From: Julia Suvorova <jus...@mail.ru>
This feature is intended to distinguish ARMv8-M variants: Baseline and
Mainline. ARMv7-M compatibility requires the Main Extension. ARMv6-M
compatibility is provided by all ARMv8-M implementations.
Signed-off-by: Julia Suvorova <jus...@mail.ru>
Message-id: 20180622080138.17702-2-jus...@mail.ru
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
target/arm/cpu.h | 1 +
target/arm/cpu.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 8488273c5bd..a4507a2d6f0 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -1482,6 +1482,7 @@ enum arm_features {
ARM_FEATURE_V8_RDM, /* implements v8.1 simd round multiply */
ARM_FEATURE_V8_FP16, /* implements v8.2 half-precision float */
ARM_FEATURE_V8_FCMA, /* has complex number part of v8.3 extensions. */
+ ARM_FEATURE_M_MAIN, /* M profile Main Extension */
};
static inline int arm_feature(CPUARMState *env, int feature)
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 81c1d22b143..2ae4fffafb9 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -1238,6 +1238,7 @@ static void cortex_m3_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
set_feature(&cpu->env, ARM_FEATURE_V7);
set_feature(&cpu->env, ARM_FEATURE_M);
+ set_feature(&cpu->env, ARM_FEATURE_M_MAIN);
cpu->midr = 0x410fc231;
cpu->pmsav7_dregion = 8;
cpu->id_pfr0 = 0x00000030;
@@ -1262,6 +1263,7 @@ static void cortex_m4_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V7);
set_feature(&cpu->env, ARM_FEATURE_M);
+ set_feature(&cpu->env, ARM_FEATURE_M_MAIN);
set_feature(&cpu->env, ARM_FEATURE_THUMB_DSP);
cpu->midr = 0x410fc240; /* r0p0 */
cpu->pmsav7_dregion = 8;
@@ -1287,6 +1289,7 @@ static void cortex_m33_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_V8);
set_feature(&cpu->env, ARM_FEATURE_M);
+ set_feature(&cpu->env, ARM_FEATURE_M_MAIN);
set_feature(&cpu->env, ARM_FEATURE_M_SECURITY);
set_feature(&cpu->env, ARM_FEATURE_THUMB_DSP);
cpu->midr = 0x410fd213; /* r0p3 */
--
2.17.1
