MIPS: microMIPS: mfhc1 & mthc1 support for the FPU emulator
This patch adds support for microMIPS encodings of the mfhc1 & mthc1
instructions introduced in release 2 of the mips32 & mips64
architectures, converting them to their mips32 equivalents for the FPU
emulator.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6110/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index 0ee9656..b39ba25 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -398,8 +398,10 @@
mm_movt1_op = 0xa5,
mm_ftruncw_op = 0xac,
mm_fneg1_op = 0xad,
+ mm_mfhc1_op = 0xc0,
mm_froundl_op = 0xcc,
mm_fcvtd1_op = 0xcd,
+ mm_mthc1_op = 0xe0,
mm_froundw_op = 0xec,
mm_fcvts1_op = 0xed,
};
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index aaf7c92..0e47ae2 100644
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -417,14 +417,20 @@
case mm_mtc1_op:
case mm_cfc1_op:
case mm_ctc1_op:
+ case mm_mfhc1_op:
+ case mm_mthc1_op:
if (insn.mm_fp1_format.op == mm_mfc1_op)
op = mfc_op;
else if (insn.mm_fp1_format.op == mm_mtc1_op)
op = mtc_op;
else if (insn.mm_fp1_format.op == mm_cfc1_op)
op = cfc_op;
- else
+ else if (insn.mm_fp1_format.op == mm_ctc1_op)
op = ctc_op;
+ else if (insn.mm_fp1_format.op == mm_mfhc1_op)
+ op = mfhc_op;
+ else
+ op = mthc_op;
mips32_insn.fp1_format.opcode = cop1_op;
mips32_insn.fp1_format.op = op;
mips32_insn.fp1_format.rt =