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| author | Ali Saidi <Ali.Saidi@ARM.com> | 2010-06-02 12:58:13 -0500 |
|---|---|---|
| committer | Ali Saidi <Ali.Saidi@ARM.com> | 2010-06-02 12:58:13 -0500 |
| commit | 556ea0ee571a20352856217427ec42e337ea4734 (patch) | |
| tree | 18934f487efbf2872eb9da6d9da1cda1fef3eb8b /src/arch/arm/isa/decoder/arm.isa | |
| parent | 5e6d28996ae80f2bd3afeadbb3454a9d1958e3a2 (diff) | |
| download | gem5-556ea0ee571a20352856217427ec42e337ea4734.tar.xz | |
ARM: Add some support for wfi/wfe/yield/etc
Diffstat (limited to 'src/arch/arm/isa/decoder/arm.isa')
| -rw-r--r-- | src/arch/arm/isa/decoder/arm.isa | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/src/arch/arm/isa/decoder/arm.isa b/src/arch/arm/isa/decoder/arm.isa index 4c5d71ad9..f453d8299 100644 --- a/src/arch/arm/isa/decoder/arm.isa +++ b/src/arch/arm/isa/decoder/arm.isa @@ -86,10 +86,27 @@ format DataOp { 0x9: decode RN { 0: decode IMM { 0: PredImmOp::nop({{ ; }}); - 1: WarnUnimpl::yield(); - 2: WarnUnimpl::wfe(); - 3: WarnUnimpl::wfi(); - 4: WarnUnimpl::sev(); +#if FULL_SYSTEM + 1: PredImmOp::yield({{ ; }}); + 2: PredImmOp::wfe({{ + if (SevMailbox) + SevMailbox = 0; + else + PseudoInst::quiesce(xc->tcBase()); + }}, IsNonSpeculative, IsQuiesce); + 3: PredImmOp::wfi({{ + PseudoInst::quiesce(xc->tcBase()); + }}, IsNonSpeculative, IsQuiesce); + 4: PredImmOp::sev({{ + // Need a way for O3 to not scoreboard these + // accesses as pipeflushs + System *sys = xc->tcBase()->getSystemPtr(); + for (int x = 0; x < sys->numContexts(); x++) { + ThreadContext *oc = sys->getThreadContext(x); + oc->setMiscReg(MISCREG_SEV_MAILBOX, 1); + } + }}); +#endif } default: PredImmOp::msr_i_cpsr({{ uint32_t newCpsr = |