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([102.35.208.160]) by smtp.gmail.com with ESMTPSA id u12-20020a5d6acc000000b0033e7a499deasm6108795wrw.109.2024.03.12.00.54.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Mar 2024 00:54:55 -0700 (PDT) From: Pierrick Bouvier To: qemu-devel@nongnu.org Cc: Alexandre Iooss , Pierrick Bouvier , Mahmoud Mandour , Paolo Bonzini , =?utf-8?q?Alex_Benn=C3=A9e?= , Richard Henderson Subject: [PATCH v2 2/5] plugins: add new inline op STORE_U64 Date: Tue, 12 Mar 2024 11:54:25 +0400 Message-Id: <20240312075428.244210-3-pierrick.bouvier@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240312075428.244210-1-pierrick.bouvier@linaro.org> References: <20240312075428.244210-1-pierrick.bouvier@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::42d; envelope-from=pierrick.bouvier@linaro.org; helo=mail-wr1-x42d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Signed-off-by: Pierrick Bouvier --- include/qemu/plugin.h | 1 + include/qemu/qemu-plugin.h | 4 +- accel/tcg/plugin-gen.c | 114 ++++++++++++++++++++++++++++++++++++- plugins/api.c | 2 + plugins/core.c | 4 ++ 5 files changed, 120 insertions(+), 5 deletions(-) diff --git a/include/qemu/plugin.h b/include/qemu/plugin.h index 33a7cbe910c..d92d64744e6 100644 --- a/include/qemu/plugin.h +++ b/include/qemu/plugin.h @@ -75,6 +75,7 @@ enum plugin_dyn_cb_subtype { PLUGIN_CB_REGULAR, PLUGIN_CB_REGULAR_R, PLUGIN_CB_INLINE_ADD_U64, + PLUGIN_CB_INLINE_STORE_U64, PLUGIN_N_CB_SUBTYPES, }; diff --git a/include/qemu/qemu-plugin.h b/include/qemu/qemu-plugin.h index 4fc6c3739b2..c5cac897a0b 100644 --- a/include/qemu/qemu-plugin.h +++ b/include/qemu/qemu-plugin.h @@ -305,12 +305,12 @@ void qemu_plugin_register_vcpu_tb_exec_cb(struct qemu_plugin_tb *tb, * enum qemu_plugin_op - describes an inline op * * @QEMU_PLUGIN_INLINE_ADD_U64: add an immediate value uint64_t - * - * Note: currently only a single inline op is supported. + * @QEMU_PLUGIN_INLINE_STORE_U64: store an immediate value uint64_t */ enum qemu_plugin_op { QEMU_PLUGIN_INLINE_ADD_U64, + QEMU_PLUGIN_INLINE_STORE_U64, }; /** diff --git a/accel/tcg/plugin-gen.c b/accel/tcg/plugin-gen.c index 494467e0833..02c894106e2 100644 --- a/accel/tcg/plugin-gen.c +++ b/accel/tcg/plugin-gen.c @@ -46,8 +46,9 @@ #include "qemu/plugin.h" #include "cpu.h" #include "tcg/tcg.h" -#include "tcg/tcg-temp-internal.h" +#include "tcg/tcg-internal.h" #include "tcg/tcg-op.h" +#include "tcg/tcg-temp-internal.h" #include "exec/exec-all.h" #include "exec/plugin-gen.h" #include "exec/translator.h" @@ -82,6 +83,7 @@ enum plugin_gen_cb { PLUGIN_GEN_CB_UDATA, PLUGIN_GEN_CB_UDATA_R, PLUGIN_GEN_CB_INLINE_ADD_U64, + PLUGIN_GEN_CB_INLINE_STORE_U64, PLUGIN_GEN_CB_MEM, PLUGIN_GEN_ENABLE_MEM_HELPER, PLUGIN_GEN_DISABLE_MEM_HELPER, @@ -153,6 +155,30 @@ static void gen_empty_inline_cb_add_u64(void) tcg_temp_free_i32(cpu_index); } +static void gen_empty_inline_cb_store_u64(void) +{ + TCGv_i32 cpu_index = tcg_temp_ebb_new_i32(); + TCGv_ptr cpu_index_as_ptr = tcg_temp_ebb_new_ptr(); + TCGv_i64 val = tcg_temp_ebb_new_i64(); + TCGv_ptr ptr = tcg_temp_ebb_new_ptr(); + + tcg_gen_ld_i32(cpu_index, tcg_env, + -offsetof(ArchCPU, env) + offsetof(CPUState, cpu_index)); + /* second operand will be replaced by immediate value */ + tcg_gen_mul_i32(cpu_index, cpu_index, cpu_index); + tcg_gen_ext_i32_ptr(cpu_index_as_ptr, cpu_index); + tcg_gen_movi_ptr(ptr, 0); + tcg_gen_add_ptr(ptr, ptr, cpu_index_as_ptr); + + tcg_gen_movi_i64(val, 0); + tcg_gen_st_i64(val, ptr, 0); + + tcg_temp_free_ptr(ptr); + tcg_temp_free_i64(val); + tcg_temp_free_ptr(cpu_index_as_ptr); + tcg_temp_free_i32(cpu_index); +} + static void gen_empty_mem_cb(TCGv_i64 addr, uint32_t info) { TCGv_i32 cpu_index = tcg_temp_ebb_new_i32(); @@ -218,6 +244,8 @@ static void plugin_gen_empty_callback(enum plugin_gen_from from) /* emit inline op before any callback */ gen_wrapped(from, PLUGIN_GEN_CB_INLINE_ADD_U64, gen_empty_inline_cb_add_u64); + gen_wrapped(from, PLUGIN_GEN_CB_INLINE_STORE_U64, + gen_empty_inline_cb_store_u64); gen_wrapped(from, PLUGIN_GEN_CB_UDATA, gen_empty_udata_cb_no_rwg); gen_wrapped(from, PLUGIN_GEN_CB_UDATA_R, gen_empty_udata_cb_no_wg); break; @@ -235,6 +263,11 @@ void plugin_gen_empty_mem_callback(TCGv_i64 addr, uint32_t info) gen_empty_inline_cb_add_u64(); tcg_gen_plugin_cb_end(); + gen_plugin_cb_start(PLUGIN_GEN_FROM_MEM, + PLUGIN_GEN_CB_INLINE_STORE_U64, rw); + gen_empty_inline_cb_store_u64(); + tcg_gen_plugin_cb_end(); + gen_plugin_cb_start(PLUGIN_GEN_FROM_MEM, PLUGIN_GEN_CB_MEM, rw); gen_empty_mem_cb(addr, info); tcg_gen_plugin_cb_end(); @@ -352,6 +385,20 @@ static TCGOp *copy_st_i64(TCGOp **begin_op, TCGOp *op) return op; } +static TCGOp *copy_mov_i64(TCGOp **begin_op, TCGOp *op, uint64_t v) +{ + if (TCG_TARGET_REG_BITS == 32) { + op = copy_op(begin_op, op, INDEX_op_mov_i32); + op->args[1] = tcgv_i32_arg(TCGV_LOW(tcg_constant_i64(v))); + op = copy_op(begin_op, op, INDEX_op_mov_i32); + op->args[1] = tcgv_i32_arg(TCGV_HIGH(tcg_constant_i64(v))); + } else { + op = copy_op(begin_op, op, INDEX_op_mov_i64); + op->args[1] = tcgv_i64_arg(tcg_constant_i64(v)); + } + return op; +} + static TCGOp *copy_add_i64(TCGOp **begin_op, TCGOp *op, uint64_t v) { if (TCG_TARGET_REG_BITS == 32) { @@ -455,6 +502,24 @@ static TCGOp *append_inline_cb_add_u64(const struct qemu_plugin_dyn_cb *cb, return op; } +static TCGOp *append_inline_cb_store_u64(const struct qemu_plugin_dyn_cb *cb, + TCGOp *begin_op, TCGOp *op, + int *unused) +{ + char *ptr = cb->inline_insn.entry.score->data->data; + size_t elem_size = g_array_get_element_size( + cb->inline_insn.entry.score->data); + size_t offset = cb->inline_insn.entry.offset; + op = copy_ld_i32(&begin_op, op); + op = copy_mul_i32(&begin_op, op, elem_size); + op = copy_ext_i32_ptr(&begin_op, op); + op = copy_const_ptr(&begin_op, op, ptr + offset); + op = copy_add_ptr(&begin_op, op); + op = copy_mov_i64(&begin_op, op, cb->inline_insn.imm); + op = copy_st_i64(&begin_op, op); + return op; +} + static TCGOp *append_mem_cb(const struct qemu_plugin_dyn_cb *cb, TCGOp *begin_op, TCGOp *op, int *cb_idx) { @@ -542,6 +607,12 @@ inject_inline_cb_add_u64(const GArray *cbs, TCGOp *begin_op, op_ok_fn ok) inject_cb_type(cbs, begin_op, append_inline_cb_add_u64, ok); } +static void +inject_inline_cb_store_u64(const GArray *cbs, TCGOp *begin_op, op_ok_fn ok) +{ + inject_cb_type(cbs, begin_op, append_inline_cb_store_u64, ok); +} + static void inject_mem_cb(const GArray *cbs, TCGOp *begin_op) { @@ -583,13 +654,14 @@ static void inject_mem_enable_helper(struct qemu_plugin_tb *ptb, struct qemu_plugin_insn *plugin_insn, TCGOp *begin_op) { - GArray *cbs[2]; + GArray *cbs[3]; GArray *arr; size_t n_cbs, i; /* emit inline op before any callback */ cbs[0] = plugin_insn->cbs[PLUGIN_CB_MEM][PLUGIN_CB_INLINE_ADD_U64]; - cbs[1] = plugin_insn->cbs[PLUGIN_CB_MEM][PLUGIN_CB_REGULAR]; + cbs[1] = plugin_insn->cbs[PLUGIN_CB_MEM][PLUGIN_CB_INLINE_STORE_U64]; + cbs[2] = plugin_insn->cbs[PLUGIN_CB_MEM][PLUGIN_CB_REGULAR]; n_cbs = 0; for (i = 0; i < ARRAY_SIZE(cbs); i++) { @@ -662,6 +734,13 @@ static void plugin_gen_tb_inline_add_u64(const struct qemu_plugin_tb *ptb, begin_op, op_ok); } +static void plugin_gen_tb_inline_store_u64(const struct qemu_plugin_tb *ptb, + TCGOp *begin_op) +{ + inject_inline_cb_store_u64(ptb->cbs[PLUGIN_CB_INLINE_STORE_U64], + begin_op, op_ok); +} + static void plugin_gen_insn_udata(const struct qemu_plugin_tb *ptb, TCGOp *begin_op, int insn_idx) { @@ -686,6 +765,14 @@ static void plugin_gen_insn_inline_add_u64(const struct qemu_plugin_tb *ptb, insn->cbs[PLUGIN_CB_INSN][PLUGIN_CB_INLINE_ADD_U64], begin_op, op_ok); } +static void plugin_gen_insn_inline_store_u64(const struct qemu_plugin_tb *ptb, + TCGOp *begin_op, int insn_idx) +{ + struct qemu_plugin_insn *insn = g_ptr_array_index(ptb->insns, insn_idx); + inject_inline_cb_store_u64( + insn->cbs[PLUGIN_CB_INSN][PLUGIN_CB_INLINE_STORE_U64], begin_op, op_ok); +} + static void plugin_gen_mem_regular(const struct qemu_plugin_tb *ptb, TCGOp *begin_op, int insn_idx) { @@ -701,6 +788,15 @@ static void plugin_gen_mem_inline_add_u64(const struct qemu_plugin_tb *ptb, begin_op, op_rw); } +static void plugin_gen_mem_inline_store_u64(const struct qemu_plugin_tb *ptb, + TCGOp *begin_op, int insn_idx) +{ + struct qemu_plugin_insn *insn = g_ptr_array_index(ptb->insns, insn_idx); + inject_inline_cb_store_u64( + insn->cbs[PLUGIN_CB_MEM][PLUGIN_CB_INLINE_STORE_U64], + begin_op, op_rw); +} + static void plugin_gen_enable_mem_helper(struct qemu_plugin_tb *ptb, TCGOp *begin_op, int insn_idx) { @@ -750,6 +846,9 @@ static void pr_ops(void) case PLUGIN_GEN_CB_INLINE_ADD_U64: type = "inline add u64"; break; + case PLUGIN_GEN_CB_INLINE_STORE_U64: + type = "inline store u64"; + break; case PLUGIN_GEN_CB_MEM: type = "mem"; break; @@ -801,6 +900,9 @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb) case PLUGIN_GEN_CB_INLINE_ADD_U64: plugin_gen_tb_inline_add_u64(plugin_tb, op); break; + case PLUGIN_GEN_CB_INLINE_STORE_U64: + plugin_gen_tb_inline_store_u64(plugin_tb, op); + break; default: g_assert_not_reached(); } @@ -820,6 +922,9 @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb) case PLUGIN_GEN_CB_INLINE_ADD_U64: plugin_gen_insn_inline_add_u64(plugin_tb, op, insn_idx); break; + case PLUGIN_GEN_CB_INLINE_STORE_U64: + plugin_gen_insn_inline_store_u64(plugin_tb, op, insn_idx); + break; case PLUGIN_GEN_ENABLE_MEM_HELPER: plugin_gen_enable_mem_helper(plugin_tb, op, insn_idx); break; @@ -839,6 +944,9 @@ static void plugin_gen_inject(struct qemu_plugin_tb *plugin_tb) case PLUGIN_GEN_CB_INLINE_ADD_U64: plugin_gen_mem_inline_add_u64(plugin_tb, op, insn_idx); break; + case PLUGIN_GEN_CB_INLINE_STORE_U64: + plugin_gen_mem_inline_store_u64(plugin_tb, op, insn_idx); + break; default: g_assert_not_reached(); } diff --git a/plugins/api.c b/plugins/api.c index 09ff7c70127..b7feed224a8 100644 --- a/plugins/api.c +++ b/plugins/api.c @@ -60,6 +60,8 @@ static enum plugin_dyn_cb_subtype op_to_cb_subtype(enum qemu_plugin_op op) switch (op) { case QEMU_PLUGIN_INLINE_ADD_U64: return PLUGIN_CB_INLINE_ADD_U64; + case QEMU_PLUGIN_INLINE_STORE_U64: + return PLUGIN_CB_INLINE_STORE_U64; default: g_assert_not_reached(); } diff --git a/plugins/core.c b/plugins/core.c index a641a366ef9..11f72594229 100644 --- a/plugins/core.c +++ b/plugins/core.c @@ -489,6 +489,9 @@ void exec_inline_op(struct qemu_plugin_dyn_cb *cb, int cpu_index) case QEMU_PLUGIN_INLINE_ADD_U64: *val += cb->inline_insn.imm; break; + case QEMU_PLUGIN_INLINE_STORE_U64: + *val = cb->inline_insn.imm; + break; default: g_assert_not_reached(); } @@ -516,6 +519,7 @@ void qemu_plugin_vcpu_mem_cb(CPUState *cpu, uint64_t vaddr, vaddr, cb->userp); break; case PLUGIN_CB_INLINE_ADD_U64: + case PLUGIN_CB_INLINE_STORE_U64: exec_inline_op(cb, cpu->cpu_index); break; default: