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7#ifndef __ASM_SPARC64_PROCESSOR_H
8#define __ASM_SPARC64_PROCESSOR_H
9
10
11
12
13
14#define current_text_addr() ({ void *pc; __asm__("rd %%pc, %0" : "=r" (pc)); pc; })
15
16#include <asm/asi.h>
17#include <asm/pstate.h>
18#include <asm/ptrace.h>
19#include <asm/page.h>
20
21
22#define wp_works_ok 1
23#define wp_works_ok__is_a_macro
24
25
26
27
28
29
30
31
32#define VA_BITS 44
33#ifndef __ASSEMBLY__
34#define VPTE_SIZE (1UL << (VA_BITS - PAGE_SHIFT + 3))
35#else
36#define VPTE_SIZE (1 << (VA_BITS - PAGE_SHIFT + 3))
37#endif
38
39#define TASK_SIZE_OF(tsk) \
40 (test_tsk_thread_flag(tsk,TIF_32BIT) ? \
41 (1UL << 32UL) : ((unsigned long)-VPTE_SIZE))
42#define TASK_SIZE \
43 (test_thread_flag(TIF_32BIT) ? \
44 (1UL << 32UL) : ((unsigned long)-VPTE_SIZE))
45#ifdef __KERNEL__
46
47#define STACK_TOP32 ((1UL << 32UL) - PAGE_SIZE)
48#define STACK_TOP64 (0x0000080000000000UL - (1UL << 32UL))
49
50#define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
51 STACK_TOP32 : STACK_TOP64)
52
53#define STACK_TOP_MAX STACK_TOP64
54
55#endif
56
57#ifndef __ASSEMBLY__
58
59typedef struct {
60 unsigned char seg;
61} mm_segment_t;
62
63
64
65struct thread_struct {
66#ifdef CONFIG_DEBUG_SPINLOCK
67
68
69
70
71 int smp_lock_count;
72 unsigned int smp_lock_pc;
73#else
74 int dummy;
75#endif
76};
77
78#endif
79
80#ifndef CONFIG_DEBUG_SPINLOCK
81#define INIT_THREAD { \
82 0, \
83}
84#else
85#define INIT_THREAD { \
86 \
87 0, 0, \
88}
89#endif
90
91#ifndef __ASSEMBLY__
92
93#include <linux/types.h>
94#include <asm/fpumacro.h>
95
96
97struct task_struct;
98unsigned long thread_saved_pc(struct task_struct *);
99
100
101#ifdef CONFIG_SMP
102#define TSTATE_INITIAL_MM TSTATE_TSO
103#else
104#define TSTATE_INITIAL_MM TSTATE_RMO
105#endif
106
107
108#define start_thread(regs, pc, sp) \
109do { \
110 unsigned long __asi = ASI_PNF; \
111 regs->tstate = (regs->tstate & (TSTATE_CWP)) | (TSTATE_INITIAL_MM|TSTATE_IE) | (__asi << 24UL); \
112 regs->tpc = ((pc & (~3)) - 4); \
113 regs->tnpc = regs->tpc + 4; \
114 regs->y = 0; \
115 set_thread_wstate(1 << 3); \
116 if (current_thread_info()->utraps) { \
117 if (*(current_thread_info()->utraps) < 2) \
118 kfree(current_thread_info()->utraps); \
119 else \
120 (*(current_thread_info()->utraps))--; \
121 current_thread_info()->utraps = NULL; \
122 } \
123 __asm__ __volatile__( \
124 "stx %%g0, [%0 + %2 + 0x00]\n\t" \
125 "stx %%g0, [%0 + %2 + 0x08]\n\t" \
126 "stx %%g0, [%0 + %2 + 0x10]\n\t" \
127 "stx %%g0, [%0 + %2 + 0x18]\n\t" \
128 "stx %%g0, [%0 + %2 + 0x20]\n\t" \
129 "stx %%g0, [%0 + %2 + 0x28]\n\t" \
130 "stx %%g0, [%0 + %2 + 0x30]\n\t" \
131 "stx %%g0, [%0 + %2 + 0x38]\n\t" \
132 "stx %%g0, [%0 + %2 + 0x40]\n\t" \
133 "stx %%g0, [%0 + %2 + 0x48]\n\t" \
134 "stx %%g0, [%0 + %2 + 0x50]\n\t" \
135 "stx %%g0, [%0 + %2 + 0x58]\n\t" \
136 "stx %%g0, [%0 + %2 + 0x60]\n\t" \
137 "stx %%g0, [%0 + %2 + 0x68]\n\t" \
138 "stx %1, [%0 + %2 + 0x70]\n\t" \
139 "stx %%g0, [%0 + %2 + 0x78]\n\t" \
140 "wrpr %%g0, (1 << 3), %%wstate\n\t" \
141 : \
142 : "r" (regs), "r" (sp - sizeof(struct reg_window) - STACK_BIAS), \
143 "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \
144 fprs_write(0); \
145 current_thread_info()->xfsr[0] = 0; \
146 current_thread_info()->fpsaved[0] = 0; \
147 regs->tstate &= ~TSTATE_PEF; \
148} while (0)
149
150#define start_thread32(regs, pc, sp) \
151do { \
152 unsigned long __asi = ASI_PNF; \
153 pc &= 0x00000000ffffffffUL; \
154 sp &= 0x00000000ffffffffUL; \
155 regs->tstate = (regs->tstate & (TSTATE_CWP))|(TSTATE_INITIAL_MM|TSTATE_IE|TSTATE_AM) | (__asi << 24UL); \
156 regs->tpc = ((pc & (~3)) - 4); \
157 regs->tnpc = regs->tpc + 4; \
158 regs->y = 0; \
159 set_thread_wstate(2 << 3); \
160 if (current_thread_info()->utraps) { \
161 if (*(current_thread_info()->utraps) < 2) \
162 kfree(current_thread_info()->utraps); \
163 else \
164 (*(current_thread_info()->utraps))--; \
165 current_thread_info()->utraps = NULL; \
166 } \
167 __asm__ __volatile__( \
168 "stx %%g0, [%0 + %2 + 0x00]\n\t" \
169 "stx %%g0, [%0 + %2 + 0x08]\n\t" \
170 "stx %%g0, [%0 + %2 + 0x10]\n\t" \
171 "stx %%g0, [%0 + %2 + 0x18]\n\t" \
172 "stx %%g0, [%0 + %2 + 0x20]\n\t" \
173 "stx %%g0, [%0 + %2 + 0x28]\n\t" \
174 "stx %%g0, [%0 + %2 + 0x30]\n\t" \
175 "stx %%g0, [%0 + %2 + 0x38]\n\t" \
176 "stx %%g0, [%0 + %2 + 0x40]\n\t" \
177 "stx %%g0, [%0 + %2 + 0x48]\n\t" \
178 "stx %%g0, [%0 + %2 + 0x50]\n\t" \
179 "stx %%g0, [%0 + %2 + 0x58]\n\t" \
180 "stx %%g0, [%0 + %2 + 0x60]\n\t" \
181 "stx %%g0, [%0 + %2 + 0x68]\n\t" \
182 "stx %1, [%0 + %2 + 0x70]\n\t" \
183 "stx %%g0, [%0 + %2 + 0x78]\n\t" \
184 "wrpr %%g0, (2 << 3), %%wstate\n\t" \
185 : \
186 : "r" (regs), "r" (sp - sizeof(struct reg_window32)), \
187 "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \
188 fprs_write(0); \
189 current_thread_info()->xfsr[0] = 0; \
190 current_thread_info()->fpsaved[0] = 0; \
191 regs->tstate &= ~TSTATE_PEF; \
192} while (0)
193
194
195#define release_thread(tsk) do { } while (0)
196
197unsigned long get_wchan(struct task_struct *task);
198
199#define task_pt_regs(tsk) (task_thread_info(tsk)->kregs)
200#define KSTK_EIP(tsk) (task_pt_regs(tsk)->tpc)
201#define KSTK_ESP(tsk) (task_pt_regs(tsk)->u_regs[UREG_FP])
202
203
204
205
206
207
208#define cpu_relax() asm volatile("\n99:\n\t" \
209 "rd %%ccr, %%g0\n\t" \
210 "rd %%ccr, %%g0\n\t" \
211 "rd %%ccr, %%g0\n\t" \
212 ".section .pause_3insn_patch,\"ax\"\n\t"\
213 ".word 99b\n\t" \
214 "wr %%g0, 128, %%asr27\n\t" \
215 "nop\n\t" \
216 "nop\n\t" \
217 ".previous" \
218 ::: "memory")
219#define cpu_relax_lowlatency() cpu_relax()
220
221
222
223
224
225#define ARCH_HAS_PREFETCH
226#define ARCH_HAS_PREFETCHW
227#define ARCH_HAS_SPINLOCK_PREFETCH
228
229static inline void prefetch(const void *x)
230{
231
232
233
234
235
236
237 __asm__ __volatile__("prefetch [%0], #one_write"
238 :
239 : "r" (x));
240}
241
242static inline void prefetchw(const void *x)
243{
244
245
246
247
248 __asm__ __volatile__("prefetch [%0], #n_writes"
249 :
250 : "r" (x));
251}
252
253#define spin_lock_prefetch(x) prefetchw(x)
254
255#define HAVE_ARCH_PICK_MMAP_LAYOUT
256
257int do_mathemu(struct pt_regs *regs, struct fpustate *f, bool illegal_insn_trap);
258
259#endif
260
261#endif
262