1#ifndef _CRIS_ARCH_PTRACE_H
2#define _CRIS_ARCH_PTRACE_H
3
4/* Frame types */
5
6#define CRIS_FRAME_NORMAL   0 /* normal frame without SBFS stacking */
7#define CRIS_FRAME_BUSFAULT 1 /* frame stacked using SBFS, need RBF return
8				 path */
9
10/* Register numbers in the ptrace system call interface */
11
12#define PT_FRAMETYPE 0
13#define PT_ORIG_R10  1
14#define PT_R13       2
15#define PT_R12       3
16#define PT_R11       4
17#define PT_R10       5
18#define PT_R9        6
19#define PT_R8        7
20#define PT_R7        8
21#define PT_R6        9
22#define PT_R5        10
23#define PT_R4        11
24#define PT_R3        12
25#define PT_R2        13
26#define PT_R1        14
27#define PT_R0        15
28#define PT_MOF       16
29#define PT_DCCR      17
30#define PT_SRP       18
31#define PT_IRP       19    /* This is actually the debugged process' PC */
32#define PT_CSRINSTR  20    /* CPU Status record remnants -
33			      valid if frametype == busfault */
34#define PT_CSRADDR   21
35#define PT_CSRDATA   22
36#define PT_USP       23    /* special case - USP is not in the pt_regs */
37#define PT_MAX       23
38
39/* Condition code bit numbers.  The same numbers apply to CCR of course,
40   but we use DCCR everywhere else, so let's try and be consistent.  */
41#define C_DCCR_BITNR 0
42#define V_DCCR_BITNR 1
43#define Z_DCCR_BITNR 2
44#define N_DCCR_BITNR 3
45#define X_DCCR_BITNR 4
46#define I_DCCR_BITNR 5
47#define B_DCCR_BITNR 6
48#define M_DCCR_BITNR 7
49#define U_DCCR_BITNR 8
50#define P_DCCR_BITNR 9
51#define F_DCCR_BITNR 10
52
53/* pt_regs not only specifices the format in the user-struct during
54 * ptrace but is also the frame format used in the kernel prologue/epilogues
55 * themselves
56 */
57
58struct pt_regs {
59	unsigned long frametype;  /* type of stackframe */
60	unsigned long orig_r10;
61	/* pushed by movem r13, [sp] in SAVE_ALL, movem pushes backwards */
62	unsigned long r13;
63	unsigned long r12;
64	unsigned long r11;
65	unsigned long r10;
66	unsigned long r9;
67	unsigned long r8;
68	unsigned long r7;
69	unsigned long r6;
70	unsigned long r5;
71	unsigned long r4;
72	unsigned long r3;
73	unsigned long r2;
74	unsigned long r1;
75	unsigned long r0;
76	unsigned long mof;
77	unsigned long dccr;
78	unsigned long srp;
79	unsigned long irp; /* This is actually the debugged process' PC */
80	unsigned long csrinstr;
81	unsigned long csraddr;
82	unsigned long csrdata;
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 r9;
97	unsigned long r8;
98	unsigned long r7;
99	unsigned long r6;
100	unsigned long r5;
101	unsigned long r4;
102	unsigned long r3;
103	unsigned long r2;
104	unsigned long r1;
105	unsigned long r0;
106	unsigned long return_ip; /* ip that _resume will return to */
107};
108
109/* bit 8 is user-mode flag */
110#define user_mode(regs) (((regs)->dccr & 0x100) != 0)
111#define instruction_pointer(regs) ((regs)->irp)
112#define profile_pc(regs) instruction_pointer(regs)
113extern void show_regs(struct pt_regs *);
114
115#endif
116