用arm-linux-gnueabihf移植MP3播放器libmad-0.15.1b的時候出現錯誤提示
阿新 • • 發佈：2017-08-05
移植 else /dev/null -- b- line .com ibm fail
/* */>
+
+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; diff --git a/package/libmad/libmad-0.15.1b-thumb2-imdct-arm.patch b/package/libmad/libmad-0.15.1b-thumb2-imdct-arm.patch
new file mode 100644
index 0000000..414b9c8
--- /dev/null
+++ b/package/libmad/libmad-0.15.1b-thumb2-imdct-arm.patch
@@ -0,0 +1,20 @@
+Fixes Thumb2 related build failure
+
+Patch below comes from the Debian libmad package.
+
+Signed-off-by: Thomas Petazzoni <[email protected]diff --git a/package/libmad/libmad-0.15.1b-thumb2-fixed-arm.patch b/package/libmad/libmad-0.15.1b-thumb2-fixed-arm.patch
new file mode 100644
index 0000000..befda48
--- /dev/null
+++ b/package/libmad/libmad-0.15.1b-thumb2-fixed-arm.patch
@@ -0,0 +1,40 @@
+Fixes Thumb2-related build failure
+
+Patch below comes from the Debian libmad package.
+
+Signed-off-by: Thomas Petazzoni <[email protected]