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| author | Markos Chandras <markos.chandras@imgtec.com> | 2014-11-26 16:43:11 +0100 |
|---|---|---|
| committer | Markos Chandras <markos.chandras@imgtec.com> | 2015-02-17 16:37:35 +0100 |
| commit | 84fef630127aa90ef547ddd018d3dc47b1e79a1e (patch) | |
| tree | 0331c9646f7c6b25aeb46e0fcece9046d420a1d1 /arch/mips/kernel | |
| parent | MIPS: Emulate the new MIPS R6 BNVC, BNEC and BNEZLAC instructions (diff) | |
| download | linux-84fef630127aa90ef547ddd018d3dc47b1e79a1e.tar.xz linux-84fef630127aa90ef547ddd018d3dc47b1e79a1e.zip | |
MIPS: Emulate the new MIPS R6 BALC instruction
MIPS R6 uses the <R6 swc2 opcode for the new BALC instructions.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/branch.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c index 37c752757346..1f28724d23e5 100644 --- a/arch/mips/kernel/branch.c +++ b/arch/mips/kernel/branch.c @@ -789,6 +789,16 @@ int __compute_return_epc_for_insn(struct pt_regs *regs, } regs->cp0_epc += 8; break; + case balc6_op: + if (!cpu_has_mips_r6) { + ret = -SIGILL; + break; + } + /* Compact branch: BALC */ + regs->regs[31] = epc + 4; + epc += 4 + (insn.i_format.simmediate << 2); + regs->cp0_epc = epc; + break; #endif case cbcond0_op: case cbcond1_op: |