From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48227) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fGTJF-000512-Mt for qemu-devel@nongnu.org; Wed, 09 May 2018 13:55:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fGTJB-0005cD-LF for qemu-devel@nongnu.org; Wed, 09 May 2018 13:55:25 -0400 Received: from mail-pf0-x242.google.com ([2607:f8b0:400e:c00::242]:44702) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fGTJB-0005af-9D for qemu-devel@nongnu.org; Wed, 09 May 2018 13:55:21 -0400 Received: by mail-pf0-x242.google.com with SMTP id q22so25999695pff.11 for ; Wed, 09 May 2018 10:55:21 -0700 (PDT) From: Richard Henderson Date: Wed, 9 May 2018 10:54:41 -0700 Message-Id: <20180509175458.15642-12-richard.henderson@linaro.org> In-Reply-To: <20180509175458.15642-1-richard.henderson@linaro.org> References: <20180509175458.15642-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PULL 11/28] translator: merge max_insns into DisasContextBase List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: David Hildenbrand , Alexander Graf , Stafford Horne , Cornelia Huck , Bastian Koppelmann , "Edgar E. Iglesias" , Paolo Bonzini , Michael Walle , Max Filippov , Richard Henderson , Michael Clark , Eduardo Habkost , Sagar Karandikar , peter.maydell@linaro.org, Aurelien Jarno , Yongbok Kim , qemu-s390x@nongnu.org, Artyom Tarasenko , Palmer Dabbelt , David Gibson , qemu-ppc@nongnu.org, qemu-arm@nongnu.org, Mark Cave-Ayland , Guan Xuetao , Peter Crosthwaite , "Emilio G. Cota" From: "Emilio G. Cota" While at it, use int for both num_insns and max_insns to make sure we have same-type comparisons. Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Michael Clark Signed-off-by: Emilio G. Cota Signed-off-by: Richard Henderson --- include/exec/translator.h | 8 ++++---- accel/tcg/translator.c | 21 ++++++++++----------- target/alpha/translate.c | 6 ++---- target/arm/translate-a64.c | 8 +++----- target/arm/translate.c | 9 +++------ target/hppa/translate.c | 7 ++----- target/i386/translate.c | 5 +---- target/ppc/translate.c | 5 ++--- 8 files changed, 27 insertions(+), 42 deletions(-) diff --git a/include/exec/translator.h b/include/exec/translator.h index e2dc2a04ae..71e7b2c347 100644 --- a/include/exec/translator.h +++ b/include/exec/translator.h @@ -58,6 +58,7 @@ typedef enum DisasJumpType { * disassembly). * @is_jmp: What instruction to disassemble next. * @num_insns: Number of translated instructions (including current). + * @max_insns: Maximum number of instructions to be translated in this TB. * @singlestep_enabled: "Hardware" single stepping enabled. * * Architecture-agnostic disassembly context. @@ -67,7 +68,8 @@ typedef struct DisasContextBase { target_ulong pc_first; target_ulong pc_next; DisasJumpType is_jmp; - unsigned int num_insns; + int num_insns; + int max_insns; bool singlestep_enabled; } DisasContextBase; @@ -76,7 +78,6 @@ typedef struct DisasContextBase { * @init_disas_context: * Initialize the target-specific portions of DisasContext struct. * The generic DisasContextBase has already been initialized. - * Return max_insns, modified as necessary by db->tb->flags. * * @tb_start: * Emit any code required before the start of the main loop, @@ -106,8 +107,7 @@ typedef struct DisasContextBase { * Print instruction disassembly to log. */ typedef struct TranslatorOps { - int (*init_disas_context)(DisasContextBase *db, CPUState *cpu, - int max_insns); + void (*init_disas_context)(DisasContextBase *db, CPUState *cpu); void (*tb_start)(DisasContextBase *db, CPUState *cpu); void (*insn_start)(DisasContextBase *db, CPUState *cpu); bool (*breakpoint_check)(DisasContextBase *db, CPUState *cpu, diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c index 23c6602cd9..0f9dca9113 100644 --- a/accel/tcg/translator.c +++ b/accel/tcg/translator.c @@ -34,8 +34,6 @@ void translator_loop_temp_check(DisasContextBase *db) void translator_loop(const TranslatorOps *ops, DisasContextBase *db, CPUState *cpu, TranslationBlock *tb) { - int max_insns; - /* Initialize DisasContext */ db->tb = tb; db->pc_first = tb->pc; @@ -45,18 +43,18 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db, db->singlestep_enabled = cpu->singlestep_enabled; /* Instruction counting */ - max_insns = tb_cflags(db->tb) & CF_COUNT_MASK; - if (max_insns == 0) { - max_insns = CF_COUNT_MASK; + db->max_insns = tb_cflags(db->tb) & CF_COUNT_MASK; + if (db->max_insns == 0) { + db->max_insns = CF_COUNT_MASK; } - if (max_insns > TCG_MAX_INSNS) { - max_insns = TCG_MAX_INSNS; + if (db->max_insns > TCG_MAX_INSNS) { + db->max_insns = TCG_MAX_INSNS; } if (db->singlestep_enabled || singlestep) { - max_insns = 1; + db->max_insns = 1; } - max_insns = ops->init_disas_context(db, cpu, max_insns); + ops->init_disas_context(db, cpu); tcg_debug_assert(db->is_jmp == DISAS_NEXT); /* no early exit */ /* Reset the temp count so that we can identify leaks */ @@ -95,7 +93,8 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db, update db->pc_next and db->is_jmp to indicate what should be done next -- either exiting this loop or locate the start of the next instruction. */ - if (db->num_insns == max_insns && (tb_cflags(db->tb) & CF_LAST_IO)) { + if (db->num_insns == db->max_insns + && (tb_cflags(db->tb) & CF_LAST_IO)) { /* Accept I/O on the last instruction. */ gen_io_start(); ops->translate_insn(db, cpu); @@ -111,7 +110,7 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db, /* Stop translation if the output buffer is full, or we have executed all of the allowed instructions. */ - if (tcg_op_buf_full() || db->num_insns >= max_insns) { + if (tcg_op_buf_full() || db->num_insns >= db->max_insns) { db->is_jmp = DISAS_TOO_MANY; break; } diff --git a/target/alpha/translate.c b/target/alpha/translate.c index 73a1b5e63e..15eca71d49 100644 --- a/target/alpha/translate.c +++ b/target/alpha/translate.c @@ -2919,8 +2919,7 @@ static DisasJumpType translate_one(DisasContext *ctx, uint32_t insn) return ret; } -static int alpha_tr_init_disas_context(DisasContextBase *dcbase, - CPUState *cpu, int max_insns) +static void alpha_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu) { DisasContext *ctx = container_of(dcbase, DisasContext, base); CPUAlphaState *env = cpu->env_ptr; @@ -2959,8 +2958,7 @@ static int alpha_tr_init_disas_context(DisasContextBase *dcbase, mask = TARGET_PAGE_MASK; } bound = -(ctx->base.pc_first | mask) / 4; - - return MIN(max_insns, bound); + ctx->base.max_insns = MIN(ctx->base.max_insns, bound); } static void alpha_tr_tb_start(DisasContextBase *db, CPUState *cpu) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 6d49f30b4a..1e7c150514 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -13224,8 +13224,8 @@ static void disas_a64_insn(CPUARMState *env, DisasContext *s) free_tmp_a64(s); } -static int aarch64_tr_init_disas_context(DisasContextBase *dcbase, - CPUState *cpu, int max_insns) +static void aarch64_tr_init_disas_context(DisasContextBase *dcbase, + CPUState *cpu) { DisasContext *dc = container_of(dcbase, DisasContext, base); CPUARMState *env = cpu->env_ptr; @@ -13288,11 +13288,9 @@ static int aarch64_tr_init_disas_context(DisasContextBase *dcbase, if (dc->ss_active) { bound = 1; } - max_insns = MIN(max_insns, bound); + dc->base.max_insns = MIN(dc->base.max_insns, bound); init_tmp_a64_array(dc); - - return max_insns; } static void aarch64_tr_tb_start(DisasContextBase *db, CPUState *cpu) diff --git a/target/arm/translate.c b/target/arm/translate.c index 0f6629f745..731cf327a1 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -12243,8 +12243,7 @@ static bool insn_crosses_page(CPUARMState *env, DisasContext *s) return !thumb_insn_is_16bit(s, insn); } -static int arm_tr_init_disas_context(DisasContextBase *dcbase, - CPUState *cs, int max_insns) +static void arm_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) { DisasContext *dc = container_of(dcbase, DisasContext, base); CPUARMState *env = cs->env_ptr; @@ -12305,14 +12304,14 @@ static int arm_tr_init_disas_context(DisasContextBase *dcbase, /* If architectural single step active, limit to 1. */ if (is_singlestepping(dc)) { - max_insns = 1; + dc->base.max_insns = 1; } /* ARM is a fixed-length ISA. Bound the number of insns to execute to those left on the page. */ if (!dc->thumb) { int bound = -(dc->base.pc_first | TARGET_PAGE_MASK) / 4; - max_insns = MIN(max_insns, bound); + dc->base.max_insns = MIN(dc->base.max_insns, bound); } cpu_F0s = tcg_temp_new_i32(); @@ -12323,8 +12322,6 @@ static int arm_tr_init_disas_context(DisasContextBase *dcbase, cpu_V1 = cpu_F1d; /* FIXME: cpu_M0 can probably be the same as cpu_V0. */ cpu_M0 = tcg_temp_new_i64(); - - return max_insns; } static void arm_tr_tb_start(DisasContextBase *dcbase, CPUState *cpu) diff --git a/target/hppa/translate.c b/target/hppa/translate.c index cdc397308b..5320b217de 100644 --- a/target/hppa/translate.c +++ b/target/hppa/translate.c @@ -4669,8 +4669,7 @@ static DisasJumpType translate_one(DisasContext *ctx, uint32_t insn) return gen_illegal(ctx); } -static int hppa_tr_init_disas_context(DisasContextBase *dcbase, - CPUState *cs, int max_insns) +static void hppa_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) { DisasContext *ctx = container_of(dcbase, DisasContext, base); int bound; @@ -4700,14 +4699,12 @@ static int hppa_tr_init_disas_context(DisasContextBase *dcbase, /* Bound the number of instructions by those left on the page. */ bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4; - bound = MIN(max_insns, bound); + ctx->base.max_insns = MIN(ctx->base.max_insns, bound); ctx->ntempr = 0; ctx->ntempl = 0; memset(ctx->tempr, 0, sizeof(ctx->tempr)); memset(ctx->templ, 0, sizeof(ctx->templ)); - - return bound; } static void hppa_tr_tb_start(DisasContextBase *dcbase, CPUState *cs) diff --git a/target/i386/translate.c b/target/i386/translate.c index c9ed8dc709..b0f69838f2 100644 --- a/target/i386/translate.c +++ b/target/i386/translate.c @@ -8402,8 +8402,7 @@ void tcg_x86_init(void) } } -static int i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu, - int max_insns) +static void i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu) { DisasContext *dc = container_of(dcbase, DisasContext, base); CPUX86State *env = cpu->env_ptr; @@ -8470,8 +8469,6 @@ static int i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu, cpu_ptr0 = tcg_temp_new_ptr(); cpu_ptr1 = tcg_temp_new_ptr(); cpu_cc_srcT = tcg_temp_local_new(); - - return max_insns; } static void i386_tr_tb_start(DisasContextBase *db, CPUState *cpu) diff --git a/target/ppc/translate.c b/target/ppc/translate.c index 2a4140f420..7972e6b410 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -7215,8 +7215,7 @@ void ppc_cpu_dump_statistics(CPUState *cs, FILE*f, #endif } -static int ppc_tr_init_disas_context(DisasContextBase *dcbase, - CPUState *cs, int max_insns) +static void ppc_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) { DisasContext *ctx = container_of(dcbase, DisasContext, base); CPUPPCState *env = cs->env_ptr; @@ -7281,7 +7280,7 @@ static int ppc_tr_init_disas_context(DisasContextBase *dcbase, #endif bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4; - return MIN(max_insns, bound); + ctx->base.max_insns = MIN(ctx->base.max_insns, bound); } static void ppc_tr_tb_start(DisasContextBase *db, CPUState *cs) -- 2.17.0