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gerrit-public.fairphone.software / kernel / msm-4.9 / 6beaddf243b2d4bbc9165fbd89429fa1a7526af1 / . / arch / ia64 / include / uapi / asm / ptrace.h
blob: 0a02f634e12baaf2409c1435d2ab2dde7b1b50b6 [file] [log] [blame]
David Howells43e40f22012-10-09 09:47:00 +0100[diff] [blame]1/*
2 * Copyright (C) 1998-2004 Hewlett-Packard Co
3 * David Mosberger-Tang <davidm@hpl.hp.com>
4 * Stephane Eranian <eranian@hpl.hp.com>
5 * Copyright (C) 2003 Intel Co
6 * Suresh Siddha <suresh.b.siddha@intel.com>
7 * Fenghua Yu <fenghua.yu@intel.com>
8 * Arun Sharma <arun.sharma@intel.com>
9 *
10 * 12/07/98 S. Eranian added pt_regs & switch_stack
11 * 12/21/98 D. Mosberger updated to match latest code
12 * 6/17/99 D. Mosberger added second unat member to "struct switch_stack"
13 *
14 */
15#ifndef _UAPI_ASM_IA64_PTRACE_H
16#define _UAPI_ASM_IA64_PTRACE_H
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
61#ifndef __ASSEMBLY__
62
63/*
64 * This struct defines the way the registers are saved on system
65 * calls.
66 *
67 * We don't save all floating point register because the kernel
68 * is compiled to use only a very small subset, so the other are
69 * untouched.
70 *
71 * THIS STRUCTURE MUST BE A MULTIPLE 16-BYTE IN SIZE
72 * (because the memory stack pointer MUST ALWAYS be aligned this way)
73 *
74 */
75struct pt_regs {
76 /* The following registers are saved by SAVE_MIN: */
77 unsigned long b6; /* scratch */
78 unsigned long b7; /* scratch */
79
80 unsigned long ar_csd; /* used by cmp8xchg16 (scratch) */
81 unsigned long ar_ssd; /* reserved for future use (scratch) */
82
83 unsigned long r8; /* scratch (return value register 0) */
84 unsigned long r9; /* scratch (return value register 1) */
85 unsigned long r10; /* scratch (return value register 2) */
86 unsigned long r11; /* scratch (return value register 3) */
87
88 unsigned long cr_ipsr; /* interrupted task's psr */
89 unsigned long cr_iip; /* interrupted task's instruction pointer */
90 /*
91 * interrupted task's function state; if bit 63 is cleared, it
92 * contains syscall's ar.pfs.pfm:
93 */
94 unsigned long cr_ifs;
95
96 unsigned long ar_unat; /* interrupted task's NaT register (preserved) */
97 unsigned long ar_pfs; /* prev function state */
98 unsigned long ar_rsc; /* RSE configuration */
99 /* The following two are valid only if cr_ipsr.cpl > 0 || ti->flags & _TIF_MCA_INIT */
100 unsigned long ar_rnat; /* RSE NaT */
101 unsigned long ar_bspstore; /* RSE bspstore */
102
103 unsigned long pr; /* 64 predicate registers (1 bit each) */
104 unsigned long b0; /* return pointer (bp) */
105 unsigned long loadrs; /* size of dirty partition << 16 */
106
107 unsigned long r1; /* the gp pointer */
108 unsigned long r12; /* interrupted task's memory stack pointer */
109 unsigned long r13; /* thread pointer */
110
111 unsigned long ar_fpsr; /* floating point status (preserved) */
112 unsigned long r15; /* scratch */
113
114 /* The remaining registers are NOT saved for system calls. */
115
116 unsigned long r14; /* scratch */
117 unsigned long r2; /* scratch */
118 unsigned long r3; /* scratch */
119
120 /* The following registers are saved by SAVE_REST: */
121 unsigned long r16; /* scratch */
122 unsigned long r17; /* scratch */
123 unsigned long r18; /* scratch */
124 unsigned long r19; /* scratch */
125 unsigned long r20; /* scratch */
126 unsigned long r21; /* scratch */
127 unsigned long r22; /* scratch */
128 unsigned long r23; /* scratch */
129 unsigned long r24; /* scratch */
130 unsigned long r25; /* scratch */
131 unsigned long r26; /* scratch */
132 unsigned long r27; /* scratch */
133 unsigned long r28; /* scratch */
134 unsigned long r29; /* scratch */
135 unsigned long r30; /* scratch */
136 unsigned long r31; /* scratch */
137
138 unsigned long ar_ccv; /* compare/exchange value (scratch) */
139
140 /*
141 * Floating point registers that the kernel considers scratch:
142 */
143 struct ia64_fpreg f6; /* scratch */
144 struct ia64_fpreg f7; /* scratch */
145 struct ia64_fpreg f8; /* scratch */
146 struct ia64_fpreg f9; /* scratch */
147 struct ia64_fpreg f10; /* scratch */
148 struct ia64_fpreg f11; /* scratch */
149};
150
151/*
152 * This structure contains the addition registers that need to
153 * preserved across a context switch. This generally consists of
154 * "preserved" registers.
155 */
156struct switch_stack {
157 unsigned long caller_unat; /* user NaT collection register (preserved) */
158 unsigned long ar_fpsr; /* floating-point status register */
159
160 struct ia64_fpreg f2; /* preserved */
161 struct ia64_fpreg f3; /* preserved */
162 struct ia64_fpreg f4; /* preserved */
163 struct ia64_fpreg f5; /* preserved */
164
165 struct ia64_fpreg f12; /* scratch, but untouched by kernel */
166 struct ia64_fpreg f13; /* scratch, but untouched by kernel */
167 struct ia64_fpreg f14; /* scratch, but untouched by kernel */
168 struct ia64_fpreg f15; /* scratch, but untouched by kernel */
169 struct ia64_fpreg f16; /* preserved */
170 struct ia64_fpreg f17; /* preserved */
171 struct ia64_fpreg f18; /* preserved */
172 struct ia64_fpreg f19; /* preserved */
173 struct ia64_fpreg f20; /* preserved */
174 struct ia64_fpreg f21; /* preserved */
175 struct ia64_fpreg f22; /* preserved */
176 struct ia64_fpreg f23; /* preserved */
177 struct ia64_fpreg f24; /* preserved */
178 struct ia64_fpreg f25; /* preserved */
179 struct ia64_fpreg f26; /* preserved */
180 struct ia64_fpreg f27; /* preserved */
181 struct ia64_fpreg f28; /* preserved */
182 struct ia64_fpreg f29; /* preserved */
183 struct ia64_fpreg f30; /* preserved */
184 struct ia64_fpreg f31; /* preserved */
185
186 unsigned long r4; /* preserved */
187 unsigned long r5; /* preserved */
188 unsigned long r6; /* preserved */
189 unsigned long r7; /* preserved */
190
191 unsigned long b0; /* so we can force a direct return in copy_thread */
192 unsigned long b1;
193 unsigned long b2;
194 unsigned long b3;
195 unsigned long b4;
196 unsigned long b5;
197
198 unsigned long ar_pfs; /* previous function state */
199 unsigned long ar_lc; /* loop counter (preserved) */
200 unsigned long ar_unat; /* NaT bits for r4-r7 */
201 unsigned long ar_rnat; /* RSE NaT collection register */
202 unsigned long ar_bspstore; /* RSE dirty base (preserved) */
203 unsigned long pr; /* 64 predicate registers (1 bit each) */
204};
205
206
207/* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */
208struct pt_all_user_regs {
209 unsigned long nat;
210 unsigned long cr_iip;
211 unsigned long cfm;
212 unsigned long cr_ipsr;
213 unsigned long pr;
214
215 unsigned long gr[32];
216 unsigned long br[8];
217 unsigned long ar[128];
218 struct ia64_fpreg fr[128];
219};
220
221#endif /* !__ASSEMBLY__ */
222
223/* indices to application-registers array in pt_all_user_regs */
224#define PT_AUR_RSC 16
225#define PT_AUR_BSP 17
226#define PT_AUR_BSPSTORE 18
227#define PT_AUR_RNAT 19
228#define PT_AUR_CCV 32
229#define PT_AUR_UNAT 36
230#define PT_AUR_FPSR 40
231#define PT_AUR_PFS 64
232#define PT_AUR_LC 65
233#define PT_AUR_EC 66
234
235/*
236 * The numbers chosen here are somewhat arbitrary but absolutely MUST
237 * not overlap with any of the number assigned in <linux/ptrace.h>.
238 */
239#define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */
240#define PTRACE_OLD_GETSIGINFO 13 /* (replaced by PTRACE_GETSIGINFO in <linux/ptrace.h>) */
241#define PTRACE_OLD_SETSIGINFO 14 /* (replaced by PTRACE_SETSIGINFO in <linux/ptrace.h>) */
242#define PTRACE_GETREGS 18 /* get all registers (pt_all_user_regs) in one shot */
243#define PTRACE_SETREGS 19 /* set all registers (pt_all_user_regs) in one shot */
244
245#define PTRACE_OLDSETOPTIONS 21
246
247#endif /* _UAPI_ASM_IA64_PTRACE_H */