From aabd2233b6aefeee6d7a2f667076d8346be1d30a Mon Sep 17 00:00:00 2001 From: Jordan Niethe Date: Wed, 6 May 2020 13:40:29 +1000 Subject: [PATCH] powerpc: Use a function for byte swapping instructions Use a function for byte swapping instructions in preparation of a more complicated instruction type. Signed-off-by: Jordan Niethe Signed-off-by: Michael Ellerman Reviewed-by: Balamuruhan S Link: https://lore.kernel.org/r/20200506034050.24806-10-jniethe5@gmail.com --- arch/powerpc/include/asm/inst.h | 5 +++++ arch/powerpc/kernel/align.c | 2 +- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/inst.h b/arch/powerpc/include/asm/inst.h index 09b4ec7debc1..ff2c8fe3e262 100644 --- a/arch/powerpc/include/asm/inst.h +++ b/arch/powerpc/include/asm/inst.h @@ -18,4 +18,9 @@ static inline int ppc_inst_primary_opcode(u32 x) return ppc_inst_val(x) >> 26; } +static inline u32 ppc_inst_swab(u32 x) +{ + return ppc_inst(swab32(ppc_inst_val(x))); +} + #endif /* _ASM_POWERPC_INST_H */ diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c index 47dbba81a227..a63216da8cf1 100644 --- a/arch/powerpc/kernel/align.c +++ b/arch/powerpc/kernel/align.c @@ -310,7 +310,7 @@ int fix_alignment(struct pt_regs *regs) /* We don't handle PPC little-endian any more... */ if (cpu_has_feature(CPU_FTR_PPC_LE)) return -EIO; - instr = swab32(instr); + instr = ppc_inst_swab(instr); } #ifdef CONFIG_SPE