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/*
* Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
static int sfrecipa(int Rs, int Rt, int *pred_result)
{
int result;
int predval;
asm volatile("%0,p0 = sfrecipa(%2, %3)\n\t"
"%1 = p0\n\t"
: "+r"(result), "=r"(predval)
: "r"(Rs), "r"(Rt)
: "p0");
*pred_result = predval;
return result;
}
static int sfinvsqrta(int Rs, int *pred_result)
{
int result;
int predval;
asm volatile("%0,p0 = sfinvsqrta(%2)\n\t"
"%1 = p0\n\t"
: "+r"(result), "=r"(predval)
: "r"(Rs)
: "p0");
*pred_result = predval;
return result;
}
static long long vacsh(long long Rxx, long long Rss, long long Rtt,
int *pred_result, int *ovf_result)
{
long long result = Rxx;
int predval;
int usr;
/*
* This instruction can set bit 0 (OVF/overflow) in usr
* Clear the bit first, then return that bit to the caller
*/
asm volatile("r2 = usr\n\t"
"r2 = clrbit(r2, #0)\n\t" /* clear overflow bit */
"usr = r2\n\t"
"%0,p0 = vacsh(%3, %4)\n\t"
"%1 = p0\n\t"
"%2 = usr\n\t"
: "+r"(result), "=r"(predval), "=r"(usr)
: "r"(Rss), "r"(Rtt)
: "r2", "p0", "usr");
*pred_result = predval;
*ovf_result = (usr & 1);
return result;
}
static long long vminub(long long Rtt, long long Rss,
int *pred_result)
{
long long result;
int predval;
asm volatile("%0,p0 = vminub(%2, %3)\n\t"
"%1 = p0\n\t"
: "=r"(result), "=r"(predval)
: "r"(Rtt), "r"(Rss)
: "p0");
*pred_result = predval;
return result;
}
static long long add_carry(long long Rss, long long Rtt,
int pred_in, int *pred_result)
{
long long result;
int predval = pred_in;
asm volatile("p0 = %1\n\t"
"%0 = add(%2, %3, p0):carry\n\t"
"%1 = p0\n\t"
: "=r"(result), "+r"(predval)
: "r"(Rss), "r"(Rtt)
: "p0");
*pred_result = predval;
return result;
}
static long long sub_carry(long long Rss, long long Rtt,
int pred_in, int *pred_result)
{
long long result;
int predval = pred_in;
asm volatile("p0 = !cmp.eq(%1, #0)\n\t"
"%0 = sub(%2, %3, p0):carry\n\t"
"%1 = p0\n\t"
: "=r"(result), "+r"(predval)
: "r"(Rss), "r"(Rtt)
: "p0");
*pred_result = predval;
return result;
}
int err;
static void check_ll(long long val, long long expect)
{
if (val != expect) {
printf("ERROR: 0x%016llx != 0x%016llx\n", val, expect);
err++;
}
}
static void check(int val, int expect)
{
if (val != expect) {
printf("ERROR: 0x%08x != 0x%08x\n", val, expect);
err++;
}
}
static void check_p(int val, int expect)
{
if (val != expect) {
printf("ERROR: 0x%02x != 0x%02x\n", val, expect);
err++;
}
}
static void test_sfrecipa()
{
int res;
int pred_result;
res = sfrecipa(0x04030201, 0x05060708, &pred_result);
check(res, 0x59f38001);
check_p(pred_result, 0x00);
}
static void test_sfinvsqrta()
{
int res;
int pred_result;
res = sfinvsqrta(0x04030201, &pred_result);
check(res, 0x4d330000);
check_p(pred_result, 0xe0);
res = sfinvsqrta(0x0, &pred_result);
check(res, 0x3f800000);
check_p(pred_result, 0x0);
}
static void test_vacsh()
{
long long res64;
int pred_result;
int ovf_result;
res64 = vacsh(0x0004000300020001LL,
0x0001000200030004LL,
0x0000000000000000LL, &pred_result, &ovf_result);
check_ll(res64, 0x0004000300030004LL);
check_p(pred_result, 0xf0);
check(ovf_result, 0);
res64 = vacsh(0x0004000300020001LL,
0x0001000200030004LL,
0x000affff000d0000LL, &pred_result, &ovf_result);
check_ll(res64, 0x000e0003000f0004LL);
check_p(pred_result, 0xcc);
check(ovf_result, 0);
res64 = vacsh(0x00047fff00020001LL,
0x00017fff00030004LL,
0x000a0fff000d0000LL, &pred_result, &ovf_result);
check_ll(res64, 0x000e7fff000f0004LL);
check_p(pred_result, 0xfc);
check(ovf_result, 1);
res64 = vacsh(0x0004000300020001LL,
0x0001000200030009LL,
0x000affff000d0001LL, &pred_result, &ovf_result);
check_ll(res64, 0x000e0003000f0008LL);
check_p(pred_result, 0xcc);
check(ovf_result, 0);
}
static void test_vminub()
{
long long res64;
int pred_result;
res64 = vminub(0x0807060504030201LL,
0x0102030405060708LL,
&pred_result);
check_ll(res64, 0x0102030404030201LL);
check_p(pred_result, 0xf0);
res64 = vminub(0x0802060405030701LL,
0x0107030504060208LL,
&pred_result);
check_ll(res64, 0x0102030404030201LL);
check_p(pred_result, 0xaa);
}
static void test_add_carry()
{
long long res64;
int pred_result;
res64 = add_carry(0x0000000000000000LL,
0xffffffffffffffffLL,
1, &pred_result);
check_ll(res64, 0x0000000000000000LL);
check_p(pred_result, 0xff);
res64 = add_carry(0x0000000100000000LL,
0xffffffffffffffffLL,
0, &pred_result);
check_ll(res64, 0x00000000ffffffffLL);
check_p(pred_result, 0xff);
res64 = add_carry(0x0000000100000000LL,
0xffffffffffffffffLL,
0, &pred_result);
check_ll(res64, 0x00000000ffffffffLL);
check_p(pred_result, 0xff);
}
static void test_sub_carry()
{
long long res64;
int pred_result;
res64 = sub_carry(0x0000000000000000LL,
0x0000000000000000LL,
1, &pred_result);
check_ll(res64, 0x0000000000000000LL);
check_p(pred_result, 0xff);
res64 = sub_carry(0x0000000100000000LL,
0x0000000000000000LL,
0, &pred_result);
check_ll(res64, 0x00000000ffffffffLL);
check_p(pred_result, 0xff);
res64 = sub_carry(0x0000000100000000LL,
0x0000000000000000LL,
0, &pred_result);
check_ll(res64, 0x00000000ffffffffLL);
check_p(pred_result, 0xff);
}
int main()
{
test_sfrecipa();
test_sfinvsqrta();
test_vacsh();
test_vminub();
test_add_carry();
test_sub_carry();
puts(err ? "FAIL" : "PASS");
return err;
}
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