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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48
49
50#define TASK_UNMAPPED_BASE PAGE_ALIGN(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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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;
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111
112 unsigned long flags;
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117
118 struct pt_regs *kregs;
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122 struct pt_regs *uregs;
123
124 unsigned long address;
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127
128 union thread_xstate *xstate;
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137
138 unsigned char fpu_counter;
139};
140
141#define INIT_MMAP \
142{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }
143
144#define INIT_THREAD { \
145 .sp = sizeof(init_stack) + \
146 (long) &init_stack, \
147 .pc = 0, \
148 .kregs = &fake_swapper_regs, \
149 .uregs = NULL, \
150 .address = 0, \
151 .flags = 0, \
152}
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156
157#define SR_USER (SR_MMU | SR_FD)
158
159#define start_thread(_regs, new_pc, new_sp) \
160 _regs->sr = SR_USER; \
161 _regs->pc = new_pc - 4; \
162 _regs->pc |= 1; \
163 _regs->regs[18] = 0; \
164 _regs->regs[15] = new_sp
165
166
167struct task_struct;
168struct mm_struct;
169
170
171extern void release_thread(struct task_struct *);
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173
174#define copy_segments(p, mm) do { } while (0)
175#define release_segments(mm) do { } while (0)
176#define forget_segments() do { } while (0)
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180
181static inline void disable_fpu(void)
182{
183 unsigned long long __dummy;
184
185
186 __asm__ __volatile__("getcon " __SR ", %0\n\t"
187 "or %0, %1, %0\n\t"
188 "putcon %0, " __SR "\n\t"
189 : "=&r" (__dummy)
190 : "r" (SR_FD));
191}
192
193static inline void enable_fpu(void)
194{
195 unsigned long long __dummy;
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197
198 __asm__ __volatile__("getcon " __SR ", %0\n\t"
199 "and %0, %1, %0\n\t"
200 "putcon %0, " __SR "\n\t"
201 : "=&r" (__dummy)
202 : "r" (~SR_FD));
203}
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207
208#if defined(CONFIG_SH64_FPU_DENORM_FLUSH)
209#define FPSCR_INIT 0x00040000
210#else
211#define FPSCR_INIT 0x00000000
212#endif
213
214#ifdef CONFIG_SH_FPU
215
216void fpinit(struct sh_fpu_hard_struct *fpregs);
217#else
218#define fpinit(fpregs) do { } while (0)
219#endif
220
221extern struct task_struct *last_task_used_math;
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223
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225
226#define thread_saved_pc(tsk) (tsk->thread.pc)
227
228extern unsigned long get_wchan(struct task_struct *p);
229
230#define KSTK_EIP(tsk) ((tsk)->thread.pc)
231#define KSTK_ESP(tsk) ((tsk)->thread.sp)
232
233#endif
234#endif
235