s390/kernel/ptrace.c

3  *  Ptrace user space interface.
18 #include <linux/user.h>
90 	/* Copy user specified PER registers */
95 	/* merge TIF_SINGLE_STEP into user specified PER registers. */
175 		/* Start address of the user specified per set. */
178 		/* End address of the user specified per set. */
195  * Read the word at offset addr from the user area of a process. The
200  * struct user contain pad bytes that should be read as zeroes.
207 	if (addr < offsetof(struct user, regs.acrs)) {
212 		if (addr == offsetof(struct user, regs.psw.mask)) {
218 	} else if (addr < offsetof(struct user, regs.orig_gpr2)) {
222 		offset = addr - offsetof(struct user, regs.acrs);
228 		if (addr == offsetof(struct user, regs.acrs[15]))
233 	} else if (addr == offsetof(struct user, regs.orig_gpr2)) {
239 	} else if (addr < offsetof(struct user, regs.fp_regs)) {
246 	} else if (addr == offsetof(struct user, regs.fp_regs.fpc)) {
253 	} else if (addr < offsetof(struct user, regs.fp_regs) + sizeof(s390_fp_regs)) {
257 		offset = addr - offsetof(struct user, regs.fp_regs.fprs);
259 	} else if (addr < offsetof(struct user, regs.per_info) + sizeof(per_struct)) {
263 		addr -= offsetof(struct user, regs.per_info);
282 	if (addr >= offsetof(struct user, regs.acrs) &&
283 	    addr < offsetof(struct user, regs.orig_gpr2))
285 	if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
297 	 * debugger user can write to.
303 	 * The user specified PER event mask and the start and end
308 		/* PER event mask of the user specified per set. */
312 		/* Starting address of the user specified per set. */
315 		/* Ending address of the user specified per set. */
320  * Write a word to the user area of a process at location addr. This
330 	if (addr < offsetof(struct user, regs.acrs)) {
335 		if (addr == offsetof(struct user, regs.psw.mask)) {
351 			addr == offsetof(struct user, regs.gprs[2])) {
357 	} else if (addr < offsetof(struct user, regs.orig_gpr2)) {
361 		offset = addr - offsetof(struct user, regs.acrs);
368 		if (addr == offsetof(struct user, regs.acrs[15]))
373 	} else if (addr == offsetof(struct user, regs.orig_gpr2)) {
379 	} else if (addr < offsetof(struct user, regs.fp_regs)) {
386 	} else if (addr == offsetof(struct user, regs.fp_regs.fpc)) {
394 	} else if (addr < offsetof(struct user, regs.fp_regs) + sizeof(s390_fp_regs)) {
398 		offset = addr - offsetof(struct user, regs.fp_regs.fprs);
400 	} else if (addr < offsetof(struct user, regs.per_info) + sizeof(per_struct)) {
404 		addr -= offsetof(struct user, regs.per_info);
421 	if (addr >= offsetof(struct user, regs.acrs) &&
422 	    addr < offsetof(struct user, regs.orig_gpr2))
424 	if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
517  * is a 31 bit program too, the content of struct user can be
518  * emulated. A 31 bit program peeking into the struct user of
545 		/* Start address of the user specified per set. */
548 		/* End address of the user specified per set. */
638 	if (!is_compat_task() || (addr & 3) || addr > sizeof(struct user) - 3)
652 		/* PER event mask of the user specified per set. */
656 		/* Starting address of the user specified per set. */
659 		/* Ending address of the user specified per set. */
1192 	 * Override access key in any case, since user space should