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1da177e4 LT |
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 | ||
38 | struct 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 | */ | |
80 | static 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 | ||
94 | extern 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 |