MIPS: dsp: Simplify the DSP macros.

Simplify the DSP macros for vanilla (non-microMIPS) kernels and
toolchains that do not support the DSP ASEs.
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Patchwork: http://patchwork.linux-mips.org/patch/4687/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

arch/mips/include/asm/mipsregs.h

@@ -1314,229 +1314,58 @@ do {									\
 	: "r" (val), "i" (mask));					\
 } while (0)
 
-#define mfhi0()								\
+#define _dsp_mfxxx(ins)							\
 ({									\
 	unsigned long __treg;						\
 									\
 	__asm__ __volatile__(						\
-	"	.set	push			\n"			\
-	"	.set	noat			\n"			\
-	"	# mfhi	%0, $ac0		\n"			\
-	"	.word	0x00000810		\n"			\
-	"	move	%0, $1			\n"			\
-	"	.set	pop			\n"			\
-	: "=r" (__treg));						\
-	__treg;								\
-})
-
-#define mfhi1()								\
-({									\
-	unsigned long __treg;						\
-									\
-	__asm__ __volatile__(						\
-	"	.set	push			\n"			\
-	"	.set	noat			\n"			\
-	"	# mfhi	%0, $ac1		\n"			\
-	"	.word	0x00200810		\n"			\
-	"	move	%0, $1			\n"			\
-	"	.set	pop			\n"			\
-	: "=r" (__treg));						\
-	__treg;								\
-})
-
-#define mfhi2()								\
-({									\
-	unsigned long __treg;						\
-									\
-	__asm__ __volatile__(						\
-	"	.set	push			\n"			\
-	"	.set	noat			\n"			\
-	"	# mfhi	%0, $ac2		\n"			\
-	"	.word	0x00400810		\n"			\
-	"	move	%0, $1			\n"			\
-	"	.set	pop			\n"			\
-	: "=r" (__treg));						\
-	__treg;								\
-})
-
-#define mfhi3()								\
-({									\
-	unsigned long __treg;						\
-									\
-	__asm__ __volatile__(						\
-	"	.set	push			\n"			\
-	"	.set	noat			\n"			\
-	"	# mfhi	%0, $ac3		\n"			\
-	"	.word	0x00600810		\n"			\
-	"	move	%0, $1			\n"			\
-	"	.set	pop			\n"			\
-	: "=r" (__treg));						\
-	__treg;								\
-})
-
-#define mflo0()								\
-({									\
-	unsigned long __treg;						\
-									\
-	__asm__ __volatile__(						\
-	"	.set	push			\n"			\
-	"	.set	noat			\n"			\
-	"	# mflo	%0, $ac0		\n"			\
-	"	.word	0x00000812		\n"			\
-	"	move	%0, $1			\n"			\
-	"	.set	pop			\n"			\
-	: "=r" (__treg));						\
-	__treg;								\
-})
-
-#define mflo1()								\
-({									\
-	unsigned long __treg;						\
-									\
-	__asm__ __volatile__(						\
-	"	.set	push			\n"			\
-	"	.set	noat			\n"			\
-	"	# mflo	%0, $ac1		\n"			\
-	"	.word	0x00200812		\n"			\
-	"	move	%0, $1			\n"			\
-	"	.set	pop			\n"			\
-	: "=r" (__treg));						\
-	__treg;								\
-})
-
-#define mflo2()								\
-({									\
-	unsigned long __treg;						\
-									\
-	__asm__ __volatile__(						\
-	"	.set	push			\n"			\
-	"	.set	noat			\n"			\
-	"	# mflo	%0, $ac2		\n"			\
-	"	.word	0x00400812		\n"			\
-	"	move	%0, $1			\n"			\
-	"	.set	pop			\n"			\
-	: "=r" (__treg));						\
-	__treg;								\
-})
-
-#define mflo3()								\
-({									\
-	unsigned long __treg;						\
-									\
-	__asm__ __volatile__(						\
-	"	.set	push			\n"			\
-	"	.set	noat			\n"			\
-	"	# mflo	%0, $ac3		\n"			\
-	"	.word	0x00600812		\n"			\
-	"	move	%0, $1			\n"			\
-	"	.set	pop			\n"			\
-	: "=r" (__treg));						\
-	__treg;								\
-})
-
-#define mthi0(x)							\
-do {									\
-	__asm__ __volatile__(						\
 	"	.set	push					\n"	\
 	"	.set	noat					\n"	\
-	"	move	$1, %0					\n"	\
-	"	# mthi	$1, $ac0				\n"	\
-	"	.word	0x00200011				\n"	\
+	"	.word	(0x00000810 | %1)			\n"	\
+	"	move	%0, $1					\n"	\
 	"	.set	pop					\n"	\
-	:								\
-	: "r" (x));							\
-} while (0)
+	: "=r" (__treg)							\
+	: "i" (ins));							\
+	__treg;								\
+})
 
-#define mthi1(x)							\
+#define _dsp_mtxxx(val, ins)						\
 do {									\
 	__asm__ __volatile__(						\
 	"	.set	push					\n"	\
 	"	.set	noat					\n"	\
 	"	move	$1, %0					\n"	\
-	"	# mthi	$1, $ac1				\n"	\
-	"	.word	0x00200811				\n"	\
+	"	.word	(0x00200011 | %1)			\n"	\
 	"	.set	pop					\n"	\
 	:								\
-	: "r" (x));							\
+	: "r" (val), "i" (ins));					\
 } while (0)
 
-#define mthi2(x)							\
-do {									\
-	__asm__ __volatile__(						\
-	"	.set	push					\n"	\
-	"	.set	noat					\n"	\
-	"	move	$1, %0					\n"	\
-	"	# mthi	$1, $ac2				\n"	\
-	"	.word	0x00201011				\n"	\
-	"	.set	pop					\n"	\
-	:								\
-	: "r" (x));							\
-} while (0)
+#define _dsp_mflo(reg) _dsp_mfxxx((reg << 21) | 0x0002)
+#define _dsp_mfhi(reg) _dsp_mfxxx((reg << 21) | 0x0000)
 
-#define mthi3(x)							\
-do {									\
-	__asm__ __volatile__(						\
-	"	.set	push					\n"	\
-	"	.set	noat					\n"	\
-	"	move	$1, %0					\n"	\
-	"	# mthi	$1, $ac3				\n"	\
-	"	.word	0x00201811				\n"	\
-	"	.set	pop					\n"	\
-	:								\
-	: "r" (x));							\
-} while (0)
+#define _dsp_mtlo(val, reg) _dsp_mtxxx(val, ((reg << 11) | 0x0002))
+#define _dsp_mthi(val, reg) _dsp_mtxxx(val, ((reg << 11) | 0x0000))
 
-#define mtlo0(x)							\
-do {									\
-	__asm__ __volatile__(						\
-	"	.set	push					\n"	\
-	"	.set	noat					\n"	\
-	"	move	$1, %0					\n"	\
-	"	# mtlo	$1, $ac0				\n"	\
-	"	.word	0x00200013				\n"	\
-	"	.set	pop					\n"	\
-	:								\
-	: "r" (x));							\
-} while (0)
+#define mflo0() _dsp_mflo(0)
+#define mflo1() _dsp_mflo(1)
+#define mflo2() _dsp_mflo(2)
+#define mflo3() _dsp_mflo(3)
 
-#define mtlo1(x)							\
-do {									\
-	__asm__ __volatile__(						\
-	"	.set	push					\n"	\
-	"	.set	noat					\n"	\
-	"	move	$1, %0					\n"	\
-	"	# mtlo	$1, $ac1				\n"	\
-	"	.word	0x00200813				\n"	\
-	"	.set	pop					\n"	\
-	:								\
-	: "r" (x));							\
-} while (0)
+#define mfhi0() _dsp_mfhi(0)
+#define mfhi1() _dsp_mfhi(1)
+#define mfhi2() _dsp_mfhi(2)
+#define mfhi3() _dsp_mfhi(3)
 
-#define mtlo2(x)							\
-do {									\
-	__asm__ __volatile__(						\
-	"	.set	push					\n"	\
-	"	.set	noat					\n"	\
-	"	move	$1, %0					\n"	\
-	"	# mtlo	$1, $ac2				\n"	\
-	"	.word	0x00201013				\n"	\
-	"	.set	pop					\n"	\
-	:								\
-	: "r" (x));							\
-} while (0)
+#define mtlo0(x) _dsp_mtlo(x, 0)
+#define mtlo1(x) _dsp_mtlo(x, 1)
+#define mtlo2(x) _dsp_mtlo(x, 2)
+#define mtlo3(x) _dsp_mtlo(x, 3)
 
-#define mtlo3(x)							\
-do {									\
-	__asm__ __volatile__(						\
-	"	.set	push					\n"	\
-	"	.set	noat					\n"	\
-	"	move	$1, %0					\n"	\
-	"	# mtlo	$1, $ac3				\n"	\
-	"	.word	0x00201813				\n"	\
-	"	.set	pop					\n"	\
-	:								\
-	: "r" (x));							\
-} while (0)
+#define mthi0(x) _dsp_mthi(x, 0)
+#define mthi1(x) _dsp_mthi(x, 1)
+#define mthi2(x) _dsp_mthi(x, 2)
+#define mthi3(x) _dsp_mthi(x, 3)
 
 #endif /* CONFIG_CPU_MICROMIPS */
 #endif