X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=support%2Fregression%2Ftests%2Fbitfields.c;h=1d3b2f2c2d2dc88f7392ed68f9a8ae3c22312d4a;hb=ca46a6e3d9ac29d4d4943d2873e725b9703f5aed;hp=13f81b9ae9570c6b43e409fe79ac45499ea81ff3;hpb=58cd074c23701c28549f8ae3004e43a9b6d473a5;p=fw%2Fsdcc

diff --git a/support/regression/tests/bitfields.c b/support/regression/tests/bitfields.c
index 13f81b9a..1d3b2f2c 100644
--- a/support/regression/tests/bitfields.c
+++ b/support/regression/tests/bitfields.c
@@ -1,39 +1,389 @@
 /** 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 */
+}