Commit 1d688087 authored Jan 15, 2014 by Paul Burton Committed by Ralf Baechle Mar 06, 2014

MIPS: Introduce _EXT assembler macro



This patch adds a simple macro to wrap the ext instruction which was
introduced with MIPSR2, and fall back to a shift & and pair for
pre-MIPSR2 CPUs. This will be used in a subsequent patch.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6358/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 6d9727a7

arch/mips/include/asm/asmmacro.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -169,6 +169,17 @@
		fpu_restore_16even \thread \tmp
		.endm

		#ifdef CONFIG_CPU_MIPSR2
		.macro _EXT rd, rs, p, s
		ext \rd, \rs, \p, \s
		.endm
		#else /* !CONFIG_CPU_MIPSR2 */
		.macro _EXT rd, rs, p, s
		srl \rd, \rs, \p
		andi \rd, \rd, (1 << \s) - 1
		.endm
		#endif /* !CONFIG_CPU_MIPSR2 */

		/*
		* Temporary until all gas have MT ASE support
		*/