1#ifndef __ASM_SH_PROCESSOR_64_H
2#define __ASM_SH_PROCESSOR_64_H
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15#ifndef __ASSEMBLY__
16
17#include <linux/compiler.h>
18#include <asm/page.h>
19#include <asm/types.h>
20#include <cpu/registers.h>
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22
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24
25
26#define current_text_addr() ({ \
27void *pc; \
28unsigned long long __dummy = 0; \
29__asm__("gettr tr0, %1\n\t" \
30 "pta 4, tr0\n\t" \
31 "gettr tr0, %0\n\t" \
32 "ptabs %1, tr0\n\t" \
33 :"=r" (pc), "=r" (__dummy) \
34 : "1" (__dummy)); \
35pc; })
36
37#endif
38
39
40
41
42#define TASK_SIZE 0x7ffff000UL
43
44#define STACK_TOP TASK_SIZE
45#define STACK_TOP_MAX STACK_TOP
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47
48
49
50#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
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65
66#if defined(CONFIG_SH64_SR_WATCH)
67#define SR_MMU 0x84000000
68#else
69#define SR_MMU 0x80000000
70#endif
71
72#define SR_IMASK 0x000000f0
73#define SR_FD 0x00008000
74#define SR_SSTEP 0x08000000
75
76#ifndef __ASSEMBLY__
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81
82
83struct sh_fpu_hard_struct {
84 unsigned long fp_regs[64];
85 unsigned int fpscr;
86
87};
88
89
90struct sh_fpu_soft_struct {
91 unsigned long fp_regs[64];
92 unsigned int fpscr;
93 unsigned char lookahead;
94 unsigned long entry_pc;
95};
96
97union thread_xstate {
98 struct sh_fpu_hard_struct hardfpu;
99 struct sh_fpu_soft_struct softfpu;
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103
104 unsigned long long alignment_dummy;
105};
106
107struct thread_struct {
108 unsigned long sp;
109 unsigned long pc;
110
111
112 unsigned long flags;
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117
118 struct pt_regs *kregs;
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120
121
122 struct pt_regs *uregs;
123
124 unsigned long address;
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126
127
128 union thread_xstate *xstate;
129};
130
131#define INIT_MMAP \
132{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }
133
134#define INIT_THREAD { \
135 .sp = sizeof(init_stack) + \
136 (long) &init_stack, \
137 .pc = 0, \
138 .kregs = &fake_swapper_regs, \
139 .uregs = NULL, \
140 .address = 0, \
141 .flags = 0, \
142}
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144
145
146
147#define SR_USER (SR_MMU | SR_FD)
148
149#define start_thread(_regs, new_pc, new_sp) \
150 _regs->sr = SR_USER; \
151 _regs->pc = new_pc - 4; \
152 _regs->pc |= 1; \
153 _regs->regs[18] = 0; \
154 _regs->regs[15] = new_sp
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156
157struct task_struct;
158struct mm_struct;
159
160
161extern void release_thread(struct task_struct *);
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163
164
165extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
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168
169#define copy_segments(p, mm) do { } while (0)
170#define release_segments(mm) do { } while (0)
171#define forget_segments() do { } while (0)
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175
176static inline void disable_fpu(void)
177{
178 unsigned long long __dummy;
179
180
181 __asm__ __volatile__("getcon " __SR ", %0\n\t"
182 "or %0, %1, %0\n\t"
183 "putcon %0, " __SR "\n\t"
184 : "=&r" (__dummy)
185 : "r" (SR_FD));
186}
187
188static inline void enable_fpu(void)
189{
190 unsigned long long __dummy;
191
192
193 __asm__ __volatile__("getcon " __SR ", %0\n\t"
194 "and %0, %1, %0\n\t"
195 "putcon %0, " __SR "\n\t"
196 : "=&r" (__dummy)
197 : "r" (~SR_FD));
198}
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200
201
202
203#if defined(CONFIG_SH64_FPU_DENORM_FLUSH)
204#define FPSCR_INIT 0x00040000
205#else
206#define FPSCR_INIT 0x00000000
207#endif
208
209#ifdef CONFIG_SH_FPU
210
211void fpinit(struct sh_fpu_hard_struct *fpregs);
212#else
213#define fpinit(fpregs) do { } while (0)
214#endif
215
216extern struct task_struct *last_task_used_math;
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218
219
220
221#define thread_saved_pc(tsk) (tsk->thread.pc)
222
223extern unsigned long get_wchan(struct task_struct *p);
224
225#define KSTK_EIP(tsk) ((tsk)->thread.pc)
226#define KSTK_ESP(tsk) ((tsk)->thread.sp)
227
228#endif
229#endif
230