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mercury/util/mkinit.c
Zoltan Somogyi 1ed9e4e04c A program to help reformat C header files containing multi-line macro 
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Branches: main

util/pad_backslash.c:
	A program to help reformat C header files containing multi-line macro
	definitions. It is not installed or even by compiled by default, so
	it should have no impact on anyone, but will be available to
	developers.
2006-10-10 08:26:05 +00:00

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42 KiB
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/*
** vim:sw=4 ts=4 expandtab
*/
/*
** Copyright (C) 1995-2006 The University of Melbourne.
** This file may only be copied under the terms of the GNU General
** Public License - see the file COPYING in the Mercury distribution.
*/
/*
** File: mkinit.c
** Main authors: zs, fjh
**
** Given a list of .c or .init files on the command line, this program
** produces the initialization file (usually called *_init.c) on stdout.
** The initialization file is a small C program that calls the initialization
** functions for all the modules in a Mercury program.
**
** Alternatively, if invoked with the -k option, this program produces a
** list of intialization directives on stdout. This mode of operation is
** is used when building .init files for libraries.
**
*/
/*---------------------------------------------------------------------------*/
/* mercury_std.h includes mercury_regs.h, and must precede system headers */
#include "mercury_conf.h"
#include "mercury_std.h"
#include "getopt.h"
#include "mercury_array_macros.h"
/*
** mercury_array_macros.h uses the MR_NEW_ARRAY and MR_RESIZE_ARRAY macros.
*/
#define MR_NEW_ARRAY(type, num) \
((type *) malloc((num) * sizeof(type)))
#define MR_RESIZE_ARRAY(ptr, type, num) \
((type *) realloc((ptr), (num) * sizeof(type)))
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#ifdef MR_HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef MR_HAVE_UNISTD_H
#include <unistd.h>
#endif
/* --- adjustable limits --- */
#define MAXCALLS 40 /* maximum number of calls per function */
#define MAXLINE 256 /* maximum number of characters per line */
/* (characters after this limit are ignored) */
/* --- used to collect a list of strings --- */
typedef struct String_List_struct {
char *data;
struct String_List_struct *next;
} String_List;
static const char if_need_to_init[] =
"#if defined(MR_MAY_NEED_INITIALIZATION)\n";
static const char if_need_term_size[] =
"#if defined(MR_RECORD_TERM_SIZES)\n";
static const char if_need_deep_prof[] =
"#if defined(MR_DEEP_PROFILING)\n";
typedef enum
{
PURPOSE_INIT = 0,
PURPOSE_TYPE_TABLE = 1,
PURPOSE_DEBUGGER = 2,
PURPOSE_COMPLEXITY = 3,
PURPOSE_PROC_STATIC = 4,
PURPOSE_REQ_INIT = 5,
PURPOSE_REQ_FINAL = 6
} Purpose;
const char *main_func_name[] =
{
"init_modules",
"init_modules_type_tables",
"init_modules_debugger",
"init_modules_complexity_procs",
"write_out_proc_statics",
"init_modules_required",
"final_modules_required"
};
const char *module_suffix[] =
{
"init",
"init_type_tables",
"init_debugger",
"init_complexity_procs",
"write_out_proc_statics",
"",
"",
};
const char *init_suffix[] =
{
"",
"_type_tables",
"_debugger",
"_complexity",
"write_out_proc_statics"
};
const char *bunch_function_guard[] =
{
if_need_to_init,
NULL,
if_need_to_init,
if_need_term_size,
if_need_deep_prof,
NULL,
NULL,
};
const char *main_func_guard[] =
{
NULL,
NULL,
NULL,
if_need_term_size,
if_need_deep_prof,
NULL,
NULL,
};
const char *main_func_body_guard[] =
{
if_need_to_init,
NULL,
if_need_to_init,
NULL,
NULL,
NULL,
NULL
};
const char *main_func_arg_defn[] =
{
"void",
"void",
"void",
"void",
"FILE *fp",
"void",
"void"
};
const char *main_func_arg_decl[] =
{
"void",
"void",
"void",
"void",
"FILE *",
"void",
"void"
};
const char *main_func_arg[] =
{
"",
"",
"",
"",
"fp",
"",
""
};
/* --- macros--- */
#define SYS_PREFIX_1 "sys_init"
#define SYS_PREFIX_2 "mercury_sys_init"
#define matches_prefix(s, prefix) \
(strncmp((s), (prefix), sizeof(prefix)-1) == 0)
#define sys_init_prefix(s) \
( matches_prefix(s, SYS_PREFIX_1) || \
matches_prefix(s, SYS_PREFIX_2) )
/* --- global variables --- */
static const char *MR_progname = NULL;
/*
** List of names of the modules to call all the usual initialization
** functions for: "init", "init_type_tables", "init_debugger" and (with
** the right #defines) "init_complexity_procs" and "write_out_proc_statics".
*/
static const char **std_modules = NULL;
static int std_module_max = 0;
static int std_module_next = 0;
#define MR_INIT_STD_MODULE_SIZE 100
/*
** List of names of handwritten modules, for which we call a limited set
** of initialization functions: "init", "init_type_tables" and (with
** the right #defines) "write_out_proc_statics". We don't call
** "init_debugger" functions since handwritten modules don't have module
** layouts, and we don't generate "init_complexity_procs" since they have
** no Mercury code to measure the complexity of.
*/
static const char **special_modules = NULL;
static int special_module_max = 0;
static int special_module_next = 0;
#define MR_INIT_SPECIAL_MODULE_SIZE 10
/*
** The concatenation of std_modules and special_modules; created with the
** right size (std_module_next + special_module_next).
*/
static const char **std_and_special_modules = NULL;
/*
** List of names of modules that have initialization functions that should
** always be run. This is currently used to initialize the states of constraint
** solvers. We call an "init_required" function for each such module.
*/
static const char **req_init_modules = NULL;
static int req_init_module_max = 0;
static int req_init_module_next = 0;
#define MR_INIT_REQ_MODULE_SIZE 10
/*
** List of names of modules that have finalisation functions that should
** always be run. We call a "final_required" function for each such module.
*/
static const char **req_final_modules = NULL;
static int req_final_module_max = 0;
static int req_final_module_next = 0;
#define MR_FINAL_REQ_MODULE_SIZE 10
/*
** List of names of environment variables whose values should be sampled
** at initialization. The list is not ordered, but must not contain duplicates,
** since that would lead to duplicate definitions of C global variables and
** hence errors from the C compiler.
*/
static const char **mercury_env_vars = NULL;
static int mercury_env_var_max = 0;
static int mercury_env_var_next = 0;
#define MR_ENV_VAR_LIST_SIZE 10
/*
** This should be kept in sync with the code of c_global_var_name
** in llds_out.m and global_var_name in mlds_to_c.m.
*/
const char *envvar_prefix = "mercury_envvar_";
/* options and arguments, set by parse_options() */
static const char *output_file_name = NULL;
static const char *entry_point = "mercury__main_2_0";
static const char *hl_entry_point = "main_2_p_0";
static const char *grade = "";
static int maxcalls = MAXCALLS;
static int num_files;
static char **files;
static MR_bool output_main_func = MR_TRUE;
static MR_bool need_initialization_code = MR_FALSE;
static MR_bool need_tracing = MR_FALSE;
static MR_bool output_lib_init = MR_FALSE;
static const char *experimental_complexity = NULL;
static int num_experimental_complexity_procs = 0;
static int num_errors = 0;
/* List of options to pass to the runtime */
static String_List *runtime_flags = NULL;
/* Pointer to tail of the runtime_flags list */
static String_List **runtime_flags_tail = &runtime_flags;
/* List of directories to search for init files */
static String_List *init_file_dirs = NULL;
/* Pointer to tail of the init_file_dirs list */
static String_List **init_file_dirs_tail = &init_file_dirs;
/* List of functions to always execute at initialization */
static String_List *always_exec_funcs = NULL;
/* Pointer to tail of the init_file_dirs list */
static String_List **always_exec_funcs_tail = &always_exec_funcs;
/* --- code fragments to put in the output file --- */
static const char header1[] =
"/*\n"
"** This code was automatically generated by mkinit - do not edit.\n"
"**\n"
"** Grade: %s\n"
"** Input files:\n"
"**\n"
;
static const char header2[] =
"*/\n"
"\n"
"#include <stddef.h>\n"
"#include \"mercury_init.h\"\n"
"#include \"mercury_grade.h\"\n"
"\n"
"#define MR_TRACE_ENABLED %d\n"
"#if MR_TRACE_ENABLED\n"
" #define MR_MAY_NEED_INITIALIZATION\n"
"#endif\n"
"\n"
"/*\n"
"** Work around a bug in the Solaris 2.X (X<=4) linker;\n"
"** on these machines, init_gc must be statically linked.\n"
"*/\n"
"\n"
"#ifdef MR_CONSERVATIVE_GC\n"
"static void init_gc(void)\n"
"{\n"
" GC_INIT();\n"
"}\n"
"#endif\n"
;
static const char mercury_funcs1[] =
"\n"
"#ifdef MR_HIGHLEVEL_CODE\n"
" extern void MR_CALL %s(void);\n"
"#else\n"
" MR_declare_entry(%s);\n"
"#endif\n"
"\n"
"#if defined(MR_USE_DLLS)\n"
" #if !defined(libmer_DEFINE_DLL)\n"
" #define libmer_impure_ptr \\\n"
" (*__imp_libmer_impure_ptr)\n"
" extern void *libmer_impure_ptr;\n"
" #endif\n"
" #if !defined(libmercury_DEFINE_DLL)\n"
" #define libmercury_impure_ptr \\\n"
" (*__imp_libmercury_impure_ptr)\n"
" extern void *libmercury_impure_ptr;\n"
" #endif\n"
"#endif\n"
"\n"
"void\n"
"mercury_init(int argc, char **argv, void *stackbottom)\n"
"{\n"
"\n"
"#ifdef MR_CONSERVATIVE_GC\n"
" /*\n"
" ** Explicitly register the bottom of the stack, so that the\n"
" ** GC knows where it starts. This is necessary for AIX 4.1\n"
" ** on RS/6000, and for gnu-win32 on Windows 95 or NT.\n"
" ** It may also be helpful on other systems.\n"
" */\n"
" GC_stackbottom = stackbottom;\n"
"#endif\n"
"\n"
"/*\n"
"** If we're using DLLs on gnu-win32, then we need\n"
"** to take special steps to initialize _impure_ptr\n"
"** for the DLLs.\n"
"*/\n"
"#if defined(MR_USE_DLLS)\n"
" #if !defined(libmer_DEFINE_DLL)\n"
" libmer_impure_ptr = _impure_ptr;\n"
" #endif\n"
" #if !defined(libmercury_DEFINE_DLL)\n"
" libmercury_impure_ptr = _impure_ptr;\n"
" #endif\n"
"#endif\n"
"\n";
static const char mercury_funcs2[] =
" MR_address_of_mercury_init_io = mercury_init_io;\n"
" MR_address_of_init_modules = init_modules;\n"
" MR_address_of_init_modules_type_tables = init_modules_type_tables;\n"
" MR_address_of_init_modules_debugger = init_modules_debugger;\n"
"#ifdef MR_RECORD_TERM_SIZES\n"
" MR_address_of_init_modules_complexity = init_modules_complexity_procs;\n"
"#endif\n"
"#ifdef MR_DEEP_PROFILING\n"
" MR_address_of_write_out_proc_statics =\n"
" write_out_proc_statics;\n"
"#endif\n"
" MR_address_of_init_modules_required = init_modules_required;\n"
" MR_address_of_final_modules_required = final_modules_required;\n"
"#ifdef MR_RECORD_TERM_SIZES\n"
" MR_complexity_procs = MR_complexity_proc_table;\n"
" MR_num_complexity_procs = %d;\n"
"#endif\n"
" MR_type_ctor_info_for_univ = ML_type_ctor_info_for_univ;\n"
" MR_type_info_for_type_info = (MR_TypeCtorInfo)\n"
" &ML_type_info_for_type_info;\n"
" MR_type_info_for_pseudo_type_info = (MR_TypeCtorInfo)\n"
" &ML_type_info_for_pseudo_type_info;\n"
" MR_type_info_for_list_of_univ = (MR_TypeInfo)\n"
" &ML_type_info_for_list_of_univ;\n"
" MR_type_info_for_list_of_int = (MR_TypeInfo)\n"
" &ML_type_info_for_list_of_int;\n"
" MR_type_info_for_list_of_char = (MR_TypeInfo)\n"
" &ML_type_info_for_list_of_char;\n"
" MR_type_info_for_list_of_string = (MR_TypeInfo)\n"
" &ML_type_info_for_list_of_string;\n"
" MR_type_info_for_list_of_type_info = (MR_TypeInfo)\n"
" &ML_type_info_for_list_of_type_info;\n"
" MR_type_info_for_list_of_pseudo_type_info = (MR_TypeInfo)\n"
" &ML_type_info_for_list_of_pseudo_type_info;\n"
"#ifdef MR_CONSERVATIVE_GC\n"
" MR_address_of_init_gc = init_gc;\n"
"#endif\n"
" MR_library_initializer = ML_io_init_state;\n"
" MR_library_finalizer = ML_io_finalize_state;\n"
" MR_io_stdin_stream = ML_io_stdin_stream;\n"
" MR_io_stdout_stream = ML_io_stdout_stream;\n"
" MR_io_stderr_stream = ML_io_stderr_stream;\n"
" MR_io_print_to_cur_stream = ML_io_print_to_cur_stream;\n"
" MR_io_print_to_stream = ML_io_print_to_stream;\n"
"#if MR_TRACE_ENABLED\n"
" MR_exec_trace_func_ptr = MR_trace_real;\n"
" MR_register_module_layout = MR_register_module_layout_real;\n"
" MR_address_of_trace_getline = MR_trace_getline;\n"
" MR_address_of_trace_get_command = MR_trace_get_command;\n"
" MR_address_of_trace_browse_all_on_level =\n"
" MR_trace_browse_all_on_level;\n"
" MR_address_of_trace_interrupt_handler =\n"
" MR_trace_interrupt_handler;\n"
" #ifdef MR_USE_EXTERNAL_DEBUGGER\n"
" MR_address_of_trace_init_external = MR_trace_init_external;\n"
" MR_address_of_trace_final_external = MR_trace_final_external;\n"
" #endif\n"
"#else\n"
" MR_exec_trace_func_ptr = MR_trace_fake;\n"
" MR_register_module_layout = NULL;\n"
" MR_address_of_trace_getline = NULL;\n"
" MR_address_of_trace_get_command = NULL;\n"
" MR_address_of_trace_browse_all_on_level = NULL;\n"
" MR_address_of_trace_interrupt_handler = NULL;\n"
" #ifdef MR_USE_EXTERNAL_DEBUGGER\n"
" MR_address_of_trace_init_external = NULL;\n"
" MR_address_of_trace_final_external = NULL;\n"
" #endif\n"
"#endif\n"
"#if defined(MR_USE_GCC_NONLOCAL_GOTOS) && !defined(MR_USE_ASM_LABELS)\n"
" MR_do_init_modules();\n"
"#endif\n"
"#ifdef MR_HIGHLEVEL_CODE\n"
" MR_program_entry_point = %s;\n"
"#else\n"
" MR_program_entry_point = MR_ENTRY(%s);\n"
"#endif\n"
;
static const char mercury_funcs3[] =
"\n"
" mercury_runtime_init(argc, argv);\n"
"\n"
;
static const char mercury_funcs4[] =
" return;\n"
"}\n"
"\n"
"void\n"
"mercury_call_main(void)\n"
"{\n"
" mercury_runtime_main();\n"
"}\n"
"\n"
"int\n"
"mercury_terminate(void)\n"
"{\n"
" return mercury_runtime_terminate();\n"
"}\n"
"\n"
"int\n"
"mercury_main(int argc, char **argv)\n"
"{\n"
/*
** Note that the address we use for the stack base
** needs to be word-aligned (the MPS GC requires this).
** That's why we give dummy the type `void *' rather than
** e.g. `char'.
*/
" void *dummy;\n"
" mercury_init(argc, argv, &dummy);\n"
" mercury_call_main();\n"
" return mercury_terminate();\n"
"}\n"
"\n"
"/* ensure that everything gets compiled in the same grade */\n"
"static const void *const MR_grade = &MR_GRADE_VAR;\n"
;
static const char main_func[] =
"\n"
"int\n"
"main(int argc, char **argv)\n"
"{\n"
" return mercury_main(argc, argv);\n"
"}\n"
;
/* --- function prototypes --- */
static void parse_options(int argc, char *argv[]);
static void usage(void);
static void set_output_file(void);
static void do_path_search(void);
static char *find_init_file(const char *base_name);
static MR_bool file_exists(const char *filename);
static char *read_line(const char *filename, FILE *fp, int max);
static void output_complexity_proc(const char *procname);
static void output_complexity_experiment_table(const char *filename);
static void output_headers(void);
static int output_sub_init_functions(Purpose purpose,
const char **func_names, int num_func_names);
static void output_main_init_function(Purpose purpose, int num_bunches);
static void output_main(void);
static int output_lib_init_file(void);
static int output_init_program(void);
static void process_file(const char *filename);
static void process_init_file(const char *filename);
static void output_init_function(const char *func_name,
int *num_bunches_ptr, int *num_calls_in_cur_bunch_ptr,
Purpose purpose);
static int get_line(FILE *file, char *line, int line_max);
static void *checked_malloc(size_t size);
static char *checked_strdup(const char *str);
static char *checked_strdupcat(const char *str, const char *suffix);
/*---------------------------------------------------------------------------*/
#ifndef MR_HAVE_STRERROR
/*
** Apparently SunOS 4.1.3 doesn't have strerror()
** (!%^&!^% non-ANSI systems, grumble...)
**
** This code is duplicated in runtime/mercury_prof.c.
*/
extern int sys_nerr;
extern char *sys_errlist[];
char *
strerror(int errnum)
{
if (errnum >= 0 && errnum < sys_nerr && sys_errlist[errnum] != NULL) {
return sys_errlist[errnum];
} else {
static char buf[30];
sprintf(buf, "Error %d", errnum);
return buf;
}
}
#endif
/*---------------------------------------------------------------------------*/
#ifdef CHECK_GET_LINE
FILE *check_fp;
#endif
int
main(int argc, char **argv)
{
int exit_status;
MR_progname = argv[0];
parse_options(argc, argv);
#ifdef CHECK_GET_LINE
check_fp = fopen(".check_get_line", "w");
/* If the open fails, we won't write to the file */
#endif
set_output_file();
if (output_lib_init) {
exit_status = output_lib_init_file(); /* Output a .init file. */
} else {
exit_status = output_init_program(); /* Output a _init.c file. */
}
return exit_status;
}
/*---------------------------------------------------------------------------*/
/*
** Output the initialisation file for a Mercury library, the .init file.
*/
static int
output_lib_init_file(void)
{
int filenum;
int i;
for (filenum = 0; filenum < num_files; filenum++) {
process_file(files[filenum]);
}
for (i = 0; i < std_module_next; i++) {
printf("INIT %s%s\n", std_modules[i], module_suffix[PURPOSE_INIT]);
}
for (i = 0; i < req_init_module_next; i++) {
printf("REQUIRED_INIT %s\n", req_init_modules[i]);
}
for (i = 0; i < req_final_module_next; i++) {
printf("REQUIRED_FINAL %s\n", req_final_modules[i]);
}
for (i = 0; i < mercury_env_var_next; i++) {
printf("ENVVAR %s\n", mercury_env_vars[i]);
}
if (num_errors > 0) {
fprintf(stderr, "%s: error while creating .init file.\n", MR_progname);
return EXIT_FAILURE;
} else {
return EXIT_SUCCESS;
}
}
/*---------------------------------------------------------------------------*/
/*
** Output the initialisation program for a Mercury executable, the *_init.c
** file.
*/
static int
output_init_program(void)
{
int filenum;
int num_bunches;
int i;
do_path_search();
output_headers();
for (filenum = 0; filenum < num_files; filenum++) {
process_file(files[filenum]);
}
printf("\n");
for (i = 0; i < mercury_env_var_next; i++) {
printf("MR_Word %s%s = 0;\n", envvar_prefix, mercury_env_vars[i]);
}
if (need_initialization_code) {
printf("#define MR_MAY_NEED_INITIALIZATION\n\n");
}
std_and_special_modules = MR_NEW_ARRAY(const char *,
std_module_next + special_module_next);
for (i = 0; i < std_module_next; i++) {
std_and_special_modules[i] = std_modules[i];
}
for (i = 0; i < special_module_next; i++) {
std_and_special_modules[std_module_next + i] = special_modules[i];
}
num_bunches = output_sub_init_functions(PURPOSE_INIT,
std_and_special_modules, std_module_next + special_module_next);
output_main_init_function(PURPOSE_INIT, num_bunches);
num_bunches = output_sub_init_functions(PURPOSE_TYPE_TABLE,
std_and_special_modules, std_module_next + special_module_next);
output_main_init_function(PURPOSE_TYPE_TABLE, num_bunches);
num_bunches = output_sub_init_functions(PURPOSE_DEBUGGER,
std_modules, std_module_next);
output_main_init_function(PURPOSE_DEBUGGER, num_bunches);
num_bunches = output_sub_init_functions(PURPOSE_COMPLEXITY,
std_modules, std_module_next);
output_main_init_function(PURPOSE_COMPLEXITY, num_bunches);
num_bunches = output_sub_init_functions(PURPOSE_PROC_STATIC,
std_and_special_modules, std_module_next + special_module_next);
output_main_init_function(PURPOSE_PROC_STATIC, num_bunches);
num_bunches = output_sub_init_functions(PURPOSE_REQ_INIT,
req_init_modules, req_init_module_next);
output_main_init_function(PURPOSE_REQ_INIT, num_bunches);
num_bunches = output_sub_init_functions(PURPOSE_REQ_FINAL,
req_final_modules, req_final_module_next);
output_main_init_function(PURPOSE_REQ_FINAL, num_bunches);
output_main();
if (num_errors > 0) {
fputs("/* Force syntax error, since there were */\n", stdout);
fputs("/* errors in the generation of this file */\n", stdout);
fputs("#error \"You need to remake this file\"\n", stdout);
if (output_file_name != NULL) {
(void) fclose(stdout);
(void) remove(output_file_name);
}
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
/*---------------------------------------------------------------------------*/
static void
parse_options(int argc, char *argv[])
{
int c;
int i;
String_List *tmp_slist;
while ((c = getopt(argc, argv, "A:c:g:iI:lo:r:tw:xX:k")) != EOF) {
switch (c) {
case 'A':
/*
** Add the argument to the end of the list of always executed
** initialization functions.
*/
if (optarg[0] != '\0') {
tmp_slist = (String_List *)
checked_malloc(sizeof(String_List));
tmp_slist->next = NULL;
tmp_slist->data = (char *) checked_malloc(strlen(optarg) + 1);
strcpy(tmp_slist->data, optarg);
*always_exec_funcs_tail = tmp_slist;
always_exec_funcs_tail = &tmp_slist->next;
}
break;
case 'c':
if (sscanf(optarg, "%d", &maxcalls) != 1) {
usage();
}
break;
case 'g':
grade = optarg;
break;
case 'i':
need_initialization_code = MR_TRUE;
break;
case 'I':
/*
** Add the directory name to the end of the
** search path for `.init' files.
*/
tmp_slist = (String_List *) checked_malloc(sizeof(String_List));
tmp_slist->next = NULL;
tmp_slist->data = (char *) checked_malloc(strlen(optarg) + 1);
strcpy(tmp_slist->data, optarg);
*init_file_dirs_tail = tmp_slist;
init_file_dirs_tail = &tmp_slist->next;
break;
case 'l':
output_main_func = MR_FALSE;
break;
case 'o':
if (strcmp(optarg, "-") == 0) {
output_file_name = NULL; /* output to stdout */
} else {
output_file_name = optarg;
}
break;
case 'r':
/*
** Add the argument to the end of the list of runtime flags.
*/
if (optarg[0] != '\0') {
tmp_slist = (String_List *)
checked_malloc(sizeof(String_List));
tmp_slist->next = NULL;
tmp_slist->data = (char *) checked_malloc(strlen(optarg) + 1);
strcpy(tmp_slist->data, optarg);
*runtime_flags_tail = tmp_slist;
runtime_flags_tail = &tmp_slist->next;
}
break;
case 't':
need_tracing = MR_TRUE;
need_initialization_code = MR_TRUE;
break;
case 'w':
hl_entry_point = entry_point = optarg;
break;
case 'x':
/* We always assume this option. */
break;
case 'X':
experimental_complexity = optarg;
break;
case 'k':
output_lib_init = MR_TRUE;
break;
default:
usage();
}
}
num_files = argc - optind;
if (num_files <= 0) {
usage();
}
files = argv + optind;
}
static void
usage(void)
{
fputs("Usage: mkinit [options] files...\n", stderr);
fputs("Options:\n", stderr);
fputs(" -c maxcalls:\tset the max size of an init function\n", stderr);
fputs(" -g grade:\tset the grade of the executable\n", stderr);
fputs(" -i:\t\tenable initialization code\n", stderr);
fputs(" -l:\t\tdo not output main function\n", stderr);
fputs(" -o file:\toutput to the named file\n", stderr);
fputs(" -r word:\tadd word to the flags for the runtime\n", stderr);
fputs(" -t:\t\tenable execution tracing\n", stderr);
fputs(" -w entry:\tset the entry point to the given label\n", stderr);
fputs(" -I dir:\tadd dir to the search path for init files\n", stderr);
fputs(" -k:\t\tgenerate the .init for a library\n", stderr);
exit(EXIT_FAILURE);
}
/*---------------------------------------------------------------------------*/
/*
** If the `-o' option was used to specify the output file,
** and the file name specified is not `-' (which we take to mean stdout),
** then reassign stdout to the specified file.
*/
static void
set_output_file(void)
{
if (output_file_name != NULL) {
FILE *result = freopen(output_file_name, "w", stdout);
if (result == NULL) {
fprintf(stderr,
"%s: error opening output file `%s': %s\n",
MR_progname, output_file_name,
strerror(errno));
exit(EXIT_FAILURE);
}
}
}
/*---------------------------------------------------------------------------*/
/*
** Scan the list of files for ones not found in the current directory,
** and replace them with their full path equivalent if they are found
** in the list of search directories.
*/
static void
do_path_search(void)
{
int filenum;
char *init_file;
for (filenum = 0; filenum < num_files; filenum++) {
init_file = find_init_file(files[filenum]);
if (init_file != NULL) {
files[filenum] = init_file;
}
}
}
/*
** Search the init file directory list to locate the file.
** If the file is in the current directory or is not in any of the
** search directories, then return NULL. Otherwise return the full
** path name to the file.
**
** It is the caller's responsibility to free the returned buffer
** holding the full path name when it is no longer needed.
*/
static char *
find_init_file(const char *base_name)
{
char *filename;
char *dirname;
String_List *dir_ptr;
int dirlen;
int baselen;
int len;
if (file_exists(base_name)) {
/* File is in current directory, so no search required */
return NULL;
}
baselen = strlen(base_name);
for (dir_ptr = init_file_dirs; dir_ptr != NULL; dir_ptr = dir_ptr->next) {
dirname = dir_ptr->data;
dirlen = strlen(dirname);
len = dirlen + 1 + baselen;
filename = (char *) checked_malloc(len + 1);
strcpy(filename, dirname);
filename[dirlen] = '/';
strcpy(filename + dirlen + 1, base_name);
if (file_exists(filename)) {
return filename;
}
free(filename);
}
/* Did not find file */
return NULL;
}
/*
** Check whether a file exists.
*/
static MR_bool
file_exists(const char *filename)
{
#ifdef MR_HAVE_SYS_STAT_H
struct stat buf;
return (stat(filename, &buf) == 0);
#else
FILE *f;
f = fopen(filename, "rb");
if (f != NULL) {
fclose(f);
return MR_TRUE;
} else {
return MR_FALSE;
}
#endif
}
/*---------------------------------------------------------------------------*/
/*
** Read a line from a file, and return a pointer to a malloc'd buffer
** holding the line (without the final newline). If EOF occurs on a
** nonempty line, treat the EOF as a newline; if EOF occurs on an empty
** line, return NULL.
*/
char *
read_line(const char *filename, FILE *fp, int max)
{
char *buf;
int c;
int i;
buf = checked_malloc(max + 1);
i = 0;
while ((c = getc(fp)) != EOF && c != '\n') {
if (i >= max) {
fprintf(stderr, "%s: line too long in file `%s'\n",
MR_progname, filename);
num_errors++;
return NULL;
}
buf[i++] = c;
}
if (c == '\n' || i > 0) {
if (i >= max) {
fprintf(stderr, "%s: line too long in file `%s'\n",
MR_progname, filename);
num_errors++;
return NULL;
}
buf[i] = '\0';
return buf;
} else {
free(buf);
return NULL;
}
}
#define MAX_PROCNAME_LEN 1024
static void
output_complexity_proc(const char *procname)
{
printf("{ \"%s\", -1, -1, NULL,\n", procname);
printf("MR_COMPLEXITY_IS_INACTIVE, NULL, 0, NULL, NULL },\n");
}
static void
output_complexity_experiment_table(const char *filename)
{
const char *procname;
FILE *fp;
fp = fopen(filename, "r");
if (fp == NULL) {
fprintf(stderr, "%s: error opening file `%s': %s\n",
MR_progname, filename, strerror(errno));
num_errors++;
return;
}
printf("\nMR_ComplexityProc MR_complexity_proc_table[] = {\n");
num_experimental_complexity_procs = 0;
while ((procname = read_line(filename, fp, MAX_PROCNAME_LEN)) != NULL) {
num_experimental_complexity_procs++;
output_complexity_proc(procname);
}
printf("};\n");
}
static void
output_headers(void)
{
int filenum;
printf(header1, grade);
for (filenum = 0; filenum < num_files; filenum++) {
fputs("** ", stdout);
fputs(files[filenum], stdout);
putc('\n', stdout);
}
printf(header2, need_tracing);
}
static int
output_sub_init_functions(Purpose purpose, const char **func_names,
int num_func_names)
{
int funcnum;
int num_bunches;
int num_calls_in_cur_bunch;
fputs("\n", stdout);
if (bunch_function_guard[purpose] != NULL) {
fputs(bunch_function_guard[purpose], stdout);
fputs("\n", stdout);
}
printf("static void %s_0(%s)\n",
main_func_name[purpose], main_func_arg_defn[purpose]);
fputs("{\n", stdout);
num_bunches = 0;
num_calls_in_cur_bunch = 0;
for (funcnum = 0; funcnum < num_func_names; funcnum++) {
output_init_function(func_names[funcnum], &num_bunches,
&num_calls_in_cur_bunch, purpose);
}
fputs("}\n", stdout);
if (bunch_function_guard[purpose] != NULL) {
fputs("\n#endif\n", stdout);
}
return num_bunches;
}
static void
output_main_init_function(Purpose purpose, int num_bunches)
{
int i;
fputs("\n", stdout);
if (main_func_guard[purpose] != NULL) {
fputs(main_func_guard[purpose], stdout);
fputs("\n", stdout);
}
printf("\nstatic void %s(%s)\n",
main_func_name[purpose], main_func_arg_defn[purpose]);
fputs("{\n", stdout);
if (main_func_body_guard[purpose] != NULL) {
fputs(main_func_body_guard[purpose], stdout);
}
for (i = 0; i <= num_bunches; i++) {
printf("\t%s_%d(%s);\n",
main_func_name[purpose], i, main_func_arg[purpose]);
}
if (main_func_body_guard[purpose] != NULL) {
fputs("#endif\n", stdout);
}
fputs("}\n", stdout);
if (main_func_guard[purpose] != NULL) {
fputs("\n#endif\n", stdout);
}
}
static void
output_main(void)
{
String_List *list;
char *options_str;
int i;
if (experimental_complexity != NULL) {
output_complexity_experiment_table(experimental_complexity);
} else {
printf("\nMR_ComplexityProc MR_complexity_proc_table[] = {\n");
output_complexity_proc("dummy_proc/0-0");
printf("};\n");
}
printf(mercury_funcs1, hl_entry_point, entry_point);
printf(mercury_funcs2, num_experimental_complexity_procs,
hl_entry_point, entry_point);
printf(" MR_runtime_flags = \"");
for (list = runtime_flags; list != NULL; list = list->next) {
for (options_str = list->data; *options_str != '\0'; options_str++) {
if (*options_str == '\n') {
putchar('\\');
putchar('n');
} else if (*options_str == '\t') {
putchar('\\');
putchar('t');
} else if (*options_str == '"' ||
*options_str == '\\') {
putchar('\\');
putchar(*options_str);
} else {
putchar(*options_str);
}
}
putchar(' ');
}
printf("\";\n");
printf("\n");
for (i = 0; i < mercury_env_var_next; i++) {
printf(" if (getenv(\"%s\") != NULL) {\n", mercury_env_vars[i]);
printf(" %s%s = 1;\n", envvar_prefix, mercury_env_vars[i]);
printf(" } else {\n");
printf(" %s%s = 0;\n", envvar_prefix, mercury_env_vars[i]);
printf(" }\n");
}
fputs(mercury_funcs3, stdout);
for (list = always_exec_funcs; list != NULL; list = list->next) {
printf(" %s();\n", list->data);
}
fputs(mercury_funcs4, stdout);
if (output_main_func) {
fputs(main_func, stdout);
}
}
/*---------------------------------------------------------------------------*/
static void
process_file(const char *filename)
{
int len;
len = strlen(filename);
if (len >= 2 && strcmp(filename + len - 2, ".c") == 0) {
process_init_file(filename);
} else if (len >= 5 && strcmp(filename + len - 5, ".init") == 0) {
process_init_file(filename);
} else {
fprintf(stderr,
"%s: filename `%s' must end in `.c' or `.init'\n",
MR_progname, filename);
num_errors++;
}
}
static void
process_init_file(const char *filename)
{
/*
** The strings that are supposed to be followed by other information
** (INIT, REQUIRED_INIT, and REQUIRED_FINAL) should end with
** the space that separates the keyword from the following data.
** The string that is not supposed to be following by other information
** (ENDINIT) should not have a following space, since llds_out.m and
** mlds_to_c.m do not add that space.
*/
const char * const init_str = "INIT ";
const char * const reqinit_str = "REQUIRED_INIT ";
const char * const reqfinal_str = "REQUIRED_FINAL ";
const char * const envvar_str = "ENVVAR ";
const char * const endinit_str = "ENDINIT";
const int init_strlen = strlen(init_str);
const int reqinit_strlen = strlen(reqinit_str);
const int reqfinal_strlen = strlen(reqfinal_str);
const int envvar_strlen = strlen(envvar_str);
const int endinit_strlen = strlen(endinit_str);
char line[MAXLINE];
FILE *cfile;
cfile = fopen(filename, "r");
if (cfile == NULL) {
fprintf(stderr, "%s: error opening file `%s': %s\n",
MR_progname, filename, strerror(errno));
num_errors++;
return;
}
while (get_line(cfile, line, MAXLINE) > 0) {
if (strncmp(line, init_str, init_strlen) == 0) {
char *func_name;
int func_name_len;
int j;
MR_bool special;
for (j = init_strlen; MR_isalnumunder(line[j]); j++) {
/* VOID */
}
line[j] = '\0';
func_name = line + init_strlen;
func_name_len = strlen(func_name);
if (MR_strneq(&func_name[func_name_len - 4], "init", 4)) {
func_name[func_name_len - 4] = '\0';
MR_ensure_room_for_next(std_module, const char *,
MR_INIT_STD_MODULE_SIZE);
std_modules[std_module_next] = checked_strdup(func_name);
std_module_next++;
} else {
MR_ensure_room_for_next(special_module, const char *,
MR_INIT_SPECIAL_MODULE_SIZE);
special_modules[special_module_next] =
checked_strdupcat(func_name, "_");
special_module_next++;
}
} else if (strncmp(line, reqinit_str, reqinit_strlen) == 0) {
char *func_name;
int j;
for (j = reqinit_strlen; MR_isalnumunder(line[j]); j++) {
/* VOID */
}
line[j] = '\0';
func_name = line + reqinit_strlen;
MR_ensure_room_for_next(req_init_module, const char *,
MR_INIT_REQ_MODULE_SIZE);
req_init_modules[req_init_module_next] = checked_strdup(func_name);
req_init_module_next++;
} else if (strncmp(line, reqfinal_str, reqfinal_strlen) == 0) {
char *func_name;
int j;
for (j = reqfinal_strlen; MR_isalnumunder(line[j]); j++) {
/* VOID */
}
line[j] = '\0';
func_name = line + reqfinal_strlen;
MR_ensure_room_for_next(req_final_module, const char *,
MR_FINAL_REQ_MODULE_SIZE);
req_final_modules[req_final_module_next] =
checked_strdup(func_name);
req_final_module_next++;
} else if (strncmp(line, envvar_str, envvar_strlen) == 0) {
char *envvar_name;
int i;
int j;
MR_bool found;
/*
** Check that all characters in the name of the environment
** variable are acceptable as components of a C variable name.
** Note that the variable name doesn't have to start with a letter
** because the variable name has a prefix.
*/
for (j = envvar_strlen; MR_isalnumunder(line[j]); j++) {
/* VOID */
}
if (line[j] != '\n') {
printf("mkinit: error: bad environment variable name %s\n",
line);
}
line[j] = '\0'; /* overwrite the newline */
envvar_name = line + envvar_strlen;
/*
** Since the number of distinct environment variables used by
** a program is likely to be in the single digits, linear search
** should be efficient enough.
*/
found = MR_FALSE;
for (i = 0; i < mercury_env_var_next; i++) {
if (strcmp(envvar_name, mercury_env_vars[i]) == 0) {
found = MR_TRUE;
break;
}
}
if (!found) {
MR_ensure_room_for_next(mercury_env_var, const char *,
MR_ENV_VAR_LIST_SIZE);
mercury_env_vars[mercury_env_var_next] =
checked_strdup(envvar_name);
mercury_env_var_next++;
}
} else if (strncmp(line, endinit_str, endinit_strlen) == 0) {
break;
}
}
fclose(cfile);
}
/*
** We could in theory put all calls to e.g. <module>_init_type_tables()
** functions in a single C function in the <mainmodule>_init.c file we
** generate. However, doing so turns out to be a bad idea: it leads to large
** compilation times for the <mainmodule>_init.c files. Instead, we divide
** the calls into bunches containing at most max_calls calls, with each bunch
** contained in its own function. *num_calls_in_cur_bunch_ptr says how many
** calls the current bunch already has; *num_bunches_ptr gives the number
** of the current bunch.
*/
static void
output_init_function(const char *func_name, int *num_bunches_ptr,
int *num_calls_in_cur_bunch_ptr, Purpose purpose)
{
if (*num_calls_in_cur_bunch_ptr >= maxcalls) {
printf("}\n\n");
(*num_bunches_ptr)++;
*num_calls_in_cur_bunch_ptr = 0;
printf("static void %s_%d(%s)\n",
main_func_name[purpose], *num_bunches_ptr,
main_func_arg_defn[purpose]);
printf("{\n");
}
(*num_calls_in_cur_bunch_ptr)++;
printf("\t{ extern void %s%s(%s);\n",
func_name, module_suffix[purpose], main_func_arg_decl[purpose]);
printf("\t %s%s(%s); }\n",
func_name, module_suffix[purpose], main_func_arg[purpose]);
}
/*---------------------------------------------------------------------------*/
static int
get_line(FILE *file, char *line, int line_max)
{
int c;
int num_chars;
int limit;
num_chars = 0;
limit = line_max - 2;
while ((c = getc(file)) != EOF && c != '\n') {
if (num_chars < limit) {
line[num_chars++] = c;
}
}
if (c == '\n' || num_chars > 0) {
line[num_chars++] = '\n';
}
line[num_chars] = '\0';
#ifdef CHECK_GET_LINE
if (check_fp != NULL) {
fprintf(check_fp, "%s", line);
}
#endif
return num_chars;
}
/*---------------------------------------------------------------------------*/
static void *
checked_malloc(size_t size)
{
void *mem;
mem = malloc(size);
if (mem == NULL) {
fprintf(stderr, "Out of memory\n");
exit(EXIT_FAILURE);
}
return mem;
}
static char *
checked_strdup(const char *str)
{
char *mem;
mem = malloc(strlen(str) + 1);
if (mem == NULL) {
fprintf(stderr, "Out of memory\n");
exit(EXIT_FAILURE);
}
strcpy(mem, str);
return mem;
}
static char *
checked_strdupcat(const char *str, const char *suffix)
{
char *mem;
mem = malloc(strlen(str) + strlen(suffix) + 1);
if (mem == NULL) {
fprintf(stderr, "Out of memory\n");
exit(EXIT_FAILURE);
}
strcpy(mem, str);
strcat(mem, suffix);
return mem;
}
/*---------------------------------------------------------------------------*/
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