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MIPS: math-emu: For MFHC1/MTHC1 also return SIGILL right away 

Update commit 1ac944007b ("MIPS: math-emu: Add mfhc1 & mthc1
support.") and like done throughout `cop1Emulate' for other cases also
for the MFHC1 and MTHC1 instructions return SIGILL right away rather
than jumping to a single `return' statement.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16401/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
Maciej W. Rozycki 2017-06-16 00:16:15 +01:00 committed by Ralf Baechle
parent 27fe2200da
commit 70f743d141
1 changed files with 2 additions and 3 deletions
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5
arch/mips/math-emu/cp1emu.c
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@ -1142,7 +1142,7 @@ emul:
case mfhc_op:
if (!cpu_has_mips_r2_r6)
goto sigill;
return SIGILL;
/* copregister rd -> gpr[rt] */
if (MIPSInst_RT(ir) != 0) {
@ -1153,7 +1153,7 @@ emul:
case mthc_op:
if (!cpu_has_mips_r2_r6)
goto sigill;
return SIGILL;
/* copregister rd <- gpr[rt] */
SITOHREG(xcp->regs[MIPSInst_RT(ir)], MIPSInst_RD(ir));
@ -1376,7 +1376,6 @@ branch_common:
xcp->regs[MIPSInst_RS(ir)];
break;
default:
sigill:
return SIGILL;
}