From 4d09d5291dac27b48fd597c72de6fddaa4d74571 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Sun, 19 Jan 2014 17:50:09 +0100 Subject: [PATCH] PPC: Add dcbtls emulation The dcbtls instruction is able to lock data inside the L1 cache. Unfortunately we don't emulate any caches, so we have to tell the guest that its locking attempt failed. However, by implementing the instruction we at least don't give the guest a program exception which it definitely does not expect. Signed-off-by: Alexander Graf --- target-ppc/translate.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 7be776f161..a2402835eb 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -4481,6 +4481,17 @@ static void gen_dcbtst(DisasContext *ctx) */ } +/* dcbtls */ +static void gen_dcbtls(DisasContext *ctx) +{ + /* Always fails locking the cache */ + TCGv t0 = tcg_temp_new(); + gen_load_spr(t0, SPR_Exxx_L1CSR0); + tcg_gen_ori_tl(t0, t0, L1CSR0_CUL); + gen_store_spr(SPR_Exxx_L1CSR0, t0); + tcg_temp_free(t0); +} + /* dcbz */ static void gen_dcbz(DisasContext *ctx) { @@ -10215,6 +10226,7 @@ GEN_HANDLER(dcbi, 0x1F, 0x16, 0x0E, 0x03E00001, PPC_CACHE), GEN_HANDLER(dcbst, 0x1F, 0x16, 0x01, 0x03E00001, PPC_CACHE), GEN_HANDLER(dcbt, 0x1F, 0x16, 0x08, 0x00000001, PPC_CACHE), GEN_HANDLER(dcbtst, 0x1F, 0x16, 0x07, 0x00000001, PPC_CACHE), +GEN_HANDLER_E(dcbtls, 0x1F, 0x06, 0x05, 0x02000001, PPC_BOOKE, PPC2_BOOKE206), GEN_HANDLER(dcbz, 0x1F, 0x16, 0x1F, 0x03C00001, PPC_CACHE_DCBZ), GEN_HANDLER(dst, 0x1F, 0x16, 0x0A, 0x01800001, PPC_ALTIVEC), GEN_HANDLER(dstst, 0x1F, 0x16, 0x0B, 0x02000001, PPC_ALTIVEC),