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| author | Peter Maydell <peter.maydell@linaro.org> | 2023-09-15 15:37:00 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2023-09-21 16:07:13 +0100 |
| commit | 3039b090f2058949edf6a7f1c8e793bc309fa6de (patch) | |
| tree | f14ee1a36a3267e5d8c66c0f2b6178a2db861506 /docs/system | |
| parent | 5f7b71fb99dc98831d9ad077fe1a58a4b119e952 (diff) | |
| download | qemu-3039b090f2058949edf6a7f1c8e793bc309fa6de.zip qemu-3039b090f2058949edf6a7f1c8e793bc309fa6de.tar.gz qemu-3039b090f2058949edf6a7f1c8e793bc309fa6de.tar.bz2 | |
target/arm: Implement FEAT_HBC
FEAT_HBC (Hinted conditional branches) provides a new instruction
BC.cond, which behaves exactly like the existing B.cond except
that it provides a hint to the branch predictor about the
likely behaviour of the branch.
Since QEMU does not implement branch prediction, we can treat
this identically to B.cond.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'docs/system')
| -rw-r--r-- | docs/system/arm/emulation.rst | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst index 3df936f..1fb6a2e 100644 --- a/docs/system/arm/emulation.rst +++ b/docs/system/arm/emulation.rst @@ -42,6 +42,7 @@ the following architecture extensions: - FEAT_FlagM2 (Enhancements to flag manipulation instructions) - FEAT_GTG (Guest translation granule size) - FEAT_HAFDBS (Hardware management of the access flag and dirty bit state) +- FEAT_HBC (Hinted conditional branches) - FEAT_HCX (Support for the HCRX_EL2 register) - FEAT_HPDS (Hierarchical permission disables) - FEAT_HPDS2 (Translation table page-based hardware attributes) |