Merge branch 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[sfrench/cifs-2.6.git] / arch / arm / include / asm / vfpmacros.h

diff --git a/arch/arm/include/asm/vfpmacros.h b/arch/arm/include/asm/vfpmacros.h
index 422f3cc204a27310f99d9b25adebb9f49d16e3d0..3d5fc41ae8d38a7743b3bee9c55490135c19dcea 100644 (file)
--- a/arch/arm/include/asm/vfpmacros.h
+++ b/arch/arm/include/asm/vfpmacros.h
@@ -3,6 +3,8 @@
  *
  * Assembler-only file containing VFP macros and register definitions.
  */
+#include <asm/hwcap.h>
+
 #include "vfp.h"
 
 @ Macros to allow building with old toolkits (with no VFP support)
@@ -22,11 +24,19 @@
        LDC     p11, cr0, [\base],#32*4             @ FLDMIAD \base!, {d0-d15}
 #endif
 #ifdef CONFIG_VFPv3
+#if __LINUX_ARM_ARCH__ <= 6
+       ldr     \tmp, =elf_hwcap                    @ may not have MVFR regs
+       ldr     \tmp, [\tmp, #0]
+       tst     \tmp, #HWCAP_VFPv3D16
+       ldceq   p11, cr0, [\base],#32*4             @ FLDMIAD \base!, {d16-d31}
+       addne   \base, \base, #32*4                 @ step over unused register space
+#else
        VFPFMRX \tmp, MVFR0                         @ Media and VFP Feature Register 0
        and     \tmp, \tmp, #MVFR0_A_SIMD_MASK      @ A_SIMD field
        cmp     \tmp, #2                            @ 32 x 64bit registers?
        ldceql  p11, cr0, [\base],#32*4             @ FLDMIAD \base!, {d16-d31}
        addne   \base, \base, #32*4                 @ step over unused register space
+#endif
 #endif
        .endm
 
@@ -38,10 +48,18 @@
        STC     p11, cr0, [\base],#32*4             @ FSTMIAD \base!, {d0-d15}
 #endif
 #ifdef CONFIG_VFPv3
+#if __LINUX_ARM_ARCH__ <= 6
+       ldr     \tmp, =elf_hwcap                    @ may not have MVFR regs
+       ldr     \tmp, [\tmp, #0]
+       tst     \tmp, #HWCAP_VFPv3D16
+       stceq   p11, cr0, [\base],#32*4             @ FSTMIAD \base!, {d16-d31}
+       addne   \base, \base, #32*4                 @ step over unused register space
+#else
        VFPFMRX \tmp, MVFR0                         @ Media and VFP Feature Register 0
        and     \tmp, \tmp, #MVFR0_A_SIMD_MASK      @ A_SIMD field
        cmp     \tmp, #2                            @ 32 x 64bit registers?
        stceql  p11, cr0, [\base],#32*4             @ FSTMIAD \base!, {d16-d31}
        addne   \base, \base, #32*4                 @ step over unused register space
+#endif
 #endif
        .endm