diff options
Diffstat (limited to 'tests/tcg/plugins/inline.c')
| -rw-r--r-- | tests/tcg/plugins/inline.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/tests/tcg/plugins/inline.c b/tests/tcg/plugins/inline.c new file mode 100644 index 0000000..73dde99 --- /dev/null +++ b/tests/tcg/plugins/inline.c @@ -0,0 +1,310 @@ +/* + * Copyright (C) 2023, Pierrick Bouvier <pierrick.bouvier@linaro.org> + * + * Demonstrates and tests usage of inline ops. + * + * License: GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include <glib.h> +#include <stdint.h> +#include <stdio.h> + +#include <qemu-plugin.h> + +typedef struct { + uint64_t count_tb; + uint64_t count_tb_inline; + uint64_t count_insn; + uint64_t count_insn_inline; + uint64_t count_mem; + uint64_t count_mem_inline; + uint64_t tb_cond_num_trigger; + uint64_t tb_cond_track_count; + uint64_t insn_cond_num_trigger; + uint64_t insn_cond_track_count; +} CPUCount; + +static const uint64_t cond_trigger_limit = 100; + +typedef struct { + uint64_t data_insn; + uint64_t data_tb; + uint64_t data_mem; +} CPUData; + +static struct qemu_plugin_scoreboard *counts; +static qemu_plugin_u64 count_tb; +static qemu_plugin_u64 count_tb_inline; +static qemu_plugin_u64 count_insn; +static qemu_plugin_u64 count_insn_inline; +static qemu_plugin_u64 count_mem; +static qemu_plugin_u64 count_mem_inline; +static qemu_plugin_u64 tb_cond_num_trigger; +static qemu_plugin_u64 tb_cond_track_count; +static qemu_plugin_u64 insn_cond_num_trigger; +static qemu_plugin_u64 insn_cond_track_count; +static struct qemu_plugin_scoreboard *data; +static qemu_plugin_u64 data_insn; +static qemu_plugin_u64 data_tb; +static qemu_plugin_u64 data_mem; + +static uint64_t global_count_tb; +static uint64_t global_count_insn; +static uint64_t global_count_mem; +static unsigned int max_cpu_index; +static GMutex tb_lock; +static GMutex insn_lock; +static GMutex mem_lock; + +QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION; + +static void stats_insn(void) +{ + const uint64_t expected = global_count_insn; + const uint64_t per_vcpu = qemu_plugin_u64_sum(count_insn); + const uint64_t inl_per_vcpu = + qemu_plugin_u64_sum(count_insn_inline); + const uint64_t cond_num_trigger = + qemu_plugin_u64_sum(insn_cond_num_trigger); + const uint64_t cond_track_left = qemu_plugin_u64_sum(insn_cond_track_count); + const uint64_t conditional = + cond_num_trigger * cond_trigger_limit + cond_track_left; + g_autoptr(GString) stats = g_string_new(""); + g_string_append_printf(stats, "insn: %" PRIu64 "\n", expected); + g_string_append_printf(stats, "insn: %" PRIu64 " (per vcpu)\n", per_vcpu); + g_string_append_printf(stats, "insn: %" PRIu64 " (per vcpu inline)\n", inl_per_vcpu); + g_string_append_printf(stats, "insn: %" PRIu64 " (cond cb)\n", conditional); + qemu_plugin_outs(stats->str); + g_assert(expected > 0); + g_assert(per_vcpu == expected); + g_assert(inl_per_vcpu == expected); + g_assert(conditional == expected); +} + +static void stats_tb(void) +{ + const uint64_t expected = global_count_tb; + const uint64_t per_vcpu = qemu_plugin_u64_sum(count_tb); + const uint64_t inl_per_vcpu = + qemu_plugin_u64_sum(count_tb_inline); + const uint64_t cond_num_trigger = qemu_plugin_u64_sum(tb_cond_num_trigger); + const uint64_t cond_track_left = qemu_plugin_u64_sum(tb_cond_track_count); + const uint64_t conditional = + cond_num_trigger * cond_trigger_limit + cond_track_left; + g_autoptr(GString) stats = g_string_new(""); + g_string_append_printf(stats, "tb: %" PRIu64 "\n", expected); + g_string_append_printf(stats, "tb: %" PRIu64 " (per vcpu)\n", per_vcpu); + g_string_append_printf(stats, "tb: %" PRIu64 " (per vcpu inline)\n", inl_per_vcpu); + g_string_append_printf(stats, "tb: %" PRIu64 " (conditional cb)\n", conditional); + qemu_plugin_outs(stats->str); + g_assert(expected > 0); + g_assert(per_vcpu == expected); + g_assert(inl_per_vcpu == expected); + g_assert(conditional == expected); +} + +static void stats_mem(void) +{ + const uint64_t expected = global_count_mem; + const uint64_t per_vcpu = qemu_plugin_u64_sum(count_mem); + const uint64_t inl_per_vcpu = + qemu_plugin_u64_sum(count_mem_inline); + g_autoptr(GString) stats = g_string_new(""); + g_string_append_printf(stats, "mem: %" PRIu64 "\n", expected); + g_string_append_printf(stats, "mem: %" PRIu64 " (per vcpu)\n", per_vcpu); + g_string_append_printf(stats, "mem: %" PRIu64 " (per vcpu inline)\n", inl_per_vcpu); + qemu_plugin_outs(stats->str); + g_assert(expected > 0); + g_assert(per_vcpu == expected); + g_assert(inl_per_vcpu == expected); +} + +static void plugin_exit(qemu_plugin_id_t id, void *udata) +{ + const unsigned int num_cpus = qemu_plugin_num_vcpus(); + g_autoptr(GString) stats = g_string_new(""); + g_assert(num_cpus == max_cpu_index + 1); + + for (int i = 0; i < num_cpus ; ++i) { + const uint64_t tb = qemu_plugin_u64_get(count_tb, i); + const uint64_t tb_inline = qemu_plugin_u64_get(count_tb_inline, i); + const uint64_t insn = qemu_plugin_u64_get(count_insn, i); + const uint64_t insn_inline = qemu_plugin_u64_get(count_insn_inline, i); + const uint64_t mem = qemu_plugin_u64_get(count_mem, i); + const uint64_t mem_inline = qemu_plugin_u64_get(count_mem_inline, i); + const uint64_t tb_cond_trigger = + qemu_plugin_u64_get(tb_cond_num_trigger, i); + const uint64_t tb_cond_left = + qemu_plugin_u64_get(tb_cond_track_count, i); + const uint64_t insn_cond_trigger = + qemu_plugin_u64_get(insn_cond_num_trigger, i); + const uint64_t insn_cond_left = + qemu_plugin_u64_get(insn_cond_track_count, i); + g_string_printf(stats, "cpu %d: tb (%" PRIu64 ", %" PRIu64 + ", %" PRIu64 " * %" PRIu64 " + %" PRIu64 + ") | " + "insn (%" PRIu64 ", %" PRIu64 + ", %" PRIu64 " * %" PRIu64 " + %" PRIu64 + ") | " + "mem (%" PRIu64 ", %" PRIu64 ")" + "\n", + i, + tb, tb_inline, + tb_cond_trigger, cond_trigger_limit, tb_cond_left, + insn, insn_inline, + insn_cond_trigger, cond_trigger_limit, insn_cond_left, + mem, mem_inline); + qemu_plugin_outs(stats->str); + g_assert(tb == tb_inline); + g_assert(insn == insn_inline); + g_assert(mem == mem_inline); + g_assert(tb_cond_trigger == tb / cond_trigger_limit); + g_assert(tb_cond_left == tb % cond_trigger_limit); + g_assert(insn_cond_trigger == insn / cond_trigger_limit); + g_assert(insn_cond_left == insn % cond_trigger_limit); + } + + stats_tb(); + stats_insn(); + stats_mem(); + + qemu_plugin_scoreboard_free(counts); + qemu_plugin_scoreboard_free(data); +} + +static void vcpu_tb_exec(unsigned int cpu_index, void *udata) +{ + qemu_plugin_u64_add(count_tb, cpu_index, 1); + g_assert(qemu_plugin_u64_get(data_tb, cpu_index) == (uintptr_t) udata); + g_mutex_lock(&tb_lock); + max_cpu_index = MAX(max_cpu_index, cpu_index); + global_count_tb++; + g_mutex_unlock(&tb_lock); +} + +static void vcpu_tb_cond_exec(unsigned int cpu_index, void *udata) +{ + g_assert(qemu_plugin_u64_get(tb_cond_track_count, cpu_index) == + cond_trigger_limit); + g_assert(qemu_plugin_u64_get(data_tb, cpu_index) == (uintptr_t) udata); + qemu_plugin_u64_set(tb_cond_track_count, cpu_index, 0); + qemu_plugin_u64_add(tb_cond_num_trigger, cpu_index, 1); +} + +static void vcpu_insn_cond_exec(unsigned int cpu_index, void *udata) +{ + g_assert(qemu_plugin_u64_get(insn_cond_track_count, cpu_index) == + cond_trigger_limit); + g_assert(qemu_plugin_u64_get(data_insn, cpu_index) == (uintptr_t) udata); + qemu_plugin_u64_set(insn_cond_track_count, cpu_index, 0); + qemu_plugin_u64_add(insn_cond_num_trigger, cpu_index, 1); +} + +static void vcpu_insn_exec(unsigned int cpu_index, void *udata) +{ + qemu_plugin_u64_add(count_insn, cpu_index, 1); + g_assert(qemu_plugin_u64_get(data_insn, cpu_index) == (uintptr_t) udata); + g_mutex_lock(&insn_lock); + global_count_insn++; + g_mutex_unlock(&insn_lock); +} + +static void vcpu_mem_access(unsigned int cpu_index, + qemu_plugin_meminfo_t info, + uint64_t vaddr, + void *udata) +{ + qemu_plugin_u64_add(count_mem, cpu_index, 1); + g_assert(qemu_plugin_u64_get(data_mem, cpu_index) == (uintptr_t) udata); + g_mutex_lock(&mem_lock); + global_count_mem++; + g_mutex_unlock(&mem_lock); +} + +static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) +{ + void *tb_store = tb; + qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu( + tb, QEMU_PLUGIN_INLINE_STORE_U64, data_tb, (uintptr_t) tb_store); + qemu_plugin_register_vcpu_tb_exec_cb( + tb, vcpu_tb_exec, QEMU_PLUGIN_CB_NO_REGS, tb_store); + qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu( + tb, QEMU_PLUGIN_INLINE_ADD_U64, count_tb_inline, 1); + + qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu( + tb, QEMU_PLUGIN_INLINE_ADD_U64, tb_cond_track_count, 1); + qemu_plugin_register_vcpu_tb_exec_cond_cb( + tb, vcpu_tb_cond_exec, QEMU_PLUGIN_CB_NO_REGS, + QEMU_PLUGIN_COND_EQ, tb_cond_track_count, cond_trigger_limit, tb_store); + + for (int idx = 0; idx < qemu_plugin_tb_n_insns(tb); ++idx) { + struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, idx); + void *insn_store = insn; + void *mem_store = (char *)insn_store + 0xff; + + qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu( + insn, QEMU_PLUGIN_INLINE_STORE_U64, data_insn, + (uintptr_t) insn_store); + qemu_plugin_register_vcpu_insn_exec_cb( + insn, vcpu_insn_exec, QEMU_PLUGIN_CB_NO_REGS, insn_store); + qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu( + insn, QEMU_PLUGIN_INLINE_ADD_U64, count_insn_inline, 1); + + qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu( + insn, QEMU_PLUGIN_INLINE_ADD_U64, insn_cond_track_count, 1); + qemu_plugin_register_vcpu_insn_exec_cond_cb( + insn, vcpu_insn_cond_exec, QEMU_PLUGIN_CB_NO_REGS, + QEMU_PLUGIN_COND_EQ, insn_cond_track_count, cond_trigger_limit, + insn_store); + + qemu_plugin_register_vcpu_mem_inline_per_vcpu( + insn, QEMU_PLUGIN_MEM_RW, + QEMU_PLUGIN_INLINE_STORE_U64, + data_mem, (uintptr_t) mem_store); + qemu_plugin_register_vcpu_mem_cb(insn, &vcpu_mem_access, + QEMU_PLUGIN_CB_NO_REGS, + QEMU_PLUGIN_MEM_RW, mem_store); + qemu_plugin_register_vcpu_mem_inline_per_vcpu( + insn, QEMU_PLUGIN_MEM_RW, + QEMU_PLUGIN_INLINE_ADD_U64, + count_mem_inline, 1); + } +} + +QEMU_PLUGIN_EXPORT +int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info, + int argc, char **argv) +{ + counts = qemu_plugin_scoreboard_new(sizeof(CPUCount)); + count_tb = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, count_tb); + count_insn = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, count_insn); + count_mem = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, count_mem); + count_tb_inline = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, count_tb_inline); + count_insn_inline = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, count_insn_inline); + count_mem_inline = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, count_mem_inline); + tb_cond_num_trigger = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, tb_cond_num_trigger); + tb_cond_track_count = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, tb_cond_track_count); + insn_cond_num_trigger = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, insn_cond_num_trigger); + insn_cond_track_count = qemu_plugin_scoreboard_u64_in_struct( + counts, CPUCount, insn_cond_track_count); + data = qemu_plugin_scoreboard_new(sizeof(CPUData)); + data_insn = qemu_plugin_scoreboard_u64_in_struct(data, CPUData, data_insn); + data_tb = qemu_plugin_scoreboard_u64_in_struct(data, CPUData, data_tb); + data_mem = qemu_plugin_scoreboard_u64_in_struct(data, CPUData, data_mem); + + qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); + qemu_plugin_register_atexit_cb(id, plugin_exit, NULL); + + return 0; +} |