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gerrit-public.fairphone.software / kernel / msm-5.4 / e1b28147f684af67bfac989756c27c19859d3d4e / . / arch / sparc / include / asm / ptrace.h
blob: 0c6f6b068289ad4e74f8ea563a6ccd569f6743f5 [file] [log] [blame]
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]1#ifndef __SPARC_PTRACE_H
2#define __SPARC_PTRACE_H
3
David Howells54579822012-10-09 09:47:43 +0100[diff] [blame]4#include <uapi/asm/ptrace.h>
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]5
6#if defined(__sparc__) && defined(__arch64__)
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]7#ifndef __ASSEMBLY__
8
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]9#include <linux/threads.h>
Stephen Rothwell7f55ba92012-03-29 22:39:57 -0700[diff] [blame]10#include <asm/switch_to.h>
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]11
12static inline int pt_regs_trap_type(struct pt_regs *regs)
13{
14 return regs->magic & 0x1ff;
15}
16
17static inline bool pt_regs_is_syscall(struct pt_regs *regs)
18{
19 return (regs->tstate & TSTATE_SYSCALL);
20}
21
22static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
23{
24 return (regs->tstate &= ~TSTATE_SYSCALL);
25}
26
27#define arch_ptrace_stop_needed(exit_code, info) \
28({ flush_user_windows(); \
29 get_thread_wsaved() != 0; \
30})
31
32#define arch_ptrace_stop(exit_code, info) \
33 synchronize_user_stack()
34
35struct global_reg_snapshot {
36 unsigned long tstate;
37 unsigned long tpc;
38 unsigned long tnpc;
39 unsigned long o7;
40 unsigned long i7;
41 unsigned long rpc;
42 struct thread_info *thread;
43 unsigned long pad1;
44};
45extern struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
46
47#define force_successful_syscall_return() \
48do { current_thread_info()->syscall_noerror = 1; \
49} while (0)
50#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
51#define instruction_pointer(regs) ((regs)->tpc)
Jason Wessel33d88812011-07-19 15:43:16 -0500[diff] [blame]52#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]53#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
Eric Parisd7e75282012-01-03 14:23:06 -0500[diff] [blame]54static inline int is_syscall_success(struct pt_regs *regs)
55{
56 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
57}
58
59static inline long regs_return_value(struct pt_regs *regs)
60{
61 return regs->u_regs[UREG_I0];
62}
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]63#ifdef CONFIG_SMP
64extern unsigned long profile_pc(struct pt_regs *);
65#else
66#define profile_pc(regs) instruction_pointer(regs)
Sam Ravnborga439fe52008-07-27 23:00:59 +0200[diff] [blame]67#endif
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]68#else /* __ASSEMBLY__ */
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]69#endif /* __ASSEMBLY__ */
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]70#else /* (defined(__sparc__) && defined(__arch64__)) */
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]71#ifndef __ASSEMBLY__
Sam Ravnborgbde4d8b2012-03-30 15:53:50 +0200[diff] [blame]72#include <asm/switch_to.h>
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]73
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]74static inline bool pt_regs_is_syscall(struct pt_regs *regs)
75{
76 return (regs->psr & PSR_SYSCALL);
77}
78
79static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
80{
81 return (regs->psr &= ~PSR_SYSCALL);
82}
83
84#define arch_ptrace_stop_needed(exit_code, info) \
85({ flush_user_windows(); \
86 current_thread_info()->w_saved != 0; \
87})
88
89#define arch_ptrace_stop(exit_code, info) \
90 synchronize_user_stack()
91
92#define user_mode(regs) (!((regs)->psr & PSR_PS))
93#define instruction_pointer(regs) ((regs)->pc)
94#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
95unsigned long profile_pc(struct pt_regs *);
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]96#else /* (!__ASSEMBLY__) */
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]97#endif /* (!__ASSEMBLY__) */
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]98#endif /* (defined(__sparc__) && defined(__arch64__)) */
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]99#define STACK_BIAS 2047
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]100
101/* global_reg_snapshot offsets */
102#define GR_SNAP_TSTATE 0x00
103#define GR_SNAP_TPC 0x08
104#define GR_SNAP_TNPC 0x10
105#define GR_SNAP_O7 0x18
106#define GR_SNAP_I7 0x20
107#define GR_SNAP_RPC 0x28
108#define GR_SNAP_THREAD 0x30
109#define GR_SNAP_PAD1 0x38
110
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800[diff] [blame]111#endif /* !(__SPARC_PTRACE_H) */