1#ifndef _CRIS_ARCH_PTRACE_H
2#define _CRIS_ARCH_PTRACE_H
3
4/* Register numbers in the ptrace system call interface */
5
6#define PT_ORIG_R10  0
7#define PT_R0        1
8#define PT_R1        2
9#define PT_R2        3
10#define PT_R3        4
11#define PT_R4        5
12#define PT_R5        6
13#define PT_R6        7
14#define PT_R7        8
15#define PT_R8        9
16#define PT_R9        10
17#define PT_R10       11
18#define PT_R11       12
19#define PT_R12       13
20#define PT_R13       14
21#define PT_ACR       15
22#define PT_SRS       16
23#define PT_MOF       17
24#define PT_SPC       18
25#define PT_CCS       19
26#define PT_SRP       20
27#define PT_ERP       21    /* This is actually the debugged process' PC */
28#define PT_EXS       22
29#define PT_EDA       23
30#define PT_USP       24    /* special case - USP is not in the pt_regs */
31#define PT_PPC       25    /* special case - pseudo PC */
32#define PT_BP        26    /* Base number for BP registers. */
33#define PT_BP_CTRL   26    /* BP control register. */
34#define PT_MAX       40
35
36/* Condition code bit numbers. */
37#define C_CCS_BITNR 0
38#define V_CCS_BITNR 1
39#define Z_CCS_BITNR 2
40#define N_CCS_BITNR 3
41#define X_CCS_BITNR 4
42#define I_CCS_BITNR 5
43#define U_CCS_BITNR 6
44#define P_CCS_BITNR 7
45#define R_CCS_BITNR 8
46#define S_CCS_BITNR 9
47#define M_CCS_BITNR 30
48#define Q_CCS_BITNR 31
49#define CCS_SHIFT   10 /* Shift count for each level in CCS */
50
51/* pt_regs not only specifices the format in the user-struct during
52 * ptrace but is also the frame format used in the kernel prologue/epilogues
53 * themselves
54 */
55
56struct pt_regs {
57	unsigned long orig_r10;
58	/* pushed by movem r13, [sp] in SAVE_ALL. */
59	unsigned long r0;
60	unsigned long r1;
61	unsigned long r2;
62	unsigned long r3;
63	unsigned long r4;
64	unsigned long r5;
65	unsigned long r6;
66	unsigned long r7;
67	unsigned long r8;
68	unsigned long r9;
69	unsigned long r10;
70	unsigned long r11;
71	unsigned long r12;
72	unsigned long r13;
73	unsigned long acr;
74	unsigned long srs;
75	unsigned long mof;
76	unsigned long spc;
77	unsigned long ccs;
78	unsigned long srp;
79	unsigned long erp; /* This is actually the debugged process' PC */
80	/* For debugging purposes; saved only when needed. */
81	unsigned long exs;
82	unsigned long eda;
83};
84
85/* switch_stack is the extra stuff pushed onto the stack in _resume (entry.S)
86 * when doing a context-switch. it is used (apart from in resume) when a new
87 * thread is made and we need to make _resume (which is starting it for the
88 * first time) realise what is going on.
89 *
90 * Actually, the use is very close to the thread struct (TSS) in that both the
91 * switch_stack and the TSS are used to keep thread stuff when switching in
92 * _resume.
93 */
94
95struct switch_stack {
96	unsigned long r0;
97	unsigned long r1;
98	unsigned long r2;
99	unsigned long r3;
100	unsigned long r4;
101	unsigned long r5;
102	unsigned long r6;
103	unsigned long r7;
104	unsigned long r8;
105	unsigned long r9;
106	unsigned long return_ip; /* ip that _resume will return to */
107};
108
109#ifdef __KERNEL__
110
111#define arch_has_single_step() (1)
112#define user_mode(regs) (((regs)->ccs & (1 << (U_CCS_BITNR + CCS_SHIFT))) != 0)
113#define instruction_pointer(regs) ((regs)->erp)
114#define profile_pc(regs) instruction_pointer(regs)
115
116#endif  /*  __KERNEL__  */
117
118#endif
119