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[RFC,for,2.11,09/23] arm: introduce ARM_V8_FP16 feature bit

Message ID 20170720150426.12393-10-alex.bennee@linaro.org
State New
Headers show
Series Implementing FP16 for ARMv8.2 using SoftFloat2a and 3c | expand

Commit Message

Alex Bennée July 20, 2017, 3:04 p.m. UTC 
---
 target/arm/cpu.h   | 1 +
 target/arm/cpu64.c | 1 +
 2 files changed, 2 insertions(+)

-- 
2.13.0
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Patch

diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 1f565fd503..adf2524fe0 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -1230,6 +1230,7 @@  enum arm_features {
     ARM_FEATURE_THUMB_DSP, /* DSP insns supported in the Thumb encodings */
     ARM_FEATURE_PMU, /* has PMU support */
     ARM_FEATURE_VBAR, /* has cp15 VBAR */
+    ARM_FEATURE_V8_FP16, /* implements v8.2 half-precision float */
 };
 
 static inline int arm_feature(CPUARMState *env, int feature)
diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 670c07ab6e..973614dfc6 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -226,6 +226,7 @@  static void aarch64_any_initfn(Object *obj)
     set_feature(&cpu->env, ARM_FEATURE_V8_SHA256);
     set_feature(&cpu->env, ARM_FEATURE_V8_PMULL);
     set_feature(&cpu->env, ARM_FEATURE_CRC);
+    set_feature(&cpu->env, ARM_FEATURE_V8_FP16);
     cpu->ctr = 0x80038003; /* 32 byte I and D cacheline size, VIPT icache */
     cpu->dcz_blocksize = 7; /*  512 bytes */
 }