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-rw-r--r--arch/powerpc/kernel/ptrace-common.h177
1 files changed, 0 insertions, 177 deletions
diff --git a/arch/powerpc/kernel/ptrace-common.h b/arch/powerpc/kernel/ptrace-common.h
deleted file mode 100644
index 21884535fee6..000000000000
--- a/arch/powerpc/kernel/ptrace-common.h
+++ /dev/null
@@ -1,177 +0,0 @@
1/*
2 * Copyright (c) 2002 Stephen Rothwell, IBM Coproration
3 * Copyright (c) 2007 Benjamin Herrenschmidt, IBM Coproration
4 * Extracted from ptrace.c and ptrace32.c
5 *
6 * This file is subject to the terms and conditions of the GNU General
7 * Public License. See the file README.legal in the main directory of
8 * this archive for more details.
9 */
10
11#ifndef _POWERPC_PTRACE_COMMON_H
12#define _POWERPC_PTRACE_COMMON_H
13
14/*
15 * Get contents of register REGNO in task TASK.
16 */
17static inline unsigned long get_reg(struct task_struct *task, int regno)
18{
19 unsigned long tmp = 0;
20
21 if (task->thread.regs == NULL)
22 return -EIO;
23
24 if (regno == PT_MSR) {
25 tmp = ((unsigned long *)task->thread.regs)[PT_MSR];
26 return PT_MUNGE_MSR(tmp, task);
27 }
28
29 if (regno < (sizeof(struct pt_regs) / sizeof(unsigned long)))
30 return ((unsigned long *)task->thread.regs)[regno];
31
32 return -EIO;
33}
34
35/*
36 * Write contents of register REGNO in task TASK.
37 */
38static inline int put_reg(struct task_struct *task, int regno,
39 unsigned long data)
40{
41 if (task->thread.regs == NULL)
42 return -EIO;
43
44 if (regno <= PT_MAX_PUT_REG) {
45 if (regno == PT_MSR)
46 data = (data & MSR_DEBUGCHANGE)
47 | (task->thread.regs->msr & ~MSR_DEBUGCHANGE);
48 ((unsigned long *)task->thread.regs)[regno] = data;
49 return 0;
50 }
51 return -EIO;
52}
53
54
55static inline int get_fpregs(void __user *data,
56 struct task_struct *task,
57 int has_fpscr)
58{
59 unsigned int count = has_fpscr ? 33 : 32;
60
61 if (copy_to_user(data, task->thread.fpr, count * sizeof(double)))
62 return -EFAULT;
63 return 0;
64}
65
66static inline int set_fpregs(void __user *data,
67 struct task_struct *task,
68 int has_fpscr)
69{
70 unsigned int count = has_fpscr ? 33 : 32;
71
72 if (copy_from_user(task->thread.fpr, data, count * sizeof(double)))
73 return -EFAULT;
74 return 0;
75}
76
77
78#ifdef CONFIG_ALTIVEC
79/*
80 * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go.
81 * The transfer totals 34 quadword. Quadwords 0-31 contain the
82 * corresponding vector registers. Quadword 32 contains the vscr as the
83 * last word (offset 12) within that quadword. Quadword 33 contains the
84 * vrsave as the first word (offset 0) within the quadword.
85 *
86 * This definition of the VMX state is compatible with the current PPC32
87 * ptrace interface. This allows signal handling and ptrace to use the
88 * same structures. This also simplifies the implementation of a bi-arch
89 * (combined (32- and 64-bit) gdb.
90 */
91
92/*
93 * Get contents of AltiVec register state in task TASK
94 */
95static inline int get_vrregs(unsigned long __user *data,
96 struct task_struct *task)
97{
98 unsigned long regsize;
99
100 /* copy AltiVec registers VR[0] .. VR[31] */
101 regsize = 32 * sizeof(vector128);
102 if (copy_to_user(data, task->thread.vr, regsize))
103 return -EFAULT;
104 data += (regsize / sizeof(unsigned long));
105
106 /* copy VSCR */
107 regsize = 1 * sizeof(vector128);
108 if (copy_to_user(data, &task->thread.vscr, regsize))
109 return -EFAULT;
110 data += (regsize / sizeof(unsigned long));
111
112 /* copy VRSAVE */
113 if (put_user(task->thread.vrsave, (u32 __user *)data))
114 return -EFAULT;
115
116 return 0;
117}
118
119/*
120 * Write contents of AltiVec register state into task TASK.
121 */
122static inline int set_vrregs(struct task_struct *task,
123 unsigned long __user *data)
124{
125 unsigned long regsize;
126
127 /* copy AltiVec registers VR[0] .. VR[31] */
128 regsize = 32 * sizeof(vector128);
129 if (copy_from_user(task->thread.vr, data, regsize))
130 return -EFAULT;
131 data += (regsize / sizeof(unsigned long));
132
133 /* copy VSCR */
134 regsize = 1 * sizeof(vector128);
135 if (copy_from_user(&task->thread.vscr, data, regsize))
136 return -EFAULT;
137 data += (regsize / sizeof(unsigned long));
138
139 /* copy VRSAVE */
140 if (get_user(task->thread.vrsave, (u32 __user *)data))
141 return -EFAULT;
142
143 return 0;
144}
145#endif /* CONFIG_ALTIVEC */
146
147static inline void set_single_step(struct task_struct *task)
148{
149 struct pt_regs *regs = task->thread.regs;
150
151 if (regs != NULL) {
152#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
153 task->thread.dbcr0 = DBCR0_IDM | DBCR0_IC;
154 regs->msr |= MSR_DE;
155#else
156 regs->msr |= MSR_SE;
157#endif
158 }
159 set_tsk_thread_flag(task, TIF_SINGLESTEP);
160}
161
162static inline void clear_single_step(struct task_struct *task)
163{
164 struct pt_regs *regs = task->thread.regs;
165
166 if (regs != NULL) {
167#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
168 task->thread.dbcr0 = 0;
169 regs->msr &= ~MSR_DE;
170#else
171 regs->msr &= ~MSR_SE;
172#endif
173 }
174 clear_tsk_thread_flag(task, TIF_SINGLESTEP);
175}
176
177#endif /* _POWERPC_PTRACE_COMMON_H */
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