/* SPDX-License-Identifier: GPL-2.0-or-later */ /* TOC (Transfer of Control) handler. */ 	.level 1.1 #include <asm/assembly.h>#include <linux/threads.h>#include <linux/linkage.h> 	.text	.import toc_intr,code	.import toc_stack,data	.align 16ENTRY_CFI(toc_handler)	load32	PA(toc_stack),%sp #ifdef CONFIG_SMP	/* get per-cpu toc_stack address. */	mfctl   %cr30, %r1	tophys  %r1,%r2			/* task_struct */	LDREG   TASK_TI_CPU(%r2),%r4	/* cpu */	load32	PA(__per_cpu_offset),%r1	LDREGX  %r4(%r1),%r4	add	%r4,%sp,%sp#endif 	/*	 * setup pt_regs on stack and save the	 * floating point registers. PIM_TOC doesn't	 * save fp registers, so we're doing it here.	 */	copy	%sp,%arg0	ldo	PT_SZ_ALGN(%sp), %sp 	/* clear pt_regs */	copy	%arg0,%r10:	cmpb,<<,n %r1,%sp,0b	stw,ma	%r0,4(%r1) 	ldo	PT_FR0(%arg0),%r25	save_fp	%r25 	/* go virtual */	load32	PA(swapper_pg_dir),%r4	mtctl	%r4,%cr24	mtctl	%r4,%cr25 	/* Clear sr4-sr7 */	mtsp	%r0, %sr4	mtsp	%r0, %sr5	mtsp	%r0, %sr6	mtsp	%r0, %sr7 	tovirt_r1 %sp	tovirt_r1 %arg0	virt_map 	loadgp #ifdef CONFIG_64BIT	ldo	-16(%sp),%r29#endif	load32	toc_intr,%r1	be	0(%sr7,%r1)	nopENDPROC_CFI(toc_handler) 	/*	 * keep this checksum here, as it is part of the toc_handler	 * spanned by toc_handler_size (all words in toc_handler are	 * added in PDC and the sum must equal to zero.	 */SYM_DATA(toc_handler_csum, .long 0)SYM_DATA(toc_handler_size, .long . - toc_handler)