xref: /openbmc/linux/arch/parisc/include/asm/ptrace.h (revision a09d2831)
1 #ifndef _PARISC_PTRACE_H
2 #define _PARISC_PTRACE_H
3 
4 /* written by Philipp Rumpf, Copyright (C) 1999 SuSE GmbH Nuernberg
5 ** Copyright (C) 2000 Grant Grundler, Hewlett-Packard
6 */
7 
8 #include <linux/types.h>
9 
10 /* This struct defines the way the registers are stored on the
11  * stack during a system call.
12  *
13  * N.B. gdb/strace care about the size and offsets within this
14  * structure. If you change things, you may break object compatibility
15  * for those applications.
16  */
17 
18 struct pt_regs {
19 	unsigned long gr[32];	/* PSW is in gr[0] */
20 	__u64 fr[32];
21 	unsigned long sr[ 8];
22 	unsigned long iasq[2];
23 	unsigned long iaoq[2];
24 	unsigned long cr27;
25 	unsigned long pad0;     /* available for other uses */
26 	unsigned long orig_r28;
27 	unsigned long ksp;
28 	unsigned long kpc;
29 	unsigned long sar;	/* CR11 */
30 	unsigned long iir;	/* CR19 */
31 	unsigned long isr;	/* CR20 */
32 	unsigned long ior;	/* CR21 */
33 	unsigned long ipsw;	/* CR22 */
34 };
35 
36 /*
37  * The numbers chosen here are somewhat arbitrary but absolutely MUST
38  * not overlap with any of the number assigned in <linux/ptrace.h>.
39  *
40  * These ones are taken from IA-64 on the assumption that theirs are
41  * the most correct (and we also want to support PTRACE_SINGLEBLOCK
42  * since we have taken branch traps too)
43  */
44 #define PTRACE_SINGLEBLOCK	12	/* resume execution until next branch */
45 
46 #ifdef __KERNEL__
47 
48 #define task_regs(task) ((struct pt_regs *) ((char *)(task) + TASK_REGS))
49 
50 struct task_struct;
51 #define arch_has_single_step()	1
52 void user_disable_single_step(struct task_struct *task);
53 void user_enable_single_step(struct task_struct *task);
54 
55 #define arch_has_block_step()	1
56 void user_enable_block_step(struct task_struct *task);
57 
58 /* XXX should we use iaoq[1] or iaoq[0] ? */
59 #define user_mode(regs)			(((regs)->iaoq[0] & 3) ? 1 : 0)
60 #define user_space(regs)		(((regs)->iasq[1] != 0) ? 1 : 0)
61 #define instruction_pointer(regs)	((regs)->iaoq[0] & ~3)
62 #define user_stack_pointer(regs)	((regs)->gr[30])
63 unsigned long profile_pc(struct pt_regs *);
64 extern void show_regs(struct pt_regs *);
65 
66 
67 #endif /* __KERNEL__ */
68 
69 #endif
70