1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 /*
3 * arch/arm/include/asm/vfpmacros.h
4 *
5 * Assembler-only file containing VFP macros a
6 */
7 #include <asm/hwcap.h>
8
9 #include <asm/vfp.h>
10
11 #ifdef CONFIG_AS_VFP_VMRS_FPINST
12 .macro VFPFMRX, rd, sysreg, cond
13 vmrs\cond \rd, \sysreg
14 .endm
15
16 .macro VFPFMXR, sysreg, rd, cond
17 vmsr\cond \sysreg, \rd
18 .endm
19 #else
20 @ Macros to allow building with old to
21 .macro VFPFMRX, rd, sysreg, cond
22 MRC\cond p10, 7, \rd, \sysreg,
23 .endm
24
25 .macro VFPFMXR, sysreg, rd, cond
26 MCR\cond p10, 7, \rd, \sysreg,
27 .endm
28 #endif
29
30 @ read all the working registers back
31 .macro VFPFLDMIA, base, tmp
32 .fpu vfpv2
33 #if __LINUX_ARM_ARCH__ < 6
34 fldmiax \base!, {d0-d15}
35 #else
36 vldmia \base!, {d0-d15}
37 #endif
38 #ifdef CONFIG_VFPv3
39 .fpu vfpv3
40 #if __LINUX_ARM_ARCH__ <= 6
41 ldr \tmp, =elf_hwcap
42 ldr \tmp, [\tmp, #0]
43 tst \tmp, #HWCAP_VFPD32
44 vldmiane \base!, {d16-d31}
45 addeq \base, \base, #32*4
46 #else
47 VFPFMRX \tmp, MVFR0
48 and \tmp, \tmp, #MVFR0_A_SIMD_MASK
49 cmp \tmp, #2
50 vldmiaeq \base!, {d16-d31}
51 addne \base, \base, #32*4
52 #endif
53 #endif
54 .endm
55
56 @ write all the working registers out
57 .macro VFPFSTMIA, base, tmp
58 #if __LINUX_ARM_ARCH__ < 6
59 fstmiax \base!, {d0-d15}
60 #else
61 vstmia \base!, {d0-d15}
62 #endif
63 #ifdef CONFIG_VFPv3
64 .fpu vfpv3
65 #if __LINUX_ARM_ARCH__ <= 6
66 ldr \tmp, =elf_hwcap
67 ldr \tmp, [\tmp, #0]
68 tst \tmp, #HWCAP_VFPD32
69 vstmiane \base!, {d16-d31}
70 addeq \base, \base, #32*4
71 #else
72 VFPFMRX \tmp, MVFR0
73 and \tmp, \tmp, #MVFR0_A_SIMD_MASK
74 cmp \tmp, #2
75 vstmiaeq \base!, {d16-d31}
76 addne \base, \base, #32*4
77 #endif
78 #endif
79 .endm
80
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.