parisc/unaligned: Fix ldw() and stw() unalignment handlers
commit a972798368
upstream.
Fix 3 bugs:
a) emulate_stw() doesn't return the error code value, so faulting
instructions are not reported and aborted.
b) Tell emulate_ldw() to handle fldw_l as floating point instruction
c) Tell emulate_ldw() to handle ldw_m as integer instruction
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Родитель
bf0b3d61e0
Коммит
759e5dc655
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@ -340,7 +340,7 @@ static int emulate_stw(struct pt_regs *regs, int frreg, int flop)
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: "r" (val), "r" (regs->ior), "r" (regs->isr)
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: "r19", "r20", "r21", "r22", "r1", FIXUP_BRANCH_CLOBBER );
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return 0;
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return ret;
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}
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static int emulate_std(struct pt_regs *regs, int frreg, int flop)
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{
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@ -619,10 +619,10 @@ void handle_unaligned(struct pt_regs *regs)
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{
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case OPCODE_FLDW_L:
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flop=1;
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ret = emulate_ldw(regs, R2(regs->iir),0);
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ret = emulate_ldw(regs, R2(regs->iir), 1);
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break;
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case OPCODE_LDW_M:
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ret = emulate_ldw(regs, R2(regs->iir),1);
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ret = emulate_ldw(regs, R2(regs->iir), 0);
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break;
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case OPCODE_FSTW_L:
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