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@xxxxxxxxxx> --- arch/mips/include/asm/asmmacro.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h index 6c8342a..1d2c9c2 100644 --- a/arch/mips/include/asm/asmmacro.h +++ b/arch/mips/include/asm/asmmacro.h @@ -62,6 +62,17 @@ .endm #endif /* CONFIG_MIPS_MT_SMTC */ +#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 */ -- 1.8.4.2
