compiler-rt/test/builtins/Unit/arm/call_apsr.h

   1 #ifndef CALL_APSR_H
   2 #define CALL_APSR_H
   3
   4 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
   5
   6 union cpsr {
   7   struct {
   8     uint32_t filler : 28;
   9     uint32_t v : 1;
  10     uint32_t c : 1;
  11     uint32_t z : 1;
  12     uint32_t n : 1;
  13   } flags;
  14   uint32_t value;
  15 };
  16
  17 #else
  18
  19 union cpsr {
  20   struct {
  21     uint32_t n : 1;
  22     uint32_t z : 1;
  23     uint32_t c : 1;
  24     uint32_t v : 1;
  25     uint32_t filler : 28;
  26   } flags;
  27   uint32_t value;
  28 };
  29
  30 #endif
  31
  32 __attribute__((noinline, pcs("aapcs"))) static uint32_t call_apsr_f(float a, float b,
  33                                                                     __attribute__((pcs("aapcs"))) void (*fn)(float, float)) {
  34   uint32_t result;
  35   fn(a, b);
  36   asm volatile("mrs %0, apsr"
  37                : "=r"(result));
  38   return result;
  39 }
  40
  41 __attribute__((noinline, pcs("aapcs"))) static uint32_t call_apsr_d(double a, double b,
  42                                                                     __attribute__((pcs("aapcs"))) void (*fn)(double, double)) {
  43   uint32_t result;
  44   fn(a, b);
  45   asm volatile("mrs %0, apsr"
  46                : "=r"(result));
  47   return result;
  48 }
  49
  50 #endif // CALL_APSR_H