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68 lines
2.0 KiB
68 lines
2.0 KiB
--- a/fixed.h
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+++ b/fixed.h
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@@ -299,6 +299,23 @@ mad_fixed_t mad_f_mul_inline(mad_fixed_t
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# elif defined(FPM_MIPS)
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+/* Test for gcc >= maj.min, as per __GNUC_PREREQ in glibc */
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+#if defined (__GNUC__) && defined (__GNUC_MINOR__)
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+#define __GNUC_PREREQ(maj, min) \
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+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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+#else
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+#define __GNUC_PREREQ(maj, min) 0
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+#endif
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+
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+#if __GNUC_PREREQ(4,4)
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+ typedef unsigned int u64_di_t __attribute__ ((mode (DI)));
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+# define MAD_F_MLX(hi, lo, x, y) \
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+ do { \
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+ u64_di_t __ll = (u64_di_t) (x) * (y); \
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+ hi = __ll >> 32; \
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+ lo = __ll; \
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+ } while (0)
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+#else
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/*
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* This MIPS version is fast and accurate; the disposition of the least
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* significant bit depends on OPT_ACCURACY via mad_f_scale64().
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@@ -328,6 +345,7 @@ mad_fixed_t mad_f_mul_inline(mad_fixed_t
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: "%r" ((x) >> 12), "r" ((y) >> 16))
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# define MAD_F_MLZ(hi, lo) ((mad_fixed_t) (lo))
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# endif
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+#endif /* __GNU_PREREQ(4,4) */
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# if defined(OPT_SPEED)
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# define mad_f_scale64(hi, lo) \
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--- a/mad.h
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+++ b/mad.h
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@@ -344,6 +344,23 @@ mad_fixed_t mad_f_mul_inline(mad_fixed_t
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# elif defined(FPM_MIPS)
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+/* Test for gcc >= maj.min, as per __GNUC_PREREQ in glibc */
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+#if defined (__GNUC__) && defined (__GNUC_MINOR__)
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+#define __GNUC_PREREQ(maj, min) \
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+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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+#else
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+#define __GNUC_PREREQ(maj, min) 0
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+#endif
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+
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+#if __GNUC_PREREQ(4,4)
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+ typedef unsigned int u64_di_t __attribute__ ((mode (DI)));
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+# define MAD_F_MLX(hi, lo, x, y) \
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+ do { \
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+ u64_di_t __ll = (u64_di_t) (x) * (y); \
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+ hi = __ll >> 32; \
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+ lo = __ll; \
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+ } while (0)
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+#else
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/*
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* This MIPS version is fast and accurate; the disposition of the least
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* significant bit depends on OPT_ACCURACY via mad_f_scale64().
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@@ -373,6 +390,7 @@ mad_fixed_t mad_f_mul_inline(mad_fixed_t
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: "%r" ((x) >> 12), "r" ((y) >> 16))
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# define MAD_F_MLZ(hi, lo) ((mad_fixed_t) (lo))
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# endif
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+#endif /* __GNU_PREREQ(4,4) */
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# if defined(OPT_SPEED)
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# define mad_f_scale64(hi, lo) \
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