gcc/testsuite/gcc.target/powerpc/ppc32-abi-dfp-1.c

   1 /* { dg-do run { target { powerpc*-*-* && { ilp32 && dfprt } } } } */
   2 /* { dg-options "-std=gnu99 -O2 -fno-strict-aliasing" } */
   3
   4 /* Testcase to check for ABI compliance of parameter passing
   5    for the PowerPC ELF ABI for decimal float values.  */
   6
   7 extern void abort (void);
   8 int failcnt = 0;
   9
  10 /* Support compiling the test to report individual failures; default is
  11    to abort as soon as a check fails.  */
  12 #ifdef DBG
  13 #include <stdio.h>
  14 #define FAILURE { printf ("failed at line %d\n", __LINE__); failcnt++; }
  15 #else
  16 #define FAILURE abort ();
  17 #endif
  18
  19 typedef struct
  20 {
  21   int pad;
  22   _Decimal32 d;
  23 } d32parm_t;
  24
  25 typedef struct
  26 {
  27   unsigned int gprs[8];
  28   double fprs[8];
  29 } reg_parms_t;
  30
  31 reg_parms_t gparms;
  32
  33
  34 /* Testcase could break on future gcc's, if parameter regs
  35    are changed before this asm.  */
  36
  37 #define save_parms(lparms)                              \
  38     asm volatile ("lis 11,gparms@ha\n\t"                \
  39                   "la 11,gparms@l(11)\n\t"              \
  40                   "st 3,0(11)\n\t"                      \
  41                   "st 4,4(11)\n\t"                      \
  42                   "st 5,8(11)\n\t"                      \
  43                   "st 6,12(11)\n\t"                     \
  44                   "st 7,16(11)\n\t"                     \
  45                   "st 8,20(11)\n\t"                     \
  46                   "st 9,24(11)\n\t"                     \
  47                   "st 10,28(11)\n\t"                    \
  48                   "stfd 1,32(11)\n\t"                   \
  49                   "stfd 2,40(11)\n\t"                   \
  50                   "stfd 3,48(11)\n\t"                   \
  51                   "stfd 4,56(11)\n\t"                   \
  52                   "stfd 5,64(11)\n\t"                   \
  53                   "stfd 6,72(11)\n\t"                   \
  54                   "stfd 7,80(11)\n\t"                   \
  55                   "stfd 8,88(11)\n\t":::"11", "memory");  \
  56                   lparms = gparms;
  57
  58 typedef struct sf
  59 {
  60   struct sf *backchain;
  61   int a1;
  62   unsigned int slot[200];
  63 } stack_frame_t;
  64
  65 /* Fill up floating point registers with double arguments, forcing
  66    decimal float arguments into the parameter save area.  */
  67 void __attribute__ ((noinline))
  68 func0 (double a1, double a2, double a3, double a4, double a5,
  69        double a6, double a7, double a8, _Decimal64 a9, _Decimal128 a10)
  70 {
  71   reg_parms_t lparms;
  72   stack_frame_t *sp;
  73
  74   save_parms (lparms);
  75   sp = __builtin_frame_address (0);
  76   sp = sp->backchain;
  77
  78   if (a1 != lparms.fprs[0]) FAILURE
  79   if (a2 != lparms.fprs[1]) FAILURE
  80   if (a3 != lparms.fprs[2]) FAILURE
  81   if (a4 != lparms.fprs[3]) FAILURE
  82   if (a5 != lparms.fprs[4]) FAILURE
  83   if (a6 != lparms.fprs[5]) FAILURE
  84   if (a7 != lparms.fprs[6]) FAILURE
  85   if (a8 != lparms.fprs[7]) FAILURE
  86   if (a9 != *(_Decimal64 *)&sp->slot[0]) FAILURE
  87   if (a10 != *(_Decimal128 *)&sp->slot[2]) FAILURE
  88 }
  89
  90 /* Alternate 64-bit and 128-bit decimal float arguments, checking that
  91    _Decimal128 is always passed in even/odd register pairs.  */
  92 void __attribute__ ((noinline))
  93 func1 (_Decimal64 a1, _Decimal128 a2, _Decimal64 a3, _Decimal128 a4,
  94        _Decimal64 a5, _Decimal128 a6, _Decimal64 a7, _Decimal128 a8)
  95 {
  96   reg_parms_t lparms;
  97   stack_frame_t *sp;
  98
  99   save_parms (lparms);
 100   sp = __builtin_frame_address (0);
 101   sp = sp->backchain;
 102
 103   if (a1 != *(_Decimal64 *)&lparms.fprs[0]) FAILURE     /* f1 */
 104   if (a2 != *(_Decimal128 *)&lparms.fprs[1]) FAILURE    /* f2 & f3 */
 105   if (a3 != *(_Decimal64 *)&lparms.fprs[3]) FAILURE     /* f4 */
 106   if (a4 != *(_Decimal128 *)&lparms.fprs[5]) FAILURE    /* f6 & f7 */
 107   if (a5 != *(_Decimal64 *)&lparms.fprs[7]) FAILURE     /* f8 */
 108   if (a6 != *(_Decimal128 *)&sp->slot[0]) FAILURE
 109   if (a7 != *(_Decimal64 *)&sp->slot[4]) FAILURE
 110   if (a8 != *(_Decimal128 *)&sp->slot[6]) FAILURE
 111 }
 112
 113 void __attribute__ ((noinline))
 114 func2 (_Decimal128 a1, _Decimal64 a2, _Decimal128 a3, _Decimal64 a4,
 115        _Decimal128 a5, _Decimal64 a6, _Decimal128 a7, _Decimal64 a8)
 116 {
 117   reg_parms_t lparms;
 118   stack_frame_t *sp;
 119
 120   save_parms (lparms);
 121   sp = __builtin_frame_address (0);
 122   sp = sp->backchain;
 123
 124   if (a1 != *(_Decimal128 *)&lparms.fprs[1]) FAILURE    /* f2 & f3 */
 125   if (a2 != *(_Decimal64 *)&lparms.fprs[3]) FAILURE     /* f4 */
 126   if (a3 != *(_Decimal128 *)&lparms.fprs[5]) FAILURE    /* f6 & f7 */
 127   if (a4 != *(_Decimal64 *)&lparms.fprs[7]) FAILURE     /* f8 */
 128   if (a5 != *(_Decimal128 *)&sp->slot[0]) FAILURE
 129   if (a6 != *(_Decimal64 *)&sp->slot[4]) FAILURE
 130   if (a7 != *(_Decimal128 *)&sp->slot[6]) FAILURE
 131   if (a8 != *(_Decimal64 *)&sp->slot[10]) FAILURE
 132 }
 133
 134 void __attribute__ ((noinline))
 135 func3 (_Decimal64 a1, _Decimal128 a2, _Decimal64 a3, _Decimal128 a4,
 136        _Decimal64 a5)
 137 {
 138   reg_parms_t lparms;
 139   stack_frame_t *sp;
 140
 141   save_parms (lparms);
 142   sp = __builtin_frame_address (0);
 143   sp = sp->backchain;
 144
 145   if (a1 != *(_Decimal64 *)&lparms.fprs[0]) FAILURE     /* f1 */
 146   if (a2 != *(_Decimal128 *)&lparms.fprs[1]) FAILURE    /* f2 & f3 */
 147   if (a3 != *(_Decimal64 *)&lparms.fprs[3]) FAILURE     /* f4 */
 148   if (a4 != *(_Decimal128 *)&lparms.fprs[5]) FAILURE    /* f6 & f7 */
 149   if (a5 != *(_Decimal128 *)&sp->slot[0]) FAILURE
 150 }
 151
 152 void __attribute__ ((noinline))
 153 func4 (_Decimal32 a1, _Decimal32 a2, _Decimal32 a3, _Decimal32 a4,
 154        _Decimal32 a5, _Decimal32 a6, _Decimal32 a7, _Decimal32 a8,
 155        _Decimal32 a9, _Decimal32 a10, _Decimal32 a11, _Decimal32 a12,
 156        _Decimal32 a13, _Decimal32 a14, _Decimal32 a15, _Decimal32 a16)
 157 {
 158   reg_parms_t lparms;
 159   stack_frame_t *sp;
 160
 161   save_parms (lparms);
 162   sp = __builtin_frame_address (0);
 163   sp = sp->backchain;
 164
 165   /* _Decimal32 is passed in the lower half of an FPR, or in parameter slot.  */
 166   if (a1 != ((d32parm_t *)&lparms.fprs[0])->d) FAILURE          /* f1  */
 167   if (a2 != ((d32parm_t *)&lparms.fprs[1])->d) FAILURE          /* f2  */
 168   if (a3 != ((d32parm_t *)&lparms.fprs[2])->d) FAILURE          /* f3  */
 169   if (a4 != ((d32parm_t *)&lparms.fprs[3])->d) FAILURE          /* f4  */
 170   if (a5 != ((d32parm_t *)&lparms.fprs[4])->d) FAILURE          /* f5  */
 171   if (a6 != ((d32parm_t *)&lparms.fprs[5])->d) FAILURE          /* f6  */
 172   if (a7 != ((d32parm_t *)&lparms.fprs[6])->d) FAILURE          /* f7  */
 173   if (a8 != ((d32parm_t *)&lparms.fprs[7])->d) FAILURE          /* f8  */
 174   if (a9 != *(_Decimal32 *)&sp->slot[0]) FAILURE
 175   if (a10 != *(_Decimal32 *)&sp->slot[1]) FAILURE
 176   if (a11 != *(_Decimal32 *)&sp->slot[2]) FAILURE
 177   if (a12 != *(_Decimal32 *)&sp->slot[3]) FAILURE
 178   if (a13 != *(_Decimal32 *)&sp->slot[4]) FAILURE
 179   if (a14 != *(_Decimal32 *)&sp->slot[5]) FAILURE
 180   if (a15 != *(_Decimal32 *)&sp->slot[6]) FAILURE
 181   if (a16 != *(_Decimal32 *)&sp->slot[7]) FAILURE
 182 }
 183
 184 void __attribute__ ((noinline))
 185 func5 (_Decimal32 a1, _Decimal64 a2, _Decimal128 a3,
 186        _Decimal32 a4, _Decimal64 a5, _Decimal128 a6,
 187        _Decimal32 a7, _Decimal64 a8, _Decimal128 a9,
 188        _Decimal32 a10, _Decimal64 a11, _Decimal128 a12)
 189 {
 190   reg_parms_t lparms;
 191   stack_frame_t *sp;
 192
 193   save_parms (lparms);
 194   sp = __builtin_frame_address (0);
 195   sp = sp->backchain;
 196
 197   if (a1 != ((d32parm_t *)&lparms.fprs[0])->d) FAILURE          /* f1      */
 198   if (a2 != *(_Decimal64 *)&lparms.fprs[1]) FAILURE             /* f2      */
 199   if (a3 != *(_Decimal128 *)&lparms.fprs[3]) FAILURE            /* f4 & f5 */
 200   if (a4 != ((d32parm_t *)&lparms.fprs[5])->d) FAILURE          /* f6      */
 201   if (a5 != *(_Decimal64 *)&lparms.fprs[6]) FAILURE             /* f7      */
 202
 203   if (a6 != *(_Decimal128 *)&sp->slot[0]) FAILURE
 204   if (a7 != *(_Decimal32 *)&sp->slot[4]) FAILURE
 205   if (a8 != *(_Decimal64 *)&sp->slot[6]) FAILURE
 206   if (a9 != *(_Decimal128 *)&sp->slot[8]) FAILURE
 207   if (a10 != *(_Decimal32 *)&sp->slot[12]) FAILURE
 208   if (a11 != *(_Decimal64 *)&sp->slot[14]) FAILURE
 209   if (a12 != *(_Decimal128 *)&sp->slot[16]) FAILURE
 210 }
 211
 212 int
 213 main ()
 214 {
 215   func0 (1., 2., 3., 4., 5., 6., 7., 8., 9.dd, 10.dl);
 216   func1 (1.dd, 2.dl, 3.dd, 4.dl, 5.dd, 6.dl, 7.dd, 8.dl);
 217   func2 (1.dl, 2.dd, 3.dl, 4.dd, 5.dl, 6.dd, 7.dl, 8.dd);
 218   func3 (1.dd, 2.dl, 3.dd, 4.dl, 5.dl);
 219   func4 (501.2df, 502.2df, 503.2df, 504.2df, 505.2df, 506.2df, 507.2df,
 220          508.2df, 509.2df, 510.2df, 511.2df, 512.2df, 513.2df, 514.2df,
 221          515.2df, 516.2df);
 222   func5 (601.2df, 602.2dd, 603.2dl, 604.2df, 605.2dd, 606.2dl,
 223          607.2df, 608.2dd, 609.2dl, 610.2df, 611.2dd, 612.2dl);
 224
 225   if (failcnt != 0)
 226     abort ();
 227
 228   return 0;
 229 }