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MIPS: math-emu: Allow m{f,t}hc emulation on MIPS R6 

The mfhc/mthc instructions are supported on MIPS R6 so emulate
them if needed.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # 4.0+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10737/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Markos Chandras 2015-07-17 10:36:03 +01:00 committed by Ralf Baechle
parent 166457436e
commit e8f80cc1a6
1 changed files with 2 additions and 2 deletions
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4
arch/mips/math-emu/cp1emu.c
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@ -1137,7 +1137,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
break; break;
case mfhc_op: case mfhc_op:
if (!cpu_has_mips_r2) if (!cpu_has_mips_r2_r6)
goto sigill; goto sigill;
/* copregister rd -> gpr[rt] */ /* copregister rd -> gpr[rt] */
@ -1148,7 +1148,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
break; break;
case mthc_op: case mthc_op:
if (!cpu_has_mips_r2) if (!cpu_has_mips_r2_r6)
goto sigill; goto sigill;
/* copregister rd <- gpr[rt] */ /* copregister rd <- gpr[rt] */