From patchwork Tue Dec 6 10:14:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arthur Cohen X-Patchwork-Id: 61539 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 609E2382A222 for ; Tue, 6 Dec 2022 10:27:14 +0000 (GMT) X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from mail-wr1-x42c.google.com (mail-wr1-x42c.google.com [IPv6:2a00:1450:4864:20::42c]) by sourceware.org (Postfix) with ESMTPS id 29C23395C05B for ; Tue, 6 Dec 2022 10:14:22 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 29C23395C05B Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=embecosm.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=embecosm.com Received: by mail-wr1-x42c.google.com with SMTP id bs21so22762862wrb.4 for ; Tue, 06 Dec 2022 02:14:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=embecosm.com; s=google; h=content-transfer-encoding:mime-version:reply-to:references :in-reply-to:message-id:date:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to; bh=NimhGG/QxylaqZ4ABB4wVhNpzxe07Nwp7Wi6rq3XtFY=; b=b7IDAcny76BszIPRY78VzJoTJtWkyF11Sa4dwdYaWYUdVv83g+OCqeu5wLL6wd7xcM 1t8Ij1gg5PNhb8EzgE+Yz8VRAG2NhWp6daICUaXxu5/Mc+bJbdv7DQN6R1UMKImr9Zny 1VrcZxUoZqZCAwbyYBjC82WBypvkm8mXpQdhDlw5msqxnIa5czU8D7LD6QNZ0wZQ2lp7 /I/AzOb/jDAIeM45k2Hau02pzHDOjm7dAoeLamMOMa5lzqqKLUd+4rn+mDkzv9FEUcOz BO1dilnHWaWwVsmKxaVRFIaJ2K+zsfmyr/mXYu8Wct3QwkhqYhMC1rGmBIgmakUqZKYZ Yhog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:reply-to:references :in-reply-to:message-id:date:subject:cc:to:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=NimhGG/QxylaqZ4ABB4wVhNpzxe07Nwp7Wi6rq3XtFY=; b=nZRFhFivxyiTtCNdWzrQHMWZe5GRYxtL/ylznh4Eas6w88g5fRXON5dUGTKwbFknBv oK03IcKTLbUcGZlWsYpw/wYUqrYaazqLX/G4KM0omyaulKDw+dW8uhmxLJaGrB8np5Oo GSQ8hKW6W0xeoeFll5UbV/7dwIWdTevXqNiUX61/BFXkVVF3LwBrb1QOdJ0FUj9WhggN FXOXeJPfrBOEhHpz3YtEPtDcrIxP2xXjtgxOdIfIrdta+41oAWTIeEl28M9zH7aZcBT+ YpozIyDjmcdUrROcbVrmIQwh3GvrI9GWkSWP08nDWKtWTzsKmHTmUHJ26Zy+om3SmMTq ISZQ== X-Gm-Message-State: ANoB5pn84HSUjnO1UdWUo+tR+B2Ho1BhKMcic6G/JBzv+4NVm7gN0J3W bF2Yn114y73vn5fBs7EQ2nKkI5bw0MSC9K4i4w== X-Google-Smtp-Source: AA0mqf4CE9Lw88CYYBteJXi5jCAd/esJu1TUDdoqzAGC98mCQJVHbWWmOnugkmwHNpAVG41FOx9lug== X-Received: by 2002:a5d:4c4c:0:b0:242:5023:9bb3 with SMTP id n12-20020a5d4c4c000000b0024250239bb3mr8006814wrt.160.1670321660705; Tue, 06 Dec 2022 02:14:20 -0800 (PST) Received: from platypus.lan ([2001:861:5e4c:3bb0:6424:328a:1734:3249]) by smtp.googlemail.com with ESMTPSA id r10-20020a05600c458a00b003cfd4a50d5asm27052699wmo.34.2022.12.06.02.14.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Dec 2022 02:14:20 -0800 (PST) From: arthur.cohen@embecosm.com To: gcc-patches@gcc.gnu.org Cc: gcc-rust@gcc.gnu.org, richard.guenther@gmail.com, jakub@redhat.com, Philip Herron Subject: [PATCH Rust front-end v4 44/46] gccrs: Add compiler driver Date: Tue, 6 Dec 2022 11:14:23 +0100 Message-Id: <20221206101417.778807-45-arthur.cohen@embecosm.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221206101417.778807-1-arthur.cohen@embecosm.com> References: <20221206101417.778807-1-arthur.cohen@embecosm.com> MIME-Version: 1.0 X-Spam-Status: No, score=-17.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: arthur.cohen@embecosm.com Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" From: Philip Herron Our compiler driver is fairly simple so far. The key piece to enforce is that a compilation unit in Rust is the whole crate, so the process for compiling Rust means pointing the compiler at the main entry point such as src/lib.rs or src/main.rs where the expansion pass takes over loading the other source files to include them in the crate. --- gcc/rust/rustspec.cc | 191 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 gcc/rust/rustspec.cc diff --git a/gcc/rust/rustspec.cc b/gcc/rust/rustspec.cc new file mode 100644 index 00000000000..b05f8ae5454 --- /dev/null +++ b/gcc/rust/rustspec.cc @@ -0,0 +1,191 @@ +/* rustspec.c -- Specific flags and argument handling of the gcc Rust front end. + Copyright (C) 2009-2022 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "tm.h" +#include "opts.h" + +// satisfy intellisense +#include "options.h" + +/* This bit is set if we saw a `-xfoo' language specification. */ +#define LANGSPEC (1 << 1) +/* This bit is set if they did `-lc'. */ +#define WITHLIBC (1 << 2) +/* Skip this option. */ +#define SKIPOPT (1 << 3) + +void +lang_specific_driver (struct cl_decoded_option **in_decoded_options, + unsigned int *in_decoded_options_count, + int *in_added_libraries) +{ + unsigned int i, j; + + /* The new argument list will be contained in this. */ + struct cl_decoded_option *new_decoded_options; + + /* "-lc" if it appears on the command line. */ + const struct cl_decoded_option *saw_libc = 0; + + /* An array used to flag each argument that needs a bit set for + LANGSPEC or WITHLIBC. */ + int *args; + + /* True if we saw -static. */ + int static_link = 0; + + /* True if we should add -shared-libgcc to the command-line. */ + int shared_libgcc = 1; + + /* The total number of arguments with the new stuff. */ + unsigned int argc; + + /* The argument list. */ + struct cl_decoded_option *decoded_options; + + /* The number of libraries added in. */ + int added_libraries; + + /* The total number of arguments with the new stuff. */ + int num_args = 1; + + /* Whether the -o option was used. */ + bool saw_opt_o = false; + + /* The first input file with an extension of .rs. */ + const char *first_rust_file = NULL; + + argc = *in_decoded_options_count; + decoded_options = *in_decoded_options; + added_libraries = *in_added_libraries; + + args = XCNEWVEC (int, argc); + + for (i = 1; i < argc; i++) + { + const char *arg = decoded_options[i].arg; + + switch (decoded_options[i].opt_index) + { + case OPT_l: + if (strcmp (arg, "c") == 0) + args[i] |= WITHLIBC; + break; + + case OPT_o: + saw_opt_o = true; + break; + + case OPT_static: + static_link = 1; + break; + + case OPT_static_libgcc: + shared_libgcc = 0; + break; + + case OPT_SPECIAL_input_file: + if (first_rust_file == NULL) + { + int len; + + len = strlen (arg); + if (len > 3 && strcmp (arg + len - 3, ".rs") == 0) + first_rust_file = arg; + } + else + { + // FIXME: ARTHUR: Do we want to error here? If there's already one + // file? + // How do we error here? Do we want to instead just handle that in + // the session manager? + } + + break; + } + } + + /* There's no point adding -shared-libgcc if we don't have a shared + libgcc. */ +#ifndef ENABLE_SHARED_LIBGCC + shared_libgcc = 0; +#endif + + /* Make sure to have room for the trailing NULL argument. */ + num_args = argc + shared_libgcc * 5 + 10; + new_decoded_options = XNEWVEC (struct cl_decoded_option, num_args); + + i = 0; + j = 0; + + /* Copy the 0th argument, i.e., the name of the program itself. */ + new_decoded_options[j++] = decoded_options[i++]; + + /* NOTE: We start at 1 now, not 0. */ + while (i < argc) + { + new_decoded_options[j] = decoded_options[i]; + + if (!saw_libc && (args[i] & WITHLIBC)) + { + --j; + saw_libc = &decoded_options[i]; + } + + if ((args[i] & SKIPOPT) != 0) + --j; + + i++; + j++; + } + + /* If we didn't see a -o option, add one. This is because we need + the driver to pass all .rs files to rust1. Without a -o option the + driver will invoke rust1 separately for each input file. FIXME: + This should probably use some other interface to force the driver + to set combine_inputs. */ + if (!saw_opt_o) + { + generate_option (OPT_o, "a.out", 1, CL_DRIVER, &new_decoded_options[j]); + j++; + } + + if (saw_libc) + new_decoded_options[j++] = *saw_libc; + if (shared_libgcc && !static_link) + generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER, + &new_decoded_options[j++]); + + *in_decoded_options_count = j; + *in_decoded_options = new_decoded_options; + *in_added_libraries = added_libraries; +} + +/* Called before linking. Returns 0 on success and -1 on failure. */ +int +lang_specific_pre_link (void) /* Not used for Rust. */ +{ + return 0; +} + +/* Number of extra output files that lang_specific_pre_link may generate. */ +int lang_specific_extra_outfiles = 0; /* Not used for Rust. */