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([240d:1a:3b6:8b00:750a:cb0b:f0f9:68f4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-249065a8036sm103038775ad.129.2025.09.01.04.45.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Sep 2025 04:45:50 -0700 (PDT) From: Kohei Tokunaga To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Thomas Huth , Paolo Bonzini , Richard Henderson , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , WANG Xuerui , Aurelien Jarno , Huacai Chen , Jiaxun Yang , Aleksandar Rikalo , Palmer Dabbelt , Alistair Francis , Stefan Weil , qemu-arm@nongnu.org, qemu-riscv@nongnu.org, Stefan Hajnoczi , Pierrick Bouvier , ktokunaga.mail@gmail.com Subject: [PATCH v3 05/35] tcg/wasm: Add tcg-target.h and tcg-target-reg-bits.h Date: Mon, 1 Sep 2025 20:44:07 +0900 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::52d; envelope-from=ktokunaga.mail@gmail.com; helo=mail-pg1-x52d.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, FREEMAIL_FROM=0.001, 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: 2.1.29 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 The Wasm backend targets wasm64 as the host so TCG_TARGET_REG_BITS is set to 64. Since WebAssembly instructions vary in size and can include single-byte instructions, TCG_TARGET_INSN_UNIT_SIZE is set to 1. Signed-off-by: Kohei Tokunaga --- MAINTAINERS | 5 +++ tcg/wasm/tcg-target-reg-bits.h | 11 ++++++ tcg/wasm/tcg-target.h | 61 ++++++++++++++++++++++++++++++++++ 3 files changed, 77 insertions(+) create mode 100644 tcg/wasm/tcg-target-reg-bits.h create mode 100644 tcg/wasm/tcg-target.h V3: - Although checkpatch.pl reports the following error in tcg/wasm/tcg-target.h, this file is based on the TCI code so it is preserved as-is. > New file 'tcg/wasm/tcg-target.h' must not have license boilerplate > header text, only the SPDX-License-Identifier, unless this file was > copied from existing code already having such text. diff --git a/MAINTAINERS b/MAINTAINERS index 433a44118d..89e4b51e22 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3999,6 +3999,11 @@ F: tcg/tci/ F: tcg/tci.c F: disas/tci.c +WebAssembly TCG target +M: Kohei Tokunaga +S: Maintained +F: tcg/wasm/ + Block drivers ------------- VMDK diff --git a/tcg/wasm/tcg-target-reg-bits.h b/tcg/wasm/tcg-target-reg-bits.h new file mode 100644 index 0000000000..3dd821691f --- /dev/null +++ b/tcg/wasm/tcg-target-reg-bits.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: MIT */ + +#ifndef TCG_TARGET_REG_BITS_H +#define TCG_TARGET_REG_BITS_H + +#if UINTPTR_MAX != UINT64_MAX +# error Unsupported pointer size for TCG target +#endif +#define TCG_TARGET_REG_BITS 64 + +#endif diff --git a/tcg/wasm/tcg-target.h b/tcg/wasm/tcg-target.h new file mode 100644 index 0000000000..f00761d19f --- /dev/null +++ b/tcg/wasm/tcg-target.h @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Tiny Code Generator for QEMU + * + * Based on tci/tcg-target.h + * + * Copyright (c) 2009, 2011 Stefan Weil + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef TCG_TARGET_H +#define TCG_TARGET_H + +#define TCG_TARGET_INSN_UNIT_SIZE 1 +#define MAX_CODE_GEN_BUFFER_SIZE ((size_t)-1) + +/* Number of registers available. */ +#define TCG_TARGET_NB_REGS 16 + +/* List of registers which are used by TCG. */ +typedef enum { + TCG_REG_R0 = 0, + TCG_REG_R1, + TCG_REG_R2, + TCG_REG_R3, + TCG_REG_R4, + TCG_REG_R5, + TCG_REG_R6, + TCG_REG_R7, + TCG_REG_R8, + TCG_REG_R9, + TCG_REG_R10, + TCG_REG_R11, + TCG_REG_R12, + TCG_REG_R13, + TCG_REG_R14, + TCG_REG_R15, + + TCG_REG_TMP = TCG_REG_R13, + TCG_AREG0 = TCG_REG_R14, + TCG_REG_CALL_STACK = TCG_REG_R15, +} TCGReg; + +#endif /* TCG_TARGET_H */ -- 2.43.0