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[PATCH] target/mips: Fix CACHEE opcode (CACHE using EVA addressing)
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH] target/mips: Fix CACHEE opcode (CACHE using EVA addressing) |
Date: |
Tue, 20 Apr 2021 19:54:26 +0200 |
The CACHEE opcode "requires CP0 privilege".
The pseudocode checks in the ISA manual is:
if is_eva and not C0.Config5.EVA:
raise exception('RI')
if not IsCoprocessor0Enabled():
raise coprocessor_exception(0)
Add the missing checks.
Inspired-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
target/mips/translate.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/mips/translate.c b/target/mips/translate.c
index 71fa5ec1973..5dad75cdf37 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -20957,6 +20957,8 @@ static int decode_nanomips_32_48_opc(CPUMIPSState *env,
DisasContext *ctx)
gen_ld(ctx, OPC_LHUE, rt, rs, s);
break;
case NM_CACHEE:
+ check_eva(ctx);
+ check_cp0_enabled(ctx);
check_nms_dl_il_sl_tl_l2c(ctx);
gen_cache_operation(ctx, rt, rs, s);
break;
@@ -24530,11 +24532,11 @@ static void decode_opc_special3(CPUMIPSState *env,
DisasContext *ctx)
gen_st_cond(ctx, rt, rs, imm, MO_TESL, true);
return;
case OPC_CACHEE:
+ check_eva(ctx);
check_cp0_enabled(ctx);
if (ctx->hflags & MIPS_HFLAG_ITC_CACHE) {
gen_cache_operation(ctx, rt, rs, imm);
}
- /* Treat as NOP. */
return;
case OPC_PREFE:
check_cp0_enabled(ctx);
--
2.26.3
- [PATCH] target/mips: Fix CACHEE opcode (CACHE using EVA addressing),
Philippe Mathieu-Daudé <=