From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/arm/include/asm/vfpmacros.h | 65 +++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 kernel/arch/arm/include/asm/vfpmacros.h (limited to 'kernel/arch/arm/include/asm/vfpmacros.h') diff --git a/kernel/arch/arm/include/asm/vfpmacros.h b/kernel/arch/arm/include/asm/vfpmacros.h new file mode 100644 index 000000000..301c1db3e --- /dev/null +++ b/kernel/arch/arm/include/asm/vfpmacros.h @@ -0,0 +1,65 @@ +/* + * arch/arm/include/asm/vfpmacros.h + * + * Assembler-only file containing VFP macros and register definitions. + */ +#include + +#include + +@ 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_VFPD32 + ldcnel p11, cr0, [\base],#32*4 @ FLDMIAD \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? + 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_VFPD32 + stcnel p11, cr0, [\base],#32*4 @ FSTMIAD \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? + stceql p11, cr0, [\base],#32*4 @ FSTMIAD \base!, {d16-d31} + addne \base, \base, #32*4 @ step over unused register space +#endif +#endif + .endm -- cgit 1.2.3-korg