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[Xtensa] always flush trampolines from data cache
- From: Bob Wilson <bwilson at tensilica dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Thu, 10 Apr 2003 10:02:36 -0700
- Subject: [Xtensa] always flush trampolines from data cache
- Organization: Tensilica, Inc.
This patch changes the Xtensa code in libgcc used when initializing
trampolines to always flush the data cache, even if the cache is configured
to be write-through. This allows the cache to be reconfigured without
rebuilding libgcc. Committed on mainline.
2003-04-10 Bob Wilson <bob dot wilson at acm dot org>
* config/xtensa/lib2funcs.S (__xtensa_sync_caches): Flush data cache
even if it is configured to be write-through.
Index: lib2funcs.S
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/xtensa/lib2funcs.S,v
retrieving revision 1.3
diff -c -3 -r1.3 lib2funcs.S
*** lib2funcs.S 19 Apr 2002 00:31:17 -0000 1.3
--- lib2funcs.S 10 Apr 2003 16:54:03 -0000
***************
*** 159,165 ****
.type __xtensa_sync_caches,@function
__xtensa_sync_caches:
entry sp, 32
! #if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_IS_WRITEBACK
# Flush the trampoline from the data cache
extui a4, a2, 0, XCHAL_DCACHE_LINEWIDTH
addi a4, a4, TRAMPOLINE_SIZE
--- 159,165 ----
.type __xtensa_sync_caches,@function
__xtensa_sync_caches:
entry sp, 32
! #if XCHAL_DCACHE_SIZE > 0
# Flush the trampoline from the data cache
extui a4, a2, 0, XCHAL_DCACHE_LINEWIDTH
addi a4, a4, TRAMPOLINE_SIZE