diff options
Diffstat (limited to 'src/arch/arm/isa/insts')
| -rw-r--r-- | src/arch/arm/isa/insts/misc.isa | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/arch/arm/isa/insts/misc.isa b/src/arch/arm/isa/insts/misc.isa index c7caf5cb7..2e3fb2031 100644 --- a/src/arch/arm/isa/insts/misc.isa +++ b/src/arch/arm/isa/insts/misc.isa @@ -546,4 +546,35 @@ let {{ header_output += ImmOpDeclare.subst(setendIop) decoder_output += ImmOpConstructor.subst(setendIop) exec_output += PredOpExecute.subst(setendIop) + + cpsCode = ''' + uint32_t mode = bits(imm, 4, 0); + uint32_t f = bits(imm, 5); + uint32_t i = bits(imm, 6); + uint32_t a = bits(imm, 7); + bool setMode = bits(imm, 8); + bool enable = bits(imm, 9); + CPSR cpsr = Cpsr; + if (cpsr.mode != MODE_USER) { + if (enable) { + if (f) cpsr.f = 0; + if (i) cpsr.i = 0; + if (a) cpsr.a = 0; + } else { + if (f) cpsr.f = 1; + if (i) cpsr.i = 1; + if (a) cpsr.a = 1; + } + if (setMode) { + cpsr.mode = mode; + } + } + Cpsr = cpsr; + ''' + cpsIop = InstObjParams("cps", "Cps", "ImmOp", + { "code": cpsCode, + "predicate_test": predicateTest }, []) + header_output += ImmOpDeclare.subst(cpsIop) + decoder_output += ImmOpConstructor.subst(cpsIop) + exec_output += PredOpExecute.subst(cpsIop) }}; |