21 static int __patch_instruction(struct ppc_inst *exec_addr, struct ppc_inst instr,  in __patch_instruction()  argument
24 	if (!ppc_inst_prefixed(instr))  in __patch_instruction()
25 		__put_user_asm_goto(ppc_inst_val(instr), patch_addr, failed, "stw");  in __patch_instruction()
27 		__put_user_asm_goto(ppc_inst_as_u64(instr), patch_addr, failed, "std");  in __patch_instruction()
38 int raw_patch_instruction(struct ppc_inst *addr, struct ppc_inst instr)  in raw_patch_instruction()  argument
40 	return __patch_instruction(addr, instr, addr);  in raw_patch_instruction()
146 static int do_patch_instruction(struct ppc_inst *addr, struct ppc_inst instr)  in do_patch_instruction()  argument
160 		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(struct ppc_inst *addr, struct ppc_inst instr)  in do_patch_instruction()  argument
187 	return raw_patch_instruction(addr, instr);  in do_patch_instruction()
192 int patch_instruction(struct ppc_inst *addr, struct ppc_inst instr)  in patch_instruction()  argument
199 	return do_patch_instruction(addr, instr);  in patch_instruction()
205 	struct ppc_inst instr;  in patch_branch()  local
207 	create_branch(&instr, addr, target, flags);  in patch_branch()
208 	return patch_instruction(addr, instr);  in patch_branch()
237 bool is_conditional_branch(struct ppc_inst instr)  in is_conditional_branch()  argument
239 	unsigned int opcode = ppc_inst_primary_opcode(instr);  in is_conditional_branch()
244 		switch ((ppc_inst_val(instr) >> 1) & 0x3ff) {  in is_conditional_branch()
255 int create_branch(struct ppc_inst *instr,  in create_branch()  argument
261 	*instr = ppc_inst(0);  in create_branch()
271 	*instr = ppc_inst(0x48000000 | (flags & 0x3) | (offset & 0x03FFFFFC));  in create_branch()
276 int create_cond_branch(struct ppc_inst *instr, const struct ppc_inst *addr,  in create_cond_branch()  argument
290 	*instr = ppc_inst(0x40000000 | (flags & 0x3FF0003) | (offset & 0xFFFC));  in create_cond_branch()
295 static unsigned int branch_opcode(struct ppc_inst instr)  in branch_opcode()  argument
297 	return ppc_inst_primary_opcode(instr) & 0x3F;  in branch_opcode()
300 static int instr_is_branch_iform(struct ppc_inst instr)  in instr_is_branch_iform()  argument
302 	return branch_opcode(instr) == 18;  in instr_is_branch_iform()
305 static int instr_is_branch_bform(struct ppc_inst instr)  in instr_is_branch_bform()  argument
307 	return branch_opcode(instr) == 16;  in instr_is_branch_bform()
310 int instr_is_relative_branch(struct ppc_inst instr)  in instr_is_relative_branch()  argument
312 	if (ppc_inst_val(instr) & BRANCH_ABSOLUTE)  in instr_is_relative_branch()
315 	return instr_is_branch_iform(instr) || instr_is_branch_bform(instr);  in instr_is_relative_branch()
318 int instr_is_relative_link_branch(struct ppc_inst instr)  in instr_is_relative_link_branch()  argument
320 	return instr_is_relative_branch(instr) && (ppc_inst_val(instr) & BRANCH_SET_LINK);  in instr_is_relative_link_branch()
323 static unsigned long branch_iform_target(const struct ppc_inst *instr)  in branch_iform_target()  argument
327 	imm = ppc_inst_val(*instr) & 0x3FFFFFC;  in branch_iform_target()
333 	if ((ppc_inst_val(*instr) & BRANCH_ABSOLUTE) == 0)  in branch_iform_target()
334 		imm += (unsigned long)instr;  in branch_iform_target()
339 static unsigned long branch_bform_target(const struct ppc_inst *instr)  in branch_bform_target()  argument
343 	imm = ppc_inst_val(*instr) & 0xFFFC;  in branch_bform_target()
349 	if ((ppc_inst_val(*instr) & BRANCH_ABSOLUTE) == 0)  in branch_bform_target()
350 		imm += (unsigned long)instr;  in branch_bform_target()
355 unsigned long branch_target(const struct ppc_inst *instr)  in branch_target()  argument
357 	if (instr_is_branch_iform(ppc_inst_read(instr)))  in branch_target()
358 		return branch_iform_target(instr);  in branch_target()
359 	else if (instr_is_branch_bform(ppc_inst_read(instr)))  in branch_target()
360 		return branch_bform_target(instr);  in branch_target()
365 int instr_is_branch_to_addr(const struct ppc_inst *instr, unsigned long addr)  in instr_is_branch_to_addr()  argument
367 	if (instr_is_branch_iform(ppc_inst_read(instr)) ||  in instr_is_branch_to_addr()
368 	    instr_is_branch_bform(ppc_inst_read(instr)))  in instr_is_branch_to_addr()
369 		return branch_target(instr) == addr;  in instr_is_branch_to_addr()
374 int translate_branch(struct ppc_inst *instr, const struct ppc_inst *dest,  in translate_branch()  argument
381 		return create_branch(instr, dest, target,  in translate_branch()
384 		return create_cond_branch(instr, dest, target,  in translate_branch()
419 	struct ppc_inst instr;  in test_branch_iform()  local
422 	addr = (unsigned long)&instr;  in test_branch_iform()
443 	instr = ppc_inst(0x48000103);  in test_branch_iform()
444 	check(instr_is_branch_to_addr(&instr, 0x100));  in test_branch_iform()
446 	instr = ppc_inst(0x480420ff);  in test_branch_iform()
447 	check(instr_is_branch_to_addr(&instr, 0x420fc));  in test_branch_iform()
449 	instr = ppc_inst(0x49fffffc);  in test_branch_iform()
450 	check(instr_is_branch_to_addr(&instr, addr + 0x1FFFFFC));  in test_branch_iform()
452 	instr = ppc_inst(0x4bfffffc);  in test_branch_iform()
453 	check(instr_is_branch_to_addr(&instr, addr - 4));  in test_branch_iform()
455 	instr = ppc_inst(0x4a000000);  in test_branch_iform()
456 	check(instr_is_branch_to_addr(&instr, addr - 0x2000000));  in test_branch_iform()
459 	err = create_branch(&instr, &instr, addr, BRANCH_SET_LINK);  in test_branch_iform()
460 	check(instr_is_branch_to_addr(&instr, addr));  in test_branch_iform()
463 	err = create_branch(&instr, &instr, addr - 0x100, BRANCH_SET_LINK);  in test_branch_iform()
464 	check(instr_is_branch_to_addr(&instr, addr - 0x100));  in test_branch_iform()
467 	err = create_branch(&instr, &instr, addr + 0x100, 0);  in test_branch_iform()
468 	check(instr_is_branch_to_addr(&instr, addr + 0x100));  in test_branch_iform()
471 	err = create_branch(&instr, &instr, addr - 0x2000000, BRANCH_SET_LINK);  in test_branch_iform()
472 	check(instr_is_branch_to_addr(&instr, addr - 0x2000000));  in test_branch_iform()
475 	err = create_branch(&instr, &instr, addr - 0x2000004, BRANCH_SET_LINK);  in test_branch_iform()
479 	err = create_branch(&instr, &instr, addr + 0x2000000, BRANCH_SET_LINK);  in test_branch_iform()
483 	err = create_branch(&instr, &instr, addr + 3, BRANCH_SET_LINK);  in test_branch_iform()
487 	err = create_branch(&instr, &instr, addr, 0xFFFFFFFC);  in test_branch_iform()
488 	check(instr_is_branch_to_addr(&instr, addr));  in test_branch_iform()
489 	check(ppc_inst_equal(instr, ppc_inst(0x48000000)));  in test_branch_iform()
496 	struct ppc_inst instr;  in test_create_function_call()  local
501 	create_branch(&instr, iptr, dest, BRANCH_SET_LINK);  in test_create_function_call()
502 	patch_instruction(iptr, instr);  in test_create_function_call()
510 	struct ppc_inst *iptr, instr;  in test_branch_bform()  local
513 	iptr = &instr;  in test_branch_bform()
526 	instr = ppc_inst(0x43ff0103);  in test_branch_bform()
527 	check(instr_is_branch_to_addr(&instr, 0x100));  in test_branch_bform()
529 	instr = ppc_inst(0x43ff20ff);  in test_branch_bform()
530 	check(instr_is_branch_to_addr(&instr, 0x20fc));  in test_branch_bform()
532 	instr = ppc_inst(0x43ff7ffc);  in test_branch_bform()
533 	check(instr_is_branch_to_addr(&instr, addr + 0x7FFC));  in test_branch_bform()
535 	instr = ppc_inst(0x43fffffc);  in test_branch_bform()
536 	check(instr_is_branch_to_addr(&instr, addr - 4));  in test_branch_bform()
538 	instr = ppc_inst(0x43ff8000);  in test_branch_bform()
539 	check(instr_is_branch_to_addr(&instr, addr - 0x8000));  in test_branch_bform()
545 	err = create_cond_branch(&instr, iptr, addr, flags);  in test_branch_bform()
546 	check(instr_is_branch_to_addr(&instr, addr));  in test_branch_bform()
549 	err = create_cond_branch(&instr, iptr, addr - 0x100, flags);  in test_branch_bform()
550 	check(instr_is_branch_to_addr(&instr, addr - 0x100));  in test_branch_bform()
553 	err = create_cond_branch(&instr, iptr, addr + 0x100, flags);  in test_branch_bform()
554 	check(instr_is_branch_to_addr(&instr, addr + 0x100));  in test_branch_bform()
557 	err = create_cond_branch(&instr, iptr, addr - 0x8000, flags);  in test_branch_bform()
558 	check(instr_is_branch_to_addr(&instr, addr - 0x8000));  in test_branch_bform()
561 	err = create_cond_branch(&instr, iptr, addr - 0x8004, flags);  in test_branch_bform()
565 	err = create_cond_branch(&instr, iptr, addr + 0x8000, flags);  in test_branch_bform()
569 	err = create_cond_branch(&instr, iptr, addr + 3, flags);  in test_branch_bform()
573 	err = create_cond_branch(&instr, iptr, addr, 0xFFFFFFFC);  in test_branch_bform()
574 	check(instr_is_branch_to_addr(&instr, addr));  in test_branch_bform()
575 	check(ppc_inst_equal(instr, ppc_inst(0x43FF0000)));  in test_branch_bform()
582 	struct ppc_inst instr;  in test_translate_branch()  local
596 	translate_branch(&instr, q, p);  in test_translate_branch()
597 	patch_instruction(q, instr);  in test_translate_branch()
605 	translate_branch(&instr, q, p);  in test_translate_branch()
606 	patch_instruction(q, instr);  in test_translate_branch()
616 	translate_branch(&instr, q, p);  in test_translate_branch()
617 	patch_instruction(q, instr);  in test_translate_branch()
627 	translate_branch(&instr, q, p);  in test_translate_branch()
628 	patch_instruction(q, instr);  in test_translate_branch()
637 	translate_branch(&instr, q, p);  in test_translate_branch()
638 	patch_instruction(q, instr);  in test_translate_branch()
648 	create_cond_branch(&instr, p, addr, 0);  in test_translate_branch()
649 	patch_instruction(p, instr);  in test_translate_branch()
652 	translate_branch(&instr, q, p);  in test_translate_branch()
653 	patch_instruction(q, instr);  in test_translate_branch()
659 	create_cond_branch(&instr, p, addr, 0xFFFFFFFC);  in test_translate_branch()
660 	patch_instruction(p, instr);  in test_translate_branch()
662 	translate_branch(&instr, q, p);  in test_translate_branch()
663 	patch_instruction(q, instr);  in test_translate_branch()
671 	create_cond_branch(&instr, p, addr, 0xFFFFFFFC);  in test_translate_branch()
672 	patch_instruction(p, instr);  in test_translate_branch()
674 	translate_branch(&instr, q, p);  in test_translate_branch()
675 	patch_instruction(q, instr);  in test_translate_branch()
683 	create_cond_branch(&instr, p, addr, BRANCH_SET_LINK);  in test_translate_branch()
684 	patch_instruction(p, instr);  in test_translate_branch()
686 	translate_branch(&instr, q, p);  in test_translate_branch()
687 	patch_instruction(q, instr);  in test_translate_branch()
694 	create_cond_branch(&instr, p, addr, 0);  in test_translate_branch()
695 	patch_instruction(p, instr);  in test_translate_branch()
697 	translate_branch(&instr, q, p);  in test_translate_branch()
698 	patch_instruction(q, instr);  in test_translate_branch()