powerpc/kernel/head_booke.h

13  * Macros used for common Book-e exception handling
33  * entries are available for specific exception use in the event a handler
65 1 :	subi	r11, r11, INT_FRAME_SIZE; /* Allocate exception frame */     \
86 	lis	r10, STACK_FRAME_REGS_MARKER@ha	/* exception frame marker */
148 /* To handle the additional exception priority levels on 40x and Book-E
155  * GPR to use as the base for indirect access to the exception stacks.  This
186  * Exception prolog for critical/machine check exceptions.  This is a
187  * little different from the normal exception prolog above since a
188  * critical/machine check exception can potentially occur at any point
189  * during normal exception processing. Thus we cannot use the same SPRG
191  * critical/machine check exception stack at low physical addresses.
213 	lwz	r10,GPR10(r8);		/* copy regs from exception stack  */\
229 	stw	r9,_ESR(r11);		/* exception was taken		   */\
278  * being delivered to the host.  This exception can only happen
294  * Exception vectors.
300 #define EXCEPTION(n, intno, label, hdlr)			\
329 /* Check for a single step debug exception while in an exception
332  * an exception (eg ITLB/DTLB miss) and thus the first instruction of
333  * the exception handler generates a single step debug exception.
335  * If we get a debug trap on the first instruction of an exception handler,
337  * a critical exception, so we are using SPRN_CSRR1 to manipulate the MSR).
338  * The exception handler was handling a non-critical interrupt, so it will
347 	 * If there is a single step or branch-taken exception in an	      \
348 	 * exception entry sequence, it was probably meant to apply to	      \
349 	 * the code where the exception occurred (since exception entry	      \
351 	 * of turning off DE on entry to an exception handler by turning      \
358 	lis	r10,interrupt_base@h;	/* check if exception in vectors */   \
361 	blt+	2f;			/* addr below exception vectors */    \
366 	bgt+	2f;			/* addr above exception vectors */    \
368 	/* here it looks like we got an inappropriate debug exception. */     \
390 	/* continue normal handling for a debug exception... */		      \
405 	 * If there is a single step or branch-taken exception in an	      \
406 	 * exception entry sequence, it was probably meant to apply to	      \
407 	 * the code where the exception occurred (since exception entry	      \
409 	 * of turning off DE on entry to an exception handler by turning      \
416 	lis	r10,interrupt_base@h;	/* check if exception in vectors */   \
419 	blt+	2f;			/* addr below exception vectors */    \
424 	bgt+	2f;			/* addr above exception vectors */    \
426 	/* here it looks like we got an inappropriate debug exception. */     \
448 	/* continue normal handling for a critical exception... */	      \