diff options
author | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 06:10:25 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-12-04 12:17:19 -0500 |
commit | 478b8fecda511942404ac232897a718cecd13e48 (patch) | |
tree | e022fce8ca92f93a000e1cd686255f0b126e9fd5 /arch/sparc/lib/VISsave.S | |
parent | 18269c0fd4db9bec2668f895f21d742486ccb90f (diff) |
sparc,sparc64: unify lib/
o Renamed files in sparc64 to <name>_64.S when identical
to sparc32 files.
o iomap.c were equal for sparc32 and sparc64
o adjusted sparc/Makefile now we have only one lib/
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/lib/VISsave.S')
-rw-r--r-- | arch/sparc/lib/VISsave.S | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/arch/sparc/lib/VISsave.S b/arch/sparc/lib/VISsave.S new file mode 100644 index 000000000000..b320ae9e2e2e --- /dev/null +++ b/arch/sparc/lib/VISsave.S | |||
@@ -0,0 +1,144 @@ | |||
1 | /* | ||
2 | * VISsave.S: Code for saving FPU register state for | ||
3 | * VIS routines. One should not call this directly, | ||
4 | * but use macros provided in <asm/visasm.h>. | ||
5 | * | ||
6 | * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz) | ||
7 | */ | ||
8 | |||
9 | #include <asm/asi.h> | ||
10 | #include <asm/page.h> | ||
11 | #include <asm/ptrace.h> | ||
12 | #include <asm/visasm.h> | ||
13 | #include <asm/thread_info.h> | ||
14 | |||
15 | .text | ||
16 | .globl VISenter, VISenterhalf | ||
17 | |||
18 | /* On entry: %o5=current FPRS value, %g7 is callers address */ | ||
19 | /* May clobber %o5, %g1, %g2, %g3, %g7, %icc, %xcc */ | ||
20 | |||
21 | /* Nothing special need be done here to handle pre-emption, this | ||
22 | * FPU save/restore mechanism is already preemption safe. | ||
23 | */ | ||
24 | |||
25 | .align 32 | ||
26 | VISenter: | ||
27 | ldub [%g6 + TI_FPDEPTH], %g1 | ||
28 | brnz,a,pn %g1, 1f | ||
29 | cmp %g1, 1 | ||
30 | stb %g0, [%g6 + TI_FPSAVED] | ||
31 | stx %fsr, [%g6 + TI_XFSR] | ||
32 | 9: jmpl %g7 + %g0, %g0 | ||
33 | nop | ||
34 | 1: bne,pn %icc, 2f | ||
35 | |||
36 | srl %g1, 1, %g1 | ||
37 | vis1: ldub [%g6 + TI_FPSAVED], %g3 | ||
38 | stx %fsr, [%g6 + TI_XFSR] | ||
39 | or %g3, %o5, %g3 | ||
40 | stb %g3, [%g6 + TI_FPSAVED] | ||
41 | rd %gsr, %g3 | ||
42 | clr %g1 | ||
43 | ba,pt %xcc, 3f | ||
44 | |||
45 | stx %g3, [%g6 + TI_GSR] | ||
46 | 2: add %g6, %g1, %g3 | ||
47 | cmp %o5, FPRS_DU | ||
48 | be,pn %icc, 6f | ||
49 | sll %g1, 3, %g1 | ||
50 | stb %o5, [%g3 + TI_FPSAVED] | ||
51 | rd %gsr, %g2 | ||
52 | add %g6, %g1, %g3 | ||
53 | stx %g2, [%g3 + TI_GSR] | ||
54 | |||
55 | add %g6, %g1, %g2 | ||
56 | stx %fsr, [%g2 + TI_XFSR] | ||
57 | sll %g1, 5, %g1 | ||
58 | 3: andcc %o5, FPRS_DL|FPRS_DU, %g0 | ||
59 | be,pn %icc, 9b | ||
60 | add %g6, TI_FPREGS, %g2 | ||
61 | andcc %o5, FPRS_DL, %g0 | ||
62 | |||
63 | be,pn %icc, 4f | ||
64 | add %g6, TI_FPREGS+0x40, %g3 | ||
65 | membar #Sync | ||
66 | stda %f0, [%g2 + %g1] ASI_BLK_P | ||
67 | stda %f16, [%g3 + %g1] ASI_BLK_P | ||
68 | membar #Sync | ||
69 | andcc %o5, FPRS_DU, %g0 | ||
70 | be,pn %icc, 5f | ||
71 | 4: add %g1, 128, %g1 | ||
72 | membar #Sync | ||
73 | stda %f32, [%g2 + %g1] ASI_BLK_P | ||
74 | |||
75 | stda %f48, [%g3 + %g1] ASI_BLK_P | ||
76 | 5: membar #Sync | ||
77 | ba,pt %xcc, 80f | ||
78 | nop | ||
79 | |||
80 | .align 32 | ||
81 | 80: jmpl %g7 + %g0, %g0 | ||
82 | nop | ||
83 | |||
84 | 6: ldub [%g3 + TI_FPSAVED], %o5 | ||
85 | or %o5, FPRS_DU, %o5 | ||
86 | add %g6, TI_FPREGS+0x80, %g2 | ||
87 | stb %o5, [%g3 + TI_FPSAVED] | ||
88 | |||
89 | sll %g1, 5, %g1 | ||
90 | add %g6, TI_FPREGS+0xc0, %g3 | ||
91 | wr %g0, FPRS_FEF, %fprs | ||
92 | membar #Sync | ||
93 | stda %f32, [%g2 + %g1] ASI_BLK_P | ||
94 | stda %f48, [%g3 + %g1] ASI_BLK_P | ||
95 | membar #Sync | ||
96 | ba,pt %xcc, 80f | ||
97 | nop | ||
98 | |||
99 | .align 32 | ||
100 | 80: jmpl %g7 + %g0, %g0 | ||
101 | nop | ||
102 | |||
103 | .align 32 | ||
104 | VISenterhalf: | ||
105 | ldub [%g6 + TI_FPDEPTH], %g1 | ||
106 | brnz,a,pn %g1, 1f | ||
107 | cmp %g1, 1 | ||
108 | stb %g0, [%g6 + TI_FPSAVED] | ||
109 | stx %fsr, [%g6 + TI_XFSR] | ||
110 | clr %o5 | ||
111 | jmpl %g7 + %g0, %g0 | ||
112 | wr %g0, FPRS_FEF, %fprs | ||
113 | |||
114 | 1: bne,pn %icc, 2f | ||
115 | srl %g1, 1, %g1 | ||
116 | ba,pt %xcc, vis1 | ||
117 | sub %g7, 8, %g7 | ||
118 | 2: addcc %g6, %g1, %g3 | ||
119 | sll %g1, 3, %g1 | ||
120 | andn %o5, FPRS_DU, %g2 | ||
121 | stb %g2, [%g3 + TI_FPSAVED] | ||
122 | |||
123 | rd %gsr, %g2 | ||
124 | add %g6, %g1, %g3 | ||
125 | stx %g2, [%g3 + TI_GSR] | ||
126 | add %g6, %g1, %g2 | ||
127 | stx %fsr, [%g2 + TI_XFSR] | ||
128 | sll %g1, 5, %g1 | ||
129 | 3: andcc %o5, FPRS_DL, %g0 | ||
130 | be,pn %icc, 4f | ||
131 | add %g6, TI_FPREGS, %g2 | ||
132 | |||
133 | add %g6, TI_FPREGS+0x40, %g3 | ||
134 | membar #Sync | ||
135 | stda %f0, [%g2 + %g1] ASI_BLK_P | ||
136 | stda %f16, [%g3 + %g1] ASI_BLK_P | ||
137 | membar #Sync | ||
138 | ba,pt %xcc, 4f | ||
139 | nop | ||
140 | |||
141 | .align 32 | ||
142 | 4: and %o5, FPRS_DU, %o5 | ||
143 | jmpl %g7 + %g0, %g0 | ||
144 | wr %o5, FPRS_FEF, %fprs | ||