| 1 | /*
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| 2 | * gcc fixes for altivec.
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| 3 | * Used to workaround broken gcc (FSF gcc-3 pre gcc-3.3)
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| 4 | * and to stay somewhat compatible with Darwin.
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| 5 | */
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| 6 |
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| 7 | #ifndef _GCC_FIXES_
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| 8 | #define _GCC_FIXES_
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| 9 |
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| 10 | #ifdef HAVE_ALTIVEC_H
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| 11 | #include <altivec.h>
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| 12 | #endif
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| 13 |
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| 14 | #ifdef CONFIG_DARWIN
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| 15 | # ifndef __MWERKS__
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| 16 | # define AVV(x...) (x)
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| 17 | # else
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| 18 | # define AVV
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| 19 | # endif
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| 20 | #define REG_v(a) asm ( #a )
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| 21 | #else
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| 22 |
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| 23 | #define AVV(x...) {x}
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| 24 |
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| 25 | #if (__GNUC__ < 4)
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| 26 | # define REG_v(a)
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| 27 | #else
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| 28 | # define REG_v(a) asm ( #a )
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| 29 | #endif
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| 30 |
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| 31 | #if (__GNUC__ * 100 + __GNUC_MINOR__ < 303)
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| 32 |
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| 33 | /* This code was provided to me by Bartosch Pixa
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| 34 | * as a separate header file (broken_mergel.h).
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| 35 | * thanks to lu_zero for the workaround.
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| 36 | *
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| 37 | * See this mail for more information:
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| 38 | * http://gcc.gnu.org/ml/gcc/2003-04/msg00967.html
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| 39 | */
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| 40 |
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| 41 | static inline vector signed char ff_vmrglb (vector signed char const A,
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| 42 | vector signed char const B)
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| 43 | {
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| 44 | static const vector unsigned char lowbyte = {
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| 45 | 0x08, 0x18, 0x09, 0x19, 0x0a, 0x1a, 0x0b, 0x1b,
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| 46 | 0x0c, 0x1c, 0x0d, 0x1d, 0x0e, 0x1e, 0x0f, 0x1f
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| 47 | };
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| 48 | return vec_perm (A, B, lowbyte);
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| 49 | }
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| 50 |
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| 51 | static inline vector signed short ff_vmrglh (vector signed short const A,
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| 52 | vector signed short const B)
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| 53 | {
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| 54 | static const vector unsigned char lowhalf = {
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| 55 | 0x08, 0x09, 0x18, 0x19, 0x0a, 0x0b, 0x1a, 0x1b,
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| 56 | 0x0c, 0x0d, 0x1c, 0x1d, 0x0e, 0x0f, 0x1e, 0x1f
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| 57 | };
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| 58 | return vec_perm (A, B, lowhalf);
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| 59 | }
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| 60 |
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| 61 | static inline vector signed int ff_vmrglw (vector signed int const A,
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| 62 | vector signed int const B)
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| 63 | {
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| 64 | static const vector unsigned char lowword = {
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| 65 | 0x08, 0x09, 0x0a, 0x0b, 0x18, 0x19, 0x1a, 0x1b,
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| 66 | 0x0c, 0x0d, 0x0e, 0x0f, 0x1c, 0x1d, 0x1e, 0x1f
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| 67 | };
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| 68 | return vec_perm (A, B, lowword);
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| 69 | }
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| 70 | /*#define ff_vmrglb ff_vmrglb
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| 71 | #define ff_vmrglh ff_vmrglh
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| 72 | #define ff_vmrglw ff_vmrglw
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| 73 | */
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| 74 | #undef vec_mergel
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| 75 |
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| 76 | #define vec_mergel(a1, a2) \
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| 77 | __ch (__bin_args_eq (vector signed char, (a1), vector signed char, (a2)), \
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| 78 | ((vector signed char) ff_vmrglb ((vector signed char) (a1), (vector signed char) (a2))), \
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| 79 | __ch (__bin_args_eq (vector unsigned char, (a1), vector unsigned char, (a2)), \
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| 80 | ((vector unsigned char) ff_vmrglb ((vector signed char) (a1), (vector signed char) (a2))), \
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| 81 | __ch (__bin_args_eq (vector signed short, (a1), vector signed short, (a2)), \
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| 82 | ((vector signed short) ff_vmrglh ((vector signed short) (a1), (vector signed short) (a2))), \
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| 83 | __ch (__bin_args_eq (vector unsigned short, (a1), vector unsigned short, (a2)), \
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| 84 | ((vector unsigned short) ff_vmrglh ((vector signed short) (a1), (vector signed short) (a2))), \
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| 85 | __ch (__bin_args_eq (vector float, (a1), vector float, (a2)), \
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| 86 | ((vector float) ff_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
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| 87 | __ch (__bin_args_eq (vector signed int, (a1), vector signed int, (a2)), \
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| 88 | ((vector signed int) ff_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
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| 89 | __ch (__bin_args_eq (vector unsigned int, (a1), vector unsigned int, (a2)), \
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| 90 | ((vector unsigned int) ff_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
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| 91 | __altivec_link_error_invalid_argument ())))))))
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| 92 |
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| 93 | #endif
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| 94 |
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| 95 | #endif /* CONFIG_DARWIN */
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| 96 |
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| 97 | #ifndef __MWERKS__
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| 98 | #define const_vector const vector
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| 99 | #else
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| 100 | #define const_vector vector
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| 101 | #endif
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| 102 |
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| 103 | #endif /* _GCC_FIXES_ */
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