++) {
|
||
|
|
|
||
|
|
linked_list->values[index] = (2*index) + (seed*2);
|
||
|
|
linked_list->next_index[index] = index + 1;
|
||
|
|
}
|
||
|
|
linked_list->head = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int main () {
|
||
|
|
|
||
|
|
/* variables for large structure testing
|
||
|
|
*/
|
||
|
|
int number = 10;
|
||
|
|
struct array_rep_info_t *list1;
|
||
|
|
|
||
|
|
/* variables for testing a small structures and a very long argument list
|
||
|
|
*/
|
||
|
|
struct small_rep_info_t *struct1;
|
||
|
|
struct bit_flags_t *flags;
|
||
|
|
struct bit_flags_combo_t *flags_combo;
|
||
|
|
struct three_char_t *three_char;
|
||
|
|
struct five_char_t *five_char;
|
||
|
|
struct int_char_combo_t *int_char_combo;
|
||
|
|
struct one_double_t *d1;
|
||
|
|
struct two_floats_t *f3;
|
||
|
|
|
||
|
|
|
||
|
|
/* Allocate space for large structures
|
||
|
|
*/
|
||
|
|
list1 = (struct array_rep_info_t *)malloc(sizeof(struct array_rep_info_t));
|
||
|
|
|
||
|
|
/* Initialize large structures
|
||
|
|
*/
|
||
|
|
init_array_rep(list1, 2);
|
||
|
|
|
||
|
|
/* Print large structures
|
||
|
|
*/
|
||
|
|
print_one_large_struct(*list1);
|
||
|
|
|
||
|
|
/* Allocate space for small structures
|
||
|
|
*/
|
||
|
|
struct1 = (struct small_rep_info_t *)malloc(sizeof(struct small_rep_info_t));
|
||
|
|
flags = (struct bit_flags_t *)malloc(sizeof(struct bit_flags_t));
|
||
|
|
flags_combo = (struct bit_flags_combo_t *)malloc(sizeof(struct bit_flags_combo_t));
|
||
|
|
three_char = (struct three_char_t *)malloc(sizeof(struct three_char_t));
|
||
|
|
five_char = (struct five_char_t *)malloc(sizeof(struct five_char_t));
|
||
|
|
int_char_combo = (struct int_char_combo_t *)malloc(sizeof(struct int_char_combo_t));
|
||
|
|
|
||
|
|
d1 = (struct one_double_t *)malloc(sizeof(struct one_double_t));
|
||
|
|
f3 = (struct two_floats_t *)malloc(sizeof(struct two_floats_t));
|
||
|
|
|
||
|
|
/* Initialize small structures
|
||
|
|
*/
|
||
|
|
init_one_double ( d1, 1.11111);
|
||
|
|
init_two_floats ( f3, -2.345, 1.0);
|
||
|
|
init_bit_flags(flags, (unsigned)1, (unsigned)0, (unsigned)1,
|
||
|
|
(unsigned)0, (unsigned)1, (unsigned)0 );
|
||
|
|
init_bit_flags_combo(flags_combo, (unsigned)1, (unsigned)0, 'y',
|
||
|
|
(unsigned)1, (unsigned)0, 'n',
|
||
|
|
(unsigned)1, (unsigned)0 );
|
||
|
|
init_three_chars(three_char, 'x', 'y', 'z');
|
||
|
|
init_five_chars(five_char, 'h', 'e', 'l', 'l', 'o');
|
||
|
|
init_int_char_combo(int_char_combo, 13, '!');
|
||
|
|
init_struct_rep(struct1, 10);
|
||
|
|
|
||
|
|
|
||
|
|
/* Print small structures
|
||
|
|
*/
|
||
|
|
print_one_double(*d1);
|
||
|
|
print_two_floats(*f3);
|
||
|
|
print_bit_flags(*flags);
|
||
|
|
print_bit_flags_combo(*flags_combo);
|
||
|
|
print_three_chars(*three_char);
|
||
|
|
print_five_chars(*five_char);
|
||
|
|
print_int_char_combo(*int_char_combo);
|
||
|
|
print_struct_rep(*struct1);
|
||
|
|
|
||
|
|
loop_count();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|