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[68/76] target/arm: Enable FEAT_AFP for '-cpu max'

Message ID 20250124162836.2332150-69-peter.maydell@linaro.org
State New
Headers show
Series target/arm: Implement FEAT_AFP and FEAT_RPRES | expand

Commit Message

Peter Maydell Jan. 24, 2025, 4:28 p.m. UTC 
Now that we have completed the handling for FPCR.{AH,FIZ,NEP}, we
can enable FEAT_AFP for '-cpu max', and document that we support it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 docs/system/arm/emulation.rst | 1 +
 target/arm/tcg/cpu64.c        | 1 +
 2 files changed, 2 insertions(+)
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Patch

diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst
index 60176d08597..63b4cdf5fb1 100644
--- a/docs/system/arm/emulation.rst
+++ b/docs/system/arm/emulation.rst
@@ -20,6 +20,7 @@  the following architecture extensions:
 - FEAT_AA64EL3 (Support for AArch64 at EL3)
 - FEAT_AdvSIMD (Advanced SIMD Extension)
 - FEAT_AES (AESD and AESE instructions)
+- FEAT_AFP (Alternate floating-point behavior)
 - FEAT_Armv9_Crypto (Armv9 Cryptographic Extension)
 - FEAT_ASID16 (16 bit ASID)
 - FEAT_BBM at level 2 (Translation table break-before-make levels)
diff --git a/target/arm/tcg/cpu64.c b/target/arm/tcg/cpu64.c
index 93573ceeb1a..0bc68aac177 100644
--- a/target/arm/tcg/cpu64.c
+++ b/target/arm/tcg/cpu64.c
@@ -1218,6 +1218,7 @@  void aarch64_max_tcg_initfn(Object *obj)
     t = FIELD_DP64(t, ID_AA64MMFR1, XNX, 1);      /* FEAT_XNX */
     t = FIELD_DP64(t, ID_AA64MMFR1, ETS, 2);      /* FEAT_ETS2 */
     t = FIELD_DP64(t, ID_AA64MMFR1, HCX, 1);      /* FEAT_HCX */
+    t = FIELD_DP64(t, ID_AA64MMFR1, AFP, 1);      /* FEAT_AFP */
     t = FIELD_DP64(t, ID_AA64MMFR1, TIDCP1, 1);   /* FEAT_TIDCP1 */
     t = FIELD_DP64(t, ID_AA64MMFR1, CMOW, 1);     /* FEAT_CMOW */
     cpu->isar.id_aa64mmfr1 = t;