modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/compile/20040101-1.c (about)

     1  /* { dg-skip-if "not enough registers" { pdp11-*-* } } */
     2  
     3  typedef unsigned short uint16_t;
     4  typedef unsigned int uint32_t;
     5  
     6  #define CF (1<<0)
     7  #define PF (1<<2)
     8  #define AF (1<<4)
     9  #define ZF (1<<6)
    10  #define SF (1<<7)
    11  #define OF (1<<11)
    12  
    13  #define EFLAGS_BITS (CF|PF|AF|ZF|SF|OF)
    14  
    15  void test16(uint16_t x, uint32_t eflags)
    16  {
    17          uint16_t bsr_result;
    18          uint32_t bsr_eflags;
    19          uint16_t bsf_result;
    20          uint32_t bsf_eflags;
    21  
    22          __asm volatile(""
    23                  : "=&r" (bsr_result), "=&r" (bsr_eflags)
    24                  : "r" (x), "i" (~EFLAGS_BITS), "r" (eflags));
    25          __asm volatile(""
    26                  : "=&r" (bsf_result), "=&r" (bsf_eflags)
    27                  : "r" (x), "i" (~EFLAGS_BITS), "r" (eflags));
    28          printf("%08x %04x bsrw %02x %08x bsfw %02x %08x\n",
    29                  x, eflags, bsr_result, bsr_eflags, bsf_result, bsf_eflags);
    30  }