mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-25 12:40:08 +00:00
449a8ac250
Implement it similar to VECTOR COUNT LEADING ZEROS. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
77 lines
4.0 KiB
C
77 lines
4.0 KiB
C
/*
|
|
* QEMU TCG support -- s390x vector integer instruction support
|
|
*
|
|
* Copyright (C) 2019 Red Hat Inc
|
|
*
|
|
* Authors:
|
|
* David Hildenbrand <david@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "cpu.h"
|
|
#include "vec.h"
|
|
#include "exec/helper-proto.h"
|
|
|
|
#define DEF_VAVG(BITS) \
|
|
void HELPER(gvec_vavg##BITS)(void *v1, const void *v2, const void *v3, \
|
|
uint32_t desc) \
|
|
{ \
|
|
int i; \
|
|
\
|
|
for (i = 0; i < (128 / BITS); i++) { \
|
|
const int32_t a = (int##BITS##_t)s390_vec_read_element##BITS(v2, i); \
|
|
const int32_t b = (int##BITS##_t)s390_vec_read_element##BITS(v3, i); \
|
|
\
|
|
s390_vec_write_element##BITS(v1, i, (a + b + 1) >> 1); \
|
|
} \
|
|
}
|
|
DEF_VAVG(8)
|
|
DEF_VAVG(16)
|
|
|
|
#define DEF_VAVGL(BITS) \
|
|
void HELPER(gvec_vavgl##BITS)(void *v1, const void *v2, const void *v3, \
|
|
uint32_t desc) \
|
|
{ \
|
|
int i; \
|
|
\
|
|
for (i = 0; i < (128 / BITS); i++) { \
|
|
const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \
|
|
const uint##BITS##_t b = s390_vec_read_element##BITS(v3, i); \
|
|
\
|
|
s390_vec_write_element##BITS(v1, i, (a + b + 1) >> 1); \
|
|
} \
|
|
}
|
|
DEF_VAVGL(8)
|
|
DEF_VAVGL(16)
|
|
|
|
#define DEF_VCLZ(BITS) \
|
|
void HELPER(gvec_vclz##BITS)(void *v1, const void *v2, uint32_t desc) \
|
|
{ \
|
|
int i; \
|
|
\
|
|
for (i = 0; i < (128 / BITS); i++) { \
|
|
const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \
|
|
\
|
|
s390_vec_write_element##BITS(v1, i, clz32(a) - 32 + BITS); \
|
|
} \
|
|
}
|
|
DEF_VCLZ(8)
|
|
DEF_VCLZ(16)
|
|
|
|
#define DEF_VCTZ(BITS) \
|
|
void HELPER(gvec_vctz##BITS)(void *v1, const void *v2, uint32_t desc) \
|
|
{ \
|
|
int i; \
|
|
\
|
|
for (i = 0; i < (128 / BITS); i++) { \
|
|
const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \
|
|
\
|
|
s390_vec_write_element##BITS(v1, i, a ? ctz32(a) : BITS); \
|
|
} \
|
|
}
|
|
DEF_VCTZ(8)
|
|
DEF_VCTZ(16)
|