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authorRoland McGrath <roland@redhat.com>2008-01-30 07:31:02 -0500
committerIngo Molnar <mingo@elte.hu>2008-01-30 07:31:02 -0500
commit25149b62d3e6a3e737af39bd4a0b4e97de0811b7 (patch)
treefc65eb48e7c6254b22f9a5e97056d55ad3c499dc /arch/x86/ia32
parentcbc9d9d98215f08ed998228e7bce88502d1ce360 (diff)
x86: x86 ptrace merge removals
This removes the old separate 64-bit and ia32 ptrace source files. They are no longer used. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/ia32')
-rw-r--r--arch/x86/ia32/ptrace32.c411
1 files changed, 0 insertions, 411 deletions
diff --git a/arch/x86/ia32/ptrace32.c b/arch/x86/ia32/ptrace32.c
deleted file mode 100644
index d5663e295330..000000000000
--- a/arch/x86/ia32/ptrace32.c
+++ /dev/null
@@ -1,411 +0,0 @@
1/*
2 * 32bit ptrace for x86-64.
3 *
4 * Copyright 2001,2002 Andi Kleen, SuSE Labs.
5 * Some parts copied from arch/i386/kernel/ptrace.c. See that file for earlier
6 * copyright.
7 *
8 * This allows to access 64bit processes too; but there is no way to
9 * see the extended register contents.
10 */
11
12#include <linux/kernel.h>
13#include <linux/stddef.h>
14#include <linux/sched.h>
15#include <linux/syscalls.h>
16#include <linux/unistd.h>
17#include <linux/mm.h>
18#include <linux/err.h>
19#include <linux/ptrace.h>
20#include <asm/ptrace.h>
21#include <asm/compat.h>
22#include <asm/uaccess.h>
23#include <asm/user32.h>
24#include <asm/user.h>
25#include <asm/errno.h>
26#include <asm/debugreg.h>
27#include <asm/i387.h>
28#include <asm/fpu32.h>
29#include <asm/ia32.h>
30
31/*
32 * Determines which flags the user has access to [1 = access, 0 = no access].
33 * Prohibits changing ID(21), VIP(20), VIF(19), VM(17), IOPL(12-13), IF(9).
34 * Also masks reserved bits (31-22, 15, 5, 3, 1).
35 */
36#define FLAG_MASK 0x54dd5UL
37
38#define R32(l,q) \
39 case offsetof(struct user32, regs.l): \
40 regs->q = val; break;
41
42static int putreg32(struct task_struct *child, unsigned regno, u32 val)
43{
44 struct pt_regs *regs = task_pt_regs(child);
45
46 switch (regno) {
47 case offsetof(struct user32, regs.fs):
48 if (val && (val & 3) != 3)
49 return -EIO;
50 child->thread.fsindex = val & 0xffff;
51 if (child == current)
52 loadsegment(fs, child->thread.fsindex);
53 break;
54 case offsetof(struct user32, regs.gs):
55 if (val && (val & 3) != 3)
56 return -EIO;
57 child->thread.gsindex = val & 0xffff;
58 if (child == current)
59 load_gs_index(child->thread.gsindex);
60 break;
61 case offsetof(struct user32, regs.ds):
62 if (val && (val & 3) != 3)
63 return -EIO;
64 child->thread.ds = val & 0xffff;
65 if (child == current)
66 loadsegment(ds, child->thread.ds);
67 break;
68 case offsetof(struct user32, regs.es):
69 child->thread.es = val & 0xffff;
70 if (child == current)
71 loadsegment(es, child->thread.ds);
72 break;
73 case offsetof(struct user32, regs.ss):
74 if ((val & 3) != 3)
75 return -EIO;
76 regs->ss = val & 0xffff;
77 break;
78 case offsetof(struct user32, regs.cs):
79 if ((val & 3) != 3)
80 return -EIO;
81 regs->cs = val & 0xffff;
82 break;
83
84 R32(ebx, bx);
85 R32(ecx, cx);
86 R32(edx, dx);
87 R32(edi, di);
88 R32(esi, si);
89 R32(ebp, bp);
90 R32(eax, ax);
91 R32(orig_eax, orig_ax);
92 R32(eip, ip);
93 R32(esp, sp);
94
95 case offsetof(struct user32, regs.eflags):
96 val &= FLAG_MASK;
97 /*
98 * If the user value contains TF, mark that
99 * it was not "us" (the debugger) that set it.
100 * If not, make sure it stays set if we had.
101 */
102 if (val & X86_EFLAGS_TF)
103 clear_tsk_thread_flag(child, TIF_FORCED_TF);
104 else if (test_tsk_thread_flag(child, TIF_FORCED_TF))
105 val |= X86_EFLAGS_TF;
106 regs->flags = val | (regs->flags & ~FLAG_MASK);
107 break;
108
109 case offsetof(struct user32, u_debugreg[0]) ...
110 offsetof(struct user32, u_debugreg[7]):
111 regno -= offsetof(struct user32, u_debugreg[0]);
112 return ptrace_set_debugreg(child, regno / 4, val);
113
114 default:
115 if (regno > sizeof(struct user32) || (regno & 3))
116 return -EIO;
117
118 /*
119 * Other dummy fields in the virtual user structure
120 * are ignored
121 */
122 break;
123 }
124 return 0;
125}
126
127#undef R32
128
129#define R32(l,q) \
130 case offsetof(struct user32, regs.l): \
131 *val = regs->q; break
132
133static int getreg32(struct task_struct *child, unsigned regno, u32 *val)
134{
135 struct pt_regs *regs = task_pt_regs(child);
136
137 switch (regno) {
138 case offsetof(struct user32, regs.fs):
139 *val = child->thread.fsindex;
140 if (child == current)
141 asm("movl %%fs,%0" : "=r" (*val));
142 break;
143 case offsetof(struct user32, regs.gs):
144 *val = child->thread.gsindex;
145 if (child == current)
146 asm("movl %%gs,%0" : "=r" (*val));
147 break;
148 case offsetof(struct user32, regs.ds):
149 *val = child->thread.ds;
150 if (child == current)
151 asm("movl %%ds,%0" : "=r" (*val));
152 break;
153 case offsetof(struct user32, regs.es):
154 *val = child->thread.es;
155 if (child == current)
156 asm("movl %%es,%0" : "=r" (*val));
157 break;
158
159 R32(cs, cs);
160 R32(ss, ss);
161 R32(ebx, bx);
162 R32(ecx, cx);
163 R32(edx, dx);
164 R32(edi, di);
165 R32(esi, si);
166 R32(ebp, bp);
167 R32(eax, ax);
168 R32(orig_eax, orig_ax);
169 R32(eip, ip);
170 R32(esp, sp);
171
172 case offsetof(struct user32, regs.eflags):
173 /*
174 * If the debugger set TF, hide it from the readout.
175 */
176 *val = regs->flags;
177 if (test_tsk_thread_flag(child, TIF_FORCED_TF))
178 *val &= ~X86_EFLAGS_TF;
179 break;
180
181 case offsetof(struct user32, u_debugreg[0]) ...
182 offsetof(struct user32, u_debugreg[7]):
183 regno -= offsetof(struct user32, u_debugreg[0]);
184 *val = ptrace_get_debugreg(child, regno / 4);
185 break;
186
187 default:
188 if (regno > sizeof(struct user32) || (regno & 3))
189 return -EIO;
190
191 /*
192 * Other dummy fields in the virtual user structure
193 * are ignored
194 */
195 *val = 0;
196 break;
197 }
198 return 0;
199}
200
201#undef R32
202
203static long ptrace32_siginfo(unsigned request, u32 pid, u32 addr, u32 data)
204{
205 siginfo_t __user *si = compat_alloc_user_space(sizeof(siginfo_t));
206 compat_siginfo_t __user *si32 = compat_ptr(data);
207 siginfo_t ssi;
208 int ret;
209
210 if (request == PTRACE_SETSIGINFO) {
211 memset(&ssi, 0, sizeof(siginfo_t));
212 ret = copy_siginfo_from_user32(&ssi, si32);
213 if (ret)
214 return ret;
215 if (copy_to_user(si, &ssi, sizeof(siginfo_t)))
216 return -EFAULT;
217 }
218 ret = sys_ptrace(request, pid, addr, (unsigned long)si);
219 if (ret)
220 return ret;
221 if (request == PTRACE_GETSIGINFO) {
222 if (copy_from_user(&ssi, si, sizeof(siginfo_t)))
223 return -EFAULT;
224 ret = copy_siginfo_to_user32(si32, &ssi);
225 }
226 return ret;
227}
228
229asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
230{
231 struct task_struct *child;
232 struct pt_regs *childregs;
233 void __user *datap = compat_ptr(data);
234 int ret;
235 __u32 val;
236
237 switch (request) {
238 case PTRACE_TRACEME:
239 case PTRACE_ATTACH:
240 case PTRACE_KILL:
241 case PTRACE_CONT:
242 case PTRACE_SINGLESTEP:
243 case PTRACE_SINGLEBLOCK:
244 case PTRACE_DETACH:
245 case PTRACE_SYSCALL:
246 case PTRACE_OLDSETOPTIONS:
247 case PTRACE_SETOPTIONS:
248 case PTRACE_SET_THREAD_AREA:
249 case PTRACE_GET_THREAD_AREA:
250 return sys_ptrace(request, pid, addr, data);
251
252 default:
253 return -EINVAL;
254
255 case PTRACE_PEEKTEXT:
256 case PTRACE_PEEKDATA:
257 case PTRACE_POKEDATA:
258 case PTRACE_POKETEXT:
259 case PTRACE_POKEUSR:
260 case PTRACE_PEEKUSR:
261 case PTRACE_GETREGS:
262 case PTRACE_SETREGS:
263 case PTRACE_SETFPREGS:
264 case PTRACE_GETFPREGS:
265 case PTRACE_SETFPXREGS:
266 case PTRACE_GETFPXREGS:
267 case PTRACE_GETEVENTMSG:
268 break;
269
270 case PTRACE_SETSIGINFO:
271 case PTRACE_GETSIGINFO:
272 return ptrace32_siginfo(request, pid, addr, data);
273 }
274
275 child = ptrace_get_task_struct(pid);
276 if (IS_ERR(child))
277 return PTR_ERR(child);
278
279 ret = ptrace_check_attach(child, request == PTRACE_KILL);
280 if (ret < 0)
281 goto out;
282
283 childregs = task_pt_regs(child);
284
285 switch (request) {
286 case PTRACE_PEEKDATA:
287 case PTRACE_PEEKTEXT:
288 ret = 0;
289 if (access_process_vm(child, addr, &val, sizeof(u32), 0) !=
290 sizeof(u32))
291 ret = -EIO;
292 else
293 ret = put_user(val, (unsigned int __user *)datap);
294 break;
295
296 case PTRACE_POKEDATA:
297 case PTRACE_POKETEXT:
298 ret = 0;
299 if (access_process_vm(child, addr, &data, sizeof(u32), 1) !=
300 sizeof(u32))
301 ret = -EIO;
302 break;
303
304 case PTRACE_PEEKUSR:
305 ret = getreg32(child, addr, &val);
306 if (ret == 0)
307 ret = put_user(val, (__u32 __user *)datap);
308 break;
309
310 case PTRACE_POKEUSR:
311 ret = putreg32(child, addr, data);
312 break;
313
314 case PTRACE_GETREGS: { /* Get all gp regs from the child. */
315 int i;
316
317 if (!access_ok(VERIFY_WRITE, datap, 16*4)) {
318 ret = -EIO;
319 break;
320 }
321 ret = 0;
322 for (i = 0; i <= 16*4; i += sizeof(__u32)) {
323 getreg32(child, i, &val);
324 ret |= __put_user(val, (u32 __user *)datap);
325 datap += sizeof(u32);
326 }
327 break;
328 }
329
330 case PTRACE_SETREGS: { /* Set all gp regs in the child. */
331 unsigned long tmp;
332 int i;
333
334 if (!access_ok(VERIFY_READ, datap, 16*4)) {
335 ret = -EIO;
336 break;
337 }
338 ret = 0;
339 for (i = 0; i <= 16*4; i += sizeof(u32)) {
340 ret |= __get_user(tmp, (u32 __user *)datap);
341 putreg32(child, i, tmp);
342 datap += sizeof(u32);
343 }
344 break;
345 }
346
347 case PTRACE_GETFPREGS:
348 ret = -EIO;
349 if (!access_ok(VERIFY_READ, compat_ptr(data),
350 sizeof(struct user_i387_struct)))
351 break;
352 save_i387_ia32(child, datap, childregs, 1);
353 ret = 0;
354 break;
355
356 case PTRACE_SETFPREGS:
357 ret = -EIO;
358 if (!access_ok(VERIFY_WRITE, datap,
359 sizeof(struct user_i387_struct)))
360 break;
361 ret = 0;
362 /* don't check EFAULT to be bug-to-bug compatible to i386 */
363 restore_i387_ia32(child, datap, 1);
364 break;
365
366 case PTRACE_GETFPXREGS: {
367 struct user32_fxsr_struct __user *u = datap;
368
369 init_fpu(child);
370 ret = -EIO;
371 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
372 break;
373 ret = -EFAULT;
374 if (__copy_to_user(u, &child->thread.i387.fxsave, sizeof(*u)))
375 break;
376 ret = __put_user(childregs->cs, &u->fcs);
377 ret |= __put_user(child->thread.ds, &u->fos);
378 break;
379 }
380 case PTRACE_SETFPXREGS: {
381 struct user32_fxsr_struct __user *u = datap;
382
383 unlazy_fpu(child);
384 ret = -EIO;
385 if (!access_ok(VERIFY_READ, u, sizeof(*u)))
386 break;
387 /*
388 * no checking to be bug-to-bug compatible with i386.
389 * but silence warning
390 */
391 if (__copy_from_user(&child->thread.i387.fxsave, u, sizeof(*u)))
392 ;
393 set_stopped_child_used_math(child);
394 child->thread.i387.fxsave.mxcsr &= mxcsr_feature_mask;
395 ret = 0;
396 break;
397 }
398
399 case PTRACE_GETEVENTMSG:
400 ret = put_user(child->ptrace_message,
401 (unsigned int __user *)compat_ptr(data));
402 break;
403
404 default:
405 BUG();
406 }
407
408 out:
409 put_task_struct(child);
410 return ret;
411}
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