1#ifndef __ASM_ARM_PTRACE_H
2#define __ASM_ARM_PTRACE_H
3
4#define PTRACE_GETREGS		12
5#define PTRACE_SETREGS		13
6#define PTRACE_GETFPREGS	14
7#define PTRACE_SETFPREGS	15
8#define PTRACE_OLDSETOPTIONS    21
9
10/* options set using PTRACE_SETOPTIONS */
11#define PTRACE_O_TRACESYSGOOD	0x00000001
12
13#define MODE_USR26      0x00000000
14#define MODE_FIQ26      0x00000001
15#define MODE_IRQ26      0x00000002
16#define MODE_SVC26      0x00000003
17#define MODE_MASK       0x00000003
18
19#define PSR_F_BIT       0x04000000
20#define PSR_I_BIT       0x08000000
21#define PSR_V_BIT       0x10000000
22#define PSR_C_BIT       0x20000000
23#define PSR_Z_BIT       0x40000000
24#define PSR_N_BIT       0x80000000
25
26#define PCMASK          0xfc000003
27
28
29#ifndef __ASSEMBLY__
30
31#define pc_pointer(v) ((v) & ~PCMASK)   /* convert v to pc type address */
32#define instruction_pointer(regs) (pc_pointer((regs)->ARM_pc)) /* get pc */
33#define profile_pc(regs) instruction_pointer(regs)
34
35/* this struct defines the way the registers are stored on the
36   stack during a system call. */
37
38struct pt_regs {
39	long uregs[17];
40};
41
42#define ARM_pc		uregs[15]
43#define ARM_lr		uregs[14]
44#define ARM_sp		uregs[13]
45#define ARM_ip		uregs[12]
46#define ARM_fp		uregs[11]
47#define ARM_r10		uregs[10]
48#define ARM_r9		uregs[9]
49#define ARM_r8		uregs[8]
50#define ARM_r7		uregs[7]
51#define ARM_r6		uregs[6]
52#define ARM_r5		uregs[5]
53#define ARM_r4		uregs[4]
54#define ARM_r3		uregs[3]
55#define ARM_r2		uregs[2]
56#define ARM_r1		uregs[1]
57#define ARM_r0		uregs[0]
58#define ARM_ORIG_r0	uregs[16]
59
60#ifdef __KERNEL__
61
62#define processor_mode(regs) \
63	((regs)->ARM_pc & MODE_MASK)
64
65#define user_mode(regs) \
66	(processor_mode(regs) == MODE_USR26)
67
68#define interrupts_enabled(regs) \
69	(!((regs)->ARM_pc & PSR_I_BIT))
70
71#define fast_interrupts_enabled(regs) \
72	(!((regs)->ARM_pc & PSR_F_BIT))
73
74#define condition_codes(regs) \
75	((regs)->ARM_pc & (PSR_V_BIT|PSR_C_BIT|PSR_Z_BIT|PSR_N_BIT))
76
77/* Are the current registers suitable for user mode?
78 * (used to maintain security in signal handlers)
79 */
80static inline int valid_user_regs(struct pt_regs *regs)
81{
82	if (user_mode(regs) &&
83	    (regs->ARM_pc & (PSR_F_BIT | PSR_I_BIT)) == 0)
84		return 1;
85
86	/*
87	 * force it to be something sensible
88	 */
89	regs->ARM_pc &= ~(MODE_MASK | PSR_F_BIT | PSR_I_BIT);
90
91	return 0;
92}
93
94extern void show_regs(struct pt_regs *);
95
96#define predicate(x)    (x & 0xf0000000)
97#define PREDICATE_ALWAYS        0xe0000000
98
99#endif	/* __KERNEL__ */
100
101#endif	/* __ASSEMBLY__ */
102
103#endif
104