Merge tag 'master-2014-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/linvil...

[karo-tx-linux.git] / arch / mips / include / asm / fpregdef.h

diff --git a/arch/mips/include/asm/fpregdef.h b/arch/mips/include/asm/fpregdef.h
index 429481f9028dd08119e9961ab8669c04181a6ad3..f184ba088532635068f1944f858c249675dbd991 100644 (file)
--- a/arch/mips/include/asm/fpregdef.h
+++ b/arch/mips/include/asm/fpregdef.h
@@ -14,6 +14,20 @@
 
 #include <asm/sgidefs.h>
 
+/*
+ * starting with binutils 2.24.51.20140729, MIPS binutils warn about mixing
+ * hardfloat and softfloat object files.  The kernel build uses soft-float by
+ * default, so we also need to pass -msoft-float along to GAS if it supports it.
+ * But this in turn causes assembler errors in files which access hardfloat
+ * registers.  We detect if GAS supports "-msoft-float" in the Makefile and
+ * explicitly put ".set hardfloat" where floating point registers are touched.
+ */
+#ifdef GAS_HAS_SET_HARDFLOAT
+#define SET_HARDFLOAT .set hardfloat
+#else
+#define SET_HARDFLOAT
+#endif
+
 #if _MIPS_SIM == _MIPS_SIM_ABI32
 
 /*