0163ce3179
Made argument "inline" not positional, this has two benefits. First is that we adhere to how QEMU passes args generally, by taking the last value of an argument and drop the others. And the second is that this sets up a framework for potentially adding new args easily. Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210730135817.17816-11-ma.mandourr@gmail.com> [AJB: fix check-tcg tests calling arg=inline] Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* Copyright (C) 2018, Emilio G. Cota <cota@braap.org>
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*
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* License: GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include <inttypes.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <glib.h>
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#include <qemu-plugin.h>
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QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
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static uint64_t insn_count;
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static bool do_inline;
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static void vcpu_insn_exec_before(unsigned int cpu_index, void *udata)
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{
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static uint64_t last_pc;
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uint64_t this_pc = GPOINTER_TO_UINT(udata);
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if (this_pc == last_pc) {
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g_autofree gchar *out = g_strdup_printf("detected repeat execution @ 0x%"
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PRIx64 "\n", this_pc);
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qemu_plugin_outs(out);
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}
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last_pc = this_pc;
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insn_count++;
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}
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static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
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{
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size_t n = qemu_plugin_tb_n_insns(tb);
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size_t i;
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for (i = 0; i < n; i++) {
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struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i);
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if (do_inline) {
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qemu_plugin_register_vcpu_insn_exec_inline(
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insn, QEMU_PLUGIN_INLINE_ADD_U64, &insn_count, 1);
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} else {
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uint64_t vaddr = qemu_plugin_insn_vaddr(insn);
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qemu_plugin_register_vcpu_insn_exec_cb(
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insn, vcpu_insn_exec_before, QEMU_PLUGIN_CB_NO_REGS,
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GUINT_TO_POINTER(vaddr));
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}
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}
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}
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static void plugin_exit(qemu_plugin_id_t id, void *p)
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{
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g_autofree gchar *out = g_strdup_printf("insns: %" PRIu64 "\n", insn_count);
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qemu_plugin_outs(out);
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}
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QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
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const qemu_info_t *info,
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int argc, char **argv)
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{
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for (int i = 0; i < argc; i++) {
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char *opt = argv[i];
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g_autofree char **tokens = g_strsplit(opt, "=", 2);
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if (g_strcmp0(tokens[0], "inline") == 0) {
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if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_inline)) {
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fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
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return -1;
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}
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} else {
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fprintf(stderr, "option parsing failed: %s\n", opt);
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return -1;
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}
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}
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qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans);
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qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
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return 0;
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}
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