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[Qemu-devel] [PATCH 15/17] arm-linux-user: fix elfload.c's AT_HWCAP to r
From: |
riku . voipio |
Subject: |
[Qemu-devel] [PATCH 15/17] arm-linux-user: fix elfload.c's AT_HWCAP to reflect cpu features. |
Date: |
Fri, 6 Apr 2012 19:35:15 +0300 |
From: Benoit Canet <address@hidden>
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.
Riku Voipio: fixed to apply to current head
Fix : [Bug 887516] [NEW] VFP support reported for the PXA270
Signed-off-by: Benoit Canet <address@hidden>
Signed-off-by: Riku Voipio <address@hidden>
---
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 e502b39..4ce9743 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)
+{
+ CPUARMState *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;
+
+ /* probe 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
- [Qemu-devel] [PATCH 00/17] linux-user: pending patches, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 09/17] linux-user: take RESERVED_VA into account for g2h_valid(), riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 06/17] linux-user: add BLKSSZGET ioctl wrapper, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 14/17] linux-user/arm/syscall_nr.h: Add syscall number for ppoll, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 10/17] linux-user: resolve reserved_va vma downwards, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 16/17] elf.h: Update EF_ARM_ constants to newer ABI versions, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 12/17] linux-user/syscall.c: Fix indentation in prctl handling, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 03/17] linux-user: implement device mapper ioctls, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 15/17] arm-linux-user: fix elfload.c's AT_HWCAP to reflect cpu features.,
riku . voipio <=
- [Qemu-devel] [PATCH 13/17] linux-user: Add support for prctl PR_GET_NAME and PR_SET_NAME, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 08/17] linux-user: fix fallocate, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 02/17] linux-user: target_argv is placed on ts->bprm->argv and can't be freed(), riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 05/17] linux-user: fix BLK ioctl arguments, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 01/17] linux-user: improve fake /proc/self/stat making `ps` not segfault., riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 04/17] linux-user: add struct old_dev_t compat, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 11/17] linux-user: reserve 4GB of vmem for 32-on-64, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 17/17] Userspace ARM BE8 support, riku . voipio, 2012/04/06
- [Qemu-devel] [PATCH 07/17] linux-user: Add ioctl for BLKBSZGET, riku . voipio, 2012/04/06