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| author | James Hogan <james.hogan@imgtec.com> | 2016-06-23 17:34:38 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-07-05 16:08:40 +0200 |
| commit | 6f63405cb67bc4424cd7cada11783dcef0f8b3c2 (patch) | |
| tree | fb873b19d51384360b22bdb7d8f9dca62d5788c8 /arch/mips | |
| parent | 9f730a60e5a046230cff8c9f4c8eb73f6dca7d81 (diff) | |
| download | linux-6f63405cb67bc4424cd7cada11783dcef0f8b3c2.tar.bz2 | |
MIPS: uasm: Add r6 MUL encoding
Add the R6 MUL instruction encoding for 3 operand signed multiply to
uasm so that KVM can use uasm for generating its entry point code at
runtime on R6.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/uapi/asm/inst.h | 44 | ||||
| -rw-r--r-- | arch/mips/mm/uasm-mips.c | 4 |
2 files changed, 48 insertions, 0 deletions
diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h index 6319c5037e66..fc96012c75d1 100644 --- a/arch/mips/include/uapi/asm/inst.h +++ b/arch/mips/include/uapi/asm/inst.h @@ -93,6 +93,50 @@ enum spec3_op { }; /* + * Bits 10-6 minor opcode for r6 spec mult/div encodings + */ +enum mult_op { + mult_mult_op = 0x0, + mult_mul_op = 0x2, + mult_muh_op = 0x3, +}; +enum multu_op { + multu_multu_op = 0x0, + multu_mulu_op = 0x2, + multu_muhu_op = 0x3, +}; +enum div_op { + div_div_op = 0x0, + div_div6_op = 0x2, + div_mod_op = 0x3, +}; +enum divu_op { + divu_divu_op = 0x0, + divu_divu6_op = 0x2, + divu_modu_op = 0x3, +}; +enum dmult_op { + dmult_dmult_op = 0x0, + dmult_dmul_op = 0x2, + dmult_dmuh_op = 0x3, +}; +enum dmultu_op { + dmultu_dmultu_op = 0x0, + dmultu_dmulu_op = 0x2, + dmultu_dmuhu_op = 0x3, +}; +enum ddiv_op { + ddiv_ddiv_op = 0x0, + ddiv_ddiv6_op = 0x2, + ddiv_dmod_op = 0x3, +}; +enum ddivu_op { + ddivu_ddivu_op = 0x0, + ddivu_ddivu6_op = 0x2, + ddivu_dmodu_op = 0x3, +}; + +/* * rt field of bcond opcodes. */ enum rt_op { diff --git a/arch/mips/mm/uasm-mips.c b/arch/mips/mm/uasm-mips.c index 86a3c76a1ad8..cec524167822 100644 --- a/arch/mips/mm/uasm-mips.c +++ b/arch/mips/mm/uasm-mips.c @@ -121,7 +121,11 @@ static struct insn insn_table[] = { { insn_mthc0, M(cop0_op, mthc0_op, 0, 0, 0, 0), RT | RD | SET}, { insn_mthi, M(spec_op, 0, 0, 0, 0, mthi_op), RS }, { insn_mtlo, M(spec_op, 0, 0, 0, 0, mtlo_op), RS }, +#ifndef CONFIG_CPU_MIPSR6 { insn_mul, M(spec2_op, 0, 0, 0, 0, mul_op), RS | RT | RD}, +#else + { insn_mul, M(spec_op, 0, 0, 0, mult_mul_op, mult_op), RS | RT | RD}, +#endif { insn_ori, M(ori_op, 0, 0, 0, 0, 0), RS | RT | UIMM }, { insn_or, M(spec_op, 0, 0, 0, 0, or_op), RS | RT | RD }, #ifndef CONFIG_CPU_MIPSR6 |