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 
56 struct 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 
95 struct 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 extern void show_regs(struct pt_regs *);
115 #define profile_pc(regs) instruction_pointer(regs)
116 
117 #endif  /*  __KERNEL__  */
118 
119 #endif
120