26 static int __patch_instruction(unsigned int *exec_addr, unsigned int instr,  in __patch_instruction()  argument
31 	__put_user_size(instr, patch_addr, 4, err);  in __patch_instruction()
41 int raw_patch_instruction(unsigned int *addr, unsigned int instr)  in raw_patch_instruction()  argument
43 	return __patch_instruction(addr, instr, addr);  in raw_patch_instruction()
145 static int do_patch_instruction(unsigned int *addr, unsigned int instr)  in do_patch_instruction()  argument
159 		return raw_patch_instruction(addr, instr);  in do_patch_instruction()
172 	__patch_instruction(addr, instr, patch_addr);  in do_patch_instruction()
185 static int do_patch_instruction(unsigned int *addr, unsigned int instr)  in do_patch_instruction()  argument
187 	return raw_patch_instruction(addr, instr);  in do_patch_instruction()
192 int patch_instruction(unsigned int *addr, unsigned int instr)  in patch_instruction()  argument
199 	return do_patch_instruction(addr, instr);  in patch_instruction()
216 int patch_instruction_site(s32 *site, unsigned int instr)  in patch_instruction_site()  argument
221 	return patch_instruction(addr, instr);  in patch_instruction_site()
250 bool is_conditional_branch(unsigned int instr)  in is_conditional_branch()  argument
252 	unsigned int opcode = instr >> 26;  in is_conditional_branch()
257 		switch ((instr >> 1) & 0x3ff) {  in is_conditional_branch()
308 static unsigned int branch_opcode(unsigned int instr)  in branch_opcode()  argument
310 	return (instr >> 26) & 0x3F;  in branch_opcode()
313 static int instr_is_branch_iform(unsigned int instr)  in instr_is_branch_iform()  argument
315 	return branch_opcode(instr) == 18;  in instr_is_branch_iform()
318 static int instr_is_branch_bform(unsigned int instr)  in instr_is_branch_bform()  argument
320 	return branch_opcode(instr) == 16;  in instr_is_branch_bform()
323 int instr_is_relative_branch(unsigned int instr)  in instr_is_relative_branch()  argument
325 	if (instr & BRANCH_ABSOLUTE)  in instr_is_relative_branch()
328 	return instr_is_branch_iform(instr) || instr_is_branch_bform(instr);  in instr_is_relative_branch()
331 int instr_is_relative_link_branch(unsigned int instr)  in instr_is_relative_link_branch()  argument
333 	return instr_is_relative_branch(instr) && (instr & BRANCH_SET_LINK);  in instr_is_relative_link_branch()
336 static unsigned long branch_iform_target(const unsigned int *instr)  in branch_iform_target()  argument
340 	imm = *instr & 0x3FFFFFC;  in branch_iform_target()
346 	if ((*instr & BRANCH_ABSOLUTE) == 0)  in branch_iform_target()
347 		imm += (unsigned long)instr;  in branch_iform_target()
352 static unsigned long branch_bform_target(const unsigned int *instr)  in branch_bform_target()  argument
356 	imm = *instr & 0xFFFC;  in branch_bform_target()
362 	if ((*instr & BRANCH_ABSOLUTE) == 0)  in branch_bform_target()
363 		imm += (unsigned long)instr;  in branch_bform_target()
368 unsigned long branch_target(const unsigned int *instr)  in branch_target()  argument
370 	if (instr_is_branch_iform(*instr))  in branch_target()
371 		return branch_iform_target(instr);  in branch_target()
372 	else if (instr_is_branch_bform(*instr))  in branch_target()
373 		return branch_bform_target(instr);  in branch_target()
378 int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr)  in instr_is_branch_to_addr()  argument
380 	if (instr_is_branch_iform(*instr) || instr_is_branch_bform(*instr))  in instr_is_branch_to_addr()
381 		return branch_target(instr) == addr;  in instr_is_branch_to_addr()
428 	unsigned int instr;  in test_branch_iform()  local
431 	addr = (unsigned long)&instr;  in test_branch_iform()
452 	instr = 0x48000103;  in test_branch_iform()
453 	check(instr_is_branch_to_addr(&instr, 0x100));  in test_branch_iform()
455 	instr = 0x480420ff;  in test_branch_iform()
456 	check(instr_is_branch_to_addr(&instr, 0x420fc));  in test_branch_iform()
458 	instr = 0x49fffffc;  in test_branch_iform()
459 	check(instr_is_branch_to_addr(&instr, addr + 0x1FFFFFC));  in test_branch_iform()
461 	instr = 0x4bfffffc;  in test_branch_iform()
462 	check(instr_is_branch_to_addr(&instr, addr - 4));  in test_branch_iform()
464 	instr = 0x4a000000;  in test_branch_iform()
465 	check(instr_is_branch_to_addr(&instr, addr - 0x2000000));  in test_branch_iform()
468 	instr = create_branch(&instr, addr, BRANCH_SET_LINK);  in test_branch_iform()
469 	check(instr_is_branch_to_addr(&instr, addr));  in test_branch_iform()
472 	instr = create_branch(&instr, addr - 0x100, BRANCH_SET_LINK);  in test_branch_iform()
473 	check(instr_is_branch_to_addr(&instr, addr - 0x100));  in test_branch_iform()
476 	instr = create_branch(&instr, addr + 0x100, 0);  in test_branch_iform()
477 	check(instr_is_branch_to_addr(&instr, addr + 0x100));  in test_branch_iform()
480 	instr = create_branch(&instr, addr - 0x2000000, BRANCH_SET_LINK);  in test_branch_iform()
481 	check(instr_is_branch_to_addr(&instr, addr - 0x2000000));  in test_branch_iform()
484 	instr = create_branch(&instr, addr - 0x2000004, BRANCH_SET_LINK);  in test_branch_iform()
485 	check(instr == 0);  in test_branch_iform()
488 	instr = create_branch(&instr, addr + 0x2000000, BRANCH_SET_LINK);  in test_branch_iform()
489 	check(instr == 0);  in test_branch_iform()
492 	instr = create_branch(&instr, addr + 3, BRANCH_SET_LINK);  in test_branch_iform()
493 	check(instr == 0);  in test_branch_iform()
496 	instr = create_branch(&instr, addr, 0xFFFFFFFC);  in test_branch_iform()
497 	check(instr_is_branch_to_addr(&instr, addr));  in test_branch_iform()
498 	check(instr == 0x48000000);  in test_branch_iform()
516 	unsigned int *iptr, instr, flags;  in test_branch_bform()  local
518 	iptr = &instr;  in test_branch_bform()
531 	instr = 0x43ff0103;  in test_branch_bform()
532 	check(instr_is_branch_to_addr(&instr, 0x100));  in test_branch_bform()
534 	instr = 0x43ff20ff;  in test_branch_bform()
535 	check(instr_is_branch_to_addr(&instr, 0x20fc));  in test_branch_bform()
537 	instr = 0x43ff7ffc;  in test_branch_bform()
538 	check(instr_is_branch_to_addr(&instr, addr + 0x7FFC));  in test_branch_bform()
540 	instr = 0x43fffffc;  in test_branch_bform()
541 	check(instr_is_branch_to_addr(&instr, addr - 4));  in test_branch_bform()
543 	instr = 0x43ff8000;  in test_branch_bform()
544 	check(instr_is_branch_to_addr(&instr, addr - 0x8000));  in test_branch_bform()
550 	instr = create_cond_branch(iptr, addr, flags);  in test_branch_bform()
551 	check(instr_is_branch_to_addr(&instr, addr));  in test_branch_bform()
554 	instr = create_cond_branch(iptr, addr - 0x100, flags);  in test_branch_bform()
555 	check(instr_is_branch_to_addr(&instr, addr - 0x100));  in test_branch_bform()
558 	instr = create_cond_branch(iptr, addr + 0x100, flags);  in test_branch_bform()
559 	check(instr_is_branch_to_addr(&instr, addr + 0x100));  in test_branch_bform()
562 	instr = create_cond_branch(iptr, addr - 0x8000, flags);  in test_branch_bform()
563 	check(instr_is_branch_to_addr(&instr, addr - 0x8000));  in test_branch_bform()
566 	instr = create_cond_branch(iptr, addr - 0x8004, flags);  in test_branch_bform()
567 	check(instr == 0);  in test_branch_bform()
570 	instr = create_cond_branch(iptr, addr + 0x8000, flags);  in test_branch_bform()
571 	check(instr == 0);  in test_branch_bform()
574 	instr = create_cond_branch(iptr, addr + 3, flags);  in test_branch_bform()
575 	check(instr == 0);  in test_branch_bform()
578 	instr = create_cond_branch(iptr, addr, 0xFFFFFFFC);  in test_branch_bform()
579 	check(instr_is_branch_to_addr(&instr, addr));  in test_branch_bform()
580 	check(instr == 0x43FF0000);  in test_branch_bform()