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[47.51.160.125]) by smtp.gmail.com with ESMTPSA id 3sm3001576pjk.26.2021.02.17.12.22.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Feb 2021 12:22:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=tDBHUplRWlhhF0tIGzcFewPFwl6oh2HCB/aPTX+DVBc=; b=w4mhJFizPV4fSDWVyq/Ql72ricgdjnOie+ZV85pOM8qj0PlLygxmBQUOTQA0RbyzLd Vibaa/cy6V6qViM4Y1/OR0fygNTUzsGJCNQwx0qED6dP/Ep5EIKbAfnMpQVj3lBiTDG3 dQDiPGecm60vWFgo+Pu8Id5F7ctnD4PvLgUO4Frid389V7j4F1UQvlntQNxbTPr/7D1F Pbw6GEYu2fXFw+rPCt18JztCmtyW69h2kQu/kiLTIqEJr5DfmkmGLBJLxLfGMptjisT2 +i029mgQJevAAHI/66XBTy79q/zHOdjb3DyOYi55OF6C1uI391CvVdYMpuuZRDF76w7G IVNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=tDBHUplRWlhhF0tIGzcFewPFwl6oh2HCB/aPTX+DVBc=; b=jcKzPvFg/+v7v1rKooZLlzIRoIKXUVssRcJDQV977FHYdKFRJDpqqpIjFCz3QmNb9K r9LS6ThaQmjQYfjYpUHPhWqotMZ9F9eakpEdtns6TzV20Qxx8jQeLpDj/42wC6mbB0By NC3rBXevmrlCiPalC2GFrHCKq7YcmwuEioFrqOYZEVkQ62pRrx580eUl39WKqQnklwi4 ze9Ecj1wKX/ZcGsi5r6ak59yXM8tRZYKzMCC8897JZOGwJMSqA7EZaboznrlcpypGWlJ GON9B/v2Ss6cgZ3OJ/Xs6KWkm59rYbGvb6POFo6cwegV5AohqdYslTW5PGttgykCIHk4 vIVw== X-Gm-Message-State: AOAM530PHg841snTSwh/+Prga8CYTC+d5AdZ5Zj3S8/WAsTDOo0eZPFK rArD2u07iHsIbYI1ULsFhF+E6ntQJdkEWg== X-Google-Smtp-Source: ABdhPJwxCFtJSSkRqyYY4S9CKdUsNbyd0byMAgo/+z6c1rnXxPXAZg7nPMV9ZTVJrwr4R9yw/S76xw== X-Received: by 2002:a63:580d:: with SMTP id m13mr952598pgb.342.1613593371653; Wed, 17 Feb 2021 12:22:51 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v4 28/71] tcg/tci: Reuse tci_args_l for goto_tb Date: Wed, 17 Feb 2021 12:19:53 -0800 Message-Id: <20210217202036.1724901-29-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210217202036.1724901-1-richard.henderson@linaro.org> References: <20210217202036.1724901-1-richard.henderson@linaro.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; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::533; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x533.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 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: sw@weilnetz.de, alex.bennee@linaro.org, f4bug@amsat.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Convert to indirect jumps, as it's less complicated. Then we just have a pointer to the tb address at which the chain is stored, from which we read. Signed-off-by: Richard Henderson --- tcg/tci/tcg-target.h | 11 +++-------- tcg/tci.c | 8 +++----- tcg/tci/tcg-target.c.inc | 13 +++---------- 3 files changed, 9 insertions(+), 23 deletions(-) diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h index 9c0021a26f..9285c930a2 100644 --- a/tcg/tci/tcg-target.h +++ b/tcg/tci/tcg-target.h @@ -87,7 +87,7 @@ #define TCG_TARGET_HAS_muluh_i32 0 #define TCG_TARGET_HAS_mulsh_i32 0 #define TCG_TARGET_HAS_goto_ptr 0 -#define TCG_TARGET_HAS_direct_jump 1 +#define TCG_TARGET_HAS_direct_jump 0 #define TCG_TARGET_HAS_qemu_st8_i32 0 =20 #if TCG_TARGET_REG_BITS =3D=3D 64 @@ -174,12 +174,7 @@ void tci_disas(uint8_t opc); =20 #define TCG_TARGET_HAS_MEMORY_BSWAP 1 =20 -static inline void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jm= p_rx, - uintptr_t jmp_rw, uintptr_t ad= dr) -{ - /* patch the branch destination */ - qatomic_set((int32_t *)jmp_rw, addr - (jmp_rx + 4)); - /* no need to flush icache explicitly */ -} +/* not defined -- call should be eliminated at compile time */ +void tb_target_set_jmp_target(uintptr_t, uintptr_t, uintptr_t, uintptr_t); =20 #endif /* TCG_TARGET_H */ diff --git a/tcg/tci.c b/tcg/tci.c index 6fbbc48ecf..3fe0831b33 100644 --- a/tcg/tci.c +++ b/tcg/tci.c @@ -816,13 +816,11 @@ uintptr_t QEMU_DISABLE_CFI tcg_qemu_tb_exec(CPUArchSt= ate *env, return (uintptr_t)ptr; =20 case INDEX_op_goto_tb: - /* Jump address is aligned */ - tb_ptr =3D QEMU_ALIGN_PTR_UP(tb_ptr, 4); - t0 =3D qatomic_read((int32_t *)tb_ptr); - tb_ptr +=3D sizeof(int32_t); + tci_args_l(&tb_ptr, &ptr); tci_assert(tb_ptr =3D=3D old_code_ptr + op_size); - tb_ptr +=3D (int32_t)t0; + tb_ptr =3D *(void **)ptr; continue; + case INDEX_op_qemu_ld_i32: t0 =3D *tb_ptr++; taddr =3D tci_read_ulong(regs, &tb_ptr); diff --git a/tcg/tci/tcg-target.c.inc b/tcg/tci/tcg-target.c.inc index ff8040510f..2c64b4f617 100644 --- a/tcg/tci/tcg-target.c.inc +++ b/tcg/tci/tcg-target.c.inc @@ -405,16 +405,9 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, c= onst TCGArg *args, break; =20 case INDEX_op_goto_tb: - if (s->tb_jmp_insn_offset) { - /* Direct jump method. */ - /* Align for atomic patching and thread safety */ - s->code_ptr =3D QEMU_ALIGN_PTR_UP(s->code_ptr, 4); - s->tb_jmp_insn_offset[args[0]] =3D tcg_current_code_size(s); - tcg_out32(s, 0); - } else { - /* Indirect jump method. */ - TODO(); - } + tcg_debug_assert(s->tb_jmp_insn_offset =3D=3D 0); + /* indirect jump method. */ + tcg_out_i(s, (uintptr_t)(s->tb_jmp_target_addr + args[0])); set_jmp_reset_offset(s, args[0]); break; =20 --=20 2.25.1