usb: dwc3: support for pinctrl state change during system sleep
[linux/fpc-iii.git] / arch / mips / kvm / fpu.S
blob531fbf5131c02b1771b1d52f4006e1082deb15e1
1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License.  See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * FPU context handling code for KVM.
7  *
8  * Copyright (C) 2015 Imagination Technologies Ltd.
9  */
11 #include <asm/asm.h>
12 #include <asm/asm-offsets.h>
13 #include <asm/fpregdef.h>
14 #include <asm/mipsregs.h>
15 #include <asm/regdef.h>
17         .set    noreorder
18         .set    noat
20 LEAF(__kvm_save_fpu)
21         .set    push
22         .set    mips64r2
23         SET_HARDFLOAT
24         mfc0    t0, CP0_STATUS
25         sll     t0, t0, 5                       # is Status.FR set?
26         bgez    t0, 1f                          # no: skip odd doubles
27          nop
28         sdc1    $f1,  VCPU_FPR1(a0)
29         sdc1    $f3,  VCPU_FPR3(a0)
30         sdc1    $f5,  VCPU_FPR5(a0)
31         sdc1    $f7,  VCPU_FPR7(a0)
32         sdc1    $f9,  VCPU_FPR9(a0)
33         sdc1    $f11, VCPU_FPR11(a0)
34         sdc1    $f13, VCPU_FPR13(a0)
35         sdc1    $f15, VCPU_FPR15(a0)
36         sdc1    $f17, VCPU_FPR17(a0)
37         sdc1    $f19, VCPU_FPR19(a0)
38         sdc1    $f21, VCPU_FPR21(a0)
39         sdc1    $f23, VCPU_FPR23(a0)
40         sdc1    $f25, VCPU_FPR25(a0)
41         sdc1    $f27, VCPU_FPR27(a0)
42         sdc1    $f29, VCPU_FPR29(a0)
43         sdc1    $f31, VCPU_FPR31(a0)
44 1:      sdc1    $f0,  VCPU_FPR0(a0)
45         sdc1    $f2,  VCPU_FPR2(a0)
46         sdc1    $f4,  VCPU_FPR4(a0)
47         sdc1    $f6,  VCPU_FPR6(a0)
48         sdc1    $f8,  VCPU_FPR8(a0)
49         sdc1    $f10, VCPU_FPR10(a0)
50         sdc1    $f12, VCPU_FPR12(a0)
51         sdc1    $f14, VCPU_FPR14(a0)
52         sdc1    $f16, VCPU_FPR16(a0)
53         sdc1    $f18, VCPU_FPR18(a0)
54         sdc1    $f20, VCPU_FPR20(a0)
55         sdc1    $f22, VCPU_FPR22(a0)
56         sdc1    $f24, VCPU_FPR24(a0)
57         sdc1    $f26, VCPU_FPR26(a0)
58         sdc1    $f28, VCPU_FPR28(a0)
59         jr      ra
60          sdc1   $f30, VCPU_FPR30(a0)
61         .set    pop
62         END(__kvm_save_fpu)
64 LEAF(__kvm_restore_fpu)
65         .set    push
66         .set    mips64r2
67         SET_HARDFLOAT
68         mfc0    t0, CP0_STATUS
69         sll     t0, t0, 5                       # is Status.FR set?
70         bgez    t0, 1f                          # no: skip odd doubles
71          nop
72         ldc1    $f1,  VCPU_FPR1(a0)
73         ldc1    $f3,  VCPU_FPR3(a0)
74         ldc1    $f5,  VCPU_FPR5(a0)
75         ldc1    $f7,  VCPU_FPR7(a0)
76         ldc1    $f9,  VCPU_FPR9(a0)
77         ldc1    $f11, VCPU_FPR11(a0)
78         ldc1    $f13, VCPU_FPR13(a0)
79         ldc1    $f15, VCPU_FPR15(a0)
80         ldc1    $f17, VCPU_FPR17(a0)
81         ldc1    $f19, VCPU_FPR19(a0)
82         ldc1    $f21, VCPU_FPR21(a0)
83         ldc1    $f23, VCPU_FPR23(a0)
84         ldc1    $f25, VCPU_FPR25(a0)
85         ldc1    $f27, VCPU_FPR27(a0)
86         ldc1    $f29, VCPU_FPR29(a0)
87         ldc1    $f31, VCPU_FPR31(a0)
88 1:      ldc1    $f0,  VCPU_FPR0(a0)
89         ldc1    $f2,  VCPU_FPR2(a0)
90         ldc1    $f4,  VCPU_FPR4(a0)
91         ldc1    $f6,  VCPU_FPR6(a0)
92         ldc1    $f8,  VCPU_FPR8(a0)
93         ldc1    $f10, VCPU_FPR10(a0)
94         ldc1    $f12, VCPU_FPR12(a0)
95         ldc1    $f14, VCPU_FPR14(a0)
96         ldc1    $f16, VCPU_FPR16(a0)
97         ldc1    $f18, VCPU_FPR18(a0)
98         ldc1    $f20, VCPU_FPR20(a0)
99         ldc1    $f22, VCPU_FPR22(a0)
100         ldc1    $f24, VCPU_FPR24(a0)
101         ldc1    $f26, VCPU_FPR26(a0)
102         ldc1    $f28, VCPU_FPR28(a0)
103         jr      ra
104          ldc1   $f30, VCPU_FPR30(a0)
105         .set    pop
106         END(__kvm_restore_fpu)
108 LEAF(__kvm_restore_fcsr)
109         .set    push
110         SET_HARDFLOAT
111         lw      t0, VCPU_FCR31(a0)
112         /*
113          * The ctc1 must stay at this offset in __kvm_restore_fcsr.
114          * See kvm_mips_csr_die_notify() which handles t0 containing a value
115          * which triggers an FP Exception, which must be stepped over and
116          * ignored since the set cause bits must remain there for the guest.
117          */
118         ctc1    t0, fcr31
119         jr      ra
120          nop
121         .set    pop
122         END(__kvm_restore_fcsr)