[PATCH v8 09/30] powerpc: Use a function for byte swapping instructions
Jordan Niethe
jniethe5 at gmail.com
Wed May 6 13:40:29 AEST 2020
Use a function for byte swapping instructions in preparation of a more
complicated instruction type.
Reviewed-by: Balamuruhan S <bala24 at linux.ibm.com>
Signed-off-by: Jordan Niethe <jniethe5 at 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 442a95f20de7..23fd57a86b03 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_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
--
2.17.1
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