[v16] Add RX architecture

[Qemu-devel] [PATCH v16 23/23] target/rx: Dump bytes for each insn during disassembly

Posted by Richard Henderson 6 years, 8 months ago

There are so many different forms of each RX instruction
that it will be very useful to be able to look at the bytes
to see on which path a bug may lie.

Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/rx/disas.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/target/rx/disas.c b/target/rx/disas.c
index 5a32a87534..d73b53db44 100644
--- a/target/rx/disas.c
+++ b/target/rx/disas.c
@@ -102,7 +102,21 @@ static int bdsp_s(DisasContext *ctx, int d)
 /* Include the auto-generated decoder.  */
 #include "decode.inc.c"
 
-#define prt(...) (ctx->dis->fprintf_func)((ctx->dis->stream), __VA_ARGS__)
+static void dump_bytes(DisasContext *ctx)
+{
+    int i, len = ctx->len;
+
+    for (i = 0; i < len; ++i) {
+        ctx->dis->fprintf_func(ctx->dis->stream, "%02x ", ctx->bytes[i]);
+    }
+    ctx->dis->fprintf_func(ctx->dis->stream, "%*c", (8 - i) * 3, '\t');
+}
+
+#define prt(...) \
+    do {                                                        \
+        dump_bytes(ctx);                                        \
+        ctx->dis->fprintf_func(ctx->dis->stream, __VA_ARGS__);  \
+    } while (0)
 
 #define RX_MEMORY_BYTE 0
 #define RX_MEMORY_WORD 1
-- 
2.17.1

Re: [Qemu-devel] [PATCH v16 23/23] target/rx: Dump bytes for each insn during disassembly

Posted by Philippe Mathieu-Daudé 6 years, 8 months ago

On 5/31/19 3:43 PM, Richard Henderson wrote:
> There are so many different forms of each RX instruction
> that it will be very useful to be able to look at the bytes
> to see on which path a bug may lie.
> 
> Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  target/rx/disas.c | 16 +++++++++++++++-
>  1 file changed, 15 insertions(+), 1 deletion(-)
> 
> diff --git a/target/rx/disas.c b/target/rx/disas.c
> index 5a32a87534..d73b53db44 100644
> --- a/target/rx/disas.c
> +++ b/target/rx/disas.c
> @@ -102,7 +102,21 @@ static int bdsp_s(DisasContext *ctx, int d)
>  /* Include the auto-generated decoder.  */
>  #include "decode.inc.c"
>  
> -#define prt(...) (ctx->dis->fprintf_func)((ctx->dis->stream), __VA_ARGS__)
> +static void dump_bytes(DisasContext *ctx)
> +{
> +    int i, len = ctx->len;
> +
> +    for (i = 0; i < len; ++i) {
> +        ctx->dis->fprintf_func(ctx->dis->stream, "%02x ", ctx->bytes[i]);
> +    }
> +    ctx->dis->fprintf_func(ctx->dis->stream, "%*c", (8 - i) * 3, '\t');
> +}
> +
> +#define prt(...) \
> +    do {                                                        \
> +        dump_bytes(ctx);                                        \
> +        ctx->dis->fprintf_func(ctx->dis->stream, __VA_ARGS__);  \
> +    } while (0)
>  
>  #define RX_MEMORY_BYTE 0
>  #define RX_MEMORY_WORD 1
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>