1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/* $Id: winmacro.h,v 1.20 1998/03/09 14:04:54 jj Exp $
* winmacro.h: Window loading-unloading macros.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*/
#ifndef _SPARC_WINMACRO_H
#define _SPARC_WINMACRO_H
#include <asm/ptrace.h>
#include <asm/psr.h>
/* These are just handy. */
#define _SV save %sp, -REGWIN_SZ, %sp
#define _RS restore
#define FLUSH_ALL_KERNEL_WINDOWS \
_SV; _SV; _SV; _SV; _SV; _SV; _SV; \
_RS; _RS; _RS; _RS; _RS; _RS; _RS;
/* Store the register window onto the 8-byte aligned area starting
* at %reg. It might be %sp, it might not, we don't care.
*/
#define STORE_WINDOW(reg) \
std %l0, [%reg + RW_L0]; \
std %l2, [%reg + RW_L2]; \
std %l4, [%reg + RW_L4]; \
std %l6, [%reg + RW_L6]; \
std %i0, [%reg + RW_I0]; \
std %i2, [%reg + RW_I2]; \
std %i4, [%reg + RW_I4]; \
std %i6, [%reg + RW_I6];
/* Load a register window from the area beginning at %reg. */
#define LOAD_WINDOW(reg) \
ldd [%reg + RW_L0], %l0; \
ldd [%reg + RW_L2], %l2; \
ldd [%reg + RW_L4], %l4; \
ldd [%reg + RW_L6], %l6; \
ldd [%reg + RW_I0], %i0; \
ldd [%reg + RW_I2], %i2; \
ldd [%reg + RW_I4], %i4; \
ldd [%reg + RW_I6], %i6;
/* Loading and storing struct pt_reg trap frames. */
#define LOAD_PT_INS(base_reg) \
ldd [%base_reg + REGWIN_SZ + PT_I0], %i0; \
ldd [%base_reg + REGWIN_SZ + PT_I2], %i2; \
ldd [%base_reg + REGWIN_SZ + PT_I4], %i4; \
ldd [%base_reg + REGWIN_SZ + PT_I6], %i6;
#define LOAD_PT_GLOBALS(base_reg) \
ld [%base_reg + REGWIN_SZ + PT_G1], %g1; \
ldd [%base_reg + REGWIN_SZ + PT_G2], %g2; \
ldd [%base_reg + REGWIN_SZ + PT_G4], %g4; \
ldd [%base_reg + REGWIN_SZ + PT_G6], %g6;
#define LOAD_PT_YREG(base_reg, scratch) \
ld [%base_reg + REGWIN_SZ + PT_Y], %scratch; \
wr %scratch, 0x0, %y;
#define LOAD_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc) \
ld [%base_reg + REGWIN_SZ + PT_PSR], %pt_psr; \
ld [%base_reg + REGWIN_SZ + PT_PC], %pt_pc; \
ld [%base_reg + REGWIN_SZ + PT_NPC], %pt_npc;
#define LOAD_PT_ALL(base_reg, pt_psr, pt_pc, pt_npc, scratch) \
LOAD_PT_YREG(base_reg, scratch) \
LOAD_PT_INS(base_reg) \
LOAD_PT_GLOBALS(base_reg) \
LOAD_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc)
#define STORE_PT_INS(base_reg) \
std %i0, [%base_reg + REGWIN_SZ + PT_I0]; \
std %i2, [%base_reg + REGWIN_SZ + PT_I2]; \
std %i4, [%base_reg + REGWIN_SZ + PT_I4]; \
std %i6, [%base_reg + REGWIN_SZ + PT_I6];
#define STORE_PT_GLOBALS(base_reg) \
st %g1, [%base_reg + REGWIN_SZ + PT_G1]; \
std %g2, [%base_reg + REGWIN_SZ + PT_G2]; \
std %g4, [%base_reg + REGWIN_SZ + PT_G4]; \
std %g6, [%base_reg + REGWIN_SZ + PT_G6];
#define STORE_PT_YREG(base_reg, scratch) \
rd %y, %scratch; \
st %scratch, [%base_reg + REGWIN_SZ + PT_Y];
#define STORE_PT_PRIV(base_reg, pt_psr, pt_pc, pt_npc) \
st %pt_psr, [%base_reg + REGWIN_SZ + PT_PSR]; \
st %pt_pc, [%base_reg + REGWIN_SZ + PT_PC]; \
st %pt_npc, [%base_reg + REGWIN_SZ + PT_NPC];
#define STORE_PT_ALL(base_reg, reg_psr, reg_pc, reg_npc, g_scratch) \
STORE_PT_PRIV(base_reg, reg_psr, reg_pc, reg_npc) \
STORE_PT_GLOBALS(base_reg) \
STORE_PT_YREG(base_reg, g_scratch) \
STORE_PT_INS(base_reg)
#define SAVE_BOLIXED_USER_STACK(cur_reg, scratch) \
ld [%cur_reg + AOFF_task_tss + AOFF_thread_w_saved], %scratch; \
sll %scratch, 2, %scratch; \
add %scratch, %cur_reg, %scratch; \
st %sp, [%scratch + AOFF_task_tss + AOFF_thread_rwbuf_stkptrs]; \
sub %scratch, %cur_reg, %scratch; \
sll %scratch, 4, %scratch; \
add %scratch, %cur_reg, %scratch; \
STORE_WINDOW(scratch + AOFF_task_tss + AOFF_thread_reg_window); \
sub %scratch, %cur_reg, %scratch; \
srl %scratch, 6, %scratch; \
add %scratch, 1, %scratch; \
st %scratch, [%cur_reg + AOFF_task_tss + AOFF_thread_w_saved];
#ifdef __SMP__
#define LOAD_CURRENT4M(dest_reg, idreg) \
rd %tbr, %idreg; \
sethi %hi(C_LABEL(current_set)), %dest_reg; \
srl %idreg, 10, %idreg; \
or %dest_reg, %lo(C_LABEL(current_set)), %dest_reg; \
and %idreg, 0xc, %idreg; \
ld [%idreg + %dest_reg], %dest_reg;
/* Sliiick. We have a Linux current register :) -jj */
#define LOAD_CURRENT4D(dest_reg) \
lda [%g0] ASI_M_VIKING_TMP2, %dest_reg;
/* Blackbox - take care with this... - check smp4m and smp4d before changing this. */
#define LOAD_CURRENT(dest_reg, idreg) \
sethi %hi(___b_load_current), %idreg; \
sethi %hi(C_LABEL(current_set)), %dest_reg; \
sethi %hi(C_LABEL(boot_cpu_id4)), %idreg; \
or %dest_reg, %lo(C_LABEL(current_set)), %dest_reg; \
ldub [%idreg + %lo(C_LABEL(boot_cpu_id4))], %idreg; \
ld [%idreg + %dest_reg], %dest_reg;
#else
#define LOAD_CURRENT(dest_reg, idreg) \
sethi %hi(C_LABEL(current_set)), %idreg; \
ld [%idreg + %lo(C_LABEL(current_set))], %dest_reg;
#endif
#endif /* !(_SPARC_WINMACRO_H) */
|
