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powerpc: Use a function for getting the instruction op code

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In preparation for using a data type for instructions that can not be
directly used with the '>>' operator use a function for getting the op
code of an instruction.

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-9-jniethe5@gmail.com
This commit is contained in:
Jordan Niethe
2020-05-06 13:40:28 +10:00
committed by Michael Ellerman
parent 777e26f0ed
commit 8094892d1a
6 changed files with 13 additions and 6 deletions
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3
arch/powerpc/kernel/vecemu.c
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@@ -10,6 +10,7 @@
#include <asm/processor.h>
#include <asm/switch_to.h>
#include <linux/uaccess.h>
#include <asm/inst.h>
/* Functions in vector.S */
extern void vaddfp(vector128 *dst, vector128 *a, vector128 *b);
@@ -268,7 +269,7 @@ int emulate_altivec(struct pt_regs *regs)
return -EFAULT;
word = ppc_inst_val(instr);
if ((word >> 26) != 4)
if (ppc_inst_primary_opcode(instr) != 4)
return -EINVAL; /* not an altivec instruction */
vd = (word >> 21) & 0x1f;
va = (word >> 16) & 0x1f;