Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* ptrace.c: Sparc process tracing support. |
| 2 | * |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 3 | * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 5 | * |
| 6 | * Based upon code written by Ross Biro, Linus Torvalds, Bob Manson, |
| 7 | * and David Mosberger. |
| 8 | * |
| 9 | * Added Linux support -miguel (weird, eh?, the original code was meant |
| 10 | * to emulate SunOS). |
| 11 | */ |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/sched.h> |
| 15 | #include <linux/mm.h> |
| 16 | #include <linux/errno.h> |
| 17 | #include <linux/ptrace.h> |
| 18 | #include <linux/user.h> |
| 19 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/security.h> |
David S. Miller | f7ceba3 | 2005-07-10 19:29:45 -0700 | [diff] [blame] | 21 | #include <linux/seccomp.h> |
| 22 | #include <linux/audit.h> |
Jesper Juhl | 7ed20e1 | 2005-05-01 08:59:14 -0700 | [diff] [blame] | 23 | #include <linux/signal.h> |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 24 | #include <linux/regset.h> |
Roland McGrath | 73ccefa | 2008-07-27 00:30:50 -0700 | [diff] [blame] | 25 | #include <linux/tracehook.h> |
David S. Miller | c658ad1 | 2009-12-11 00:44:47 -0800 | [diff] [blame] | 26 | #include <trace/syscall.h> |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 27 | #include <linux/compat.h> |
| 28 | #include <linux/elf.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | #include <asm/asi.h> |
| 31 | #include <asm/pgtable.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <asm/uaccess.h> |
| 33 | #include <asm/psrcompat.h> |
| 34 | #include <asm/visasm.h> |
| 35 | #include <asm/spitfire.h> |
David S. Miller | 6a9b490 | 2005-09-19 20:11:57 -0700 | [diff] [blame] | 36 | #include <asm/page.h> |
David S. Miller | 717463d | 2005-09-29 18:50:34 -0700 | [diff] [blame] | 37 | #include <asm/cpudata.h> |
David S. Miller | bfdf9eb | 2008-03-26 00:46:21 -0700 | [diff] [blame] | 38 | #include <asm/cacheflush.h> |
| 39 | |
David S. Miller | c658ad1 | 2009-12-11 00:44:47 -0800 | [diff] [blame] | 40 | #define CREATE_TRACE_POINTS |
| 41 | #include <trace/events/syscalls.h> |
| 42 | |
David S. Miller | bfdf9eb | 2008-03-26 00:46:21 -0700 | [diff] [blame] | 43 | #include "entry.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | /* #define ALLOW_INIT_TRACING */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | /* |
| 48 | * Called by kernel/ptrace.c when detaching.. |
| 49 | * |
| 50 | * Make sure single step bits etc are not set. |
| 51 | */ |
| 52 | void ptrace_disable(struct task_struct *child) |
| 53 | { |
| 54 | /* nothing to do */ |
| 55 | } |
| 56 | |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 57 | /* To get the necessary page struct, access_process_vm() first calls |
| 58 | * get_user_pages(). This has done a flush_dcache_page() on the |
| 59 | * accessed page. Then our caller (copy_{to,from}_user_page()) did |
| 60 | * to memcpy to read/write the data from that page. |
| 61 | * |
| 62 | * Now, the only thing we have to do is: |
| 63 | * 1) flush the D-cache if it's possible than an illegal alias |
| 64 | * has been created |
| 65 | * 2) flush the I-cache if this is pre-cheetah and we did a write |
| 66 | */ |
| 67 | void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, |
| 68 | unsigned long uaddr, void *kaddr, |
| 69 | unsigned long len, int write) |
| 70 | { |
| 71 | BUG_ON(len > PAGE_SIZE); |
| 72 | |
David S. Miller | 7adb37f | 2006-02-17 15:07:43 -0800 | [diff] [blame] | 73 | if (tlb_type == hypervisor) |
| 74 | return; |
| 75 | |
David S. Miller | f6a843d | 2008-03-26 04:51:12 -0700 | [diff] [blame] | 76 | preempt_disable(); |
| 77 | |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 78 | #ifdef DCACHE_ALIASING_POSSIBLE |
| 79 | /* If bit 13 of the kernel address we used to access the |
| 80 | * user page is the same as the virtual address that page |
| 81 | * is mapped to in the user's address space, we can skip the |
| 82 | * D-cache flush. |
| 83 | */ |
David S. Miller | 6a9b490 | 2005-09-19 20:11:57 -0700 | [diff] [blame] | 84 | if ((uaddr ^ (unsigned long) kaddr) & (1UL << 13)) { |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 85 | unsigned long start = __pa(kaddr); |
| 86 | unsigned long end = start + len; |
David S. Miller | 717463d | 2005-09-29 18:50:34 -0700 | [diff] [blame] | 87 | unsigned long dcache_line_size; |
| 88 | |
| 89 | dcache_line_size = local_cpu_data().dcache_line_size; |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 90 | |
| 91 | if (tlb_type == spitfire) { |
David S. Miller | 717463d | 2005-09-29 18:50:34 -0700 | [diff] [blame] | 92 | for (; start < end; start += dcache_line_size) |
David S. Miller | 6a9b490 | 2005-09-19 20:11:57 -0700 | [diff] [blame] | 93 | spitfire_put_dcache_tag(start & 0x3fe0, 0x0); |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 94 | } else { |
David S. Miller | 717463d | 2005-09-29 18:50:34 -0700 | [diff] [blame] | 95 | start &= ~(dcache_line_size - 1); |
| 96 | for (; start < end; start += dcache_line_size) |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 97 | __asm__ __volatile__( |
| 98 | "stxa %%g0, [%0] %1\n\t" |
| 99 | "membar #Sync" |
| 100 | : /* no outputs */ |
David S. Miller | 6a9b490 | 2005-09-19 20:11:57 -0700 | [diff] [blame] | 101 | : "r" (start), |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 102 | "i" (ASI_DCACHE_INVALIDATE)); |
| 103 | } |
| 104 | } |
| 105 | #endif |
| 106 | if (write && tlb_type == spitfire) { |
| 107 | unsigned long start = (unsigned long) kaddr; |
| 108 | unsigned long end = start + len; |
David S. Miller | 717463d | 2005-09-29 18:50:34 -0700 | [diff] [blame] | 109 | unsigned long icache_line_size; |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 110 | |
David S. Miller | 717463d | 2005-09-29 18:50:34 -0700 | [diff] [blame] | 111 | icache_line_size = local_cpu_data().icache_line_size; |
| 112 | |
| 113 | for (; start < end; start += icache_line_size) |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 114 | flushi(start); |
| 115 | } |
David S. Miller | f6a843d | 2008-03-26 04:51:12 -0700 | [diff] [blame] | 116 | |
| 117 | preempt_enable(); |
David S. Miller | dadeafd | 2005-04-17 18:03:11 -0700 | [diff] [blame] | 118 | } |
| 119 | |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 120 | static int get_from_target(struct task_struct *target, unsigned long uaddr, |
| 121 | void *kbuf, int len) |
| 122 | { |
| 123 | if (target == current) { |
| 124 | if (copy_from_user(kbuf, (void __user *) uaddr, len)) |
| 125 | return -EFAULT; |
| 126 | } else { |
| 127 | int len2 = access_process_vm(target, uaddr, kbuf, len, 0); |
| 128 | if (len2 != len) |
| 129 | return -EFAULT; |
| 130 | } |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | static int set_to_target(struct task_struct *target, unsigned long uaddr, |
| 135 | void *kbuf, int len) |
| 136 | { |
| 137 | if (target == current) { |
| 138 | if (copy_to_user((void __user *) uaddr, kbuf, len)) |
| 139 | return -EFAULT; |
| 140 | } else { |
| 141 | int len2 = access_process_vm(target, uaddr, kbuf, len, 1); |
| 142 | if (len2 != len) |
| 143 | return -EFAULT; |
| 144 | } |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | static int regwindow64_get(struct task_struct *target, |
| 149 | const struct pt_regs *regs, |
| 150 | struct reg_window *wbuf) |
| 151 | { |
| 152 | unsigned long rw_addr = regs->u_regs[UREG_I6]; |
| 153 | |
| 154 | if (test_tsk_thread_flag(current, TIF_32BIT)) { |
| 155 | struct reg_window32 win32; |
| 156 | int i; |
| 157 | |
| 158 | if (get_from_target(target, rw_addr, &win32, sizeof(win32))) |
| 159 | return -EFAULT; |
| 160 | for (i = 0; i < 8; i++) |
| 161 | wbuf->locals[i] = win32.locals[i]; |
| 162 | for (i = 0; i < 8; i++) |
| 163 | wbuf->ins[i] = win32.ins[i]; |
| 164 | } else { |
| 165 | rw_addr += STACK_BIAS; |
| 166 | if (get_from_target(target, rw_addr, wbuf, sizeof(*wbuf))) |
| 167 | return -EFAULT; |
| 168 | } |
| 169 | |
| 170 | return 0; |
| 171 | } |
| 172 | |
| 173 | static int regwindow64_set(struct task_struct *target, |
| 174 | const struct pt_regs *regs, |
| 175 | struct reg_window *wbuf) |
| 176 | { |
| 177 | unsigned long rw_addr = regs->u_regs[UREG_I6]; |
| 178 | |
| 179 | if (test_tsk_thread_flag(current, TIF_32BIT)) { |
| 180 | struct reg_window32 win32; |
| 181 | int i; |
| 182 | |
| 183 | for (i = 0; i < 8; i++) |
| 184 | win32.locals[i] = wbuf->locals[i]; |
| 185 | for (i = 0; i < 8; i++) |
| 186 | win32.ins[i] = wbuf->ins[i]; |
| 187 | |
| 188 | if (set_to_target(target, rw_addr, &win32, sizeof(win32))) |
| 189 | return -EFAULT; |
| 190 | } else { |
| 191 | rw_addr += STACK_BIAS; |
| 192 | if (set_to_target(target, rw_addr, wbuf, sizeof(*wbuf))) |
| 193 | return -EFAULT; |
| 194 | } |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 199 | enum sparc_regset { |
| 200 | REGSET_GENERAL, |
| 201 | REGSET_FP, |
| 202 | }; |
| 203 | |
| 204 | static int genregs64_get(struct task_struct *target, |
| 205 | const struct user_regset *regset, |
| 206 | unsigned int pos, unsigned int count, |
| 207 | void *kbuf, void __user *ubuf) |
| 208 | { |
| 209 | const struct pt_regs *regs = task_pt_regs(target); |
| 210 | int ret; |
| 211 | |
| 212 | if (target == current) |
| 213 | flushw_user(); |
| 214 | |
| 215 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 216 | regs->u_regs, |
| 217 | 0, 16 * sizeof(u64)); |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 218 | if (!ret && count && pos < (32 * sizeof(u64))) { |
| 219 | struct reg_window window; |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 220 | |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 221 | if (regwindow64_get(target, regs, &window)) |
| 222 | return -EFAULT; |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 223 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 224 | &window, |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 225 | 16 * sizeof(u64), |
| 226 | 32 * sizeof(u64)); |
| 227 | } |
| 228 | |
| 229 | if (!ret) { |
| 230 | /* TSTATE, TPC, TNPC */ |
| 231 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 232 | ®s->tstate, |
| 233 | 32 * sizeof(u64), |
| 234 | 35 * sizeof(u64)); |
| 235 | } |
| 236 | |
| 237 | if (!ret) { |
| 238 | unsigned long y = regs->y; |
| 239 | |
| 240 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 241 | &y, |
| 242 | 35 * sizeof(u64), |
| 243 | 36 * sizeof(u64)); |
| 244 | } |
| 245 | |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 246 | if (!ret) { |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 247 | ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, |
| 248 | 36 * sizeof(u64), -1); |
| 249 | |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 250 | } |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 251 | return ret; |
| 252 | } |
| 253 | |
| 254 | static int genregs64_set(struct task_struct *target, |
| 255 | const struct user_regset *regset, |
| 256 | unsigned int pos, unsigned int count, |
| 257 | const void *kbuf, const void __user *ubuf) |
| 258 | { |
| 259 | struct pt_regs *regs = task_pt_regs(target); |
| 260 | int ret; |
| 261 | |
| 262 | if (target == current) |
| 263 | flushw_user(); |
| 264 | |
| 265 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 266 | regs->u_regs, |
| 267 | 0, 16 * sizeof(u64)); |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 268 | if (!ret && count && pos < (32 * sizeof(u64))) { |
| 269 | struct reg_window window; |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 270 | |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 271 | if (regwindow64_get(target, regs, &window)) |
| 272 | return -EFAULT; |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 273 | |
| 274 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 275 | &window, |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 276 | 16 * sizeof(u64), |
| 277 | 32 * sizeof(u64)); |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 278 | |
| 279 | if (!ret && |
| 280 | regwindow64_set(target, regs, &window)) |
| 281 | return -EFAULT; |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | if (!ret && count > 0) { |
| 285 | unsigned long tstate; |
| 286 | |
| 287 | /* TSTATE */ |
| 288 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 289 | &tstate, |
| 290 | 32 * sizeof(u64), |
| 291 | 33 * sizeof(u64)); |
| 292 | if (!ret) { |
David S. Miller | 28e6103 | 2008-05-11 02:07:19 -0700 | [diff] [blame] | 293 | /* Only the condition codes and the "in syscall" |
| 294 | * state can be modified in the %tstate register. |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 295 | */ |
David S. Miller | 28e6103 | 2008-05-11 02:07:19 -0700 | [diff] [blame] | 296 | tstate &= (TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL); |
| 297 | regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL); |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 298 | regs->tstate |= tstate; |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | if (!ret) { |
| 303 | /* TPC, TNPC */ |
| 304 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 305 | ®s->tpc, |
| 306 | 33 * sizeof(u64), |
| 307 | 35 * sizeof(u64)); |
| 308 | } |
| 309 | |
| 310 | if (!ret) { |
| 311 | unsigned long y; |
| 312 | |
| 313 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 314 | &y, |
| 315 | 35 * sizeof(u64), |
| 316 | 36 * sizeof(u64)); |
| 317 | if (!ret) |
| 318 | regs->y = y; |
| 319 | } |
| 320 | |
| 321 | if (!ret) |
| 322 | ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, |
| 323 | 36 * sizeof(u64), -1); |
| 324 | |
| 325 | return ret; |
| 326 | } |
| 327 | |
| 328 | static int fpregs64_get(struct task_struct *target, |
| 329 | const struct user_regset *regset, |
| 330 | unsigned int pos, unsigned int count, |
| 331 | void *kbuf, void __user *ubuf) |
| 332 | { |
| 333 | const unsigned long *fpregs = task_thread_info(target)->fpregs; |
| 334 | unsigned long fprs, fsr, gsr; |
| 335 | int ret; |
| 336 | |
| 337 | if (target == current) |
| 338 | save_and_clear_fpu(); |
| 339 | |
| 340 | fprs = task_thread_info(target)->fpsaved[0]; |
| 341 | |
| 342 | if (fprs & FPRS_DL) |
| 343 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 344 | fpregs, |
| 345 | 0, 16 * sizeof(u64)); |
| 346 | else |
| 347 | ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, |
| 348 | 0, |
| 349 | 16 * sizeof(u64)); |
| 350 | |
| 351 | if (!ret) { |
| 352 | if (fprs & FPRS_DU) |
| 353 | ret = user_regset_copyout(&pos, &count, |
| 354 | &kbuf, &ubuf, |
| 355 | fpregs + 16, |
| 356 | 16 * sizeof(u64), |
| 357 | 32 * sizeof(u64)); |
| 358 | else |
| 359 | ret = user_regset_copyout_zero(&pos, &count, |
| 360 | &kbuf, &ubuf, |
| 361 | 16 * sizeof(u64), |
| 362 | 32 * sizeof(u64)); |
| 363 | } |
| 364 | |
| 365 | if (fprs & FPRS_FEF) { |
| 366 | fsr = task_thread_info(target)->xfsr[0]; |
| 367 | gsr = task_thread_info(target)->gsr[0]; |
| 368 | } else { |
| 369 | fsr = gsr = 0; |
| 370 | } |
| 371 | |
| 372 | if (!ret) |
| 373 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 374 | &fsr, |
| 375 | 32 * sizeof(u64), |
| 376 | 33 * sizeof(u64)); |
| 377 | if (!ret) |
| 378 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 379 | &gsr, |
| 380 | 33 * sizeof(u64), |
| 381 | 34 * sizeof(u64)); |
| 382 | if (!ret) |
| 383 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 384 | &fprs, |
| 385 | 34 * sizeof(u64), |
| 386 | 35 * sizeof(u64)); |
| 387 | |
| 388 | if (!ret) |
| 389 | ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, |
| 390 | 35 * sizeof(u64), -1); |
| 391 | |
| 392 | return ret; |
| 393 | } |
| 394 | |
| 395 | static int fpregs64_set(struct task_struct *target, |
| 396 | const struct user_regset *regset, |
| 397 | unsigned int pos, unsigned int count, |
| 398 | const void *kbuf, const void __user *ubuf) |
| 399 | { |
| 400 | unsigned long *fpregs = task_thread_info(target)->fpregs; |
| 401 | unsigned long fprs; |
| 402 | int ret; |
| 403 | |
| 404 | if (target == current) |
| 405 | save_and_clear_fpu(); |
| 406 | |
| 407 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 408 | fpregs, |
| 409 | 0, 32 * sizeof(u64)); |
| 410 | if (!ret) |
| 411 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 412 | task_thread_info(target)->xfsr, |
| 413 | 32 * sizeof(u64), |
| 414 | 33 * sizeof(u64)); |
| 415 | if (!ret) |
| 416 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 417 | task_thread_info(target)->gsr, |
| 418 | 33 * sizeof(u64), |
| 419 | 34 * sizeof(u64)); |
| 420 | |
| 421 | fprs = task_thread_info(target)->fpsaved[0]; |
| 422 | if (!ret && count > 0) { |
| 423 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 424 | &fprs, |
| 425 | 34 * sizeof(u64), |
| 426 | 35 * sizeof(u64)); |
| 427 | } |
| 428 | |
| 429 | fprs |= (FPRS_FEF | FPRS_DL | FPRS_DU); |
| 430 | task_thread_info(target)->fpsaved[0] = fprs; |
| 431 | |
| 432 | if (!ret) |
| 433 | ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, |
| 434 | 35 * sizeof(u64), -1); |
| 435 | return ret; |
| 436 | } |
| 437 | |
| 438 | static const struct user_regset sparc64_regsets[] = { |
| 439 | /* Format is: |
| 440 | * G0 --> G7 |
| 441 | * O0 --> O7 |
| 442 | * L0 --> L7 |
| 443 | * I0 --> I7 |
| 444 | * TSTATE, TPC, TNPC, Y |
| 445 | */ |
| 446 | [REGSET_GENERAL] = { |
| 447 | .core_note_type = NT_PRSTATUS, |
David S. Miller | 3c50370 | 2008-09-12 15:01:31 -0700 | [diff] [blame] | 448 | .n = 36, |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 449 | .size = sizeof(u64), .align = sizeof(u64), |
| 450 | .get = genregs64_get, .set = genregs64_set |
| 451 | }, |
| 452 | /* Format is: |
| 453 | * F0 --> F63 |
| 454 | * FSR |
| 455 | * GSR |
| 456 | * FPRS |
| 457 | */ |
| 458 | [REGSET_FP] = { |
| 459 | .core_note_type = NT_PRFPREG, |
David S. Miller | 3c50370 | 2008-09-12 15:01:31 -0700 | [diff] [blame] | 460 | .n = 35, |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 461 | .size = sizeof(u64), .align = sizeof(u64), |
| 462 | .get = fpregs64_get, .set = fpregs64_set |
| 463 | }, |
| 464 | }; |
| 465 | |
| 466 | static const struct user_regset_view user_sparc64_view = { |
| 467 | .name = "sparc64", .e_machine = EM_SPARCV9, |
| 468 | .regsets = sparc64_regsets, .n = ARRAY_SIZE(sparc64_regsets) |
| 469 | }; |
| 470 | |
David S. Miller | 11cc8a3 | 2008-03-26 04:31:50 -0700 | [diff] [blame] | 471 | #ifdef CONFIG_COMPAT |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 472 | static int genregs32_get(struct task_struct *target, |
| 473 | const struct user_regset *regset, |
| 474 | unsigned int pos, unsigned int count, |
| 475 | void *kbuf, void __user *ubuf) |
| 476 | { |
| 477 | const struct pt_regs *regs = task_pt_regs(target); |
| 478 | compat_ulong_t __user *reg_window; |
| 479 | compat_ulong_t *k = kbuf; |
| 480 | compat_ulong_t __user *u = ubuf; |
| 481 | compat_ulong_t reg; |
| 482 | |
| 483 | if (target == current) |
| 484 | flushw_user(); |
| 485 | |
| 486 | pos /= sizeof(reg); |
| 487 | count /= sizeof(reg); |
| 488 | |
| 489 | if (kbuf) { |
| 490 | for (; count > 0 && pos < 16; count--) |
| 491 | *k++ = regs->u_regs[pos++]; |
| 492 | |
| 493 | reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6]; |
David S. Miller | b857bd2 | 2010-03-31 18:05:05 -0700 | [diff] [blame] | 494 | reg_window -= 16; |
David S. Miller | ad4f957 | 2008-04-03 16:55:14 -0700 | [diff] [blame] | 495 | if (target == current) { |
| 496 | for (; count > 0 && pos < 32; count--) { |
| 497 | if (get_user(*k++, ®_window[pos++])) |
| 498 | return -EFAULT; |
| 499 | } |
| 500 | } else { |
| 501 | for (; count > 0 && pos < 32; count--) { |
| 502 | if (access_process_vm(target, |
| 503 | (unsigned long) |
| 504 | ®_window[pos], |
| 505 | k, sizeof(*k), 0) |
| 506 | != sizeof(*k)) |
| 507 | return -EFAULT; |
| 508 | k++; |
| 509 | pos++; |
| 510 | } |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 511 | } |
| 512 | } else { |
| 513 | for (; count > 0 && pos < 16; count--) { |
| 514 | if (put_user((compat_ulong_t) regs->u_regs[pos++], u++)) |
| 515 | return -EFAULT; |
| 516 | } |
| 517 | |
| 518 | reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6]; |
David S. Miller | b857bd2 | 2010-03-31 18:05:05 -0700 | [diff] [blame] | 519 | reg_window -= 16; |
David S. Miller | ad4f957 | 2008-04-03 16:55:14 -0700 | [diff] [blame] | 520 | if (target == current) { |
| 521 | for (; count > 0 && pos < 32; count--) { |
| 522 | if (get_user(reg, ®_window[pos++]) || |
| 523 | put_user(reg, u++)) |
| 524 | return -EFAULT; |
| 525 | } |
| 526 | } else { |
| 527 | for (; count > 0 && pos < 32; count--) { |
| 528 | if (access_process_vm(target, |
| 529 | (unsigned long) |
| 530 | ®_window[pos], |
| 531 | ®, sizeof(reg), 0) |
| 532 | != sizeof(reg)) |
| 533 | return -EFAULT; |
| 534 | if (access_process_vm(target, |
| 535 | (unsigned long) u, |
| 536 | ®, sizeof(reg), 1) |
| 537 | != sizeof(reg)) |
| 538 | return -EFAULT; |
| 539 | pos++; |
| 540 | u++; |
| 541 | } |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 542 | } |
| 543 | } |
| 544 | while (count > 0) { |
| 545 | switch (pos) { |
| 546 | case 32: /* PSR */ |
| 547 | reg = tstate_to_psr(regs->tstate); |
| 548 | break; |
| 549 | case 33: /* PC */ |
| 550 | reg = regs->tpc; |
| 551 | break; |
| 552 | case 34: /* NPC */ |
| 553 | reg = regs->tnpc; |
| 554 | break; |
| 555 | case 35: /* Y */ |
| 556 | reg = regs->y; |
| 557 | break; |
| 558 | case 36: /* WIM */ |
| 559 | case 37: /* TBR */ |
| 560 | reg = 0; |
| 561 | break; |
| 562 | default: |
| 563 | goto finish; |
| 564 | } |
| 565 | |
| 566 | if (kbuf) |
| 567 | *k++ = reg; |
| 568 | else if (put_user(reg, u++)) |
| 569 | return -EFAULT; |
| 570 | pos++; |
| 571 | count--; |
| 572 | } |
| 573 | finish: |
| 574 | pos *= sizeof(reg); |
| 575 | count *= sizeof(reg); |
| 576 | |
| 577 | return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, |
| 578 | 38 * sizeof(reg), -1); |
| 579 | } |
| 580 | |
| 581 | static int genregs32_set(struct task_struct *target, |
| 582 | const struct user_regset *regset, |
| 583 | unsigned int pos, unsigned int count, |
| 584 | const void *kbuf, const void __user *ubuf) |
| 585 | { |
| 586 | struct pt_regs *regs = task_pt_regs(target); |
| 587 | compat_ulong_t __user *reg_window; |
| 588 | const compat_ulong_t *k = kbuf; |
| 589 | const compat_ulong_t __user *u = ubuf; |
| 590 | compat_ulong_t reg; |
| 591 | |
| 592 | if (target == current) |
| 593 | flushw_user(); |
| 594 | |
| 595 | pos /= sizeof(reg); |
| 596 | count /= sizeof(reg); |
| 597 | |
| 598 | if (kbuf) { |
| 599 | for (; count > 0 && pos < 16; count--) |
| 600 | regs->u_regs[pos++] = *k++; |
| 601 | |
| 602 | reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6]; |
David S. Miller | b857bd2 | 2010-03-31 18:05:05 -0700 | [diff] [blame] | 603 | reg_window -= 16; |
David S. Miller | ad4f957 | 2008-04-03 16:55:14 -0700 | [diff] [blame] | 604 | if (target == current) { |
| 605 | for (; count > 0 && pos < 32; count--) { |
| 606 | if (put_user(*k++, ®_window[pos++])) |
| 607 | return -EFAULT; |
| 608 | } |
| 609 | } else { |
| 610 | for (; count > 0 && pos < 32; count--) { |
| 611 | if (access_process_vm(target, |
| 612 | (unsigned long) |
| 613 | ®_window[pos], |
| 614 | (void *) k, |
| 615 | sizeof(*k), 1) |
| 616 | != sizeof(*k)) |
| 617 | return -EFAULT; |
| 618 | k++; |
| 619 | pos++; |
| 620 | } |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 621 | } |
| 622 | } else { |
| 623 | for (; count > 0 && pos < 16; count--) { |
| 624 | if (get_user(reg, u++)) |
| 625 | return -EFAULT; |
| 626 | regs->u_regs[pos++] = reg; |
| 627 | } |
| 628 | |
| 629 | reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6]; |
David S. Miller | b857bd2 | 2010-03-31 18:05:05 -0700 | [diff] [blame] | 630 | reg_window -= 16; |
David S. Miller | ad4f957 | 2008-04-03 16:55:14 -0700 | [diff] [blame] | 631 | if (target == current) { |
| 632 | for (; count > 0 && pos < 32; count--) { |
| 633 | if (get_user(reg, u++) || |
| 634 | put_user(reg, ®_window[pos++])) |
| 635 | return -EFAULT; |
| 636 | } |
| 637 | } else { |
| 638 | for (; count > 0 && pos < 32; count--) { |
| 639 | if (access_process_vm(target, |
| 640 | (unsigned long) |
| 641 | u, |
| 642 | ®, sizeof(reg), 0) |
| 643 | != sizeof(reg)) |
| 644 | return -EFAULT; |
| 645 | if (access_process_vm(target, |
| 646 | (unsigned long) |
| 647 | ®_window[pos], |
| 648 | ®, sizeof(reg), 1) |
| 649 | != sizeof(reg)) |
| 650 | return -EFAULT; |
| 651 | pos++; |
| 652 | u++; |
| 653 | } |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 654 | } |
| 655 | } |
| 656 | while (count > 0) { |
| 657 | unsigned long tstate; |
| 658 | |
| 659 | if (kbuf) |
| 660 | reg = *k++; |
| 661 | else if (get_user(reg, u++)) |
| 662 | return -EFAULT; |
| 663 | |
| 664 | switch (pos) { |
| 665 | case 32: /* PSR */ |
| 666 | tstate = regs->tstate; |
David S. Miller | 28e6103 | 2008-05-11 02:07:19 -0700 | [diff] [blame] | 667 | tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL); |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 668 | tstate |= psr_to_tstate_icc(reg); |
David S. Miller | 28e6103 | 2008-05-11 02:07:19 -0700 | [diff] [blame] | 669 | if (reg & PSR_SYSCALL) |
| 670 | tstate |= TSTATE_SYSCALL; |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 671 | regs->tstate = tstate; |
| 672 | break; |
| 673 | case 33: /* PC */ |
| 674 | regs->tpc = reg; |
| 675 | break; |
| 676 | case 34: /* NPC */ |
| 677 | regs->tnpc = reg; |
| 678 | break; |
| 679 | case 35: /* Y */ |
| 680 | regs->y = reg; |
| 681 | break; |
| 682 | case 36: /* WIM */ |
| 683 | case 37: /* TBR */ |
| 684 | break; |
| 685 | default: |
| 686 | goto finish; |
| 687 | } |
| 688 | |
| 689 | pos++; |
| 690 | count--; |
| 691 | } |
| 692 | finish: |
| 693 | pos *= sizeof(reg); |
| 694 | count *= sizeof(reg); |
| 695 | |
| 696 | return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, |
| 697 | 38 * sizeof(reg), -1); |
| 698 | } |
| 699 | |
| 700 | static int fpregs32_get(struct task_struct *target, |
| 701 | const struct user_regset *regset, |
| 702 | unsigned int pos, unsigned int count, |
| 703 | void *kbuf, void __user *ubuf) |
| 704 | { |
| 705 | const unsigned long *fpregs = task_thread_info(target)->fpregs; |
| 706 | compat_ulong_t enabled; |
| 707 | unsigned long fprs; |
| 708 | compat_ulong_t fsr; |
| 709 | int ret = 0; |
| 710 | |
| 711 | if (target == current) |
| 712 | save_and_clear_fpu(); |
| 713 | |
| 714 | fprs = task_thread_info(target)->fpsaved[0]; |
| 715 | if (fprs & FPRS_FEF) { |
| 716 | fsr = task_thread_info(target)->xfsr[0]; |
| 717 | enabled = 1; |
| 718 | } else { |
| 719 | fsr = 0; |
| 720 | enabled = 0; |
| 721 | } |
| 722 | |
| 723 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 724 | fpregs, |
| 725 | 0, 32 * sizeof(u32)); |
| 726 | |
| 727 | if (!ret) |
| 728 | ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, |
| 729 | 32 * sizeof(u32), |
| 730 | 33 * sizeof(u32)); |
| 731 | if (!ret) |
| 732 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 733 | &fsr, |
| 734 | 33 * sizeof(u32), |
| 735 | 34 * sizeof(u32)); |
| 736 | |
| 737 | if (!ret) { |
| 738 | compat_ulong_t val; |
| 739 | |
| 740 | val = (enabled << 8) | (8 << 16); |
| 741 | ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, |
| 742 | &val, |
| 743 | 34 * sizeof(u32), |
| 744 | 35 * sizeof(u32)); |
| 745 | } |
| 746 | |
| 747 | if (!ret) |
| 748 | ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, |
| 749 | 35 * sizeof(u32), -1); |
| 750 | |
| 751 | return ret; |
| 752 | } |
| 753 | |
| 754 | static int fpregs32_set(struct task_struct *target, |
| 755 | const struct user_regset *regset, |
| 756 | unsigned int pos, unsigned int count, |
| 757 | const void *kbuf, const void __user *ubuf) |
| 758 | { |
| 759 | unsigned long *fpregs = task_thread_info(target)->fpregs; |
| 760 | unsigned long fprs; |
| 761 | int ret; |
| 762 | |
| 763 | if (target == current) |
| 764 | save_and_clear_fpu(); |
| 765 | |
| 766 | fprs = task_thread_info(target)->fpsaved[0]; |
| 767 | |
| 768 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 769 | fpregs, |
| 770 | 0, 32 * sizeof(u32)); |
| 771 | if (!ret) |
| 772 | user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, |
| 773 | 32 * sizeof(u32), |
| 774 | 33 * sizeof(u32)); |
| 775 | if (!ret && count > 0) { |
| 776 | compat_ulong_t fsr; |
| 777 | unsigned long val; |
| 778 | |
| 779 | ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |
| 780 | &fsr, |
| 781 | 33 * sizeof(u32), |
| 782 | 34 * sizeof(u32)); |
| 783 | if (!ret) { |
| 784 | val = task_thread_info(target)->xfsr[0]; |
| 785 | val &= 0xffffffff00000000UL; |
| 786 | val |= fsr; |
| 787 | task_thread_info(target)->xfsr[0] = val; |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | fprs |= (FPRS_FEF | FPRS_DL); |
| 792 | task_thread_info(target)->fpsaved[0] = fprs; |
| 793 | |
| 794 | if (!ret) |
| 795 | ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, |
| 796 | 34 * sizeof(u32), -1); |
| 797 | return ret; |
| 798 | } |
| 799 | |
| 800 | static const struct user_regset sparc32_regsets[] = { |
| 801 | /* Format is: |
| 802 | * G0 --> G7 |
| 803 | * O0 --> O7 |
| 804 | * L0 --> L7 |
| 805 | * I0 --> I7 |
| 806 | * PSR, PC, nPC, Y, WIM, TBR |
| 807 | */ |
| 808 | [REGSET_GENERAL] = { |
| 809 | .core_note_type = NT_PRSTATUS, |
David S. Miller | 3c50370 | 2008-09-12 15:01:31 -0700 | [diff] [blame] | 810 | .n = 38, |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 811 | .size = sizeof(u32), .align = sizeof(u32), |
| 812 | .get = genregs32_get, .set = genregs32_set |
| 813 | }, |
| 814 | /* Format is: |
| 815 | * F0 --> F31 |
| 816 | * empty 32-bit word |
| 817 | * FSR (32--bit word) |
| 818 | * FPU QUEUE COUNT (8-bit char) |
| 819 | * FPU QUEUE ENTRYSIZE (8-bit char) |
| 820 | * FPU ENABLED (8-bit char) |
| 821 | * empty 8-bit char |
| 822 | * FPU QUEUE (64 32-bit ints) |
| 823 | */ |
| 824 | [REGSET_FP] = { |
| 825 | .core_note_type = NT_PRFPREG, |
David S. Miller | 3c50370 | 2008-09-12 15:01:31 -0700 | [diff] [blame] | 826 | .n = 99, |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 827 | .size = sizeof(u32), .align = sizeof(u32), |
| 828 | .get = fpregs32_get, .set = fpregs32_set |
| 829 | }, |
| 830 | }; |
| 831 | |
| 832 | static const struct user_regset_view user_sparc32_view = { |
| 833 | .name = "sparc", .e_machine = EM_SPARC, |
| 834 | .regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets) |
| 835 | }; |
David S. Miller | 11cc8a3 | 2008-03-26 04:31:50 -0700 | [diff] [blame] | 836 | #endif /* CONFIG_COMPAT */ |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 837 | |
| 838 | const struct user_regset_view *task_user_regset_view(struct task_struct *task) |
| 839 | { |
David S. Miller | 11cc8a3 | 2008-03-26 04:31:50 -0700 | [diff] [blame] | 840 | #ifdef CONFIG_COMPAT |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 841 | if (test_tsk_thread_flag(task, TIF_32BIT)) |
| 842 | return &user_sparc32_view; |
David S. Miller | 11cc8a3 | 2008-03-26 04:31:50 -0700 | [diff] [blame] | 843 | #endif |
David S. Miller | d09c2a2 | 2008-02-06 23:02:08 -0800 | [diff] [blame] | 844 | return &user_sparc64_view; |
| 845 | } |
| 846 | |
David S. Miller | 11cc8a3 | 2008-03-26 04:31:50 -0700 | [diff] [blame] | 847 | #ifdef CONFIG_COMPAT |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 848 | struct compat_fps { |
| 849 | unsigned int regs[32]; |
| 850 | unsigned int fsr; |
| 851 | unsigned int flags; |
| 852 | unsigned int extra; |
| 853 | unsigned int fpqd; |
| 854 | struct compat_fq { |
| 855 | unsigned int insnaddr; |
| 856 | unsigned int insn; |
| 857 | } fpq[16]; |
| 858 | }; |
| 859 | |
| 860 | long compat_arch_ptrace(struct task_struct *child, compat_long_t request, |
| 861 | compat_ulong_t caddr, compat_ulong_t cdata) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | { |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 863 | const struct user_regset_view *view = task_user_regset_view(current); |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 864 | compat_ulong_t caddr2 = task_pt_regs(current)->u_regs[UREG_I4]; |
| 865 | struct pt_regs32 __user *pregs; |
| 866 | struct compat_fps __user *fps; |
| 867 | unsigned long addr2 = caddr2; |
| 868 | unsigned long addr = caddr; |
| 869 | unsigned long data = cdata; |
David S. Miller | 9473272 | 2008-02-07 05:06:12 -0800 | [diff] [blame] | 870 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 872 | pregs = (struct pt_regs32 __user *) addr; |
| 873 | fps = (struct compat_fps __user *) addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 875 | switch (request) { |
David S. Miller | 1759e58 | 2006-04-01 23:28:10 -0800 | [diff] [blame] | 876 | case PTRACE_PEEKUSR: |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 877 | ret = (addr != 0) ? -EIO : 0; |
| 878 | break; |
David S. Miller | 1759e58 | 2006-04-01 23:28:10 -0800 | [diff] [blame] | 879 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 880 | case PTRACE_GETREGS: |
David S. Miller | 9473272 | 2008-02-07 05:06:12 -0800 | [diff] [blame] | 881 | ret = copy_regset_to_user(child, view, REGSET_GENERAL, |
| 882 | 32 * sizeof(u32), |
| 883 | 4 * sizeof(u32), |
| 884 | &pregs->psr); |
| 885 | if (!ret) |
| 886 | ret = copy_regset_to_user(child, view, REGSET_GENERAL, |
| 887 | 1 * sizeof(u32), |
| 888 | 15 * sizeof(u32), |
| 889 | &pregs->u_regs[0]); |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 890 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 892 | case PTRACE_SETREGS: |
David S. Miller | 9473272 | 2008-02-07 05:06:12 -0800 | [diff] [blame] | 893 | ret = copy_regset_from_user(child, view, REGSET_GENERAL, |
| 894 | 32 * sizeof(u32), |
| 895 | 4 * sizeof(u32), |
| 896 | &pregs->psr); |
| 897 | if (!ret) |
| 898 | ret = copy_regset_from_user(child, view, REGSET_GENERAL, |
| 899 | 1 * sizeof(u32), |
| 900 | 15 * sizeof(u32), |
| 901 | &pregs->u_regs[0]); |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 902 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 904 | case PTRACE_GETFPREGS: |
David S. Miller | 9473272 | 2008-02-07 05:06:12 -0800 | [diff] [blame] | 905 | ret = copy_regset_to_user(child, view, REGSET_FP, |
| 906 | 0 * sizeof(u32), |
| 907 | 32 * sizeof(u32), |
| 908 | &fps->regs[0]); |
| 909 | if (!ret) |
| 910 | ret = copy_regset_to_user(child, view, REGSET_FP, |
| 911 | 33 * sizeof(u32), |
| 912 | 1 * sizeof(u32), |
| 913 | &fps->fsr); |
| 914 | if (!ret) { |
| 915 | if (__put_user(0, &fps->flags) || |
| 916 | __put_user(0, &fps->extra) || |
| 917 | __put_user(0, &fps->fpqd) || |
| 918 | clear_user(&fps->fpq[0], 32 * sizeof(unsigned int))) |
| 919 | ret = -EFAULT; |
| 920 | } |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 921 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 923 | case PTRACE_SETFPREGS: |
David S. Miller | 9473272 | 2008-02-07 05:06:12 -0800 | [diff] [blame] | 924 | ret = copy_regset_from_user(child, view, REGSET_FP, |
| 925 | 0 * sizeof(u32), |
| 926 | 32 * sizeof(u32), |
| 927 | &fps->regs[0]); |
| 928 | if (!ret) |
| 929 | ret = copy_regset_from_user(child, view, REGSET_FP, |
| 930 | 33 * sizeof(u32), |
| 931 | 1 * sizeof(u32), |
| 932 | &fps->fsr); |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 933 | break; |
David S. Miller | 731bbe4 | 2006-04-04 16:54:40 -0700 | [diff] [blame] | 934 | |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 935 | case PTRACE_READTEXT: |
| 936 | case PTRACE_READDATA: |
| 937 | ret = ptrace_readdata(child, addr, |
| 938 | (char __user *)addr2, data); |
| 939 | if (ret == data) |
| 940 | ret = 0; |
| 941 | else if (ret >= 0) |
| 942 | ret = -EIO; |
| 943 | break; |
| 944 | |
| 945 | case PTRACE_WRITETEXT: |
| 946 | case PTRACE_WRITEDATA: |
| 947 | ret = ptrace_writedata(child, (char __user *) addr2, |
| 948 | addr, data); |
| 949 | if (ret == data) |
| 950 | ret = 0; |
| 951 | else if (ret >= 0) |
| 952 | ret = -EIO; |
| 953 | break; |
| 954 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 955 | default: |
David S. Miller | 986bef8 | 2008-05-10 21:11:23 -0700 | [diff] [blame] | 956 | if (request == PTRACE_SPARC_DETACH) |
| 957 | request = PTRACE_DETACH; |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 958 | ret = compat_ptrace_request(child, request, addr, data); |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 959 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | } |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 961 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 962 | return ret; |
| 963 | } |
David S. Miller | 11cc8a3 | 2008-03-26 04:31:50 -0700 | [diff] [blame] | 964 | #endif /* CONFIG_COMPAT */ |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 965 | |
| 966 | struct fps { |
| 967 | unsigned int regs[64]; |
| 968 | unsigned long fsr; |
| 969 | }; |
| 970 | |
Namhyung Kim | 9b05a69 | 2010-10-27 15:33:47 -0700 | [diff] [blame] | 971 | long arch_ptrace(struct task_struct *child, long request, |
| 972 | unsigned long addr, unsigned long data) |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 973 | { |
David S. Miller | d786a4a | 2008-04-09 19:39:25 -0700 | [diff] [blame] | 974 | const struct user_regset_view *view = task_user_regset_view(current); |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 975 | unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4]; |
David S. Miller | bfdf9eb | 2008-03-26 00:46:21 -0700 | [diff] [blame] | 976 | struct pt_regs __user *pregs; |
| 977 | struct fps __user *fps; |
Namhyung Kim | a9384e2 | 2010-10-27 15:34:03 -0700 | [diff] [blame] | 978 | void __user *addr2p; |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 979 | int ret; |
| 980 | |
Namhyung Kim | 9b05a69 | 2010-10-27 15:33:47 -0700 | [diff] [blame] | 981 | pregs = (struct pt_regs __user *) addr; |
| 982 | fps = (struct fps __user *) addr; |
Namhyung Kim | a9384e2 | 2010-10-27 15:34:03 -0700 | [diff] [blame] | 983 | addr2p = (void __user *) addr2; |
David S. Miller | bfdf9eb | 2008-03-26 00:46:21 -0700 | [diff] [blame] | 984 | |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 985 | switch (request) { |
| 986 | case PTRACE_PEEKUSR: |
| 987 | ret = (addr != 0) ? -EIO : 0; |
| 988 | break; |
| 989 | |
| 990 | case PTRACE_GETREGS64: |
| 991 | ret = copy_regset_to_user(child, view, REGSET_GENERAL, |
| 992 | 1 * sizeof(u64), |
| 993 | 15 * sizeof(u64), |
| 994 | &pregs->u_regs[0]); |
| 995 | if (!ret) { |
| 996 | /* XXX doesn't handle 'y' register correctly XXX */ |
| 997 | ret = copy_regset_to_user(child, view, REGSET_GENERAL, |
| 998 | 32 * sizeof(u64), |
| 999 | 4 * sizeof(u64), |
| 1000 | &pregs->tstate); |
| 1001 | } |
| 1002 | break; |
| 1003 | |
| 1004 | case PTRACE_SETREGS64: |
| 1005 | ret = copy_regset_from_user(child, view, REGSET_GENERAL, |
| 1006 | 1 * sizeof(u64), |
| 1007 | 15 * sizeof(u64), |
| 1008 | &pregs->u_regs[0]); |
| 1009 | if (!ret) { |
| 1010 | /* XXX doesn't handle 'y' register correctly XXX */ |
| 1011 | ret = copy_regset_from_user(child, view, REGSET_GENERAL, |
| 1012 | 32 * sizeof(u64), |
| 1013 | 4 * sizeof(u64), |
| 1014 | &pregs->tstate); |
| 1015 | } |
| 1016 | break; |
| 1017 | |
| 1018 | case PTRACE_GETFPREGS64: |
| 1019 | ret = copy_regset_to_user(child, view, REGSET_FP, |
| 1020 | 0 * sizeof(u64), |
| 1021 | 33 * sizeof(u64), |
| 1022 | fps); |
| 1023 | break; |
| 1024 | |
| 1025 | case PTRACE_SETFPREGS64: |
Chris Torek | ee4ee52 | 2008-12-03 00:47:28 -0800 | [diff] [blame] | 1026 | ret = copy_regset_from_user(child, view, REGSET_FP, |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 1027 | 0 * sizeof(u64), |
| 1028 | 33 * sizeof(u64), |
| 1029 | fps); |
| 1030 | break; |
| 1031 | |
| 1032 | case PTRACE_READTEXT: |
| 1033 | case PTRACE_READDATA: |
Namhyung Kim | a9384e2 | 2010-10-27 15:34:03 -0700 | [diff] [blame] | 1034 | ret = ptrace_readdata(child, addr, addr2p, data); |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 1035 | if (ret == data) |
| 1036 | ret = 0; |
| 1037 | else if (ret >= 0) |
| 1038 | ret = -EIO; |
| 1039 | break; |
| 1040 | |
| 1041 | case PTRACE_WRITETEXT: |
| 1042 | case PTRACE_WRITEDATA: |
Namhyung Kim | a9384e2 | 2010-10-27 15:34:03 -0700 | [diff] [blame] | 1043 | ret = ptrace_writedata(child, addr2p, addr, data); |
David S. Miller | 2ba85f3 | 2008-02-07 22:46:09 -0800 | [diff] [blame] | 1044 | if (ret == data) |
| 1045 | ret = 0; |
| 1046 | else if (ret >= 0) |
| 1047 | ret = -EIO; |
| 1048 | break; |
| 1049 | |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 1050 | default: |
David S. Miller | 986bef8 | 2008-05-10 21:11:23 -0700 | [diff] [blame] | 1051 | if (request == PTRACE_SPARC_DETACH) |
| 1052 | request = PTRACE_DETACH; |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 1053 | ret = ptrace_request(child, request, addr, data); |
| 1054 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | } |
David S. Miller | 9775369 | 2008-02-07 03:00:17 -0800 | [diff] [blame] | 1056 | |
| 1057 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | } |
| 1059 | |
David S. Miller | fe06cca | 2008-08-24 20:10:23 -0700 | [diff] [blame] | 1060 | asmlinkage int syscall_trace_enter(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | { |
Roland McGrath | 73ccefa | 2008-07-27 00:30:50 -0700 | [diff] [blame] | 1062 | int ret = 0; |
| 1063 | |
David S. Miller | bb49bcd | 2005-07-10 16:49:28 -0700 | [diff] [blame] | 1064 | /* do the secure computing check first */ |
Will Drewry | e4da89d | 2012-04-17 14:48:57 -0500 | [diff] [blame] | 1065 | secure_computing_strict(regs->u_regs[UREG_G1]); |
David S. Miller | bb49bcd | 2005-07-10 16:49:28 -0700 | [diff] [blame] | 1066 | |
David S. Miller | fe06cca | 2008-08-24 20:10:23 -0700 | [diff] [blame] | 1067 | if (test_thread_flag(TIF_SYSCALL_TRACE)) |
| 1068 | ret = tracehook_report_syscall_entry(regs); |
David S. Miller | f7ceba3 | 2005-07-10 19:29:45 -0700 | [diff] [blame] | 1069 | |
David S. Miller | c658ad1 | 2009-12-11 00:44:47 -0800 | [diff] [blame] | 1070 | if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) |
| 1071 | trace_sys_enter(regs, regs->u_regs[UREG_G1]); |
| 1072 | |
Eric Paris | b05d844 | 2012-01-03 14:23:06 -0500 | [diff] [blame] | 1073 | audit_syscall_entry((test_thread_flag(TIF_32BIT) ? |
| 1074 | AUDIT_ARCH_SPARC : |
| 1075 | AUDIT_ARCH_SPARC64), |
| 1076 | regs->u_regs[UREG_G1], |
| 1077 | regs->u_regs[UREG_I0], |
| 1078 | regs->u_regs[UREG_I1], |
| 1079 | regs->u_regs[UREG_I2], |
| 1080 | regs->u_regs[UREG_I3]); |
Roland McGrath | 73ccefa | 2008-07-27 00:30:50 -0700 | [diff] [blame] | 1081 | |
| 1082 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | } |
David S. Miller | fe06cca | 2008-08-24 20:10:23 -0700 | [diff] [blame] | 1084 | |
| 1085 | asmlinkage void syscall_trace_leave(struct pt_regs *regs) |
| 1086 | { |
Eric Paris | d7e7528 | 2012-01-03 14:23:06 -0500 | [diff] [blame] | 1087 | audit_syscall_exit(regs); |
David S. Miller | fe06cca | 2008-08-24 20:10:23 -0700 | [diff] [blame] | 1088 | |
David S. Miller | c658ad1 | 2009-12-11 00:44:47 -0800 | [diff] [blame] | 1089 | if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) |
| 1090 | trace_sys_exit(regs, regs->u_regs[UREG_G1]); |
| 1091 | |
David S. Miller | fe06cca | 2008-08-24 20:10:23 -0700 | [diff] [blame] | 1092 | if (test_thread_flag(TIF_SYSCALL_TRACE)) |
| 1093 | tracehook_report_syscall_exit(regs, 0); |
| 1094 | } |