From: Yongbok Kim <[email protected]> MFHC0 and MTHC0 used to handle EntryLo0 and EntryLo1 registers only, and placing ELPA flag checks before switch statement were technically correct. However, after adding handling more registers, these checks should be moved to act only in cases of handling EntryLo0 and EntryLo1.
Reviewed-by: Aleksandar Markovic <[email protected]> Reviewed-by: Richard Henderson <[email protected]> Signed-off-by: Yongbok Kim <[email protected]> Signed-off-by: Aleksandar Markovic <[email protected]> --- target/mips/translate.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/target/mips/translate.c b/target/mips/translate.c index 841c0c8..bc1f21f 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -4896,12 +4896,11 @@ static void gen_mfhc0(DisasContext *ctx, TCGv arg, int reg, int sel) { const char *rn = "invalid"; - CP0_CHECK(ctx->hflags & MIPS_HFLAG_ELPA); - switch (reg) { case 2: switch (sel) { case 0: + CP0_CHECK(ctx->hflags & MIPS_HFLAG_ELPA); gen_mfhc0_entrylo(arg, offsetof(CPUMIPSState, CP0_EntryLo0)); rn = "EntryLo0"; break; @@ -4912,6 +4911,7 @@ static void gen_mfhc0(DisasContext *ctx, TCGv arg, int reg, int sel) case 3: switch (sel) { case 0: + CP0_CHECK(ctx->hflags & MIPS_HFLAG_ELPA); gen_mfhc0_entrylo(arg, offsetof(CPUMIPSState, CP0_EntryLo1)); rn = "EntryLo1"; break; @@ -4964,12 +4964,11 @@ static void gen_mthc0(DisasContext *ctx, TCGv arg, int reg, int sel) const char *rn = "invalid"; uint64_t mask = ctx->PAMask >> 36; - CP0_CHECK(ctx->hflags & MIPS_HFLAG_ELPA); - switch (reg) { case 2: switch (sel) { case 0: + CP0_CHECK(ctx->hflags & MIPS_HFLAG_ELPA); tcg_gen_andi_tl(arg, arg, mask); gen_mthc0_entrylo(arg, offsetof(CPUMIPSState, CP0_EntryLo0)); rn = "EntryLo0"; @@ -4981,6 +4980,7 @@ static void gen_mthc0(DisasContext *ctx, TCGv arg, int reg, int sel) case 3: switch (sel) { case 0: + CP0_CHECK(ctx->hflags & MIPS_HFLAG_ELPA); tcg_gen_andi_tl(arg, arg, mask); gen_mthc0_entrylo(arg, offsetof(CPUMIPSState, CP0_EntryLo1)); rn = "EntryLo1"; -- 2.7.4
