diff options
| author | Gabe Black <gblack@eecs.umich.edu> | 2009-11-15 00:15:42 -0800 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2009-11-15 00:15:42 -0800 |
| commit | 903fb8c73df6feec125204fb4e636468f17b5eec (patch) | |
| tree | af4fa2588000ceac7489ab41d1b522655b730896 /src/arch | |
| parent | b41725f7234e17d6d66d697ef415a4cb1bae80d9 (diff) | |
| download | gem5-903fb8c73df6feec125204fb4e636468f17b5eec.tar.xz | |
ARM: Create a new type of load uop that restores spsr into cpsr.
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/arm/isa/formats/macromem.isa | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/arch/arm/isa/formats/macromem.isa b/src/arch/arm/isa/formats/macromem.isa index 9a3185af3..ad27b5a56 100644 --- a/src/arch/arm/isa/formats/macromem.isa +++ b/src/arch/arm/isa/formats/macromem.isa @@ -72,6 +72,18 @@ let {{ 'predicate_test': predicateTest}, ['IsMicroop']) + microLdrRetUopCode = ''' + Ra = Mem; + Cpsr = cpsrWriteByInstr(Cpsr, Spsr, 0xF, true); + ''' + microLdrRetUopIop = InstObjParams('ldr_ret_uop', 'MicroLdrRetUop', + 'MicroMemOp', + {'memacc_code': microLdrRetUopCode, + 'ea_code': + 'EA = Rb + (UP ? imm : -imm);', + 'predicate_test': predicateTest}, + ['IsMicroop']) + microStrUopIop = InstObjParams('str_uop', 'MicroStrUop', 'MicroMemOp', {'memacc_code': 'Mem = Ra;', @@ -80,14 +92,19 @@ let {{ ['IsMicroop']) header_output = MicroMemDeclare.subst(microLdrUopIop) + \ + MicroMemDeclare.subst(microLdrRetUopIop) + \ MicroMemDeclare.subst(microStrUopIop) decoder_output = MicroConstructor.subst(microLdrUopIop) + \ + MicroConstructor.subst(microLdrRetUopIop) + \ MicroConstructor.subst(microStrUopIop) exec_output = LoadExecute.subst(microLdrUopIop) + \ + LoadExecute.subst(microLdrRetUopIop) + \ StoreExecute.subst(microStrUopIop) + \ LoadInitiateAcc.subst(microLdrUopIop) + \ + LoadInitiateAcc.subst(microLdrRetUopIop) + \ StoreInitiateAcc.subst(microStrUopIop) + \ LoadCompleteAcc.subst(microLdrUopIop) + \ + LoadCompleteAcc.subst(microLdrRetUopIop) + \ StoreCompleteAcc.subst(microStrUopIop) }}; |