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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _CRIS_ARCH_PTRACE_H
3#define _CRIS_ARCH_PTRACE_H
4
5/* Frame types */
6
7#define CRIS_FRAME_NORMAL 0 /* normal frame without SBFS stacking */
8#define CRIS_FRAME_BUSFAULT 1 /* frame stacked using SBFS, need RBF return
9 path */
10
11/* Register numbers in the ptrace system call interface */
12
13#define PT_FRAMETYPE 0
14#define PT_ORIG_R10 1
15#define PT_R13 2
16#define PT_R12 3
17#define PT_R11 4
18#define PT_R10 5
19#define PT_R9 6
20#define PT_R8 7
21#define PT_R7 8
22#define PT_R6 9
23#define PT_R5 10
24#define PT_R4 11
25#define PT_R3 12
26#define PT_R2 13
27#define PT_R1 14
28#define PT_R0 15
29#define PT_MOF 16
30#define PT_DCCR 17
31#define PT_SRP 18
32#define PT_IRP 19 /* This is actually the debugged process' PC */
33#define PT_CSRINSTR 20 /* CPU Status record remnants -
34 valid if frametype == busfault */
35#define PT_CSRADDR 21
36#define PT_CSRDATA 22
37#define PT_USP 23 /* special case - USP is not in the pt_regs */
38#define PT_MAX 23
39
40/* Condition code bit numbers. The same numbers apply to CCR of course,
41 but we use DCCR everywhere else, so let's try and be consistent. */
42#define C_DCCR_BITNR 0
43#define V_DCCR_BITNR 1
44#define Z_DCCR_BITNR 2
45#define N_DCCR_BITNR 3
46#define X_DCCR_BITNR 4
47#define I_DCCR_BITNR 5
48#define B_DCCR_BITNR 6
49#define M_DCCR_BITNR 7
50#define U_DCCR_BITNR 8
51#define P_DCCR_BITNR 9
52#define F_DCCR_BITNR 10
53
54/* pt_regs not only specifices the format in the user-struct during
55 * ptrace but is also the frame format used in the kernel prologue/epilogues
56 * themselves
57 */
58
59struct pt_regs {
60 unsigned long frametype; /* type of stackframe */
61 unsigned long orig_r10;
62 /* pushed by movem r13, [sp] in SAVE_ALL, movem pushes backwards */
63 unsigned long r13;
64 unsigned long r12;
65 unsigned long r11;
66 unsigned long r10;
67 unsigned long r9;
68 unsigned long r8;
69 unsigned long r7;
70 unsigned long r6;
71 unsigned long r5;
72 unsigned long r4;
73 unsigned long r3;
74 unsigned long r2;
75 unsigned long r1;
76 unsigned long r0;
77 unsigned long mof;
78 unsigned long dccr;
79 unsigned long srp;
80 unsigned long irp; /* This is actually the debugged process' PC */
81 unsigned long csrinstr;
82 unsigned long csraddr;
83 unsigned long csrdata;
84};
85
86/* switch_stack is the extra stuff pushed onto the stack in _resume (entry.S)
87 * when doing a context-switch. it is used (apart from in resume) when a new
88 * thread is made and we need to make _resume (which is starting it for the
89 * first time) realise what is going on.
90 *
91 * Actually, the use is very close to the thread struct (TSS) in that both the
92 * switch_stack and the TSS are used to keep thread stuff when switching in
93 * _resume.
94 */
95
96struct switch_stack {
97 unsigned long r9;
98 unsigned long r8;
99 unsigned long r7;
100 unsigned long r6;
101 unsigned long r5;
102 unsigned long r4;
103 unsigned long r3;
104 unsigned long r2;
105 unsigned long r1;
106 unsigned long r0;
107 unsigned long return_ip; /* ip that _resume will return to */
108};
109
110#ifdef __KERNEL__
111
112/* bit 8 is user-mode flag */
113#define user_mode(regs) (((regs)->dccr & 0x100) != 0)
114#define instruction_pointer(regs) ((regs)->irp)
115#define profile_pc(regs) instruction_pointer(regs)
116
117#endif /* __KERNEL__ */
118
119#endif