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target-xtensa: restrict available SRs by enabled options

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Beginning with the RA-2004.1 release, SR access instructions (rsr, wsr,
xsr) are associated with their corresponding SR and raise illegal opcode
exception in case the register is not configured for the core.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Max Filippov 2012-12-05 07:15:22 +04:00 • committed by Blue Swirl
parent 4e41d2f583
commit fe0bd475aa
3 changed files with 130 additions and 105 deletions
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4
target-xtensa/overlay_tool.h
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@ -94,7 +94,9 @@
XCHAL_OPTION(XCHAL_HAVE_CACHEATTR, XTENSA_OPTION_CACHEATTR) | \
/* Other, TODO */ \
XCHAL_OPTION(XCHAL_HAVE_WINDOWED, XTENSA_OPTION_WINDOWED_REGISTER) | \
XCHAL_OPTION(XCHAL_HAVE_DEBUG, XTENSA_OPTION_DEBUG))
XCHAL_OPTION(XCHAL_HAVE_DEBUG, XTENSA_OPTION_DEBUG) |\
XCHAL_OPTION(XCHAL_HAVE_THREADPTR, XTENSA_OPTION_THREAD_POINTER) | \
XCHAL_OPTION(XCHAL_HAVE_PRID, XTENSA_OPTION_PROCESSOR_ID))
#ifndef XCHAL_WINDOW_OF4_VECOFS
#define XCHAL_WINDOW_OF4_VECOFS 0x00000000