powerpc/kernel/head_booke.h

12  * Macros used for common Book-e exception handling
32  * entries are available for specific exception use in the event a handler
62 1 :	subi	r11, r11, INT_FRAME_SIZE; /* Allocate exception frame */     \
80 	lis	r10, STACK_FRAME_REGS_MARKER@ha;/* exception frame marker */ \
123 	lis	r12, STACK_FRAME_REGS_MARKER@ha /* exception frame marker */
183 /* To handle the additional exception priority levels on 40x and Book-E
191  * GPR to use as the base for indirect access to the exception stacks.  This
224  * Exception prolog for critical/machine check exceptions.  This is a
225  * little different from the normal exception prolog above since a
226  * critical/machine check exception can potentially occur at any point
227  * during normal exception processing. Thus we cannot use the same SPRG
229  * critical/machine check exception stack at low physical addresses.
249 	lwz	r10,GPR10(r8);		/* copy regs from exception stack  */\
265 	stw	r9,_ESR(r11);		/* exception was taken		   */\
286  * being delivered to the host.  This exception can only happen
302  * Exception vectors.
308 #define EXCEPTION(n, intno, label, hdlr, xfer)			\
347 /* Check for a single step debug exception while in an exception
350  * an exception (eg ITLB/DTLB miss) and thus the first instruction of
351  * the exception handler generates a single step debug exception.
353  * If we get a debug trap on the first instruction of an exception handler,
355  * a critical exception, so we are using SPRN_CSRR1 to manipulate the MSR).
356  * The exception handler was handling a non-critical interrupt, so it will
365 	 * If there is a single step or branch-taken exception in an	      \
366 	 * exception entry sequence, it was probably meant to apply to	      \
367 	 * the code where the exception occurred (since exception entry	      \
369 	 * of turning off DE on entry to an exception handler by turning      \
376 	lis	r10,interrupt_base@h;	/* check if exception in vectors */   \
379 	blt+	2f;			/* addr below exception vectors */    \
384 	bgt+	2f;			/* addr above exception vectors */    \
386 	/* here it looks like we got an inappropriate debug exception. */     \
408 	/* continue normal handling for a debug exception... */		      \
418 	 * If there is a single step or branch-taken exception in an	      \
419 	 * exception entry sequence, it was probably meant to apply to	      \
420 	 * the code where the exception occurred (since exception entry	      \
422 	 * of turning off DE on entry to an exception handler by turning      \
429 	lis	r10,interrupt_base@h;	/* check if exception in vectors */   \
432 	blt+	2f;			/* addr below exception vectors */    \
437 	bgt+	2f;			/* addr above exception vectors */    \
439 	/* here it looks like we got an inappropriate debug exception. */     \
461 	/* continue normal handling for a critical exception... */	      \