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/*
libdemac - A Monkey's Audio decoder
$Id$
Copyright (C) Dave Chapman 2007
MMX vector math copyright (C) 2010 Jens Arnold
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, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
*/
#define FUSED_VECTOR_MATH
#define REPEAT_MB3(x, n) x(n) x(n+8) x(n+16)
#define REPEAT_MB7(x, n) x(n) x(n+8) x(n+16) x(n+24) x(n+32) x(n+40) x(n+48)
#define REPEAT_MB8(x, n) REPEAT_MB7(x, n) x(n+56)
#if ORDER == 16 /* 3 times */
#define REPEAT_MB(x) REPEAT_MB3(x, 8)
#elif ORDER == 32 /* 7 times */
#define REPEAT_MB(x) REPEAT_MB7(x, 8)
#elif ORDER == 64 /* 5*3 == 15 times */
#define REPEAT_MB(x) REPEAT_MB3(x, 8) REPEAT_MB3(x, 32) REPEAT_MB3(x, 56) \
REPEAT_MB3(x, 80) REPEAT_MB3(x, 104)
#elif ORDER == 256 /* 9*7 == 63 times */
#define REPEAT_MB(x) REPEAT_MB7(x, 8) REPEAT_MB7(x, 64) REPEAT_MB7(x, 120) \
REPEAT_MB7(x, 176) REPEAT_MB7(x, 232) REPEAT_MB7(x, 288) \
REPEAT_MB7(x, 344) REPEAT_MB7(x, 400) REPEAT_MB7(x, 456)
#elif ORDER == 1280 /* 8*8 == 64 times */
#define REPEAT_MB(x) REPEAT_MB8(x, 0) REPEAT_MB8(x, 64) REPEAT_MB8(x, 128) \
REPEAT_MB8(x, 192) REPEAT_MB8(x, 256) REPEAT_MB8(x, 320) \
REPEAT_MB8(x, 384) REPEAT_MB8(x, 448)
#else
#error unsupported order
#endif
static inline int32_t vector_sp_add(int16_t* v1, int16_t* f2, int16_t *s2)
{
int res, t;
#if ORDER > 256
int cnt = ORDER>>8;
#endif
asm volatile (
#if ORDER > 256
"pxor %%mm2, %%mm2 \n"
"1: \n"
#else
"movq (%[v1]), %%mm2 \n"
"movq %%mm2, %%mm0 \n"
"pmaddwd (%[f2]), %%mm2 \n"
"paddw (%[s2]), %%mm0 \n"
"movq %%mm0, (%[v1]) \n"
#endif
#define SP_ADD_BLOCK(n) \
"movq " #n "(%[v1]), %%mm1 \n" \
"movq %%mm1, %%mm0 \n" \
"pmaddwd " #n "(%[f2]), %%mm1 \n" \
"paddw " #n "(%[s2]), %%mm0 \n" \
"movq %%mm0, " #n "(%[v1]) \n" \
"paddd %%mm1, %%mm2 \n"
REPEAT_MB(SP_ADD_BLOCK)
#if ORDER > 256
"add $512, %[v1] \n"
"add $512, %[s2] \n"
"add $512, %[f2] \n"
"dec %[cnt] \n"
"jne 1b \n"
#endif
"movd %%mm2, %[t] \n"
"psrlq $32, %%mm2 \n"
"movd %%mm2, %[res] \n"
"add %[t], %[res] \n"
: /* outputs */
#if ORDER > 256
[cnt]"+r"(cnt),
[s2] "+r"(s2),
[res]"=r"(res),
[t] "=r"(t)
: /* inputs */
[v1]"2"(v1),
[f2]"3"(f2)
#else
[res]"=r"(res),
[t] "=r"(t)
: /* inputs */
[v1]"r"(v1),
[f2]"r"(f2),
[s2]"r"(s2)
#endif
: /* clobbers */
"mm0", "mm1", "mm2"
);
return res;
}
static inline int32_t vector_sp_sub(int16_t* v1, int16_t* f2, int16_t *s2)
{
int res, t;
#if ORDER > 256
int cnt = ORDER>>8;
#endif
asm volatile (
#if ORDER > 256
"pxor %%mm2, %%mm2 \n"
"1: \n"
#else
"movq (%[v1]), %%mm2 \n"
"movq %%mm2, %%mm0 \n"
"pmaddwd (%[f2]), %%mm2 \n"
"psubw (%[s2]), %%mm0 \n"
"movq %%mm0, (%[v1]) \n"
#endif
#define SP_SUB_BLOCK(n) \
"movq " #n "(%[v1]), %%mm1 \n" \
"movq %%mm1, %%mm0 \n" \
"pmaddwd " #n "(%[f2]), %%mm1 \n" \
"psubw " #n "(%[s2]), %%mm0 \n" \
"movq %%mm0, " #n "(%[v1]) \n" \
"paddd %%mm1, %%mm2 \n"
REPEAT_MB(SP_SUB_BLOCK)
#if ORDER > 256
"add $512, %[v1] \n"
"add $512, %[s2] \n"
"add $512, %[f2] \n"
"dec %[cnt] \n"
"jne 1b \n"
#endif
"movd %%mm2, %[t] \n"
"psrlq $32, %%mm2 \n"
"movd %%mm2, %[res] \n"
"add %[t], %[res] \n"
: /* outputs */
#if ORDER > 256
[cnt]"+r"(cnt),
[s2] "+r"(s2),
[res]"=r"(res),
[t] "=r"(t)
: /* inputs */
[v1]"2"(v1),
[f2]"3"(f2)
#else
[res]"=r"(res),
[t] "=r"(t)
: /* inputs */
[v1]"r"(v1),
[f2]"r"(f2),
[s2]"r"(s2)
#endif
: /* clobbers */
"mm0", "mm1", "mm2"
);
return res;
}
static inline int32_t scalarproduct(int16_t* v1, int16_t* v2)
{
int res, t;
#if ORDER > 256
int cnt = ORDER>>8;
#endif
asm volatile (
#if ORDER > 256
"pxor %%mm1, %%mm1 \n"
"1: \n"
#else
"movq (%[v1]), %%mm1 \n"
"pmaddwd (%[v2]), %%mm1 \n"
#endif
#define SP_BLOCK(n) \
"movq " #n "(%[v1]), %%mm0 \n" \
"pmaddwd " #n "(%[v2]), %%mm0 \n" \
"paddd %%mm0, %%mm1 \n"
REPEAT_MB(SP_BLOCK)
#if ORDER > 256
"add $512, %[v1] \n"
"add $512, %[v2] \n"
"dec %[cnt] \n"
"jne 1b \n"
#endif
"movd %%mm1, %[t] \n"
"psrlq $32, %%mm1 \n"
"movd %%mm1, %[res] \n"
"add %[t], %[res] \n"
: /* outputs */
#if ORDER > 256
[cnt]"+r"(cnt),
[res]"=r"(res),
[t] "=r"(t)
: /* inputs */
[v1]"1"(v1),
[v2]"2"(v2)
#else
[res]"=r"(res),
[t] "=r"(t)
: /* inputs */
[v1]"r"(v1),
[v2]"r"(v2)
#endif
: /* clobbers */
"mm0", "mm1"
);
return res;
}
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