powerpc/kernel/head_booke.h

1 /* SPDX-License-Identifier: GPL-2.0 */
13  * Macros used for common Book-e exception handling
32  * Note that entries 0-3 are used for the prolog code, and the remaining
63 	lwz	r11, TASK_STACK - THREAD(r10);				     \
101 	addi	r2, r2, -THREAD
139 	lwz	r1, TASK_STACK - THREAD(r10)
141 	ALLOC_STACK_FRAME(r1, THREAD_SIZE - INT_FRAME_SIZE)
148 /* To handle the additional exception priority levels on Book-E
155  * is necessary since the MMU is always on, for Book-E parts, and the stacks
161  * providing configurations that micro-optimize space usage.
176 	addi	r8,r8,THREAD_SIZE - INT_FRAME_SIZE;
181 	addi	r8,r8,THREAD_SIZE - INT_FRAME_SIZE;
207 	lwz	r11, TASK_STACK - THREAD(r11); /* this thread's kernel stack */\
208 	addi	r11,r11,THREAD_SIZE - INT_FRAME_SIZE;	/* allocate stack frame    */\
276  * Guest Doorbell -- this is a bit odd in that uses GSRR0/1 despite
278  * inside a KVM guest -- so we just handle up to the DO_KVM rather
337  * The exception handler was handling a non-critical interrupt, so it will
346 	 * If there is a single step or branch-taken exception in an	      \
353 	mfspr	r10,SPRN_DBSR;		/* check single-step/branch taken */  \
404 	 * If there is a single step or branch-taken exception in an	      \
411 	mfspr	r10,SPRN_DBSR;		/* check single-step/branch taken */  \
479 	li	r5,0;			/* Store 0 in regs->esr (dsisr) */    \
481 	stw	r12, _DEAR(r11);	/* Set regs->dear (dar) to SRR0 */    \