gnu/packages/patches/libmad-armv7-thumb-pt2.patch

   1 Copied from Debian.
   2
   3 From: Dave Martin
   4 Subject: "rsc" doesnt exist anymore in thumb2
   5
   6 diff --git a/fixed.h b/fixed.h
   7 index 4b58abf..ba4bc26 100644
   8 --- a/fixed.h
   9 +++ b/fixed.h
  10 @@ -275,12 +275,25 @@ mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y)
  11          : "+r" (lo), "+r" (hi)  \
  12          : "%r" (x), "r" (y))
  13
  14 +#ifdef __thumb__
  15 +/* In Thumb-2, the RSB-immediate instruction is only allowed with a zero
  16 +       operand.  If needed this code can also support Thumb-1
  17 +       (simply append "s" to the end of the second two instructions). */
  18 +#  define MAD_F_MLN(hi, lo)  \
  19 +    asm ("rsbs        %0, %0, #0\n\t"  \
  20 +        "sbc   %1, %1, %1\n\t"  \
  21 +        "sub   %1, %1, %2"  \
  22 +        : "+&r" (lo), "=&r" (hi)  \
  23 +        : "r" (hi)  \
  24 +        : "cc")
  25 +#else /* ! __thumb__ */
  26  #  define MAD_F_MLN(hi, lo)  \
  27      asm ("rsbs %0, %2, #0\n\t"  \
  28          "rsc   %1, %3, #0"  \
  29 -        : "=r" (lo), "=r" (hi)  \
  30 +        : "=&r" (lo), "=r" (hi)  \
  31          : "0" (lo), "1" (hi)  \
  32          : "cc")
  33 +#endif /* __thumb__ */
  34
  35  #  define mad_f_scale64(hi, lo)  \
  36      ({ mad_fixed_t __result;  \