DrSocalkwe3n/luajit
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

PPC: Use builtin D-Cache/I-Cache sync code.

Browse Source
This commit is contained in:
Mike Pall
2012-03-29 01:12:54 +02:00
parent a53a549774
commit 1980ee95b0
4 changed files with 522 additions and 484 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
src/buildvm_ppc.dasc
View File

@@ -2533,6 +2533,31 @@ static void build_subroutines(BuildCtx *ctx)
|//-- Miscellaneous functions --------------------------------------------
|//-----------------------------------------------------------------------
|
|// void lj_vm_cachesync(void *start, void *end)
|// Flush D-Cache and invalidate I-Cache. Assumes 32 byte cache line size.
|// This is a good lower bound, except for very ancient PPC models.
|->vm_cachesync:
| // Compute start of first cache line and number of cache lines.
| rlwinm CARG1, CARG1, 0, 0, 26
| sub CARG2, CARG2, CARG1
| addi CARG2, CARG2, 31
| rlwinm. CARG2, CARG2, 27, 5, 31
| beqlr
| mtctr CARG2
| mr CARG3, CARG1
|1: // Flush D-Cache.
| dcbst r0, CARG1
| addi CARG1, CARG1, 32
| bdnz <1
| sync
| mtctr CARG2
|1: // Invalidate I-Cache.
| icbi r0, CARG3
| addi CARG3, CARG3, 32
| bdnz <1
| isync
| blr
|
|//-----------------------------------------------------------------------
|//-- FFI helper functions -----------------------------------------------
|//-----------------------------------------------------------------------