diff options
Diffstat (limited to 'arch/h8300/kernel/ptrace.c')
-rw-r--r-- | arch/h8300/kernel/ptrace.c | 82 |
1 files changed, 7 insertions, 75 deletions
diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c index d32bbf02fc4..df114122ebd 100644 --- a/arch/h8300/kernel/ptrace.c +++ b/arch/h8300/kernel/ptrace.c | |||
@@ -34,25 +34,20 @@ | |||
34 | /* cpu depend functions */ | 34 | /* cpu depend functions */ |
35 | extern long h8300_get_reg(struct task_struct *task, int regno); | 35 | extern long h8300_get_reg(struct task_struct *task, int regno); |
36 | extern int h8300_put_reg(struct task_struct *task, int regno, unsigned long data); | 36 | extern int h8300_put_reg(struct task_struct *task, int regno, unsigned long data); |
37 | extern void h8300_disable_trace(struct task_struct *child); | 37 | |
38 | extern void h8300_enable_trace(struct task_struct *child); | 38 | |
39 | void user_disable_single_step(struct task_struct *child) | ||
40 | { | ||
41 | } | ||
39 | 42 | ||
40 | /* | 43 | /* |
41 | * does not yet catch signals sent when the child dies. | 44 | * does not yet catch signals sent when the child dies. |
42 | * in exit.c or in signal.c. | 45 | * in exit.c or in signal.c. |
43 | */ | 46 | */ |
44 | 47 | ||
45 | inline | ||
46 | static int read_long(struct task_struct * tsk, unsigned long addr, | ||
47 | unsigned long * result) | ||
48 | { | ||
49 | *result = *(unsigned long *)addr; | ||
50 | return 0; | ||
51 | } | ||
52 | |||
53 | void ptrace_disable(struct task_struct *child) | 48 | void ptrace_disable(struct task_struct *child) |
54 | { | 49 | { |
55 | h8300_disable_trace(child); | 50 | user_disable_single_step(child); |
56 | } | 51 | } |
57 | 52 | ||
58 | long arch_ptrace(struct task_struct *child, long request, long addr, long data) | 53 | long arch_ptrace(struct task_struct *child, long request, long addr, long data) |
@@ -60,17 +55,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) | |||
60 | int ret; | 55 | int ret; |
61 | 56 | ||
62 | switch (request) { | 57 | switch (request) { |
63 | case PTRACE_PEEKTEXT: /* read word at location addr. */ | ||
64 | case PTRACE_PEEKDATA: { | ||
65 | unsigned long tmp; | ||
66 | |||
67 | ret = read_long(child, addr, &tmp); | ||
68 | if (ret < 0) | ||
69 | break ; | ||
70 | ret = put_user(tmp, (unsigned long *) data); | ||
71 | break ; | ||
72 | } | ||
73 | |||
74 | /* read the word at location addr in the USER area. */ | 58 | /* read the word at location addr in the USER area. */ |
75 | case PTRACE_PEEKUSR: { | 59 | case PTRACE_PEEKUSR: { |
76 | unsigned long tmp = 0; | 60 | unsigned long tmp = 0; |
@@ -109,11 +93,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) | |||
109 | } | 93 | } |
110 | 94 | ||
111 | /* when I and D space are separate, this will have to be fixed. */ | 95 | /* when I and D space are separate, this will have to be fixed. */ |
112 | case PTRACE_POKETEXT: /* write the word at location addr. */ | ||
113 | case PTRACE_POKEDATA: | ||
114 | ret = generic_ptrace_pokedata(child, addr, data); | ||
115 | break; | ||
116 | |||
117 | case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ | 96 | case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ |
118 | if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) { | 97 | if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) { |
119 | ret = -EIO; | 98 | ret = -EIO; |
@@ -131,53 +110,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) | |||
131 | } | 110 | } |
132 | ret = -EIO; | 111 | ret = -EIO; |
133 | break ; | 112 | break ; |
134 | case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ | ||
135 | case PTRACE_CONT: { /* restart after signal. */ | ||
136 | ret = -EIO; | ||
137 | if (!valid_signal(data)) | ||
138 | break ; | ||
139 | if (request == PTRACE_SYSCALL) | ||
140 | set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); | ||
141 | else | ||
142 | clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); | ||
143 | child->exit_code = data; | ||
144 | wake_up_process(child); | ||
145 | /* make sure the single step bit is not set. */ | ||
146 | h8300_disable_trace(child); | ||
147 | ret = 0; | ||
148 | } | ||
149 | |||
150 | /* | ||
151 | * make the child exit. Best I can do is send it a sigkill. | ||
152 | * perhaps it should be put in the status that it wants to | ||
153 | * exit. | ||
154 | */ | ||
155 | case PTRACE_KILL: { | ||
156 | |||
157 | ret = 0; | ||
158 | if (child->exit_state == EXIT_ZOMBIE) /* already dead */ | ||
159 | break; | ||
160 | child->exit_code = SIGKILL; | ||
161 | h8300_disable_trace(child); | ||
162 | wake_up_process(child); | ||
163 | break; | ||
164 | } | ||
165 | |||
166 | case PTRACE_SINGLESTEP: { /* set the trap flag. */ | ||
167 | ret = -EIO; | ||
168 | if (!valid_signal(data)) | ||
169 | break; | ||
170 | clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); | ||
171 | child->exit_code = data; | ||
172 | h8300_enable_trace(child); | ||
173 | wake_up_process(child); | ||
174 | ret = 0; | ||
175 | break; | ||
176 | } | ||
177 | |||
178 | case PTRACE_DETACH: /* detach a process that was attached. */ | ||
179 | ret = ptrace_detach(child, data); | ||
180 | break; | ||
181 | 113 | ||
182 | case PTRACE_GETREGS: { /* Get all gp regs from the child. */ | 114 | case PTRACE_GETREGS: { /* Get all gp regs from the child. */ |
183 | int i; | 115 | int i; |
@@ -210,7 +142,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) | |||
210 | } | 142 | } |
211 | 143 | ||
212 | default: | 144 | default: |
213 | ret = -EIO; | 145 | ret = ptrace_request(child, request, addr, data); |
214 | break; | 146 | break; |
215 | } | 147 | } |
216 | return ret; | 148 | return ret; |