84 static long __kprobes address_ok(struct pt_regs *regs, unsigned long ea, int nb)  in address_ok()  argument
88 	return __access_ok(ea, nb, USER_DS);  in address_ok()
173 				      int nb)  in read_mem_aligned()  argument
178 	switch (nb) {  in read_mem_aligned()
200 					int nb, struct pt_regs *regs)  in read_mem_unaligned()  argument
205 	int len = nb; /* save a copy of the length for byte reversal */  in read_mem_unaligned()
210 	for (; nb > 0; nb -= c) {  in read_mem_unaligned()
217 		if (c > nb)  in read_mem_unaligned()
218 			c = max_align(nb);  in read_mem_unaligned()
250 static int __kprobes read_mem(unsigned long *dest, unsigned long ea, int nb,  in read_mem()  argument
253 	if (!address_ok(regs, ea, nb))  in read_mem()
255 	if ((ea & (nb - 1)) == 0)  in read_mem()
256 		return read_mem_aligned(dest, ea, nb);  in read_mem()
257 	return read_mem_unaligned(dest, ea, nb, regs);  in read_mem()
261 				       int nb)  in write_mem_aligned()  argument
265 	switch (nb) {  in write_mem_aligned()
285 					 int nb, struct pt_regs *regs)  in write_mem_unaligned()  argument
291 	switch (nb) {  in write_mem_unaligned()
306 	for (; nb > 0; nb -= c) {  in write_mem_unaligned()
313 		if (c > nb)  in write_mem_unaligned()
314 			c = max_align(nb);  in write_mem_unaligned()
315 		err = write_mem_aligned(val >> (nb - c) * 8, ea, c);  in write_mem_unaligned()
327 static int __kprobes write_mem(unsigned long val, unsigned long ea, int nb,  in write_mem()  argument
330 	if (!address_ok(regs, ea, nb))  in write_mem()
332 	if ((ea & (nb - 1)) == 0)  in write_mem()
333 		return write_mem_aligned(val, ea, nb);  in write_mem()
334 	return write_mem_unaligned(val, ea, nb, regs);  in write_mem()
343 				unsigned long ea, int nb,  in do_fp_load()  argument
363 	if (!address_ok(regs, ea, nb))  in do_fp_load()
368 	if (sizeof(unsigned long) == 8 || nb == 4) {  in do_fp_load()
369 		err = read_mem_unaligned(&data.ul[0], ea, nb, regs);  in do_fp_load()
370 		if (nb == 4)  in do_fp_load()
384 				 unsigned long ea, int nb,  in do_fp_store()  argument
404 	if (!address_ok(regs, ea, nb))  in do_fp_store()
409 	if (sizeof(unsigned long) == 8 || nb == 4) {  in do_fp_store()
410 		if (nb == 4)  in do_fp_store()
415 		err = write_mem_unaligned(data.ul[0], ea, nb, regs);  in do_fp_store()
1789 	int i, rd, nb;  in emulate_step()  local
1905 			nb = size - i;  in emulate_step()
1906 			if (nb > 4)  in emulate_step()
1907 				nb = 4;  in emulate_step()
1908 			err = read_mem(&regs->gpr[rd], op.ea, nb, regs);  in emulate_step()
1911 			if (nb < 4)	/* left-justify last bytes */  in emulate_step()
1912 				regs->gpr[rd] <<= 32 - 8 * nb;  in emulate_step()
1953 			nb = size - i;  in emulate_step()
1954 			if (nb > 4)  in emulate_step()
1955 				nb = 4;  in emulate_step()
1957 				val >>= 32 - 8 * nb;  in emulate_step()
1958 			err = write_mem(val, op.ea, nb, regs);  in emulate_step()