The cpu capabilities passed by the elf loader in AT_HWCAP where
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 <benoit.ca...@gmail.com>
---
linux-user/elfload.c | 31 +++++++++++++++++++++++++++----
1 files changed, 27 insertions(+), 4 deletions(-)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index a413976..5d81ec1 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -375,10 +375,33 @@ 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;
+ hwcaps |= ARM_HWCAP_ARM_FPA;
+
+ /* prove for the extra features */
+#define GET_FEATURE(feat, hwcap) \
+ do {if (arm_feature(e, feat)) { hwcaps |= hwcap; } } while (0)
+ GET_FEATURE(ARM_FEATURE_VFP, ARM_HWCAP_ARM_VFP);
+ GET_FEATURE(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT);
+ GET_FEATURE(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE);
+ GET_FEATURE(ARM_FEATURE_NEON, ARM_HWCAP_ARM_NEON);
+ GET_FEATURE(ARM_FEATURE_VFP3, ARM_HWCAP_ARM_VFPv3);
+ GET_FEATURE(ARM_FEATURE_VFP_FP16, ARM_HWCAP_ARM_VFPv3D16);
+#undef GET_FEATURE
+
+ return hwcaps;
+}
#endif
--
1.7.5.4
