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altivec gcc-3 fixes by (Magnus Damm <damm at opensource dot se>) 

Originally committed as revision 1896 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-05-21 17:50:57 +00:00
parent d9974a4867
commit a9a07762b8
7 changed files with 140 additions and 27 deletions
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31
configure vendored
View File

@ -343,8 +343,29 @@ if test $altivec = "default"; then
fi
fi
# See if we have <altivec.h>
cat > $TMPC << EOF
#include <altivec.h>
int main( void ) { return 0; }
EOF
_altivec_h="no"
if $cc -o $TMPE $TMPC 2> /dev/null ; then
_altivec_h="yes"
fi
# See does our compiler support Motorola AltiVec C API
if test $altivec = "yes"; then
if test $_altivec_h = "yes"; then
cat > $TMPC << EOF
#include <altivec.h>
int main(void) {
vector signed int v1, v2, v3;
v1 = vec_add(v2,v3);
return 0;
}
EOF
else
cat > $TMPC << EOF
int main(void) {
vector signed int v1, v2, v3;
@ -352,7 +373,12 @@ int main(void) {
return 0;
}
EOF
fi
if test "$darwin" = "yes"; then
$cc -o $TMPE $TMPC -faltivec 2> /dev/null || altivec="no"
else
$cc -o $TMPE $TMPC -maltivec -mabi=altivec 2> /dev/null || altivec="no"
fi
fi
# Can only do mmi on mips
@ -742,6 +768,11 @@ if test "$altivec" = "yes" ; then
echo "#define HAVE_ALTIVEC 1" >> $TMPH
echo "// Enable the next line to use the reference C code instead of AltiVec" >> $TMPH
echo "// #define ALTIVEC_USE_REFERENCE_C_CODE 1" >> $TMPH
if test "$_altivec_h" = "yes" ; then
echo "#define HAVE_ALTIVEC_H 1" >> $TMPH
else
echo "#undef HAVE_ALTIVEC_H 1" >> $TMPH
fi
fi
if test "$gprof" = "yes" ; then
echo "TARGET_GPROF=yes" >> config.mak

18
libavcodec/ppc/dsputil_altivec.c
View File

@ -19,6 +19,9 @@
*/
#include "../dsputil.h"
#include "gcc_fixes.h"
#include "dsputil_altivec.h"
#ifdef CONFIG_DARWIN
@ -303,11 +306,8 @@ int pix_abs8x8_altivec(uint8_t *pix1, uint8_t *pix2, int line_size)
vector signed int sumdiffs;
sad = (vector unsigned int)vec_splat_u32(0);
#ifdef CONFIG_DARWIN
permclear = (vector unsigned char)(255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0);
#else
permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0};
#endif
permclear = (vector unsigned char)AVV(255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0);
for(i=0;i<8;i++) {
/* Read potentially unaligned pixels into t1 and t2
@ -387,11 +387,9 @@ int sse8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size)
vector signed int sumsqr;
sum = (vector unsigned int)vec_splat_u32(0);
#ifdef CONFIG_DARWIN
permclear = (vector unsigned char)(255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0);
#else
permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0};
#endif
permclear = (vector unsigned char)AVV(255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0);
for(i=0;i<8;i++) {
/* Read potentially unaligned pixels into t1 and t2

2
libavcodec/ppc/fft_altivec.c
View File

@ -20,6 +20,8 @@
*/
#include "../dsputil.h"
#include "gcc_fixes.h"
#include "dsputil_altivec.h"
/*

85
libavcodec/ppc/gcc_fixes.h Normal file
View File

@ -0,0 +1,85 @@
/*
* gcc fixes for altivec.
* Used to workaround broken gcc (FSF gcc-3 pre gcc-3.3)
* and to stay somewhat compatible with Darwin.
*/
#ifndef _GCC_FIXES_
#define _GCC_FIXES_
#ifdef HAVE_ALTIVEC_H
#include <altivec.h>
#endif
#ifdef CONFIG_DARWIN
#define AVV(x...) (x)
#else
#define AVV(x...) {x}
#if (__GNUC__ * 100 + __GNUC_MINOR__ < 303)
/* This code was provided to me by Bartosch Pixa
* as a separate header file (broken_mergel.h).
* thanks to lu_zero for the workaround.
*
* See this mail for more information:
* http://gcc.gnu.org/ml/gcc/2003-04/msg00967.html
*/
static inline vector signed char my_vmrglb (vector signed char const A,
vector signed char const B)
{
static const vector unsigned char lowbyte = {
0x08, 0x18, 0x09, 0x19, 0x0a, 0x1a, 0x0b, 0x1b,
0x0c, 0x1c, 0x0d, 0x1d, 0x0e, 0x1e, 0x0f, 0x1f
};
return vec_perm (A, B, lowbyte);
}
static inline vector signed short my_vmrglh (vector signed short const A,
vector signed short const B)
{
static const vector unsigned char lowhalf = {
0x08, 0x09, 0x18, 0x19, 0x0a, 0x0b, 0x1a, 0x1b,
0x0c, 0x0d, 0x1c, 0x1d, 0x0e, 0x0f, 0x1e, 0x1f
};
return vec_perm (A, B, lowhalf);
}
static inline vector signed int my_vmrglw (vector signed int const A,
vector signed int const B)
{
static const vector unsigned char lowword = {
0x08, 0x09, 0x0a, 0x0b, 0x18, 0x19, 0x1a, 0x1b,
0x0c, 0x0d, 0x0e, 0x0f, 0x1c, 0x1d, 0x1e, 0x1f
};
return vec_perm (A, B, lowword);
}
/*#define my_vmrglb my_vmrglb
#define my_vmrglh my_vmrglh
#define my_vmrglw my_vmrglw
*/
#undef vec_mergel
#define vec_mergel(a1, a2) \
__ch (__bin_args_eq (vector signed char, (a1), vector signed char, (a2)), \
((vector signed char) my_vmrglb ((vector signed char) (a1), (vector signed char) (a2))), \
__ch (__bin_args_eq (vector unsigned char, (a1), vector unsigned char, (a2)), \
((vector unsigned char) my_vmrglb ((vector signed char) (a1), (vector signed char) (a2))), \
__ch (__bin_args_eq (vector signed short, (a1), vector signed short, (a2)), \
((vector signed short) my_vmrglh ((vector signed short) (a1), (vector signed short) (a2))), \
__ch (__bin_args_eq (vector unsigned short, (a1), vector unsigned short, (a2)), \
((vector unsigned short) my_vmrglh ((vector signed short) (a1), (vector signed short) (a2))), \
__ch (__bin_args_eq (vector float, (a1), vector float, (a2)), \
((vector float) my_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
__ch (__bin_args_eq (vector signed int, (a1), vector signed int, (a2)), \
((vector signed int) my_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
__ch (__bin_args_eq (vector unsigned int, (a1), vector unsigned int, (a2)), \
((vector unsigned int) my_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
__altivec_link_error_invalid_argument ())))))))
#endif
#endif /* CONFIG_DARWIN */
#endif /* _GCC_FIXES_ */

2
libavcodec/ppc/gmc_altivec.c
View File

@ -20,6 +20,8 @@
#include "../dsputil.h"
#include "gcc_fixes.h"
#include "dsputil_altivec.h"
/*

24
libavcodec/ppc/idct_altivec.c
View File

@ -38,6 +38,9 @@
#include <stdlib.h> /* malloc(), free() */
#include <string.h>
#include "../dsputil.h"
#include "gcc_fixes.h"
#include "dsputil_altivec.h"
#define vector_s16_t vector signed short
@ -152,24 +155,13 @@
vx7 = vec_sra (vy7, shift);
#ifdef CONFIG_DARWIN
static const vector_s16_t constants[5] = {
(vector_s16_t)(23170, 13573, 6518, 21895, -23170, -21895, 32, 31),
(vector_s16_t)(16384, 22725, 21407, 19266, 16384, 19266, 21407, 22725),
(vector_s16_t)(22725, 31521, 29692, 26722, 22725, 26722, 29692, 31521),
(vector_s16_t)(21407, 29692, 27969, 25172, 21407, 25172, 27969, 29692),
(vector_s16_t)(19266, 26722, 25172, 22654, 19266, 22654, 25172, 26722)
(vector_s16_t) AVV(23170, 13573, 6518, 21895, -23170, -21895, 32, 31),
(vector_s16_t) AVV(16384, 22725, 21407, 19266, 16384, 19266, 21407, 22725),
(vector_s16_t) AVV(22725, 31521, 29692, 26722, 22725, 26722, 29692, 31521),
(vector_s16_t) AVV(21407, 29692, 27969, 25172, 21407, 25172, 27969, 29692),
(vector_s16_t) AVV(19266, 26722, 25172, 22654, 19266, 22654, 25172, 26722)
};
#else
// broken gcc
static const vector_s16_t constants[5] = {
(vector_s16_t){23170, 13573, 6518, 21895, -23170, -21895, 32, 31},
(vector_s16_t){16384, 22725, 21407, 19266, 16384, 19266, 21407, 22725},
(vector_s16_t){22725, 31521, 29692, 26722, 22725, 26722, 29692, 31521},
(vector_s16_t){21407, 29692, 27969, 25172, 21407, 25172, 27969, 29692},
(vector_s16_t){19266, 26722, 25172, 22654, 19266, 22654, 25172, 26722}
};
#endif
void idct_put_altivec(uint8_t* dest, int stride, vector_s16_t* block)
{

5
libavcodec/ppc/mpegvideo_altivec.c
View File

@ -15,11 +15,14 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include "../dsputil.h"
#include "../mpegvideo.h"
#include "gcc_fixes.h"
#include "dsputil_altivec.h"
// Swaps two variables (used for altivec registers)