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[PULL 1/5] target/ppc/translate: Add dummy implementation for dcblc inst

From: Daniel Henrique Barboza
Subject: [PULL 1/5] target/ppc/translate: Add dummy implementation for dcblc instruction
Date: Fri, 3 Mar 2023 18:28:27 -0300

From: Bernhard Beschow <shentey@gmail.com>

The dcblc instruction is used by u-boot in mpc85xx/start.S. Without it,
an illegal istruction exception is generated very early in the boot
process where the processor is not yet able to handle exceptions. See:


Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20230130184950.5241-1-shentey@gmail.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
 target/ppc/translate.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 2956021e89..37b67d5175 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -5253,6 +5253,14 @@ static void gen_dcbtls(DisasContext *ctx)
+/* dcblc */
+static void gen_dcblc(DisasContext *ctx)
+    /*
+     * interpreted as no-op
+     */
 /* dcbz */
 static void gen_dcbz(DisasContext *ctx)
@@ -6824,6 +6832,7 @@ GEN_HANDLER_E(dcbtep, 0x1F, 0x1F, 0x09, 0x00000001, 
 GEN_HANDLER(dcbtst, 0x1F, 0x16, 0x07, 0x00000001, PPC_CACHE),
 GEN_HANDLER_E(dcbtstep, 0x1F, 0x1F, 0x07, 0x00000001, PPC_NONE, PPC2_BOOKE206),
 GEN_HANDLER_E(dcbtls, 0x1F, 0x06, 0x05, 0x02000001, PPC_BOOKE, PPC2_BOOKE206),
+GEN_HANDLER_E(dcblc, 0x1F, 0x06, 0x0c, 0x02000001, PPC_BOOKE, PPC2_BOOKE206),
 GEN_HANDLER(dcbz, 0x1F, 0x16, 0x1F, 0x03C00001, PPC_CACHE_DCBZ),
 GEN_HANDLER_E(dcbzep, 0x1F, 0x1F, 0x1F, 0x03C00001, PPC_NONE, PPC2_BOOKE206),
 GEN_HANDLER(dst, 0x1F, 0x16, 0x0A, 0x01800001, PPC_ALTIVEC),

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