/** Bitfield tests.
+ SDCC pic16 port currently does not support bitfields of size > 8,
+ so they are ifdefed out.
*/
#include <testfwk.h>
struct {
char c0_3 : 3;
char c3_5 : 5;
-} c_bitfield;
+} c_bf;
+#if !defined(SDCC_pic16)
struct {
int i0_7 : 7;
int i7_9 : 9;
-} i_bitfield;
+} i_bf;
struct {
long l0_7 : 7;
long l7_10 : 10;
long l17_15 : 15;
-} l_bitfield;
+} l_bf;
+
+struct {
+ unsigned int b0 : 1;
+ unsigned int b1 : 1;
+ unsigned int b2 : 1;
+ unsigned int b3 : 1;
+ unsigned int b4 : 1;
+ unsigned int b5 : 1;
+ unsigned int b6 : 1;
+ unsigned int b7 : 1;
+ unsigned int b8 : 1;
+ unsigned int b9 : 1;
+} sb_bf;
+#endif /* !SDCC_pic16 */
+
+struct {
+ unsigned int b0 : 1;
+ unsigned int b2 : 1;
+} size1a_bf;
+
+struct {
+ unsigned int b0 : 1;
+ unsigned int b1 : 1;
+ unsigned int : 0;
+} size1b_bf;
+
+struct {
+ unsigned int b0 : 1;
+ unsigned int b1 : 1;
+ unsigned int b2 : 6;
+} size1c_bf;
+
+struct {
+ unsigned int b0 : 1;
+ unsigned int : 0;
+ unsigned int b1 : 1;
+} size2a_bf;
+
+#if !defined(SDCC_pic16)
+struct {
+ unsigned int b0 : 1;
+ unsigned int b1 : 1;
+ unsigned int b2 : 1;
+ unsigned int b3 : 1;
+ unsigned int b4 : 1;
+ unsigned int b5 : 1;
+ unsigned int b6 : 1;
+ unsigned int b7 : 1;
+ unsigned int b8 : 1;
+ unsigned int b9 : 1;
+} size2b_bf;
+
+struct {
+ unsigned int b0 : 4;
+ unsigned int b1 : 5;
+} size2c_bf;
+
+struct {
+ unsigned int b0 : 12;
+ unsigned int b1 : 3;
+} size2d_bf;
+
+struct {
+ unsigned int b0 : 3;
+ unsigned int b1 : 12;
+} size3a_bf;
+
+
+struct {
+ signed int s0_7 : 7;
+ signed int s7_1 : 1;
+ signed int s8_9 : 9;
+} s_bf;
+#endif /* !SDCC_pic16 */
+
+void
+testBitfieldSizeof(void)
+{
+ /* Although bitfields are extremely implementation dependant, these
+ assertions should hold for all implementations with storage units
+ of 8 bits or larger (nearly universal).
+ */
+ ASSERT( sizeof(size1a_bf) >= 1);
+ ASSERT( sizeof(size1b_bf) >= 1);
+ ASSERT( sizeof(size1c_bf) >= 1);
+#if !defined(SDCC_pic16)
+ ASSERT( sizeof(size2b_bf) >= 2);
+ ASSERT( sizeof(size2c_bf) >= 2);
+ ASSERT( sizeof(size2d_bf) >= 2);
+ ASSERT( sizeof(size3a_bf) >= 2);
+ ASSERT( sizeof(size1a_bf) <= sizeof(size1b_bf));
+#endif /* !SDCC_pic16 */
+ /* Some SDCC specific assertions. SDCC uses 8 bit storage units.
+ Bitfields that are less than 8 bits, but would (due to earlier
+ bitfield declarations) span a storage unit boundary are
+ realigned to the next storage unit boundary. Bitfields of
+ 8 or greater bits are always aligned to start on a storage
+ unit boundary.
+ */
+#ifdef SDCC
+ ASSERT( sizeof(size1a_bf) == 1);
+ ASSERT( sizeof(size1b_bf) == 1);
+ ASSERT( sizeof(size1c_bf) == 1);
+ ASSERT( sizeof(size2a_bf) == 2);
+#if !defined(SDCC_pic16)
+ ASSERT( sizeof(size2b_bf) == 2);
+ ASSERT( sizeof(size2c_bf) == 2);
+ ASSERT( sizeof(size2d_bf) == 2);
+ ASSERT( sizeof(size3a_bf) == 3);
+#endif /* !SDCC_pic16 */
+#endif
+}
+
+
+void
+testBitfieldsSingleBitLiteral(void)
+{
+#if !defined(SDCC_pic16)
+ size2b_bf.b0 = 0;
+ size2b_bf.b1 = 0;
+ size2b_bf.b2 = 0;
+ size2b_bf.b3 = 0;
+ size2b_bf.b4 = 0;
+ size2b_bf.b5 = 0;
+ size2b_bf.b6 = 0;
+ size2b_bf.b7 = 0;
+ size2b_bf.b8 = 0;
+ size2b_bf.b9 = 0;
+
+ /* make sure modulo 2 truncation works */
+ size2b_bf.b0 = 0x3fe;
+ ASSERT(size2b_bf.b0==0);
+ ASSERT(size2b_bf.b1==0);
+ ASSERT(size2b_bf.b2==0);
+ ASSERT(size2b_bf.b3==0);
+ ASSERT(size2b_bf.b4==0);
+ ASSERT(size2b_bf.b5==0);
+ ASSERT(size2b_bf.b6==0);
+ ASSERT(size2b_bf.b7==0);
+ ASSERT(size2b_bf.b8==0);
+ ASSERT(size2b_bf.b9==0);
+ size2b_bf.b0 = 0x3ff;
+ ASSERT(size2b_bf.b0==1);
+ ASSERT(size2b_bf.b1==0);
+ ASSERT(size2b_bf.b2==0);
+ ASSERT(size2b_bf.b3==0);
+ ASSERT(size2b_bf.b4==0);
+ ASSERT(size2b_bf.b5==0);
+ ASSERT(size2b_bf.b6==0);
+ ASSERT(size2b_bf.b7==0);
+ ASSERT(size2b_bf.b8==0);
+ ASSERT(size2b_bf.b9==0);
+
+ /* make sure both bytes work */
+ size2b_bf.b9 = 0x3ff;
+ ASSERT(size2b_bf.b0==1);
+ ASSERT(size2b_bf.b1==0);
+ ASSERT(size2b_bf.b2==0);
+ ASSERT(size2b_bf.b3==0);
+ ASSERT(size2b_bf.b4==0);
+ ASSERT(size2b_bf.b5==0);
+ ASSERT(size2b_bf.b6==0);
+ ASSERT(size2b_bf.b7==0);
+ ASSERT(size2b_bf.b8==0);
+ ASSERT(size2b_bf.b9==1);
+#endif /* !SDCC_pic16 */
+}
+
+void
+testBitfieldsSingleBit(void)
+{
+#if !defined(SDCC_pic16)
+ volatile unsigned char c;
+
+ c = 0;
+ size2b_bf.b0 = c;
+ size2b_bf.b1 = c;
+ size2b_bf.b2 = c;
+ size2b_bf.b3 = c;
+ size2b_bf.b4 = c;
+ size2b_bf.b5 = c;
+ size2b_bf.b6 = c;
+ size2b_bf.b7 = c;
+ size2b_bf.b8 = c;
+ size2b_bf.b9 = c;
+
+ /* make sure modulo 2 truncation works */
+ c = 0xfe;
+ size2b_bf.b0 = c;
+ ASSERT(size2b_bf.b0==0);
+ ASSERT(size2b_bf.b1==0);
+ ASSERT(size2b_bf.b2==0);
+ ASSERT(size2b_bf.b3==0);
+ ASSERT(size2b_bf.b4==0);
+ ASSERT(size2b_bf.b5==0);
+ ASSERT(size2b_bf.b6==0);
+ ASSERT(size2b_bf.b7==0);
+ ASSERT(size2b_bf.b8==0);
+ ASSERT(size2b_bf.b9==0);
+ c++;
+ size2b_bf.b0 = c;
+ ASSERT(size2b_bf.b0==1);
+ ASSERT(size2b_bf.b1==0);
+ ASSERT(size2b_bf.b2==0);
+ ASSERT(size2b_bf.b3==0);
+ ASSERT(size2b_bf.b4==0);
+ ASSERT(size2b_bf.b5==0);
+ ASSERT(size2b_bf.b6==0);
+ ASSERT(size2b_bf.b7==0);
+ ASSERT(size2b_bf.b8==0);
+ ASSERT(size2b_bf.b9==0);
+
+ /* make sure both bytes work */
+ size2b_bf.b9 = c;
+ ASSERT(size2b_bf.b0==1);
+ ASSERT(size2b_bf.b1==0);
+ ASSERT(size2b_bf.b2==0);
+ ASSERT(size2b_bf.b3==0);
+ ASSERT(size2b_bf.b4==0);
+ ASSERT(size2b_bf.b5==0);
+ ASSERT(size2b_bf.b6==0);
+ ASSERT(size2b_bf.b7==0);
+ ASSERT(size2b_bf.b8==0);
+ ASSERT(size2b_bf.b9==1);
+#endif /* !SDCC_pic16 */
+}
+
+void
+testBitfieldsMultibitLiteral(void)
+{
+#if !defined(SDCC_pic16)
+ size2c_bf.b0 = 0xff; /* should truncate to 0x0f */
+ size2c_bf.b1 = 0;
+ ASSERT(size2c_bf.b0==0x0f);
+ ASSERT(size2c_bf.b1==0);
+
+ size2c_bf.b1 = 0xff; /* should truncate to 0x1f */
+ size2c_bf.b0 = 0;
+ ASSERT(size2c_bf.b0==0);
+ ASSERT(size2c_bf.b1==0x1f);
+
+ size2c_bf.b0 = 0xff; /* should truncate to 0x0f */
+ size2c_bf.b1 = 0xff; /* should truncate to 0x1f */
+ ASSERT(size2c_bf.b0==0x0f);
+ ASSERT(size2c_bf.b1==0x1f);
+
+ size2d_bf.b0 = 0xffff; /* should truncate to 0x0fff */
+ size2d_bf.b1 = 0;
+ ASSERT(size2d_bf.b0==0x0fff);
+ ASSERT(size2d_bf.b1==0);
+
+ size2d_bf.b1 = 0xffff; /* should truncate to 0x07 */
+ size2d_bf.b0 = 0;
+ ASSERT(size2d_bf.b0==0);
+ ASSERT(size2d_bf.b1==0x07);
+
+ size2d_bf.b0 = 0xffff; /* should truncate to 0x0fff */
+ size2d_bf.b1 = 0xffff; /* should truncate to 0x07 */
+ ASSERT(size2d_bf.b0==0x0fff);
+ ASSERT(size2d_bf.b1==0x07);
+
+ size2d_bf.b0 = 0x0321;
+ size2d_bf.b1 = 1;
+ ASSERT(size2d_bf.b0==0x0321);
+ ASSERT(size2d_bf.b1==1);
+
+ size2d_bf.b0 = 0x0a46;
+ size2d_bf.b1 = 5;
+ ASSERT(size2d_bf.b0==0x0a46);
+ ASSERT(size2d_bf.b1==5);
+#endif /* !SDCC_pic16 */
+}
+
+void
+testBitfieldsMultibit(void)
+{
+#if !defined(SDCC_pic16)
+ volatile int allones = 0xffff;
+ volatile int zero = 0;
+ volatile int x;
+
+ size2c_bf.b0 = allones; /* should truncate to 0x0f */
+ size2c_bf.b1 = zero;
+ ASSERT(size2c_bf.b0==0x0f);
+ ASSERT(size2c_bf.b1==0);
+
+ size2c_bf.b1 = allones; /* should truncate to 0x1f */
+ size2c_bf.b0 = zero;
+ ASSERT(size2c_bf.b0==0);
+ ASSERT(size2c_bf.b1==0x1f);
+
+ size2d_bf.b0 = allones; /* should truncate to 0x0fff */
+ size2d_bf.b1 = zero;
+ ASSERT(size2d_bf.b0==0x0fff);
+ ASSERT(size2d_bf.b1==0);
+
+ size2d_bf.b1 = allones; /* should truncate to 0x07 */
+ size2d_bf.b0 = zero;
+ ASSERT(size2d_bf.b0==0);
+ ASSERT(size2d_bf.b1==0x07);
+
+ x = 0x0321;
+ size2d_bf.b0 = x;
+ x = 1;
+ size2d_bf.b1 = x;
+ ASSERT(size2d_bf.b0==0x0321);
+ ASSERT(size2d_bf.b1==1);
+
+ x = 0x0a46;
+ size2d_bf.b0 = x;
+ x = 5;
+ size2d_bf.b1 = x;
+ ASSERT(size2d_bf.b0==0x0a46);
+ ASSERT(size2d_bf.b1==5);
+#endif /* !SDCC_pic16 */
+}
void
testBitfields(void)
{
-#if 0 // not yet
- c_bitfield.c0_3 = 2;
- c_bitfield.c3_5 = 3;
- ASSERT(*(char *)(&c_bitfield) == (2 + (3<<3)) );
+ c_bf.c0_3 = 2;
+ c_bf.c3_5 = 3;
+#if defined(PORT_HOST) && (defined(__ppc__) || defined(__PPC__))
+ /* bitfields on powerpc architecture are allocated from left to right */
+ ASSERT(*(char *)(&c_bf) == ((2<<(8-3)) + 3) );
+#else
+ ASSERT(*(char *)(&c_bf) == (2 + (3<<3)) );
+#endif
- i_bitfield.i0_7 = 23;
- i_bitfield.i7_9 = 234;
- ASSERT(*(int *)(&i_bitfield) == (23 + (234<<7)) );
+#if 0 // not yet
+ i_bf.i0_7 = 23;
+ i_bf.i7_9 = 234;
+ ASSERT(*(int *)(&i_bf) == (23 + (234<<7)) );
l_bitfield.l0_7 = 23;
l_bitfield.l7_10 = 234;
l_bitfield.l17_15 = 2345;
- ASSERT(*(long *)(&l_bitfield) == (23 + (234<<7) + (2345<<17)) );
+ ASSERT(*(long *)(&l_bf) == (23 + (234<<7) + (2345<<17)) );
#endif
}
+
+void
+testSignedBitfields(void)
+{
+#if !defined(SDCC_pic16)
+ s_bf.s0_7 = 0xf0;
+ s_bf.s7_1 = 1;
+ s_bf.s8_9 = 0xfff8;
+ ASSERT(s_bf.s0_7 == -16);
+ ASSERT(s_bf.s7_1 == - 1);
+ ASSERT(s_bf.s8_9 == - 8);
+ ASSERT(s_bf.s0_7 < 0);
+ ASSERT(s_bf.s7_1 < 0);
+ ASSERT(s_bf.s8_9 < 0);
+
+ s_bf.s0_7 = 0x3f;
+ s_bf.s7_1 = 2;
+ s_bf.s8_9 = 0x00ff;
+ ASSERT(s_bf.s0_7 == 0x3f);
+ ASSERT(s_bf.s7_1 == 0);
+ ASSERT(s_bf.s8_9 == 0xff);
+ ASSERT(s_bf.s0_7 > 0);
+ ASSERT(s_bf.s8_9 > 0);
+#endif /* !SDCC_pic16 */
+}
+
+/* test case for enhancement request #2291335 : Unnamed bit-field initialization */
+
+struct s2291335_1 {
+ int a : 2;
+ char : 2;
+ int b : 2;
+};
+
+struct s2291335_2 {
+ int a : 2;
+ char : 0;
+ int b : 2;
+};
+
+struct s2291335_1 gs2291335_1 = {1, 2};
+struct s2291335_2 gs2291335_2 = {1, 2};
+
+void
+__test2291335(void)
+{
+ struct s2291335_1 ls2291335_1 = {1, 2};
+ struct s2291335_2 ls2291335_2 = {1, 2};
+
+ ASSERT(gs2291335_1.a == 1);
+ ASSERT(gs2291335_1.b == 2);
+ ASSERT(gs2291335_2.a == 1);
+ ASSERT(gs2291335_2.b == 2);
+
+ ASSERT(ls2291335_1.a == 1);
+ ASSERT(ls2291335_1.b == 2);
+ ASSERT(ls2291335_2.a == 1);
+ ASSERT(ls2291335_2.b == 2);
+}
projects / fw / sdcc / blobdiff