tests/fpu: Add tests for fsel and fcmpu

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
pull/245/head
Paul Mackerras 4 years ago
parent 49f3d1e77a
commit e1bbb786c0

@ -1148,6 +1148,102 @@ int fpu_test_18(void)
return trapit(0, test18); return trapit(0, test18);
} }


#define RES_B 0x7ffaaaaaaaaaaaaa
#define RES_C 0x000bbbbbbbbbbbbb

struct selvals {
unsigned long val;
unsigned long result;
} selvals[] = {
{ 0x0000000000000000, RES_C },
{ 0x8000000000000000, RES_C },
{ 0x3ff0000000000000, RES_C },
{ 0xbff0000000000000, RES_B },
{ 0x7ff0000000000000, RES_C },
{ 0xfff0000000000000, RES_B },
{ 0x7ff8000000000000, RES_B },
{ 0xfff8000000000000, RES_B },
{ 0x0000000000000001, RES_C },
{ 0x8000000000000001, RES_B },
{ 0xffffffffffffffff, RES_B },
};

int test19(long arg)
{
long i;
unsigned long result;
unsigned long frb = RES_B;
unsigned long frc = RES_C;
struct selvals *vp = selvals;

for (i = 0; i < sizeof(selvals) / sizeof(selvals[0]); ++i, ++vp) {
asm("lfd 6,0(%0); lfd 10,0(%1); lfd 22,0(%2); fsel 0,6,22,10; stfd 0,0(%3)"
: : "b" (&vp->val), "b" (&frb), "b" (&frc), "b" (&result) : "memory");
if (result != vp->result) {
print_hex(i, 2, " ");
print_hex(result, 16, " ");
return i + 1;
}
}
return 0;
}

int fpu_test_19(void)
{
enable_fp();
return trapit(0, test19);
}

#define LT 8
#define GT 4
#define EQ 2
#define UN 1

struct cmpvals {
unsigned long vala, valb;
unsigned long result;
} cmpvals[] = {
{ 0x0000000000000000, 0x0000000000000000, EQ },
{ 0x8000000000000000, 0x0000000000000000, EQ },
{ 0x3ff0000000000000, 0x3ff0000000000000, EQ },
{ 0x3ff0000000000001, 0x3ff0000000000000, GT },
{ 0x3ff0000000000000, 0x3ff0000000000001, LT },
{ 0xbff0000000000000, 0x3ff0000000000000, LT },
{ 0x7ff0000000000000, 0x7ff0000000000000, EQ },
{ 0xfff0000000000000, 0x7ff0000000000000, LT },
{ 0x7ff8000000000000, 0x7ff0000000000000, UN },
{ 0xfff8000000000000, 0x7ff0000000000000, UN },
{ 0x0000000000000001, 0x0000000000000001, EQ },
{ 0x8000000000000001, 0x7ff0000000000000, LT },
{ 0xffffffffffffffff, 0x7ff0000000000000, UN },
{ 0xffffffffffffffff, 0xffffffffffffffff, UN },
};

int test20(long arg)
{
long i;
unsigned long cr;
struct cmpvals *vp = cmpvals;

for (i = 0; i < sizeof(cmpvals) / sizeof(cmpvals[0]); ++i, ++vp) {
asm("lfd 6,0(%1); lfd 10,8(%1); fcmpu 7,6,10; mfcr %0"
: "=r" (cr) : "b" (&vp->vala) : "memory");
cr &= 0xf;
if (cr != vp->result) {
print_hex(i, 2, " ");
print_hex(cr, 1, " ");
return i + 1;
}
}
return 0;
}

int fpu_test_20(void)
{
enable_fp();
return trapit(0, test20);
}

int fail = 0; int fail = 0;


void do_test(int num, int (*test)(void)) void do_test(int num, int (*test)(void))
@ -1191,6 +1287,8 @@ int main(void)
do_test(16, fpu_test_16); do_test(16, fpu_test_16);
do_test(17, fpu_test_17); do_test(17, fpu_test_17);
do_test(18, fpu_test_18); do_test(18, fpu_test_18);
do_test(19, fpu_test_19);
do_test(20, fpu_test_20);


return fail; return fail;
} }

Binary file not shown.

@ -16,3 +16,5 @@ test 15:PASS
test 16:PASS test 16:PASS
test 17:PASS test 17:PASS
test 18:PASS test 18:PASS
test 19:PASS
test 20:PASS

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