[xtensa-cvscommit] linux/arch/xtensa/kernel handlers.S,1.13,1.14 setup.c,1.6,1.7 traps.c,1.8,1.9

[<joe...@us...>]

Update of /cvsroot/xtensa/linux/arch/xtensa/kernel
In directory sc8-pr-cvs1:/tmp/cvs-serv6671/arch/xtensa/kernel

Modified Files:
	handlers.S setup.c traps.c 
Log Message:

Documentation updates only, focused on removing many XTFIXME comments that no longer apply, are already resolved, were erroneous, etc.

Index: handlers.S
===================================================================
RCS file: /cvsroot/xtensa/linux/arch/xtensa/kernel/handlers.S,v
retrieving revision 1.13
retrieving revision 1.14
diff -C2 -d -r1.13 -r1.14
*** handlers.S	13 Feb 2003 00:17:21 -0000	1.13
--- handlers.S	13 Feb 2003 18:19:20 -0000	1.14
***************
*** 66,71 ****
  */
  
- /* XTFIXME:  There are several "#if 0" statements in this file.
-    Most of them, we should either enable or delete. */
  
  #define _ASMLANGUAGE
--- 66,69 ----
***************
*** 161,166 ****
  	addi	a0, a1, -(16+PT_SIZE)
  
- 	/* XTFIXME:  Should we do any stack ptr checking here? */
- 
  doubleram_common:
  
--- 159,162 ----
***************
*** 1177,1209 ****
  	s32i	a3, a1, PT_EXCVADDR
  
! 	/* XTFIXME:  The following documentation is outdated.  Need to update. */
! 
! 	//  (Misc notes:)
! 	//  PS combinations:
! 	//	WINM	EXCM	WOE	What
! 	//	0	0	0	non-windowed ABI context (task or handler ...)
! 	//	0	0	1	windowed ABI context (task or handler ...)
! 	//	0	1	0	exception occurred in non-windowed context
! 	//	0	1	1	exception occurred in windowed context
! 	//	1	0	0	(should never occur)
! 	//	1	0	1	window exception occurred
! 	//	1	1	0	(should never occur)
! 	//	1	1	1	exception in window exception handler
! 
! 	//  Okay, exception state is saved, stack frame is ready, a1 is valid,
! 	//  we can set PS to exit the exception critical section (potentially
! 	//  enabling level-1 interrupts) and allow window exceptions to occur.
! 	//
! 	//  Set PS as follows:
! 	//	INTLEVEL = max(INTLEVEL,1)
! 	//	EXCM = 0
! 	//	PROGSTACK (UM) = 0 (we'd have to preserve it if staying on user stack!)
! 	//	RING = 0
! 	//	OWB = 0 (don't care)
! 	//	CALLINC = 0 (don't care)
! 	//	WOE = 1
! 	//	WINM = 0
! 	//  Unless the cause is an interrupt, then we also set intlevel to 1.
! 	//
  	rsr	a3, PS
  	movi	a2, 1
--- 1173,1191 ----
  	s32i	a3, a1, PT_EXCVADDR
  
! 	/*  Okay, exception state is saved, stack frame is ready, a1 is valid,
! 	 *  we can set PS to exit the exception critical section (potentially
! 	 *  enabling level-1 interrupts) and allow window exceptions to occur.
! 	 *
! 	 *  Set PS as follows:
! 	 *	INTLEVEL = max(INTLEVEL,1)
! 	 *	EXCM = 0
! 	 *	UM = 0 (we'd have to preserve it if staying on user stack!)
! 	 *	RING = 0
! 	 *	OWB = 0 (don't care)
! 	 *	CALLINC = 0 (don't care)
! 	 *	WOE = 1
! 	 *
! 	 *  Unless the cause is an interrupt, then we also set intlevel to 1.
! 	 */
  	rsr	a3, PS
  	movi	a2, 1
***************
*** 1626,1630 ****
  	l32i	a3, a1, PT_AREG3	// restore a3
  
- 	.global excdone		// XTFIXME:	label for development
  excdone:
  
--- 1608,1611 ----

Index: setup.c
===================================================================
RCS file: /cvsroot/xtensa/linux/arch/xtensa/kernel/setup.c,v
retrieving revision 1.6
retrieving revision 1.7
diff -C2 -d -r1.6 -r1.7
*** setup.c	11 Feb 2003 07:20:50 -0000	1.6
--- setup.c	13 Feb 2003 18:19:21 -0000	1.7
***************
*** 119,123 ****
  	meminfo_t *mi = (meminfo_t*)(tag->data);
  
- 	/* XTFIXME: only CONVENTIONAL (SDRAM) supported? */
  	if (mi->type != MEMORY_TYPE_CONVENTIONAL)
  		return -1;
--- 119,122 ----

Index: traps.c
===================================================================
RCS file: /cvsroot/xtensa/linux/arch/xtensa/kernel/traps.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -C2 -d -r1.8 -r1.9
*** traps.c	11 Feb 2003 07:22:25 -0000	1.8
--- traps.c	13 Feb 2003 18:19:21 -0000	1.9
***************
*** 284,288 ****
  		       regs->excvaddr,
  		       regs->pc,
- 		       /* XTFIXME:  Shouldn't the 0xC0000000 value come from the CHAL? */
  		       (regs->aregs[0] & 0x3FFFFFFF) | (regs->pc & 0xC0000000) );
  #endif
--- 284,287 ----