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bh=oos4cikuJWmbJP4CgPy9Uasl/Cfj6YBGD9U5hBoHh6Y=; b=YIvKZqI4KRliYBL1t6tLA80cje K+6YfZgFbA8wkWOxKiyN3q5LFkWEyLiINSmBCtUyQ85pkw0GgsW+7wbJ3vzDboAh8WRmscJ8RUr0p Sd7JsqOXLqEAWB3bUGwDemlplzmlvjBKYcW/dtuOyWe8lxYdYAKAGegUXoPktzQ3QdIzHhM8/jd8i OWZ1SoCbuBg1Hh3fwFu+Ufdg2YDNOM5RM8r9lqWmPtN5XyrfEUVKyLpZ8mOQq6ZuhaYujeRTj71JY 6UgAuXy0g9uSzO3IrMUQV6RTKgSbZXeasmJa2XAdw9N4f0X6Z6+tiAi4bMd2KDzcrY1aX9mfMZscO IkUZ8tZA==; From: Sven Schnelle To: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Alexandre Iooss , Mahmoud Mandour , Pierrick Bouvier Cc: qemu-devel@nongnu.org, deller@gmx.de, Sven Schnelle Subject: [PATCH 3/4] plugins/execlog: add data address match Date: Wed, 28 Feb 2024 21:02:10 +0100 Message-ID: <20240228200211.1512816-4-svens@stackframe.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240228200211.1512816-1-svens@stackframe.org> References: <20240228200211.1512816-1-svens@stackframe.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" Add a match similar to the afilter address match, but for data addresses. When an address is specified with '-dfilter=3D0x12345' only load/stores to/from address 0x12345 are printed. All other instructions are hidden. Signed-off-by: Sven Schnelle --- contrib/plugins/execlog.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c index b4b5ba113c..33fef9bfc6 100644 --- a/contrib/plugins/execlog.c +++ b/contrib/plugins/execlog.c @@ -23,9 +23,11 @@ static GRWLock expand_array_lock; =20 static GPtrArray *imatches; static GArray *amatches; +static GArray *dmatches; =20 struct execlog_ctx { GString *s; + bool log; }; =20 /* @@ -45,6 +47,17 @@ static void expand_last_exec(int cpu_index) g_rw_lock_writer_unlock(&expand_array_lock); } =20 +static bool match_vaddr(struct execlog_ctx *ctx, uint64_t vaddr) +{ + for (int i =3D 0; i < dmatches->len; i++) { + uint64_t v =3D g_array_index(dmatches, uint64_t, i); + if (v =3D=3D vaddr) { + ctx->log =3D true; + return true; + } + } + return false; +} /** * Add memory read or write information to current instruction log */ @@ -57,6 +70,9 @@ static void vcpu_mem(unsigned int cpu_index, qemu_plugin_= meminfo_t info, struct execlog_ctx *ctx =3D g_ptr_array_index(last_exec, cpu_index); g_rw_lock_reader_unlock(&expand_array_lock); =20 + if (dmatches && !match_vaddr(ctx, vaddr)) { + return; + } GString *s =3D ctx->s; /* Indicate type of memory access */ if (qemu_plugin_mem_is_store(info)) { @@ -93,7 +109,7 @@ static void vcpu_insn_exec(unsigned int cpu_index, void = *udata) GString *s =3D ctx->s; =20 /* Print previous instruction in cache */ - if (s->len) { + if (ctx->log && s->len) { qemu_plugin_outs(s->str); qemu_plugin_outs("\n"); } @@ -102,6 +118,7 @@ static void vcpu_insn_exec(unsigned int cpu_index, void= *udata) /* vcpu_mem will add memory access information to last_exec */ g_string_printf(s, "%u, ", cpu_index); g_string_append(s, (char *)udata); + ctx->log =3D dmatches ? false : true; } =20 /** @@ -190,7 +207,7 @@ static void plugin_exit(qemu_plugin_id_t id, void *p) for (i =3D 0; i < last_exec->len; i++) { struct execlog_ctx *ctx =3D g_ptr_array_index(last_exec, i); GString *s =3D ctx->s; - if (s->str) { + if (ctx->log && s->str) { qemu_plugin_outs(s->str); qemu_plugin_outs("\n"); } @@ -240,6 +257,8 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_= id_t id, parse_insn_match(tokens[1]); } else if (g_strcmp0(tokens[0], "afilter") =3D=3D 0) { parse_vaddr_match(&amatches, tokens[1]); + } else if (g_strcmp0(tokens[0], "dfilter") =3D=3D 0) { + parse_vaddr_match(&dmatches, tokens[1]); } else { fprintf(stderr, "option parsing failed: %s\n", opt); return -1; --=20 2.43.2