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([91.209.212.61]) by smtp.gmail.com with ESMTPSA id z23-20020a2e8857000000b002a8c271de33sm2160484ljj.67.2023.04.25.12.34.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Apr 2023 12:34:42 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, qemu-s390x@nongnu.org, qemu-riscv@nongnu.org, qemu-ppc@nongnu.org, git@xen0n.name, jiaxun.yang@flygoat.com, philmd@linaro.org Subject: [PATCH v3 29/57] tcg/s390x: Use full load/store helpers in user-only mode Date: Tue, 25 Apr 2023 20:31:18 +0100 Message-Id: <20230425193146.2106111-30-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230425193146.2106111-1-richard.henderson@linaro.org> References: <20230425193146.2106111-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::236; envelope-from=richard.henderson@linaro.org; helo=mail-lj1-x236.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, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_TEMPERROR=0.01 autolearn=unavailable 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Instead of using helper_unaligned_{ld,st}, use the full load/store helpers. This will allow the fast path to increase alignment to implement atomicity while not immediately raising an alignment exception. Signed-off-by: Richard Henderson --- tcg/s390x/tcg-target.c.inc | 29 ----------------------------- 1 file changed, 29 deletions(-) diff --git a/tcg/s390x/tcg-target.c.inc b/tcg/s390x/tcg-target.c.inc index 968977be98..de8aed5f77 100644 --- a/tcg/s390x/tcg-target.c.inc +++ b/tcg/s390x/tcg-target.c.inc @@ -1679,7 +1679,6 @@ static void tcg_out_qemu_st_direct(TCGContext *s, MemOp opc, TCGReg data, } } -#if defined(CONFIG_SOFTMMU) static const TCGLdstHelperParam ldst_helper_param = { .ntmp = 1, .tmp = { TCG_TMP0 } }; @@ -1716,34 +1715,6 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) tgen_gotoi(s, S390_CC_ALWAYS, lb->raddr); return true; } -#else -static bool tcg_out_fail_alignment(TCGContext *s, TCGLabelQemuLdst *l) -{ - if (!patch_reloc(l->label_ptr[0], R_390_PC16DBL, - (intptr_t)tcg_splitwx_to_rx(s->code_ptr), 2)) { - return false; - } - - tcg_out_mov(s, TCG_TYPE_TL, TCG_REG_R3, l->addrlo_reg); - tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_R2, TCG_AREG0); - - /* "Tail call" to the helper, with the return address back inline. */ - tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R14, (uintptr_t)l->raddr); - tgen_gotoi(s, S390_CC_ALWAYS, (const void *)(l->is_ld ? helper_unaligned_ld - : helper_unaligned_st)); - return true; -} - -static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l) -{ - return tcg_out_fail_alignment(s, l); -} - -static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l) -{ - return tcg_out_fail_alignment(s, l); -} -#endif /* CONFIG_SOFTMMU */ /* * For softmmu, perform the TLB load and compare. -- 2.34.1