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authorj_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162>2007-10-26 00:48:00 +0000
committerj_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162>2007-10-26 00:48:00 +0000
commitdac454af57c6389c2e3df0b8b51a9b35429d8caa (patch)
tree61fd74c2144dc6f2c4e98474aaf2fd34028f452d /target-ppc/translate.c
parentc7697e1f51025283663c45880587d2da0af31a79 (diff)
Bugfix in PowerPC dcbi instruction:
we must do a load before the store, or we'll store random data. Update cache instructions comments. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3448 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-ppc/translate.c')
-rw-r--r--target-ppc/translate.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 54b37ac788..4c5e8c6b98 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -3618,13 +3618,10 @@ GEN_HANDLER(mtspr, 0x1F, 0x13, 0x0E, 0x00000001, PPC_MISC)
}
/*** Cache management ***/
-/* For now, all those will be implemented as nop:
- * this is valid, regarding the PowerPC specs...
- * We just have to flush tb while invalidating instruction cache lines...
- */
/* dcbf */
GEN_HANDLER(dcbf, 0x1F, 0x16, 0x02, 0x03C00001, PPC_CACHE)
{
+ /* XXX: specification says this is treated as a load by the MMU */
gen_addr_reg_index(ctx);
op_ldst(lbz);
}
@@ -3641,7 +3638,7 @@ GEN_HANDLER(dcbi, 0x1F, 0x16, 0x0E, 0x03E00001, PPC_CACHE)
}
gen_addr_reg_index(ctx);
/* XXX: specification says this should be treated as a store by the MMU */
- //op_ldst(lbz);
+ op_ldst(lbz);
op_ldst(stb);
#endif
}