1#ifndef _UAPI_ASMAXP_PTRACE_H
2#define _UAPI_ASMAXP_PTRACE_H
3
4
5/*
6 * This struct defines the way the registers are stored on the
7 * kernel stack during a system call or other kernel entry
8 *
9 * NOTE! I want to minimize the overhead of system calls, so this
10 * struct has as little information as possible.  I does not have
11 *
12 *  - floating point regs: the kernel doesn't change those
13 *  - r9-15: saved by the C compiler
14 *
15 * This makes "fork()" and "exec()" a bit more complex, but should
16 * give us low system call latency.
17 */
18
19struct pt_regs {
20	unsigned long r0;
21	unsigned long r1;
22	unsigned long r2;
23	unsigned long r3;
24	unsigned long r4;
25	unsigned long r5;
26	unsigned long r6;
27	unsigned long r7;
28	unsigned long r8;
29	unsigned long r19;
30	unsigned long r20;
31	unsigned long r21;
32	unsigned long r22;
33	unsigned long r23;
34	unsigned long r24;
35	unsigned long r25;
36	unsigned long r26;
37	unsigned long r27;
38	unsigned long r28;
39	unsigned long hae;
40/* JRP - These are the values provided to a0-a2 by PALcode */
41	unsigned long trap_a0;
42	unsigned long trap_a1;
43	unsigned long trap_a2;
44/* These are saved by PAL-code: */
45	unsigned long ps;
46	unsigned long pc;
47	unsigned long gp;
48	unsigned long r16;
49	unsigned long r17;
50	unsigned long r18;
51};
52
53/*
54 * This is the extended stack used by signal handlers and the context
55 * switcher: it's pushed after the normal "struct pt_regs".
56 */
57struct switch_stack {
58	unsigned long r9;
59	unsigned long r10;
60	unsigned long r11;
61	unsigned long r12;
62	unsigned long r13;
63	unsigned long r14;
64	unsigned long r15;
65	unsigned long r26;
66	unsigned long fp[32];	/* fp[31] is fpcr */
67};
68
69
70#endif /* _UAPI_ASMAXP_PTRACE_H */
71