mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-27 06:42:14 -05:00
c0eac5a862
* gnu/packages/patches/libmad-armv7-thumb-pt1.patch, gnu/packages/patches/libmad-armv7-thumb-pt2.patch, gnu/packages/patches/libmad-frame-length.patch: New files. * gnu-system.am (dist_patch_DATA): Add them. * gnu/packages/mp3.scm (libmad)[source]: Add patches.
36 lines
1,023 B
Diff
36 lines
1,023 B
Diff
Copied from Debian.
|
|
|
|
From: Dave Martin
|
|
Subject: "rsc" doesnt exist anymore in thumb2
|
|
|
|
diff --git a/fixed.h b/fixed.h
|
|
index 4b58abf..ba4bc26 100644
|
|
--- a/fixed.h
|
|
+++ b/fixed.h
|
|
@@ -275,12 +275,25 @@ mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y)
|
|
: "+r" (lo), "+r" (hi) \
|
|
: "%r" (x), "r" (y))
|
|
|
|
+#ifdef __thumb__
|
|
+/* In Thumb-2, the RSB-immediate instruction is only allowed with a zero
|
|
+ operand. If needed this code can also support Thumb-1
|
|
+ (simply append "s" to the end of the second two instructions). */
|
|
+# define MAD_F_MLN(hi, lo) \
|
|
+ asm ("rsbs %0, %0, #0\n\t" \
|
|
+ "sbc %1, %1, %1\n\t" \
|
|
+ "sub %1, %1, %2" \
|
|
+ : "+&r" (lo), "=&r" (hi) \
|
|
+ : "r" (hi) \
|
|
+ : "cc")
|
|
+#else /* ! __thumb__ */
|
|
# define MAD_F_MLN(hi, lo) \
|
|
asm ("rsbs %0, %2, #0\n\t" \
|
|
"rsc %1, %3, #0" \
|
|
- : "=r" (lo), "=r" (hi) \
|
|
+ : "=&r" (lo), "=r" (hi) \
|
|
: "0" (lo), "1" (hi) \
|
|
: "cc")
|
|
+#endif /* __thumb__ */
|
|
|
|
# define mad_f_scale64(hi, lo) \
|
|
({ mad_fixed_t __result; \
|