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authorTony Luck <tony.luck@intel.com>2008-08-01 13:13:32 -0400
committerTony Luck <tony.luck@intel.com>2008-08-01 13:21:21 -0400
commit7f30491ccd28627742e37899453ae20e3da8e18f (patch)
tree7291c0a26ed3a31acf9542857af3981d278f5de8 /arch/ia64/include/asm/ptrace.h
parent94ad374a0751f40d25e22e036c37f7263569d24c (diff)
[IA64] Move include/asm-ia64 to arch/ia64/include/asm
After moving the the include files there were a few clean-ups: 1) Some files used #include <asm-ia64/xyz.h>, changed to <asm/xyz.h> 2) Some comments alerted maintainers to look at various header files to make matching updates if certain code were to be changed. Updated these comments to use the new include paths. 3) Some header files mentioned their own names in initial comments. Just deleted these self references. Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/include/asm/ptrace.h')
-rw-r--r--arch/ia64/include/asm/ptrace.h364
1 files changed, 364 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/ptrace.h b/arch/ia64/include/asm/ptrace.h
new file mode 100644
index 000000000000..15f8dcfe6eee
--- /dev/null
+++ b/arch/ia64/include/asm/ptrace.h
@@ -0,0 +1,364 @@
1#ifndef _ASM_IA64_PTRACE_H
2#define _ASM_IA64_PTRACE_H
3
4/*
5 * Copyright (C) 1998-2004 Hewlett-Packard Co
6 * David Mosberger-Tang <davidm@hpl.hp.com>
7 * Stephane Eranian <eranian@hpl.hp.com>
8 * Copyright (C) 2003 Intel Co
9 * Suresh Siddha <suresh.b.siddha@intel.com>
10 * Fenghua Yu <fenghua.yu@intel.com>
11 * Arun Sharma <arun.sharma@intel.com>
12 *
13 * 12/07/98 S. Eranian added pt_regs & switch_stack
14 * 12/21/98 D. Mosberger updated to match latest code
15 * 6/17/99 D. Mosberger added second unat member to "struct switch_stack"
16 *
17 */
18/*
19 * When a user process is blocked, its state looks as follows:
20 *
21 * +----------------------+ ------- IA64_STK_OFFSET
22 * | | ^
23 * | struct pt_regs | |
24 * | | |
25 * +----------------------+ |
26 * | | |
27 * | memory stack | |
28 * | (growing downwards) | |
29 * //.....................// |
30 * |
31 * //.....................// |
32 * | | |
33 * +----------------------+ |
34 * | struct switch_stack | |
35 * | | |
36 * +----------------------+ |
37 * | | |
38 * //.....................// |
39 * |
40 * //.....................// |
41 * | | |
42 * | register stack | |
43 * | (growing upwards) | |
44 * | | |
45 * +----------------------+ | --- IA64_RBS_OFFSET
46 * | struct thread_info | | ^
47 * +----------------------+ | |
48 * | | | |
49 * | struct task_struct | | |
50 * current -> | | | |
51 * +----------------------+ -------
52 *
53 * Note that ar.ec is not saved explicitly in pt_reg or switch_stack.
54 * This is because ar.ec is saved as part of ar.pfs.
55 */
56
57
58#include <asm/fpu.h>
59
60#ifdef __KERNEL__
61#ifndef ASM_OFFSETS_C
62#include <asm/asm-offsets.h>
63#endif
64
65/*
66 * Base-2 logarithm of number of pages to allocate per task structure
67 * (including register backing store and memory stack):
68 */
69#if defined(CONFIG_IA64_PAGE_SIZE_4KB)
70# define KERNEL_STACK_SIZE_ORDER 3
71#elif defined(CONFIG_IA64_PAGE_SIZE_8KB)
72# define KERNEL_STACK_SIZE_ORDER 2
73#elif defined(CONFIG_IA64_PAGE_SIZE_16KB)
74# define KERNEL_STACK_SIZE_ORDER 1
75#else
76# define KERNEL_STACK_SIZE_ORDER 0
77#endif
78
79#define IA64_RBS_OFFSET ((IA64_TASK_SIZE + IA64_THREAD_INFO_SIZE + 31) & ~31)
80#define IA64_STK_OFFSET ((1 << KERNEL_STACK_SIZE_ORDER)*PAGE_SIZE)
81
82#define KERNEL_STACK_SIZE IA64_STK_OFFSET
83
84#endif /* __KERNEL__ */
85
86#ifndef __ASSEMBLY__
87
88/*
89 * This struct defines the way the registers are saved on system
90 * calls.
91 *
92 * We don't save all floating point register because the kernel
93 * is compiled to use only a very small subset, so the other are
94 * untouched.
95 *
96 * THIS STRUCTURE MUST BE A MULTIPLE 16-BYTE IN SIZE
97 * (because the memory stack pointer MUST ALWAYS be aligned this way)
98 *
99 */
100struct pt_regs {
101 /* The following registers are saved by SAVE_MIN: */
102 unsigned long b6; /* scratch */
103 unsigned long b7; /* scratch */
104
105 unsigned long ar_csd; /* used by cmp8xchg16 (scratch) */
106 unsigned long ar_ssd; /* reserved for future use (scratch) */
107
108 unsigned long r8; /* scratch (return value register 0) */
109 unsigned long r9; /* scratch (return value register 1) */
110 unsigned long r10; /* scratch (return value register 2) */
111 unsigned long r11; /* scratch (return value register 3) */
112
113 unsigned long cr_ipsr; /* interrupted task's psr */
114 unsigned long cr_iip; /* interrupted task's instruction pointer */
115 /*
116 * interrupted task's function state; if bit 63 is cleared, it
117 * contains syscall's ar.pfs.pfm:
118 */
119 unsigned long cr_ifs;
120
121 unsigned long ar_unat; /* interrupted task's NaT register (preserved) */
122 unsigned long ar_pfs; /* prev function state */
123 unsigned long ar_rsc; /* RSE configuration */
124 /* The following two are valid only if cr_ipsr.cpl > 0 || ti->flags & _TIF_MCA_INIT */
125 unsigned long ar_rnat; /* RSE NaT */
126 unsigned long ar_bspstore; /* RSE bspstore */
127
128 unsigned long pr; /* 64 predicate registers (1 bit each) */
129 unsigned long b0; /* return pointer (bp) */
130 unsigned long loadrs; /* size of dirty partition << 16 */
131
132 unsigned long r1; /* the gp pointer */
133 unsigned long r12; /* interrupted task's memory stack pointer */
134 unsigned long r13; /* thread pointer */
135
136 unsigned long ar_fpsr; /* floating point status (preserved) */
137 unsigned long r15; /* scratch */
138
139 /* The remaining registers are NOT saved for system calls. */
140
141 unsigned long r14; /* scratch */
142 unsigned long r2; /* scratch */
143 unsigned long r3; /* scratch */
144
145 /* The following registers are saved by SAVE_REST: */
146 unsigned long r16; /* scratch */
147 unsigned long r17; /* scratch */
148 unsigned long r18; /* scratch */
149 unsigned long r19; /* scratch */
150 unsigned long r20; /* scratch */
151 unsigned long r21; /* scratch */
152 unsigned long r22; /* scratch */
153 unsigned long r23; /* scratch */
154 unsigned long r24; /* scratch */
155 unsigned long r25; /* scratch */
156 unsigned long r26; /* scratch */
157 unsigned long r27; /* scratch */
158 unsigned long r28; /* scratch */
159 unsigned long r29; /* scratch */
160 unsigned long r30; /* scratch */
161 unsigned long r31; /* scratch */
162
163 unsigned long ar_ccv; /* compare/exchange value (scratch) */
164
165 /*
166 * Floating point registers that the kernel considers scratch:
167 */
168 struct ia64_fpreg f6; /* scratch */
169 struct ia64_fpreg f7; /* scratch */
170 struct ia64_fpreg f8; /* scratch */
171 struct ia64_fpreg f9; /* scratch */
172 struct ia64_fpreg f10; /* scratch */
173 struct ia64_fpreg f11; /* scratch */
174};
175
176/*
177 * This structure contains the addition registers that need to
178 * preserved across a context switch. This generally consists of
179 * "preserved" registers.
180 */
181struct switch_stack {
182 unsigned long caller_unat; /* user NaT collection register (preserved) */
183 unsigned long ar_fpsr; /* floating-point status register */
184
185 struct ia64_fpreg f2; /* preserved */
186 struct ia64_fpreg f3; /* preserved */
187 struct ia64_fpreg f4; /* preserved */
188 struct ia64_fpreg f5; /* preserved */
189
190 struct ia64_fpreg f12; /* scratch, but untouched by kernel */
191 struct ia64_fpreg f13; /* scratch, but untouched by kernel */
192 struct ia64_fpreg f14; /* scratch, but untouched by kernel */
193 struct ia64_fpreg f15; /* scratch, but untouched by kernel */
194 struct ia64_fpreg f16; /* preserved */
195 struct ia64_fpreg f17; /* preserved */
196 struct ia64_fpreg f18; /* preserved */
197 struct ia64_fpreg f19; /* preserved */
198 struct ia64_fpreg f20; /* preserved */
199 struct ia64_fpreg f21; /* preserved */
200 struct ia64_fpreg f22; /* preserved */
201 struct ia64_fpreg f23; /* preserved */
202 struct ia64_fpreg f24; /* preserved */
203 struct ia64_fpreg f25; /* preserved */
204 struct ia64_fpreg f26; /* preserved */
205 struct ia64_fpreg f27; /* preserved */
206 struct ia64_fpreg f28; /* preserved */
207 struct ia64_fpreg f29; /* preserved */
208 struct ia64_fpreg f30; /* preserved */
209 struct ia64_fpreg f31; /* preserved */
210
211 unsigned long r4; /* preserved */
212 unsigned long r5; /* preserved */
213 unsigned long r6; /* preserved */
214 unsigned long r7; /* preserved */
215
216 unsigned long b0; /* so we can force a direct return in copy_thread */
217 unsigned long b1;
218 unsigned long b2;
219 unsigned long b3;
220 unsigned long b4;
221 unsigned long b5;
222
223 unsigned long ar_pfs; /* previous function state */
224 unsigned long ar_lc; /* loop counter (preserved) */
225 unsigned long ar_unat; /* NaT bits for r4-r7 */
226 unsigned long ar_rnat; /* RSE NaT collection register */
227 unsigned long ar_bspstore; /* RSE dirty base (preserved) */
228 unsigned long pr; /* 64 predicate registers (1 bit each) */
229};
230
231#ifdef __KERNEL__
232
233#include <asm/current.h>
234#include <asm/page.h>
235
236/*
237 * We use the ia64_psr(regs)->ri to determine which of the three
238 * instructions in bundle (16 bytes) took the sample. Generate
239 * the canonical representation by adding to instruction pointer.
240 */
241# define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri)
242
243#define regs_return_value(regs) ((regs)->r8)
244
245/* Conserve space in histogram by encoding slot bits in address
246 * bits 2 and 3 rather than bits 0 and 1.
247 */
248#define profile_pc(regs) \
249({ \
250 unsigned long __ip = instruction_pointer(regs); \
251 (__ip & ~3UL) + ((__ip & 3UL) << 2); \
252})
253
254 /* given a pointer to a task_struct, return the user's pt_regs */
255# define task_pt_regs(t) (((struct pt_regs *) ((char *) (t) + IA64_STK_OFFSET)) - 1)
256# define ia64_psr(regs) ((struct ia64_psr *) &(regs)->cr_ipsr)
257# define user_mode(regs) (((struct ia64_psr *) &(regs)->cr_ipsr)->cpl != 0)
258# define user_stack(task,regs) ((long) regs - (long) task == IA64_STK_OFFSET - sizeof(*regs))
259# define fsys_mode(task,regs) \
260 ({ \
261 struct task_struct *_task = (task); \
262 struct pt_regs *_regs = (regs); \
263 !user_mode(_regs) && user_stack(_task, _regs); \
264 })
265
266 /*
267 * System call handlers that, upon successful completion, need to return a negative value
268 * should call force_successful_syscall_return() right before returning. On architectures
269 * where the syscall convention provides for a separate error flag (e.g., alpha, ia64,
270 * ppc{,64}, sparc{,64}, possibly others), this macro can be used to ensure that the error
271 * flag will not get set. On architectures which do not support a separate error flag,
272 * the macro is a no-op and the spurious error condition needs to be filtered out by some
273 * other means (e.g., in user-level, by passing an extra argument to the syscall handler,
274 * or something along those lines).
275 *
276 * On ia64, we can clear the user's pt_regs->r8 to force a successful syscall.
277 */
278# define force_successful_syscall_return() (task_pt_regs(current)->r8 = 0)
279
280 struct task_struct; /* forward decl */
281 struct unw_frame_info; /* forward decl */
282
283 extern void show_regs (struct pt_regs *);
284 extern void ia64_do_show_stack (struct unw_frame_info *, void *);
285 extern unsigned long ia64_get_user_rbs_end (struct task_struct *, struct pt_regs *,
286 unsigned long *);
287 extern long ia64_peek (struct task_struct *, struct switch_stack *, unsigned long,
288 unsigned long, long *);
289 extern long ia64_poke (struct task_struct *, struct switch_stack *, unsigned long,
290 unsigned long, long);
291 extern void ia64_flush_fph (struct task_struct *);
292 extern void ia64_sync_fph (struct task_struct *);
293 extern void ia64_sync_krbs(void);
294 extern long ia64_sync_user_rbs (struct task_struct *, struct switch_stack *,
295 unsigned long, unsigned long);
296
297 /* get nat bits for scratch registers such that bit N==1 iff scratch register rN is a NaT */
298 extern unsigned long ia64_get_scratch_nat_bits (struct pt_regs *pt, unsigned long scratch_unat);
299 /* put nat bits for scratch registers such that scratch register rN is a NaT iff bit N==1 */
300 extern unsigned long ia64_put_scratch_nat_bits (struct pt_regs *pt, unsigned long nat);
301
302 extern void ia64_increment_ip (struct pt_regs *pt);
303 extern void ia64_decrement_ip (struct pt_regs *pt);
304
305 extern void ia64_ptrace_stop(void);
306 #define arch_ptrace_stop(code, info) \
307 ia64_ptrace_stop()
308 #define arch_ptrace_stop_needed(code, info) \
309 (!test_thread_flag(TIF_RESTORE_RSE))
310
311 extern void ptrace_attach_sync_user_rbs (struct task_struct *);
312 #define arch_ptrace_attach(child) \
313 ptrace_attach_sync_user_rbs(child)
314
315 #define arch_has_single_step() (1)
316 extern void user_enable_single_step(struct task_struct *);
317 extern void user_disable_single_step(struct task_struct *);
318
319 #define arch_has_block_step() (1)
320 extern void user_enable_block_step(struct task_struct *);
321
322#endif /* !__KERNEL__ */
323
324/* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */
325struct pt_all_user_regs {
326 unsigned long nat;
327 unsigned long cr_iip;
328 unsigned long cfm;
329 unsigned long cr_ipsr;
330 unsigned long pr;
331
332 unsigned long gr[32];
333 unsigned long br[8];
334 unsigned long ar[128];
335 struct ia64_fpreg fr[128];
336};
337
338#endif /* !__ASSEMBLY__ */
339
340/* indices to application-registers array in pt_all_user_regs */
341#define PT_AUR_RSC 16
342#define PT_AUR_BSP 17
343#define PT_AUR_BSPSTORE 18
344#define PT_AUR_RNAT 19
345#define PT_AUR_CCV 32
346#define PT_AUR_UNAT 36
347#define PT_AUR_FPSR 40
348#define PT_AUR_PFS 64
349#define PT_AUR_LC 65
350#define PT_AUR_EC 66
351
352/*
353 * The numbers chosen here are somewhat arbitrary but absolutely MUST
354 * not overlap with any of the number assigned in <linux/ptrace.h>.
355 */
356#define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */
357#define PTRACE_OLD_GETSIGINFO 13 /* (replaced by PTRACE_GETSIGINFO in <linux/ptrace.h>) */
358#define PTRACE_OLD_SETSIGINFO 14 /* (replaced by PTRACE_SETSIGINFO in <linux/ptrace.h>) */
359#define PTRACE_GETREGS 18 /* get all registers (pt_all_user_regs) in one shot */
360#define PTRACE_SETREGS 19 /* set all registers (pt_all_user_regs) in one shot */
361
362#define PTRACE_OLDSETOPTIONS 21
363
364#endif /* _ASM_IA64_PTRACE_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 19:00:09 -0500