diff options
Diffstat (limited to 'arch/arm/include/asm/vfpmacros.h')
| -rw-r--r-- | arch/arm/include/asm/vfpmacros.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/include/asm/vfpmacros.h b/arch/arm/include/asm/vfpmacros.h index 422f3cc204a..3d5fc41ae8d 100644 --- 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) @@ -22,12 +24,20 @@ 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 @ write all the working registers out of the VFP @@ -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 |