| /* |
| * arch/arm/include/asm/vfpmacros.h |
| * |
| * Assembler-only file containing VFP macros and register definitions. |
| */ |
| #include <asm/hwcap.h> |
| |
| #include <asm/vfp.h> |
| |
| @ Macros to allow building with old toolkits (with no VFP support) |
| .macro VFPFMRX, rd, sysreg, cond |
| MRC\cond p10, 7, \rd, \sysreg, cr0, 0 @ FMRX \rd, \sysreg |
| .endm |
| |
| .macro VFPFMXR, sysreg, rd, cond |
| MCR\cond p10, 7, \rd, \sysreg, cr0, 0 @ FMXR \sysreg, \rd |
| .endm |
| |
| @ read all the working registers back into the VFP |
| .macro VFPFLDMIA, base, tmp |
| #if __LINUX_ARM_ARCH__ < 6 |
| LDC p11, cr0, [\base],#33*4 @ FLDMIAX \base!, {d0-d15} |
| #else |
| 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 |
| .macro VFPFSTMIA, base, tmp |
| #if __LINUX_ARM_ARCH__ < 6 |
| STC p11, cr0, [\base],#33*4 @ FSTMIAX \base!, {d0-d15} |
| #else |
| 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 |