diff options
author | Zi Shen Lim | 2014-08-27 05:15:27 +0100 |
---|---|---|
committer | Will Deacon | 2014-09-08 14:39:20 +0100 |
commit | 6481063989283f7cbeb0b6c38506ba4dd319f93a (patch) | |
tree | 3eca293e1918a99250bc489329ce59da22216f63 /arch/arm64/kernel | |
parent | 546dd36b44613c770655531ee3ada6a9e9907d71 (diff) |
arm64: introduce aarch64_insn_gen_data2()
Introduce function to generate data-processing (2 source) instructions.
Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel')
-rw-r--r-- | arch/arm64/kernel/insn.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c index 81ef3b59348b..c054164c677b 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -784,3 +784,51 @@ u32 aarch64_insn_gen_data1(enum aarch64_insn_register dst, return aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RN, insn, src); } + +u32 aarch64_insn_gen_data2(enum aarch64_insn_register dst, + enum aarch64_insn_register src, + enum aarch64_insn_register reg, + enum aarch64_insn_variant variant, + enum aarch64_insn_data2_type type) +{ + u32 insn; + + switch (type) { + case AARCH64_INSN_DATA2_UDIV: + insn = aarch64_insn_get_udiv_value(); + break; + case AARCH64_INSN_DATA2_SDIV: + insn = aarch64_insn_get_sdiv_value(); + break; + case AARCH64_INSN_DATA2_LSLV: + insn = aarch64_insn_get_lslv_value(); + break; + case AARCH64_INSN_DATA2_LSRV: + insn = aarch64_insn_get_lsrv_value(); + break; + case AARCH64_INSN_DATA2_ASRV: + insn = aarch64_insn_get_asrv_value(); + break; + case AARCH64_INSN_DATA2_RORV: + insn = aarch64_insn_get_rorv_value(); + break; + default: + BUG_ON(1); + } + + switch (variant) { + case AARCH64_INSN_VARIANT_32BIT: + break; + case AARCH64_INSN_VARIANT_64BIT: + insn |= AARCH64_INSN_SF_BIT; + break; + default: + BUG_ON(1); + } + + insn = aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RD, insn, dst); + + insn = aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RN, insn, src); + + return aarch64_insn_encode_register(AARCH64_INSN_REGTYPE_RM, insn, reg); +} |