mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-05 20:04:19 +08:00
MIPS: Handle OCTEON BBIT instructions in FPU emulator.
The branch emulation needs to handle the OCTEON BBIT instructions, otherwise we get SIGILL instead of emulation. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5726/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
parent
e5d081f468
commit
c26d421987
@ -803,6 +803,32 @@ static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
|
||||
dec_insn.next_pc_inc;
|
||||
return 1;
|
||||
break;
|
||||
#ifdef CONFIG_CPU_CAVIUM_OCTEON
|
||||
case lwc2_op: /* This is bbit0 on Octeon */
|
||||
if ((regs->regs[insn.i_format.rs] & (1ull<<insn.i_format.rt)) == 0)
|
||||
*contpc = regs->cp0_epc + 4 + (insn.i_format.simmediate << 2);
|
||||
else
|
||||
*contpc = regs->cp0_epc + 8;
|
||||
return 1;
|
||||
case ldc2_op: /* This is bbit032 on Octeon */
|
||||
if ((regs->regs[insn.i_format.rs] & (1ull<<(insn.i_format.rt + 32))) == 0)
|
||||
*contpc = regs->cp0_epc + 4 + (insn.i_format.simmediate << 2);
|
||||
else
|
||||
*contpc = regs->cp0_epc + 8;
|
||||
return 1;
|
||||
case swc2_op: /* This is bbit1 on Octeon */
|
||||
if (regs->regs[insn.i_format.rs] & (1ull<<insn.i_format.rt))
|
||||
*contpc = regs->cp0_epc + 4 + (insn.i_format.simmediate << 2);
|
||||
else
|
||||
*contpc = regs->cp0_epc + 8;
|
||||
return 1;
|
||||
case sdc2_op: /* This is bbit132 on Octeon */
|
||||
if (regs->regs[insn.i_format.rs] & (1ull<<(insn.i_format.rt + 32)))
|
||||
*contpc = regs->cp0_epc + 4 + (insn.i_format.simmediate << 2);
|
||||
else
|
||||
*contpc = regs->cp0_epc + 8;
|
||||
return 1;
|
||||
#endif
|
||||
case cop0_op:
|
||||
case cop1_op:
|
||||
case cop2_op:
|
||||
|
Loading…
Reference in New Issue
Block a user