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/*
* Copyright(c) 2023 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/>.
*/
/*
* Test instructions where the semantics write to the destination
* before all the operand reads have been completed.
*
* These instructions are problematic when we short-circuit the
* register writes because the destination and source operands could
* be the same TCGv.
*
* We test by forcing the read and write to be register r7.
*/
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
int err;
#include "hex_test.h"
#define insert(RES, X, WIDTH, OFFSET) \
asm("r7 = %1\n\t" \
"r7 = insert(r7, #" #WIDTH ", #" #OFFSET ")\n\t" \
"%0 = r7\n\t" \
: "=r"(RES) : "r"(X) : "r7")
static void test_insert(void)
{
uint32_t res;
insert(res, 0x12345678, 8, 1);
check32(res, 0x123456f0);
insert(res, 0x12345678, 0, 1);
check32(res, 0x12345678);
insert(res, 0x12345678, 20, 16);
check32(res, 0x56785678);
}
static inline uint32_t insert_rp(uint32_t x, uint32_t width, uint32_t offset)
{
uint64_t width_offset = (uint64_t)width << 32 | offset;
uint32_t res;
asm("r7 = %1\n\t"
"r7 = insert(r7, %2)\n\t"
"%0 = r7\n\t"
: "=r"(res) : "r"(x), "r"(width_offset) : "r7");
return res;
}
static void test_insert_rp(void)
{
check32(insert_rp(0x12345678, 8, 1), 0x123456f0);
check32(insert_rp(0x12345678, 63, 8), 0x34567878);
check32(insert_rp(0x12345678, 127, 8), 0x34567878);
check32(insert_rp(0x12345678, 8, 24), 0x78345678);
check32(insert_rp(0x12345678, 8, 63), 0x12345678);
check32(insert_rp(0x12345678, 8, 64), 0x00000000);
}
static inline uint32_t asr_r_svw_trun(uint64_t x, uint32_t y)
{
uint32_t res;
asm("r7 = %2\n\t"
"r7 = vasrw(%1, r7)\n\t"
"%0 = r7\n\t"
: "=r"(res) : "r"(x), "r"(y) : "r7");
return res;
}
static void test_asr_r_svw_trun(void)
{
check32(asr_r_svw_trun(0x1111111122222222ULL, 5),
0x88881111);
check32(asr_r_svw_trun(0x1111111122222222ULL, 63),
0x00000000);
check32(asr_r_svw_trun(0x1111111122222222ULL, 64),
0x00000000);
check32(asr_r_svw_trun(0x1111111122222222ULL, 127),
0x22224444);
check32(asr_r_svw_trun(0x1111111122222222ULL, 128),
0x11112222);
check32(asr_r_svw_trun(0xffffffff22222222ULL, 128),
0xffff2222);
}
static inline uint32_t swiz(uint32_t x)
{
uint32_t res;
asm("r7 = %1\n\t"
"r7 = swiz(r7)\n\t"
"%0 = r7\n\t"
: "=r"(res) : "r"(x) : "r7");
return res;
}
static void test_swiz(void)
{
check32(swiz(0x11223344), 0x44332211);
}
int main()
{
test_insert();
test_insert_rp();
test_asr_r_svw_trun();
test_swiz();
puts(err ? "FAIL" : "PASS");
return err ? EXIT_FAILURE : EXIT_SUCCESS;
}
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