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10#include <asm/asi.h>
11#include <asm/pstate.h>
12#include <asm/ptrace.h>
13#include <asm/page.h>
14#include <asm/spitfire.h>
15#include <asm/head.h>
16#include <asm/processor.h>
17#include <asm/mmu.h>
18
19#define TASK_REGOFF (THREAD_SIZE-TRACEREG_SZ-STACKFRAME_SZ)
20#define ETRAP_PSTATE1 (PSTATE_TSO | PSTATE_PRIV)
21#define ETRAP_PSTATE2 \
22 (PSTATE_TSO | PSTATE_PEF | PSTATE_PRIV | PSTATE_IE)
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24
25
26
27
28
29 .text
30 .align 64
31 .globl etrap_syscall, etrap, etrap_irq, etraptl1
32etrap: rdpr %pil, %g2
33etrap_irq: clr %g3
34etrap_syscall: TRAP_LOAD_THREAD_REG(%g6, %g1)
35 rdpr %tstate, %g1
36 or %g1, %g3, %g1
37 sllx %g2, 20, %g3
38 andcc %g1, TSTATE_PRIV, %g0
39 or %g1, %g3, %g1
40 bne,pn %xcc, 1f
41 sub %sp, STACKFRAME_SZ+TRACEREG_SZ-STACK_BIAS, %g2
42661: wrpr %g0, 7, %cleanwin
43 .section .fast_win_ctrl_1insn_patch, "ax"
44 .word 661b
45 .word 0x85880000 ! allclean
46 .previous
47
48 sethi %hi(TASK_REGOFF), %g2
49 sethi %hi(TSTATE_PEF), %g3
50 or %g2, %lo(TASK_REGOFF), %g2
51 and %g1, %g3, %g3
52 brnz,pn %g3, 1f
53 add %g6, %g2, %g2
54 wr %g0, 0, %fprs
551: rdpr %tpc, %g3
56
57 stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TSTATE]
58 rdpr %tnpc, %g1
59 stx %g3, [%g2 + STACKFRAME_SZ + PT_V9_TPC]
60 rd %y, %g3
61 stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TNPC]
62 rdpr %tt, %g1
63 st %g3, [%g2 + STACKFRAME_SZ + PT_V9_Y]
64 sethi %hi(PT_REGS_MAGIC), %g3
65 or %g3, %g1, %g1
66 st %g1, [%g2 + STACKFRAME_SZ + PT_V9_MAGIC]
67
68 rdpr %cansave, %g1
69 brnz,pt %g1, etrap_save
70 nop
71
72 rdpr %cwp, %g1
73 add %g1, 2, %g1
74 wrpr %g1, %cwp
75 be,pt %xcc, etrap_user_spill
76 mov ASI_AIUP, %g3
77
78 rdpr %otherwin, %g3
79 brz %g3, etrap_kernel_spill
80 mov ASI_AIUS, %g3
81
82etrap_user_spill:
83
84 wr %g3, 0x0, %asi
85 ldx [%g6 + TI_FLAGS], %g3
86 and %g3, _TIF_32BIT, %g3
87 brnz,pt %g3, etrap_user_spill_32bit
88 nop
89 ba,a,pt %xcc, etrap_user_spill_64bit
90
91etrap_save: save %g2, -STACK_BIAS, %sp
92 mov %g6, %l6
93
94 bne,pn %xcc, 3f
95 mov PRIMARY_CONTEXT, %l4
96661: rdpr %canrestore, %g3
97 .section .fast_win_ctrl_1insn_patch, "ax"
98 .word 661b
99 nop
100 .previous
101
102 rdpr %wstate, %g2
103661: wrpr %g0, 0, %canrestore
104 .section .fast_win_ctrl_1insn_patch, "ax"
105 .word 661b
106 nop
107 .previous
108 sll %g2, 3, %g2
109
110
111 mov 1, %l5
112 sth %l5, [%l6 + TI_SYS_NOERROR]
113
114661: wrpr %g3, 0, %otherwin
115 .section .fast_win_ctrl_1insn_patch, "ax"
116 .word 661b
117 .word 0x87880000 ! otherw
118 .previous
119
120 wrpr %g2, 0, %wstate
121 sethi %hi(sparc64_kern_pri_context), %g2
122 ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3
123
124661: stxa %g3, [%l4] ASI_DMMU
125 .section .sun4v_1insn_patch, "ax"
126 .word 661b
127 stxa %g3, [%l4] ASI_MMU
128 .previous
129
130 sethi %hi(KERNBASE), %l4
131 flush %l4
132 mov ASI_AIUS, %l7
1332: mov %g4, %l4
134 mov %g5, %l5
135 add %g7, 4, %l2
136
137
138661: wrpr %g0, ETRAP_PSTATE1, %pstate
139 .section .sun4v_1insn_patch, "ax"
140 .word 661b
141 SET_GL(0)
142 .previous
143
144 stx %g1, [%sp + PTREGS_OFF + PT_V9_G1]
145 stx %g2, [%sp + PTREGS_OFF + PT_V9_G2]
146 sllx %l7, 24, %l7
147 stx %g3, [%sp + PTREGS_OFF + PT_V9_G3]
148 rdpr %cwp, %l0
149 stx %g4, [%sp + PTREGS_OFF + PT_V9_G4]
150 stx %g5, [%sp + PTREGS_OFF + PT_V9_G5]
151 stx %g6, [%sp + PTREGS_OFF + PT_V9_G6]
152 stx %g7, [%sp + PTREGS_OFF + PT_V9_G7]
153 or %l7, %l0, %l7
154 sethi %hi(TSTATE_TSO | TSTATE_PEF), %l0
155 or %l7, %l0, %l7
156 wrpr %l2, %tnpc
157 wrpr %l7, (TSTATE_PRIV | TSTATE_IE), %tstate
158 stx %i0, [%sp + PTREGS_OFF + PT_V9_I0]
159 stx %i1, [%sp + PTREGS_OFF + PT_V9_I1]
160 stx %i2, [%sp + PTREGS_OFF + PT_V9_I2]
161 stx %i3, [%sp + PTREGS_OFF + PT_V9_I3]
162 stx %i4, [%sp + PTREGS_OFF + PT_V9_I4]
163 stx %i5, [%sp + PTREGS_OFF + PT_V9_I5]
164 stx %i6, [%sp + PTREGS_OFF + PT_V9_I6]
165 mov %l6, %g6
166 stx %i7, [%sp + PTREGS_OFF + PT_V9_I7]
167 LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %l1)
168 ldx [%g6 + TI_TASK], %g4
169 done
170
1713: mov ASI_P, %l7
172 ldub [%l6 + TI_FPDEPTH], %l5
173 add %l6, TI_FPSAVED + 1, %l4
174 srl %l5, 1, %l3
175 add %l5, 2, %l5
176
177
178 sth %l5, [%l6 + TI_SYS_NOERROR]
179 ba,pt %xcc, 2b
180 stb %g0, [%l4 + %l3]
181 nop
182
183etraptl1:
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193
194 TRAP_LOAD_THREAD_REG(%g6, %g1)
195 sub %sp, ((4 * 8) * 4) + 8, %g2
196 rdpr %tl, %g1
197
198 wrpr %g0, 1, %tl
199 rdpr %tstate, %g3
200 stx %g3, [%g2 + STACK_BIAS + 0x00]
201 rdpr %tpc, %g3
202 stx %g3, [%g2 + STACK_BIAS + 0x08]
203 rdpr %tnpc, %g3
204 stx %g3, [%g2 + STACK_BIAS + 0x10]
205 rdpr %tt, %g3
206 stx %g3, [%g2 + STACK_BIAS + 0x18]
207
208 wrpr %g0, 2, %tl
209 rdpr %tstate, %g3
210 stx %g3, [%g2 + STACK_BIAS + 0x20]
211 rdpr %tpc, %g3
212 stx %g3, [%g2 + STACK_BIAS + 0x28]
213 rdpr %tnpc, %g3
214 stx %g3, [%g2 + STACK_BIAS + 0x30]
215 rdpr %tt, %g3
216 stx %g3, [%g2 + STACK_BIAS + 0x38]
217
218 sethi %hi(is_sun4v), %g3
219 lduw [%g3 + %lo(is_sun4v)], %g3
220 brnz,pn %g3, finish_tl1_capture
221 nop
222
223 wrpr %g0, 3, %tl
224 rdpr %tstate, %g3
225 stx %g3, [%g2 + STACK_BIAS + 0x40]
226 rdpr %tpc, %g3
227 stx %g3, [%g2 + STACK_BIAS + 0x48]
228 rdpr %tnpc, %g3
229 stx %g3, [%g2 + STACK_BIAS + 0x50]
230 rdpr %tt, %g3
231 stx %g3, [%g2 + STACK_BIAS + 0x58]
232
233 wrpr %g0, 4, %tl
234 rdpr %tstate, %g3
235 stx %g3, [%g2 + STACK_BIAS + 0x60]
236 rdpr %tpc, %g3
237 stx %g3, [%g2 + STACK_BIAS + 0x68]
238 rdpr %tnpc, %g3
239 stx %g3, [%g2 + STACK_BIAS + 0x70]
240 rdpr %tt, %g3
241 stx %g3, [%g2 + STACK_BIAS + 0x78]
242
243 stx %g1, [%g2 + STACK_BIAS + 0x80]
244
245finish_tl1_capture:
246 wrpr %g0, 1, %tl
247661: nop
248 .section .sun4v_1insn_patch, "ax"
249 .word 661b
250 SET_GL(1)
251 .previous
252
253 rdpr %tstate, %g1
254 sub %g2, STACKFRAME_SZ + TRACEREG_SZ - STACK_BIAS, %g2
255 ba,pt %xcc, 1b
256 andcc %g1, TSTATE_PRIV, %g0
257
258#undef TASK_REGOFF
259#undef ETRAP_PSTATE1
260
