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/*
libdemac - A Monkey's Audio decoder
$Id: vector_math32_armv4.h 19144 2008-11-19 21:31:33Z amiconn $
Copyright (C) Dave Chapman 2007
ARMv4 vector math copyright (C) 2008 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
*/
static inline void vector_add(int32_t* v1, int32_t* v2)
{
#if ORDER > 32
int cnt = ORDER>>5;
#endif
#if ORDER > 16
#define ADD_SUB_BLOCKS "8"
#else
#define ADD_SUB_BLOCKS "4"
#endif
asm volatile (
"1: \n"
".rept " ADD_SUB_BLOCKS "\n"
"ldmia %[v1], {r0-r3} \n"
"ldmia %[v2]!, {r4-r7} \n"
"add r0, r0, r4 \n"
"add r1, r1, r5 \n"
"add r2, r2, r6 \n"
"add r3, r3, r7 \n"
"stmia %[v1]!, {r0-r3} \n"
".endr \n"
#if ORDER > 32
"subs %[cnt], %[cnt], #1 \n"
"bne 1b \n"
#endif
: /* outputs */
#if ORDER > 32
[cnt]"+r"(cnt),
#endif
[v1] "+r"(v1),
[v2] "+r"(v2)
: /* inputs */
: /* clobbers */
"r0", "r1", "r2", "r3", "r4",
"r5", "r6", "r7", "memory"
);
}
static inline void vector_sub(int32_t* v1, int32_t* v2)
{
#if ORDER > 32
int cnt = ORDER>>5;
#endif
asm volatile (
"1: \n"
".rept " ADD_SUB_BLOCKS "\n"
"ldmia %[v1], {r0-r3} \n"
"ldmia %[v2]!, {r4-r7} \n"
"sub r0, r0, r4 \n"
"sub r1, r1, r5 \n"
"sub r2, r2, r6 \n"
"sub r3, r3, r7 \n"
"stmia %[v1]!, {r0-r3} \n"
".endr \n"
#if ORDER > 32
"subs %[cnt], %[cnt], #1 \n"
"bne 1b \n"
#endif
: /* outputs */
#if ORDER > 32
[cnt]"+r"(cnt),
#endif
[v1] "+r"(v1),
[v2] "+r"(v2)
: /* inputs */
: /* clobbers */
"r0", "r1", "r2", "r3", "r4",
"r5", "r6", "r7", "memory"
);
}
static inline int32_t scalarproduct(int32_t* v1, int32_t* v2)
{
int res;
#if ORDER > 32
int cnt = ORDER>>5;
#endif
asm volatile (
#if ORDER > 16
#if ORDER > 32
"mov %[res], #0 \n"
#endif
"ldmia %[v2]!, {r6-r7} \n"
"1: \n"
"ldmia %[v1]!, {r0,r1,r3-r5} \n"
#if ORDER > 32
"mla %[res], r6, r0, %[res] \n"
#else
"mul %[res], r6, r0 \n"
#endif
"mla %[res], r7, r1, %[res] \n"
"ldmia %[v2]!, {r0-r2,r6-r8} \n"
"mla %[res], r0, r3, %[res] \n"
"mla %[res], r1, r4, %[res] \n"
"mla %[res], r2, r5, %[res] \n"
"ldmia %[v1]!, {r0-r4} \n"
"mla %[res], r6, r0, %[res] \n"
"mla %[res], r7, r1, %[res] \n"
"mla %[res], r8, r2, %[res] \n"
"ldmia %[v2]!, {r0,r1,r6-r8} \n"
"mla %[res], r0, r3, %[res] \n"
"mla %[res], r1, r4, %[res] \n"
"ldmia %[v1]!, {r0-r5} \n"
"mla %[res], r6, r0, %[res] \n"
"mla %[res], r7, r1, %[res] \n"
"mla %[res], r8, r2, %[res] \n"
"ldmia %[v2]!, {r0-r2,r6,r7} \n"
"mla %[res], r0, r3, %[res] \n"
"mla %[res], r1, r4, %[res] \n"
"mla %[res], r2, r5, %[res] \n"
"ldmia %[v1]!, {r0,r1,r3-r5} \n"
"mla %[res], r6, r0, %[res] \n"
"mla %[res], r7, r1, %[res] \n"
"ldmia %[v2]!, {r0-r2,r6-r8} \n"
"mla %[res], r0, r3, %[res] \n"
"mla %[res], r1, r4, %[res] \n"
"mla %[res], r2, r5, %[res] \n"
"ldmia %[v1]!, {r0-r4} \n"
"mla %[res], r6, r0, %[res] \n"
"mla %[res], r7, r1, %[res] \n"
"mla %[res], r8, r2, %[res] \n"
"ldmia %[v2]!, {r0,r1,r6-r8} \n"
"mla %[res], r0, r3, %[res] \n"
"mla %[res], r1, r4, %[res] \n"
"ldmia %[v1]!, {r0-r5} \n"
"mla %[res], r6, r0, %[res] \n"
"mla %[res], r7, r1, %[res] \n"
"mla %[res], r8, r2, %[res] \n"
#if ORDER > 32
"ldmia %[v2]!, {r0-r2,r6,r7} \n"
#else
"ldmia %[v2]!, {r0-r2} \n"
#endif
"mla %[res], r0, r3, %[res] \n"
"mla %[res], r1, r4, %[res] \n"
"mla %[res], r2, r5, %[res] \n"
#if ORDER > 32
"subs %[cnt], %[cnt], #1 \n"
"bne 1b \n"
#endif
#else /* ORDER <= 16 */
"ldmia %[v1]!, {r0-r3} \n"
"ldmia %[v2]!, {r4-r7} \n"
"mul %[res], r4, r0 \n"
"mla %[res], r5, r1, %[res] \n"
"mla %[res], r6, r2, %[res] \n"
"mla %[res], r7, r3, %[res] \n"
".rept 3 \n"
"ldmia %[v1]!, {r0-r3} \n"
"ldmia %[v2]!, {r4-r7} \n"
"mla %[res], r4, r0, %[res] \n"
"mla %[res], r5, r1, %[res] \n"
"mla %[res], r6, r2, %[res] \n"
"mla %[res], r7, r3, %[res] \n"
".endr \n"
#endif /* ORDER <= 16 */
: /* outputs */
#if ORDER > 32
[cnt]"+r"(cnt),
#endif
[v1] "+r"(v1),
[v2] "+r"(v2),
[res]"=r"(res)
: /* inputs */
: /* clobbers */
"r0", "r1", "r2", "r3",
"r4", "r5", "r6", "r7"
#if ORDER > 16
,"r8"
#endif
);
return res;
}
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