1 /*
2 * arch/arm/include/asm/vfpmacros.h
3 *
4 * Assembler-only file containing VFP macros and register definitions.
5 */
6 #include "vfp.h"
7
toolkits(with no VFP support)8 @ Macros to allow building with old toolkits (with no VFP support)
9 .macro VFPFMRX, rd, sysreg, cond
10 MRC\cond p10, 7, \rd, \sysreg, cr0, 0 @ FMRX \rd, \sysreg
11 .endm
12
13 .macro VFPFMXR, sysreg, rd, cond
14 MCR\cond p10, 7, \rd, \sysreg, cr0, 0 @ FMXR \sysreg, \rd
15 .endm
16
17 @ read all the working registers back into the VFP
18 .macro VFPFLDMIA, base, tmp
19 #if __LINUX_ARM_ARCH__ < 6
20 LDC p11, cr0, [\base],#33*4 @ FLDMIAX \base!, {d0-d15}
21 #else
22 LDC p11, cr0, [\base],#32*4 @ FLDMIAD \base!, {d0-d15}
23 #endif
24 #ifdef CONFIG_VFPv3
25 VFPFMRX \tmp, MVFR0 @ Media and VFP Feature Register 0
26 and \tmp, \tmp, #MVFR0_A_SIMD_MASK @ A_SIMD field
27 cmp \tmp, #2 @ 32 x 64bit registers?
28 ldceql p11, cr0, [\base],#32*4 @ FLDMIAD \base!, {d16-d31}
29 addne \base, \base, #32*4 @ step over unused register space
30 #endif
31 .endm
32
33 @ write all the working registers out of the VFP
34 .macro VFPFSTMIA, base, tmp
35 #if __LINUX_ARM_ARCH__ < 6
36 STC p11, cr0, [\base],#33*4 @ FSTMIAX \base!, {d0-d15}
37 #else
38 STC p11, cr0, [\base],#32*4 @ FSTMIAD \base!, {d0-d15}
39 #endif
40 #ifdef CONFIG_VFPv3
41 VFPFMRX \tmp, MVFR0 @ Media and VFP Feature Register 0
42 and \tmp, \tmp, #MVFR0_A_SIMD_MASK @ A_SIMD field
43 cmp \tmp, #2 @ 32 x 64bit registers?
44 stceql p11, cr0, [\base],#32*4 @ FSTMIAD \base!, {d16-d31}
45 addne \base, \base, #32*4 @ step over unused register space
46 #endif
47 .endm
48