114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
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#include "test.h"
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/* ACK's C compiler uses EM's loi, sti, blm, or an inline loop to copy
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* these structs. The compiler doesn't call memcpy() or other
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* functions in libc, so this test passes without linking the CRT.
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*/
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struct c5 { /* not a whole number of words */
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char one[5];
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};
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struct ii { /* two words */
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int one;
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int two;
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};
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struct iii { /* three words */
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int one;
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int two;
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int three;
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};
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int equal5(char *a, char *b) { /* a, b must have 5 characters */
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int i;
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for (i = 0; i < 5; i++)
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if (a[i] != b[i]) return 0;
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return 1;
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}
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struct c5 make_c5(char *str) { /* str must have 5 characters */
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struct c5 out;
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int i;
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for (i = 0; i < 5; i++)
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out.one[i] = str[i];
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return out;
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}
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struct ii make_ii(int i, int j) {
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struct ii out;
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out.one = i;
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out.two = j;
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return out;
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}
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struct iii make_iii(struct ii in, int k) {
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struct iii out;
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out.one = in.one;
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out.two = in.two;
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out.three = k;
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return out;
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}
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struct c5 rotate_left_c5(struct c5 in) {
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int i;
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char c = in.one[0];
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/* Modifies our copy of _in_, not caller's copy. */
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for (i = 0; i < 4; i++)
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in.one[i] = in.one[i + 1];
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in.one[4] = c;
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return in;
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}
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struct iii rotate_left_iii(struct iii in) {
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int i = in.one;
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/* Modifies our copy of _in_, not caller's copy. */
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in.one = in.two;
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in.two = in.three;
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in.three = i;
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return in;
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}
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/* Bypasses the CRT, so there's no stdio. */
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void _m_a_i_n(void) {
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struct c5 earth, heart, dup_heart, rol_heart;
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struct ii pair, dup_pair;
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struct iii triple, dup_triple, rol_triple;
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earth = make_c5("earth");
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heart = make_c5("heart");
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dup_heart = heart;
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rol_heart = rotate_left_c5(heart);
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ASSERT(equal5(earth.one, "earth"));
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ASSERT(equal5(heart.one, "heart"));
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ASSERT(equal5(dup_heart.one, "heart"));
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ASSERT(equal5(rol_heart.one, "earth"));
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pair = make_ii(29, 31);
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dup_pair = pair;
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triple = make_iii(pair, -9);
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dup_triple = triple;
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rol_triple = rotate_left_iii(triple);
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ASSERT(pair.one == 29);
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ASSERT(pair.two == 31);
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ASSERT(dup_pair.one == 29);
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ASSERT(dup_pair.two == 31);
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ASSERT(triple.one == 29);
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ASSERT(triple.two == 31);
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ASSERT(triple.three == -9);
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ASSERT(dup_triple.one == 29);
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ASSERT(dup_triple.two == 31);
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ASSERT(dup_triple.three == -9);
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ASSERT(rol_triple.one == 31);
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ASSERT(rol_triple.two == -9);
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ASSERT(rol_triple.three == 29);
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finished();
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}
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