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| author | Gabe Black <gblack@eecs.umich.edu> | 2009-07-01 22:11:54 -0700 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2009-07-01 22:11:54 -0700 |
| commit | 4f98171479c8b9f8544665a19520e279fcd30f5b (patch) | |
| tree | 087b117a27c3a3545720f475fcd6fc45f1146562 /src/arch | |
| parent | b8f064c88c48c549987a13eb4f4350bc6745ab15 (diff) | |
| download | gem5-4f98171479c8b9f8544665a19520e279fcd30f5b.tar.xz | |
ARM: Decode some media instructions. These are untested.
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/arm/isa/bitfields.isa | 2 | ||||
| -rw-r--r-- | src/arch/arm/isa/decoder.isa | 54 | ||||
| -rw-r--r-- | src/arch/arm/types.hh | 1 |
3 files changed, 57 insertions, 0 deletions
diff --git a/src/arch/arm/isa/bitfields.isa b/src/arch/arm/isa/bitfields.isa index 37b84e282..c9f15ff59 100644 --- a/src/arch/arm/isa/bitfields.isa +++ b/src/arch/arm/isa/bitfields.isa @@ -37,6 +37,8 @@ def bitfield ENCODING encoding; def bitfield OPCODE opcode; def bitfield OPCODE_24_23 opcode24_23; +def bitfield MEDIA_OPCODE mediaOpcode; +def bitfield MEDIA_OPCODE2 mediaOpcode2; def bitfield OPCODE_24 opcode24; def bitfield OPCODE_23_20 opcode23_20; def bitfield OPCODE_23_21 opcode23_21; diff --git a/src/arch/arm/isa/decoder.isa b/src/arch/arm/isa/decoder.isa index c43a550a7..e0715312b 100644 --- a/src/arch/arm/isa/decoder.isa +++ b/src/arch/arm/isa/decoder.isa @@ -566,6 +566,60 @@ format DataOp { Rn = Rn + Rm_Imm; }}, {{ EA = Rn + Rm_Imm; }}); } + 1: decode MEDIA_OPCODE { + 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7: WarnUnimpl::parallel_add_subtract_instructions(); + 0x8: decode MISC_OPCODE { + 0x1, 0x9: WarnUnimpl::pkhbt(); + 0x7: WarnUnimpl::sxtab16(); + 0xb: WarnUnimpl::sel(); + 0x5, 0xd: WarnUnimpl::pkhtb(); + 0x3: WarnUnimpl::sign_zero_extend_add(); + } + 0xa, 0xb: decode SHIFT { + 0x0, 0x2: WarnUnimpl::ssat(); + 0x1: WarnUnimpl::ssat16(); + } + 0xe, 0xf: decode SHIFT { + 0x0, 0x2: WarnUnimpl::usat(); + 0x1: WarnUnimpl::usat16(); + } + 0x10: decode RN { + 0xf: decode MISC_OPCODE { + 0x1: WarnUnimpl::smuad(); + 0x3: WarnUnimpl::smuadx(); + 0x5: WarnUnimpl::smusd(); + 0x7: WarnUnimpl::smusdx(); + } + default: decode MISC_OPCODE { + 0x1: WarnUnimpl::smlad(); + 0x3: WarnUnimpl::smladx(); + 0x5: WarnUnimpl::smlsd(); + 0x7: WarnUnimpl::smlsdx(); + } + } + 0x14: decode MISC_OPCODE { + 0x1: WarnUnimpl::smlald(); + 0x3: WarnUnimpl::smlaldx(); + 0x5: WarnUnimpl::smlsld(); + 0x7: WarnUnimpl::smlsldx(); + } + 0x15: decode RN { + 0xf: decode MISC_OPCODE { + 0x1: WarnUnimpl::smmul(); + 0x3: WarnUnimpl::smmulr(); + } + default: decode MISC_OPCODE { + 0x1: WarnUnimpl::smmla(); + 0x3: WarnUnimpl::smmlar(); + 0xd: WarnUnimpl::smmls(); + 0xf: WarnUnimpl::smmlsr(); + } + } + 0x18: decode RN { + 0xf: WarnUnimpl::usada8(); + default: WarnUnimpl::usad8(); + } + } } 0x4: decode PUSWL { // Right now we only handle cases when S (PSRUSER) is not set diff --git a/src/arch/arm/types.hh b/src/arch/arm/types.hh index cff6b123c..707d7d0f6 100644 --- a/src/arch/arm/types.hh +++ b/src/arch/arm/types.hh @@ -46,6 +46,7 @@ namespace ArmISA // All the different types of opcode fields. Bitfield<27, 25> encoding; Bitfield<24, 21> opcode; + Bitfield<24, 20> mediaOpcode; Bitfield<24, 23> opcode24_23; Bitfield<24> opcode24; Bitfield<23, 20> opcode23_20; |