xtensa: reorganize SR referencing
- reference SRs by names where possible, not by numbers;
- get rid of __stringify around SR names where possible;
- remove unneeded SR names from asm/regs.h;
- add SREG_ prefix to remaining SR names;
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
index 3ef91a7..bdc5078 100644
--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -61,18 +61,18 @@
/* Disable interrupts and exceptions. */
movi a0, LOCKLEVEL
- wsr a0, PS
+ wsr a0, ps
/* Preserve the pointer to the boot parameter list in EXCSAVE_1 */
- wsr a2, EXCSAVE_1
+ wsr a2, excsave1
/* Start with a fresh windowbase and windowstart. */
movi a1, 1
movi a0, 0
- wsr a1, WINDOWSTART
- wsr a0, WINDOWBASE
+ wsr a1, windowstart
+ wsr a0, windowbase
rsync
/* Set a0 to 0 for the remaining initialization. */
@@ -82,46 +82,46 @@
/* Clear debugging registers. */
#if XCHAL_HAVE_DEBUG
- wsr a0, IBREAKENABLE
- wsr a0, ICOUNT
+ wsr a0, ibreakenable
+ wsr a0, icount
movi a1, 15
- wsr a0, ICOUNTLEVEL
+ wsr a0, icountlevel
.set _index, 0
.rept XCHAL_NUM_DBREAK - 1
- wsr a0, DBREAKC + _index
+ wsr a0, SREG_DBREAKC + _index
.set _index, _index + 1
.endr
#endif
/* Clear CCOUNT (not really necessary, but nice) */
- wsr a0, CCOUNT # not really necessary, but nice
+ wsr a0, ccount # not really necessary, but nice
/* Disable zero-loops. */
#if XCHAL_HAVE_LOOPS
- wsr a0, LCOUNT
+ wsr a0, lcount
#endif
/* Disable all timers. */
.set _index, 0
.rept XCHAL_NUM_TIMERS - 1
- wsr a0, CCOMPARE + _index
+ wsr a0, SREG_CCOMPARE + _index
.set _index, _index + 1
.endr
/* Interrupt initialization. */
movi a2, XCHAL_INTTYPE_MASK_SOFTWARE | XCHAL_INTTYPE_MASK_EXTERN_EDGE
- wsr a0, INTENABLE
- wsr a2, INTCLEAR
+ wsr a0, intenable
+ wsr a2, intclear
/* Disable coprocessors. */
#if XCHAL_CP_NUM > 0
- wsr a0, CPENABLE
+ wsr a0, cpenable
#endif
/* Set PS.INTLEVEL=1, PS.WOE=0, kernel stack, PS.EXCM=0
@@ -132,7 +132,7 @@
*/
movi a1, 1
- wsr a1, PS
+ wsr a1, ps
rsync
/* Initialize the caches.
@@ -206,18 +206,18 @@
addi a1, a1, KERNEL_STACK_SIZE
movi a2, 0x00040001 # WOE=1, INTLEVEL=1, UM=0
- wsr a2, PS # (enable reg-windows; progmode stack)
+ wsr a2, ps # (enable reg-windows; progmode stack)
rsync
/* Set up EXCSAVE[DEBUGLEVEL] to point to the Debug Exception Handler.*/
movi a2, debug_exception
- wsr a2, EXCSAVE + XCHAL_DEBUGLEVEL
+ wsr a2, SREG_EXCSAVE + XCHAL_DEBUGLEVEL
/* Set up EXCSAVE[1] to point to the exc_table. */
movi a6, exc_table
- xsr a6, EXCSAVE_1
+ xsr a6, excsave1
/* init_arch kick-starts the linux kernel */