1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /*
3 * Copyright (C) 2001 PPC64 Team, IBM Corp
4 *
5 * This struct defines the way the registers are stored on the
6 * kernel stack during a system call or other kernel entry.
7 *
8 * this should only contain volatile regs
9 * since we can keep non-volatile in the thread_struct
10 * should set this up when only volatiles are saved
11 * by intr code.
12 *
13 * Since this is going on the stack, *CARE MUST BE TAKEN* to insure
14 * that the overall structure is a multiple of 16 bytes in length.
15 *
16 * Note that the offsets of the fields in this struct correspond with
17 * the PT_* values below. This simplifies arch/powerpc/kernel/ptrace.c.
18 *
19 * This program is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU General Public License
21 * as published by the Free Software Foundation; either version
22 * 2 of the License, or (at your option) any later version.
23 */
24 #ifndef _UAPI_ASM_POWERPC_PTRACE_H
25 #define _UAPI_ASM_POWERPC_PTRACE_H
26
27
28 #include <linux/types.h>
29
30 #ifndef __ASSEMBLY__
31
32 #ifdef __KERNEL__
33 struct user_pt_regs
34 #else
35 struct pt_regs
36 #endif
37 {
38 unsigned long gpr[32];
39 unsigned long nip;
40 unsigned long msr;
41 unsigned long orig_gpr3; /* Used for restarting system calls */
42 unsigned long ctr;
43 unsigned long link;
44 unsigned long xer;
45 unsigned long ccr;
46 #ifdef __powerpc64__
47 unsigned long softe; /* Soft enabled/disabled */
48 #else
49 unsigned long mq; /* 601 only (not used at present) */
50 /* Used on APUS to hold IPL value. */
51 #endif
52 unsigned long trap; /* Reason for being here */
53 /* N.B. for critical exceptions on 4xx, the dar and dsisr
54 fields are overloaded to hold srr0 and srr1. */
55 unsigned long dar; /* Fault registers */
56 unsigned long dsisr; /* on 4xx/Book-E used for ESR */
57 unsigned long result; /* Result of a system call */
58 };
59
60 #endif /* __ASSEMBLY__ */
61
62
63 /*
64 * Offsets used by 'ptrace' system call interface.
65 * These can't be changed without breaking binary compatibility
66 * with MkLinux, etc.
67 */
68 #define PT_R0 0
69 #define PT_R1 1
70 #define PT_R2 2
71 #define PT_R3 3
72 #define PT_R4 4
73 #define PT_R5 5
74 #define PT_R6 6
75 #define PT_R7 7
76 #define PT_R8 8
77 #define PT_R9 9
78 #define PT_R10 10
79 #define PT_R11 11
80 #define PT_R12 12
81 #define PT_R13 13
82 #define PT_R14 14
83 #define PT_R15 15
84 #define PT_R16 16
85 #define PT_R17 17
86 #define PT_R18 18
87 #define PT_R19 19
88 #define PT_R20 20
89 #define PT_R21 21
90 #define PT_R22 22
91 #define PT_R23 23
92 #define PT_R24 24
93 #define PT_R25 25
94 #define PT_R26 26
95 #define PT_R27 27
96 #define PT_R28 28
97 #define PT_R29 29
98 #define PT_R30 30
99 #define PT_R31 31
100
101 #define PT_NIP 32
102 #define PT_MSR 33
103 #define PT_ORIG_R3 34
104 #define PT_CTR 35
105 #define PT_LNK 36
106 #define PT_XER 37
107 #define PT_CCR 38
108 #ifndef __powerpc64__
109 #define PT_MQ 39
110 #else
111 #define PT_SOFTE 39
112 #endif
113 #define PT_TRAP 40
114 #define PT_DAR 41
115 #define PT_DSISR 42
116 #define PT_RESULT 43
117 #define PT_DSCR 44
118 #define PT_REGS_COUNT 44
119
120 #define PT_FPR0 48 /* each FP reg occupies 2 slots in this space */
121
122 #ifndef __powerpc64__
123
124 #define PT_FPR31 (PT_FPR0 + 2*31)
125 #define PT_FPSCR (PT_FPR0 + 2*32 + 1)
126
127 #else /* __powerpc64__ */
128
129 #define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */
130
131
132 #define PT_VR0 82 /* each Vector reg occupies 2 slots in 64-bit */
133 #define PT_VSCR (PT_VR0 + 32*2 + 1)
134 #define PT_VRSAVE (PT_VR0 + 33*2)
135
136
137 /*
138 * Only store first 32 VSRs here. The second 32 VSRs in VR0-31
139 */
140 #define PT_VSR0 150 /* each VSR reg occupies 2 slots in 64-bit */
141 #define PT_VSR31 (PT_VSR0 + 2*31)
142 #endif /* __powerpc64__ */
143
144 /*
145 * Get/set all the altivec registers v0..v31, vscr, vrsave, in one go.
146 * The transfer totals 34 quadword. Quadwords 0-31 contain the
147 * corresponding vector registers. Quadword 32 contains the vscr as the
148 * last word (offset 12) within that quadword. Quadword 33 contains the
149 * vrsave as the first word (offset 0) within the quadword.
150 *
151 * This definition of the VMX state is compatible with the current PPC32
152 * ptrace interface. This allows signal handling and ptrace to use the same
153 * structures. This also simplifies the implementation of a bi-arch
154 * (combined (32- and 64-bit) gdb.
155 */
156 #define PTRACE_GETVRREGS 0x12
157 #define PTRACE_SETVRREGS 0x13
158
159 /* Get/set all the upper 32-bits of the SPE registers, accumulator, and
160 * spefscr, in one go */
161 #define PTRACE_GETEVRREGS 0x14
162 #define PTRACE_SETEVRREGS 0x15
163
164 /* Get the first 32 128bit VSX registers */
165 #define PTRACE_GETVSRREGS 0x1b
166 #define PTRACE_SETVSRREGS 0x1c
167
168 /* Syscall emulation defines */
169 #define PTRACE_SYSEMU 0x1d
170 #define PTRACE_SYSEMU_SINGLESTEP 0x1e
171
172 /*
173 * Get or set a debug register. The first 16 are DABR registers and the
174 * second 16 are IABR registers.
175 */
176 #define PTRACE_GET_DEBUGREG 0x19
177 #define PTRACE_SET_DEBUGREG 0x1a
178
179 /* (new) PTRACE requests using the same numbers as x86 and the same
180 * argument ordering. Additionally, they support more registers too
181 */
182 #define PTRACE_GETREGS 0xc
183 #define PTRACE_SETREGS 0xd
184 #define PTRACE_GETFPREGS 0xe
185 #define PTRACE_SETFPREGS 0xf
186 #define PTRACE_GETREGS64 0x16
187 #define PTRACE_SETREGS64 0x17
188
189 /* Calls to trace a 64bit program from a 32bit program */
190 #define PPC_PTRACE_PEEKTEXT_3264 0x95
191 #define PPC_PTRACE_PEEKDATA_3264 0x94
192 #define PPC_PTRACE_POKETEXT_3264 0x93
193 #define PPC_PTRACE_POKEDATA_3264 0x92
194 #define PPC_PTRACE_PEEKUSR_3264 0x91
195 #define PPC_PTRACE_POKEUSR_3264 0x90
196
197 #define PTRACE_SINGLEBLOCK 0x100 /* resume execution until next branch */
198
199 #define PPC_PTRACE_GETHWDBGINFO 0x89
200 #define PPC_PTRACE_SETHWDEBUG 0x88
201 #define PPC_PTRACE_DELHWDEBUG 0x87
202
203 #ifndef __ASSEMBLY__
204
205 struct ppc_debug_info {
206 __u32 version; /* Only version 1 exists to date */
207 __u32 num_instruction_bps;
208 __u32 num_data_bps;
209 __u32 num_condition_regs;
210 __u32 data_bp_alignment;
211 __u32 sizeof_condition; /* size of the DVC register */
212 __u64 features;
213 };
214
215 #endif /* __ASSEMBLY__ */
216
217 /*
218 * features will have bits indication whether there is support for:
219 */
220 #define PPC_DEBUG_FEATURE_INSN_BP_RANGE 0x0000000000000001
221 #define PPC_DEBUG_FEATURE_INSN_BP_MASK 0x0000000000000002
222 #define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x0000000000000004
223 #define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x0000000000000008
224 #define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x0000000000000010
225 #define PPC_DEBUG_FEATURE_DATA_BP_ARCH_31 0x0000000000000020
226
227 #ifndef __ASSEMBLY__
228
229 struct ppc_hw_breakpoint {
230 __u32 version; /* currently, version must be 1 */
231 __u32 trigger_type; /* only some combinations allowed */
232 __u32 addr_mode; /* address match mode */
233 __u32 condition_mode; /* break/watchpoint condition flags */
234 __u64 addr; /* break/watchpoint address */
235 __u64 addr2; /* range end or mask */
236 __u64 condition_value; /* contents of the DVC register */
237 };
238
239 #endif /* __ASSEMBLY__ */
240
241 /*
242 * Trigger Type
243 */
244 #define PPC_BREAKPOINT_TRIGGER_EXECUTE 0x00000001
245 #define PPC_BREAKPOINT_TRIGGER_READ 0x00000002
246 #define PPC_BREAKPOINT_TRIGGER_WRITE 0x00000004
247 #define PPC_BREAKPOINT_TRIGGER_RW \
248 (PPC_BREAKPOINT_TRIGGER_READ | PPC_BREAKPOINT_TRIGGER_WRITE)
249
250 /*
251 * Address Mode
252 */
253 #define PPC_BREAKPOINT_MODE_EXACT 0x00000000
254 #define PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE 0x00000001
255 #define PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE 0x00000002
256 #define PPC_BREAKPOINT_MODE_MASK 0x00000003
257
258 /*
259 * Condition Mode
260 */
261 #define PPC_BREAKPOINT_CONDITION_MODE 0x00000003
262 #define PPC_BREAKPOINT_CONDITION_NONE 0x00000000
263 #define PPC_BREAKPOINT_CONDITION_AND 0x00000001
264 #define PPC_BREAKPOINT_CONDITION_EXACT PPC_BREAKPOINT_CONDITION_AND
265 #define PPC_BREAKPOINT_CONDITION_OR 0x00000002
266 #define PPC_BREAKPOINT_CONDITION_AND_OR 0x00000003
267 #define PPC_BREAKPOINT_CONDITION_BE_ALL 0x00ff0000
268 #define PPC_BREAKPOINT_CONDITION_BE_SHIFT 16
269 #define PPC_BREAKPOINT_CONDITION_BE(n) \
270 (1<<((n)+PPC_BREAKPOINT_CONDITION_BE_SHIFT))
271
272 #endif /* _UAPI_ASM_POWERPC_PTRACE_H */
273
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