On Wed, Nov 9, 2011 at 6:32 PM, Benoît Canet
<address@hidden> wrote:
The cpu capabilities passed by the elf loader in AT_HWCAP were
a constant.
Make AT_HWCAP reflect the emulated cpu features in order to give
correct clues to eglibc.
Fix : [Bug 887516] [NEW] VFP support reported for the PXA270
Signed-off-by: Benoit Canet <address@hidden>
Reviewed-by: Andreas Färber <address@hidden>
---
linux-user/elfload.c | 46 ++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 42 insertions(+), 4 deletions(-)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index a413976..1c30c23 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -330,6 +330,10 @@ enum
ARM_HWCAP_ARM_NEON = 1 << 11,
ARM_HWCAP_ARM_VFPv3 = 1 << 12,
ARM_HWCAP_ARM_VFPv3D16 = 1 << 13,
+ ARM_HWCAP_ARM_TLS = 1 << 14,
+ ARM_HWCAP_ARM_VFPv4 = 1 << 15,
+ ARM_HWCAP_ARM_IDIVA = 1 << 16,
+ ARM_HWCAP_ARM_IDIVT = 1 << 17,
};
#define TARGET_HAS_GUEST_VALIDATE_BASE
@@ -375,10 +379,44 @@ bool guest_validate_base(unsigned long guest_base)
return 1; /* All good */
}
-#define ELF_HWCAP (ARM_HWCAP_ARM_SWP | ARM_HWCAP_ARM_HALF \
- | ARM_HWCAP_ARM_THUMB | ARM_HWCAP_ARM_FAST_MULT \
- | ARM_HWCAP_ARM_FPA | ARM_HWCAP_ARM_VFP \
- | ARM_HWCAP_ARM_NEON | ARM_HWCAP_ARM_VFPv3 )
+
+#define ELF_HWCAP get_elf_hwcap()
+
+static uint32_t get_elf_hwcap(void)
+{
+ CPUState *e = thread_env;
+ uint32_t hwcaps = 0;
+
+ hwcaps |= ARM_HWCAP_ARM_SWP;
+ hwcaps |= ARM_HWCAP_ARM_HALF;
+ hwcaps |= ARM_HWCAP_ARM_THUMB;
+ hwcaps |= ARM_HWCAP_ARM_FAST_MULT;
+
+ /* probe for the extra features */
+#define SET_HWCAP(feat, hwcap) do { \
+ if (arm_feature(e, feat)) { \
+ hwcaps |= hwcap; \
+ } \
+ } while (0)
+ SET_HWCAP(ARM_FEATURE_VFP, ARM_HWCAP_ARM_VFP);
+ SET_HWCAP(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT);
+ SET_HWCAP(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE);
+ SET_HWCAP(ARM_FEATURE_NEON, ARM_HWCAP_ARM_NEON);
+ SET_HWCAP(ARM_FEATURE_VFP3, ARM_HWCAP_ARM_VFPv3);
+
+ /* Strictly should be ARM_FEATURE_V5TE but we don't distinguish
+ * as all our v5 cores are v5TE at the moment
+ */
+ SET_HWCAP(ARM_FEATURE_V5, ARM_HWCAP_ARM_EDSP);
+
+ SET_HWCAP(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS);
+ SET_HWCAP(ARM_FEATURE_VFP4, ARM_HWCAP_ARM_VFPv4);
+ SET_HWCAP(ARM_FEATURE_ARM_DIV, ARM_HWCAP_ARM_IDIVA);
+ SET_HWCAP(ARM_FEATURE_THUMB_DIV, ARM_HWCAP_ARM_IDIVT);
+#undef SET_HWCAP
+
+ return hwcaps;
+}
#endif
--
1.7.5.4