145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* 245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * Invoke an external C preprocessor 345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * 445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * Copyright (C) 2007 Paul Barker 545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * Copyright (C) 2001-2007 Peter Johnson 645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * 745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * Redistribution and use in source and binary forms, with or without 845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * modification, are permitted provided that the following conditions 945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * are met: 1045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * 1. Redistributions of source code must retain the above copyright 1145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * notice, this list of conditions and the following disclaimer. 1245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * 2. Redistributions in binary form must reproduce the above copyright 1345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * notice, this list of conditions and the following disclaimer in the 1445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * documentation and/or other materials provided with the distribution. 1545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * 1645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS'' 1745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE 2045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org * POSSIBILITY OF SUCH DAMAGE. 2745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org */ 2845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 2945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#include <util.h> 3045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#include <libyasm.h> 3145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 3245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* TODO: Use autoconf to get the limit on the command line length. */ 3345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#define CMDLINE_SIZE 32770 3445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 3545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#define BSIZE 512 3645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 3745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* Pre-declare the preprocessor module object. */ 3845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgyasm_preproc_module yasm_cpp_LTX_preproc; 3945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 4045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/******************************************************************************* 4145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org Structures. 4245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org*******************************************************************************/ 4345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 4445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* An entry in a list of arguments to pass to cpp. */ 4545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgtypedef struct cpp_arg_entry { 4645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org TAILQ_ENTRY(cpp_arg_entry) entry; 4745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 4845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* 4945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org The operator (eg "-I") and the parameter (eg "include/"). op is expected 5045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org to point to a string literal, whereas param is expected to be a copy of 5145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org the parameter which is free'd when no-longer needed (in 5245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_destroy()). 5345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org */ 5445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org const char *op; 5545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org char *param; 5645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} cpp_arg_entry; 5745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 5845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgtypedef struct yasm_preproc_cpp { 5945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_preproc_base preproc; /* base structure */ 6045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 6145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* List of arguments to pass to cpp. */ 62a1b5233e6d340f45f4846131fec9d0b92e203ce4hbono@chromium.org TAILQ_HEAD(cpp_arg_head, cpp_arg_entry) cpp_args; 6345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 6445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org char *filename; 6545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org FILE *f, *f_deps; 6645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_linemap *cur_lm; 6745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_errwarns *errwarns; 6845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 6945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org int flags; 7045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} yasm_preproc_cpp; 7145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 7245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* Flag values for yasm_preproc_cpp->flags. */ 7345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#define CPP_HAS_BEEN_INVOKED 0x01 7445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#define CPP_HAS_GENERATED_DEPS 0x02 7545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 7645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/******************************************************************************* 7745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org Internal functions and helpers. 7845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org*******************************************************************************/ 7945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 8045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* 8145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org Append a string to the command line, ensuring that we don't overflow the 8245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org buffer. 8345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org*/ 8445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#define APPEND(s) do { \ 8545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org size_t _len = strlen(s); \ 8645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (p + _len >= limit) \ 8745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm__fatal(N_("command line too long!")); \ 8845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org strcpy(p, s); \ 8945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org p += _len; \ 9045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} while (0) 9145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 9245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* 9345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org Put all the options together into a command line that can be used to invoke 9445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp. 9545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org*/ 9645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic char * 9745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_build_cmdline(yasm_preproc_cpp *pp, const char *extra) 9845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 9945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org char *cmdline, *p, *limit; 10045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_arg_entry *arg; 10145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 10245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Initialize command line. */ 10345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cmdline = p = yasm_xmalloc(strlen(CPP_PROG)+CMDLINE_SIZE); 10445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org limit = p + CMDLINE_SIZE; 10545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org strcpy(p, CPP_PROG); 10645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org p += strlen(CPP_PROG); 10745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 10845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg = TAILQ_FIRST(&pp->cpp_args); 10945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 11045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Append arguments from the list. */ 11145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org while ( arg ) { 11245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org APPEND(" "); 11345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org APPEND(arg->op); 11445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org APPEND(" "); 11545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org APPEND(arg->param); 11645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 11745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg = TAILQ_NEXT(arg, entry); 11845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 11945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 12045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Append extra arguments. */ 12145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (extra) { 12245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org APPEND(" "); 12345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org APPEND(extra); 12445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 12545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Append final arguments. */ 12645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org APPEND(" -x assembler-with-cpp "); 12745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org APPEND(pp->filename); 12845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 12945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org return cmdline; 13045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 13145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 13245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* Invoke the c preprocessor. */ 13345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 13445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_invoke(yasm_preproc_cpp *pp) 13545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 13645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org char *cmdline; 13745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 13845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cmdline = cpp_build_cmdline(pp, NULL); 13945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 14045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#ifdef HAVE_POPEN 14145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->f = popen(cmdline, "r"); 14245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (!pp->f) 14345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm__fatal( N_("Failed to execute preprocessor") ); 14445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#else 14545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm__fatal( N_("Cannot execute preprocessor, no popen available") ); 14645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#endif 14745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 14845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_xfree(cmdline); 14945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 15045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 15145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* Free memory used by the list of arguments. */ 15245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 15345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_destroy_args(yasm_preproc_cpp *pp) 15445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 15545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_arg_entry *arg; 15645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 15745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org while ( (arg = TAILQ_FIRST(&pp->cpp_args)) ) { 15845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org TAILQ_REMOVE(&pp->cpp_args, arg, entry); 15945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_xfree(arg->param); 16045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_xfree(arg); 16145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 16245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 16345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 16445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/* Invoke the c preprocessor to generate dependency info. */ 16545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 16645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_generate_deps(yasm_preproc_cpp *pp) 16745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 16845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org char *cmdline; 16945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 17045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cmdline = cpp_build_cmdline(pp, "-M"); 17145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 17245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#ifdef HAVE_POPEN 17345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->f_deps = popen(cmdline, "r"); 17445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (!pp->f_deps) 17545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm__fatal( N_("Failed to execute preprocessor") ); 17645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#else 17745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm__fatal( N_("Cannot execute preprocessor, no popen available") ); 17845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#endif 17945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 18045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_xfree(cmdline); 18145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 18245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 18345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/******************************************************************************* 18445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org Interface functions. 18545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org*******************************************************************************/ 18645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic yasm_preproc * 18745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_create(const char *in, yasm_symtab *symtab, yasm_linemap *lm, 18845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_errwarns *errwarns) 18945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 19045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_preproc_cpp *pp = yasm_xmalloc(sizeof(yasm_preproc_cpp)); 19145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org void * iter; 19245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org const char * inc_dir; 19345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 19445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->preproc.module = &yasm_cpp_LTX_preproc; 19545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->f = pp->f_deps = NULL; 19645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->cur_lm = lm; 19745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->errwarns = errwarns; 19845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->flags = 0; 19945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->filename = yasm__xstrdup(in); 20045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 20145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org TAILQ_INIT(&pp->cpp_args); 20245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 20345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Iterate through the list of include dirs. */ 20445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org iter = NULL; 20545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org while ((inc_dir = yasm_get_include_dir(&iter)) != NULL) { 20645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_arg_entry *arg = yasm_xmalloc(sizeof(cpp_arg_entry)); 20745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg->op = "-I"; 20845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg->param = yasm__xstrdup(inc_dir); 20945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 21045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org TAILQ_INSERT_TAIL(&pp->cpp_args, arg, entry); 21145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 21245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 21345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org return (yasm_preproc *)pp; 21445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 21545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 21645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 21745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_destroy(yasm_preproc *preproc) 21845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 21945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_preproc_cpp *pp = (yasm_preproc_cpp *)preproc; 22045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 22145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (pp->f) { 22245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#ifdef HAVE_POPEN 22345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (pclose(pp->f) != 0) 22445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm__fatal( N_("Preprocessor exited with failure") ); 22545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org#endif 22645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 22745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 22845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_destroy_args(pp); 22945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 23045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_xfree(pp->filename); 23145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_xfree(pp); 23245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 23345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 23445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic char * 23545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_get_line(yasm_preproc *preproc) 23645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 23745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_preproc_cpp *pp = (yasm_preproc_cpp *)preproc; 23845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org int bufsize = BSIZE; 23945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org char *buf, *p; 24045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 24145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (! (pp->flags & CPP_HAS_BEEN_INVOKED) ) { 24245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->flags |= CPP_HAS_BEEN_INVOKED; 24345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 24445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_invoke(pp); 24545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 24645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 24745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* 24845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org Once the preprocessor has been run, we're just dealing with a normal 24945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org file. 25045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org */ 25145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 25245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Loop to ensure entire line is read (don't want to limit line length). */ 25345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org buf = yasm_xmalloc((size_t)bufsize); 25445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org p = buf; 25545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org for (;;) { 25645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (!fgets(p, bufsize-(p-buf), pp->f)) { 25745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (ferror(pp->f)) { 25845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_error_set(YASM_ERROR_IO, 25945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org N_("error when reading from file")); 26045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_errwarn_propagate(pp->errwarns, 26145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_linemap_get_current(pp->cur_lm)); 26245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 26345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org break; 26445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 26545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org p += strlen(p); 26645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (p > buf && p[-1] == '\n') 26745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org break; 26845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if ((p-buf) >= bufsize) { 26945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Increase size of buffer */ 27045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org char *oldbuf = buf; 27145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org bufsize *= 2; 27245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org buf = yasm_xrealloc(buf, (size_t)bufsize); 27345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org p = buf + (p-oldbuf); 27445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 27545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 27645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 27745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (p == buf) { 27845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* No data; must be at EOF */ 27945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_xfree(buf); 28045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org return NULL; 28145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 28245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 28345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Strip the line ending */ 28445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org buf[strcspn(buf, "\r\n")] = '\0'; 28545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 28645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org return buf; 28745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 28845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 28945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic size_t 29045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_get_included_file(yasm_preproc *preproc, char *buf, 29145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org size_t max_size) 29245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 29345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org char *p = buf; 29445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org int ch = '\0'; 29545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org size_t n = 0; 29645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_preproc_cpp *pp = (yasm_preproc_cpp *)preproc; 29745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 29845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (! (pp->flags & CPP_HAS_GENERATED_DEPS) ) { 29945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org pp->flags |= CPP_HAS_GENERATED_DEPS; 30045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 30145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_generate_deps(pp); 30245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 30345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Skip target name and first dependency. */ 30445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org while (ch != ':') 30545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org ch = fgetc(pp->f_deps); 30645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 30745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org fgetc(pp->f_deps); /* Discard space after colon. */ 30845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 30945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org while (ch != ' ' && ch != EOF) 31045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org ch = fgetc(pp->f_deps); 31145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 31245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (ch == EOF) 31345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org return 0; 31445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 31545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 31645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org while (n < max_size) { 31745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org ch = fgetc(pp->f_deps); 31845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 31945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (ch == ' ' || ch == EOF) { 32045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org *p = '\0'; 32145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org return n; 32245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 32345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 32445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Eat any silly characters. */ 32545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org if (ch < ' ') 32645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org continue; 32745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 32845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org *p++ = ch; 32945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org n++; 33045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org } 33145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 33245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Ensure the buffer is null-terminated. */ 33345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org *(p - 1) = '\0'; 33445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org return n; 33545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 33645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 33745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 33845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_add_include_file(yasm_preproc *preproc, const char *filename) 33945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 34045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_preproc_cpp *pp = (yasm_preproc_cpp *)preproc; 34145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 34245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_arg_entry *arg = yasm_xmalloc(sizeof(cpp_arg_entry)); 34345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg->op = "-include"; 34445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg->param = yasm__xstrdup(filename); 34545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 34645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org TAILQ_INSERT_TAIL(&pp->cpp_args, arg, entry); 34745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 34845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 34945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 35045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_predefine_macro(yasm_preproc *preproc, const char *macronameval) 35145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 35245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_preproc_cpp *pp = (yasm_preproc_cpp *)preproc; 35345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 35445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_arg_entry *arg = yasm_xmalloc(sizeof(cpp_arg_entry)); 35545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg->op = "-D"; 35645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg->param = yasm__xstrdup(macronameval); 35745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 35845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org TAILQ_INSERT_TAIL(&pp->cpp_args, arg, entry); 35945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 36045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 36145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 36245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_undefine_macro(yasm_preproc *preproc, const char *macroname) 36345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 36445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org yasm_preproc_cpp *pp = (yasm_preproc_cpp *)preproc; 36545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 36645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_arg_entry *arg = yasm_xmalloc(sizeof(cpp_arg_entry)); 36745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg->op = "-U"; 36845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org arg->param = yasm__xstrdup(macroname); 36945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 37045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org TAILQ_INSERT_TAIL(&pp->cpp_args, arg, entry); 37145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 37245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 37345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 37445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_define_builtin(yasm_preproc *preproc, const char *macronameval) 37545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 37645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* Handle a builtin as if it were a predefine. */ 37745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_predefine_macro(preproc, macronameval); 37845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 37945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 38045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgstatic void 38145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgcpp_preproc_add_standard(yasm_preproc *preproc, const char **macros) 38245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org{ 38345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org /* TODO */ 38445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org} 38545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 38645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org/******************************************************************************* 38745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org Preprocessor module object. 38845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org*******************************************************************************/ 38945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org 39045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.orgyasm_preproc_module yasm_cpp_LTX_preproc = { 39145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org "Run input through external C preprocessor", 39245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org "cpp", 39345afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_create, 39445afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_destroy, 39545afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_get_line, 39645afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_get_included_file, 39745afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_add_include_file, 39845afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_predefine_macro, 39945afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_undefine_macro, 40045afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_define_builtin, 40145afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org cpp_preproc_add_standard 40245afe016bed87b9c6946184709058b39ede3f77ajwong@chromium.org}; 403