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gcc/libgcc/config/visium/memcpy.c
Jakub Jelinek 8d9254fc8a Update copyright years. 
From-SVN: r279813
2020-01-01 12:51:42 +01:00

863 lines
18 KiB
C
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/* Copyright (C) 2012-2020 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 3, or (at your option)
any later version.
GCC 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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
/* This file must be kept in sync with newlib/libc/machine/visium/memcpy.c */
#include <stddef.h>
#include "memcpy.h"
#define INST_BARRIER __asm__ __volatile__ ("":::"memory");
#define MOVE_32_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
m0 = in [4]; \
m1 = in [5]; \
m2 = in [6]; \
m3 = in [7]; \
out [4] = m0; \
out [5] = m1; \
out [6] = m2; \
out [7] = m3; \
INST_BARRIER \
m0 = in [8]; \
m1 = in [9]; \
m2 = in [10]; \
m3 = in [11]; \
out [8] = m0; \
out [9] = m1; \
out [10] = m2; \
out [11] = m3; \
INST_BARRIER \
m0 = in [12]; \
m1 = in [13]; \
m2 = in [14]; \
m3 = in [15]; \
out [12] = m0; \
out [13] = m1; \
out [14] = m2; \
out [15] = m3; \
INST_BARRIER \
m0 = in [16]; \
m1 = in [17]; \
m2 = in [18]; \
m3 = in [19]; \
out [16] = m0; \
out [17] = m1; \
out [18] = m2; \
out [19] = m3; \
INST_BARRIER \
m0 = in [20]; \
m1 = in [21]; \
m2 = in [22]; \
m3 = in [23]; \
out [20] = m0; \
out [21] = m1; \
out [22] = m2; \
out [23] = m3; \
INST_BARRIER \
m0 = in [24]; \
m1 = in [25]; \
m2 = in [26]; \
m3 = in [27]; \
out [24] = m0; \
out [25] = m1; \
out [26] = m2; \
out [27] = m3; \
INST_BARRIER \
m0 = in [28]; \
m1 = in [29]; \
m2 = in [30]; \
m3 = in [31]; \
out [28] = m0; \
out [29] = m1; \
out [30] = m2; \
out [31] = m3; \
INST_BARRIER \
in += 32; \
out += 32; \
} while(0)
#define MOVE_16_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
m0 = in [4]; \
m1 = in [5]; \
m2 = in [6]; \
m3 = in [7]; \
out [4] = m0; \
out [5] = m1; \
out [6] = m2; \
out [7] = m3; \
INST_BARRIER \
m0 = in [8]; \
m1 = in [9]; \
m2 = in [10]; \
m3 = in [11]; \
out [8] = m0; \
out [9] = m1; \
out [10] = m2; \
out [11] = m3; \
INST_BARRIER \
m0 = in [12]; \
m1 = in [13]; \
m2 = in [14]; \
m3 = in [15]; \
out [12] = m0; \
out [13] = m1; \
out [14] = m2; \
out [15] = m3; \
INST_BARRIER \
in += 16; \
out += 16; \
} while(0)
#define MOVE_12_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
m0 = in [4]; \
m1 = in [5]; \
m2 = in [6]; \
m3 = in [7]; \
out [4] = m0; \
out [5] = m1; \
out [6] = m2; \
out [7] = m3; \
INST_BARRIER \
m0 = in [8]; \
m1 = in [9]; \
m2 = in [10]; \
m3 = in [11]; \
out [8] = m0; \
out [9] = m1; \
out [10] = m2; \
out [11] = m3; \
INST_BARRIER \
in += 12; \
out += 12; \
} while(0)
#define MOVE_11_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
m0 = in [4]; \
m1 = in [5]; \
m2 = in [6]; \
m3 = in [7]; \
out [4] = m0; \
out [5] = m1; \
out [6] = m2; \
out [7] = m3; \
INST_BARRIER \
m0 = in [8]; \
m1 = in [9]; \
m2 = in [10]; \
out [8] = m0; \
out [9] = m1; \
out [10] = m2; \
INST_BARRIER \
in += 11; \
out += 11; \
} while(0)
#define MOVE_10_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
m0 = in [4]; \
m1 = in [5]; \
m2 = in [6]; \
m3 = in [7]; \
out [4] = m0; \
m0 = in [8]; \
out [5] = m1; \
m1 = in [9]; \
out [6] = m2; \
out [7] = m3; \
out [8] = m0; \
out [9] = m1; \
INST_BARRIER \
in += 10; \
out += 10; \
} while(0)
#define MOVE_9_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
m0 = in [4]; \
m1 = in [5]; \
m2 = in [6]; \
m3 = in [7]; \
out [4] = m0; \
out [5] = m1; \
out [6] = m2; \
out [7] = m3; \
INST_BARRIER \
m0 = in [8]; \
out [8] = m0; \
in += 9; \
out += 9; \
} while(0)
#define MOVE_8_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
m0 = in [4]; \
m1 = in [5]; \
m2 = in [6]; \
m3 = in [7]; \
out [4] = m0; \
out [5] = m1; \
out [6] = m2; \
out [7] = m3; \
INST_BARRIER \
in += 8; \
out += 8; \
} while(0)
#define MOVE_7_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
m0 = in [4]; \
m1 = in [5]; \
m2 = in [6]; \
out [4] = m0; \
out [5] = m1; \
out [6] = m2; \
INST_BARRIER \
in += 7; \
out += 7; \
} while(0)
#define MOVE_6_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
INST_BARRIER \
m0 = in [4]; \
out [1] = m1; \
INST_BARRIER \
m1 = in [5]; \
out [2] = m2; \
out [3] = m3; \
out [4] = m0; \
out [5] = m1; \
INST_BARRIER \
in += 6; \
out += 6; \
} while(0)
#define MOVE_5_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
INST_BARRIER \
out [0] = m0; \
m0 = in [4]; \
INST_BARRIER \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
out [4] = m0; \
INST_BARRIER \
in += 5; \
out += 5; \
} while(0)
#define MOVE_4_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
m3 = in [3]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
out [3] = m3; \
INST_BARRIER \
in += 4; \
out += 4; \
} while(0)
#define MOVE_3_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
m2 = in [2]; \
out [0] = m0; \
out [1] = m1; \
out [2] = m2; \
INST_BARRIER \
in += 3; \
out += 3; \
} while(0)
#define MOVE_2_OBJECTS(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
m1 = in [1]; \
out [0] = m0; \
out [1] = m1; \
INST_BARRIER \
in += 2; \
out += 2; \
} while(0)
#define MOVE_1_OBJECT(in,out) \
do { \
INST_BARRIER \
m0 = in [0]; \
out [0] = m0; \
INST_BARRIER \
in += 1; \
out += 1; \
} while(0)
static inline void
__int_memcpy (void *__restrict s1, const void *__restrict s2, size_t n)
{
int value = n;
int loop_var;
const int *in = s2;
int *out = s1;
int count;
int m0,m1,m2,m3;
/* This code currently give a stall for any value with a 1->2 in the low 5
bits, i.e. 1,2, 33,34 ? not acceptable! */
switch (value & 0x1f)
{
case 0:
break;
case 1:
MOVE_1_OBJECT (in, out);
break;
case 2:
MOVE_2_OBJECTS (in, out);
break;
case 3:
MOVE_3_OBJECTS (in, out);
break;
case 4:
MOVE_4_OBJECTS (in, out);
break;
case 5:
MOVE_5_OBJECTS (in, out);
break;
case 6:
MOVE_6_OBJECTS (in, out);
break;
case 7:
MOVE_7_OBJECTS (in, out);
break;
case 8:
MOVE_8_OBJECTS (in, out);
break;
case 9:
MOVE_9_OBJECTS (in, out);
break;
case 10:
MOVE_10_OBJECTS (in, out);
break;
case 11:
MOVE_11_OBJECTS (in, out);
break;
case 12:
MOVE_12_OBJECTS (in, out);
break;
case 13:
MOVE_9_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 14:
MOVE_12_OBJECTS (in, out);
MOVE_2_OBJECTS (in, out);
break;
case 15:
MOVE_11_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 16:
MOVE_16_OBJECTS (in, out);
break;
case 17:
MOVE_11_OBJECTS (in, out);
MOVE_6_OBJECTS (in, out);
break;
case 18:
MOVE_9_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
break;
case 19:
MOVE_16_OBJECTS (in, out);
MOVE_3_OBJECTS (in, out);
break;
case 20:
MOVE_16_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 21:
MOVE_16_OBJECTS (in, out);
MOVE_5_OBJECTS (in, out);
break;
case 22:
MOVE_16_OBJECTS (in, out);
MOVE_6_OBJECTS (in, out);
break;
case 23:
MOVE_16_OBJECTS (in, out);
MOVE_7_OBJECTS (in, out);
break;
case 24:
MOVE_16_OBJECTS (in, out);
MOVE_8_OBJECTS (in, out);
break;
case 25:
MOVE_16_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
break;
case 26:
MOVE_16_OBJECTS (in, out);
MOVE_10_OBJECTS (in, out);
break;
case 27:
MOVE_16_OBJECTS (in, out);
MOVE_11_OBJECTS (in, out);
break;
case 28:
MOVE_16_OBJECTS (in, out);
MOVE_8_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 29:
MOVE_16_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 30:
MOVE_16_OBJECTS (in, out);
MOVE_12_OBJECTS (in, out);
MOVE_2_OBJECTS (in, out);
break;
case 31:
MOVE_16_OBJECTS (in, out);
MOVE_11_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
}
/* This loop governs the asmptoptic behaviour of this algorithm, for long
word copies. */
count = value >> 5;
for (loop_var = 0; loop_var < count; loop_var++)
MOVE_32_OBJECTS (in, out);
}
static inline void
__shrt_int_memcpy (void *__restrict s1, const void *__restrict s2, size_t n)
{
int value = n;
int loop_var;
const short int *in = s2;
int short *out = s1;
int count;
int m0,m1,m2,m3;
/* This code currently give a stall for any value with a 1->2 in the low 5
bits, i.e. 1,2, 33,34 ? not acceptable! */
switch (value & 0x1f)
{
case 0:
break;
case 1:
MOVE_1_OBJECT (in, out);
break;
case 2:
MOVE_2_OBJECTS (in, out);
break;
case 3:
MOVE_3_OBJECTS (in, out);
break;
case 4:
MOVE_4_OBJECTS (in, out);
break;
case 5:
MOVE_5_OBJECTS (in, out);
break;
case 6:
MOVE_6_OBJECTS (in, out);
break;
case 7:
MOVE_7_OBJECTS (in, out);
break;
case 8:
MOVE_8_OBJECTS (in, out);
break;
case 9:
MOVE_9_OBJECTS (in, out);
break;
case 10:
MOVE_10_OBJECTS (in, out);
break;
case 11:
MOVE_11_OBJECTS (in, out);
break;
case 12:
MOVE_12_OBJECTS (in, out);
break;
case 13:
MOVE_9_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 14:
MOVE_12_OBJECTS (in, out);
MOVE_2_OBJECTS (in, out);
break;
case 15:
MOVE_11_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 16:
MOVE_16_OBJECTS (in, out);
break;
case 17:
MOVE_11_OBJECTS (in, out);
MOVE_6_OBJECTS (in, out);
break;
case 18:
MOVE_9_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
break;
case 19:
MOVE_16_OBJECTS (in, out);
MOVE_3_OBJECTS (in, out);
break;
case 20:
MOVE_16_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 21:
MOVE_16_OBJECTS (in, out);
MOVE_5_OBJECTS (in, out);
break;
case 22:
MOVE_16_OBJECTS (in, out);
MOVE_6_OBJECTS (in, out);
break;
case 23:
MOVE_16_OBJECTS (in, out);
MOVE_7_OBJECTS (in, out);
break;
case 24:
MOVE_16_OBJECTS (in, out);
MOVE_8_OBJECTS (in, out);
break;
case 25:
MOVE_16_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
break;
case 26:
MOVE_16_OBJECTS (in, out);
MOVE_10_OBJECTS (in, out);
break;
case 27:
MOVE_16_OBJECTS (in, out);
MOVE_11_OBJECTS (in, out);
break;
case 28:
MOVE_16_OBJECTS (in, out);
MOVE_8_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 29:
MOVE_16_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 30:
MOVE_16_OBJECTS (in, out);
MOVE_12_OBJECTS (in, out);
MOVE_2_OBJECTS (in, out);
break;
case 31:
MOVE_16_OBJECTS (in, out);
MOVE_11_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
}
/* This loop governs the asmptoptic behaviour of this algorithm, for long
word copies. */
count = value >> 5;
for (loop_var = 0; loop_var < count; loop_var++)
MOVE_32_OBJECTS (in, out);
}
static inline void
__byte_memcpy (void *__restrict s1, const void *__restrict s2, size_t n)
{
int value = n;
int loop_var;
const char *in = s2;
char *out = s1;
int count;
int m0,m1,m2,m3;
/* This code currently give a stall for any value with a 1->2 in the low 5
bits, i.e. 1,2, 33,34 ? not acceptable! */
switch (value & 0x1f)
{
case 0:
break;
case 1:
MOVE_1_OBJECT (in, out);
break;
case 2:
MOVE_2_OBJECTS (in, out);
break;
case 3:
MOVE_3_OBJECTS (in, out);
break;
case 4:
MOVE_4_OBJECTS (in, out);
break;
case 5:
MOVE_5_OBJECTS (in, out);
break;
case 6:
MOVE_6_OBJECTS (in, out);
break;
case 7:
MOVE_7_OBJECTS (in, out);
break;
case 8:
MOVE_8_OBJECTS (in, out);
break;
case 9:
MOVE_9_OBJECTS (in, out);
break;
case 10:
MOVE_10_OBJECTS (in, out);
break;
case 11:
MOVE_11_OBJECTS (in, out);
break;
case 12:
MOVE_12_OBJECTS (in, out);
break;
case 13:
MOVE_9_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 14:
MOVE_12_OBJECTS (in, out);
MOVE_2_OBJECTS (in, out);
break;
case 15:
MOVE_11_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 16:
MOVE_16_OBJECTS (in, out);
break;
case 17:
MOVE_11_OBJECTS (in, out);
MOVE_6_OBJECTS (in, out);
break;
case 18:
MOVE_9_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
break;
case 19:
MOVE_16_OBJECTS (in, out);
MOVE_3_OBJECTS (in, out);
break;
case 20:
MOVE_16_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 21:
MOVE_16_OBJECTS (in, out);
MOVE_5_OBJECTS (in, out);
break;
case 22:
MOVE_16_OBJECTS (in, out);
MOVE_6_OBJECTS (in, out);
break;
case 23:
MOVE_16_OBJECTS (in, out);
MOVE_7_OBJECTS (in, out);
break;
case 24:
MOVE_16_OBJECTS (in, out);
MOVE_8_OBJECTS (in, out);
break;
case 25:
MOVE_16_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
break;
case 26:
MOVE_16_OBJECTS (in, out);
MOVE_10_OBJECTS (in, out);
break;
case 27:
MOVE_16_OBJECTS (in, out);
MOVE_11_OBJECTS (in, out);
break;
case 28:
MOVE_16_OBJECTS (in, out);
MOVE_8_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 29:
MOVE_16_OBJECTS (in, out);
MOVE_9_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
case 30:
MOVE_16_OBJECTS (in, out);
MOVE_12_OBJECTS (in, out);
MOVE_2_OBJECTS (in, out);
break;
case 31:
MOVE_16_OBJECTS (in, out);
MOVE_11_OBJECTS (in, out);
MOVE_4_OBJECTS (in, out);
break;
}
/* This loop governs the asmptoptic behaviour of this algorithm, for long
word copies. */
count = value >> 5;
for (loop_var = 0; loop_var < count; loop_var++)
MOVE_32_OBJECTS (in, out);
}
/* Exposed interface. */
#ifndef __VISIUM_ARCH_BMI__
void
__long_int_memcpy (void *__restrict s1, const void *__restrict s2, size_t n)
{
__int_memcpy (s1, s2, n);
}
#endif /* !__VISIUM_ARCH_BMI__ */
void
__wrd_memcpy (void *__restrict s1, const void *__restrict s2, size_t n)
{
__shrt_int_memcpy (s1, s2, n);
}
void
__byt_memcpy (void *__restrict s1, const void *__restrict s2, size_t n)
{
__byte_memcpy (s1, s2, n);
}
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