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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * arch/arm/include/asm/vfpmacros.h
- *
- * Assembler-only file containing VFP macros and register definitions.
- */
- #include <asm/hwcap.h>
- #include <asm/vfp.h>
- #ifdef CONFIG_AS_VFP_VMRS_FPINST
- .macro VFPFMRX, rd, sysreg, cond
- vmrs\cond \rd, \sysreg
- .endm
- .macro VFPFMXR, sysreg, rd, cond
- vmsr\cond \sysreg, \rd
- .endm
- #else
- @ 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
- #endif
- @ read all the working registers back into the VFP
- .macro VFPFLDMIA, base, tmp
- .fpu vfpv2
- #if __LINUX_ARM_ARCH__ < 6
- fldmiax \base!, {d0-d15}
- #else
- vldmia \base!, {d0-d15}
- #endif
- #ifdef CONFIG_VFPv3
- .fpu vfpv3
- #if __LINUX_ARM_ARCH__ <= 6
- ldr \tmp, =elf_hwcap @ may not have MVFR regs
- ldr \tmp, [\tmp, #0]
- tst \tmp, #HWCAP_VFPD32
- vldmiane \base!, {d16-d31}
- addeq \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?
- vldmiaeq \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
- fstmiax \base!, {d0-d15}
- #else
- vstmia \base!, {d0-d15}
- #endif
- #ifdef CONFIG_VFPv3
- .fpu vfpv3
- #if __LINUX_ARM_ARCH__ <= 6
- ldr \tmp, =elf_hwcap @ may not have MVFR regs
- ldr \tmp, [\tmp, #0]
- tst \tmp, #HWCAP_VFPD32
- vstmiane \base!, {d16-d31}
- addeq \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?
- vstmiaeq \base!, {d16-d31}
- addne \base, \base, #32*4 @ step over unused register space
- #endif
- #endif
- .endm
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