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/****************************************************************************
* *
* GNAT COMPILER COMPONENTS *
* *
* I N I T I A L I Z E *
* *
* C Implementation File *
* *
* Copyright (C) 2014-2022, Free Software Foundation, Inc. *
* *
* GNAT is free software; you can redistribute it and/or modify it under *
* terms of the GNU General Public License as published by the Free Soft- *
* ware Foundation; either version 3, or (at your option) any later ver- *
* sion. GNAT is distributed in the hope that it will be useful, but WITH- *
* OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. *
* *
* As a special exception under Section 7 of GPL version 3, you are granted *
* additional permissions described in the GCC Runtime Library Exception, *
* version 3.1, as published by the Free Software Foundation. *
* *
* You should have received a copy of the GNU General Public License and *
* a copy of the GCC Runtime Library Exception along with this program; *
* see the files COPYING3 and COPYING.RUNTIME respectively. If not, see *
* <http://www.gnu.org/licenses/>. *
* *
* GNAT was originally developed by the GNAT team at New York University. *
* Extensive contributions were provided by Ada Core Technologies Inc. *
* *
****************************************************************************/
/* This unit provides implementation for __gnat_runtime_initialize ()
which is called in adainit() to do special initialization needed by
the GNAT runtime. */
/* The following include is here to meet the published VxWorks requirement
that the __vxworks header appear before any other include. */
#ifdef __vxworks
#include "vxWorks.h"
#endif
#ifdef IN_RTS
/* We don't have libiberty, so use malloc. */
#define xmalloc(S) malloc (S)
#define xrealloc(V,S) realloc (V,S)
#else
#include "config.h"
#include "system.h"
#endif
#include "raise.h"
#include <fcntl.h>
#ifdef __cplusplus
extern "C" {
#endif
/**************************************************/
/* __gnat_runtime_initialize (NT-mingw32 Version) */
/**************************************************/
extern void __gnat_install_handler (void);
int __gnat_wide_text_translation_required = 0;
/* wide text translation, 0=none, 1=activated */
int __gnat_rt_init_count = 0;
/* number of references to the GNAT runtime, this is used to initialize
and finalize properly the run-time. */
#if defined (__MINGW32__)
#include "mingw32.h"
#include <windows.h>
extern void __gnat_init_float (void);
extern int gnat_argc;
extern char **gnat_argv;
extern CRITICAL_SECTION ProcListCS;
extern HANDLE ProcListEvt;
#ifdef GNAT_UNICODE_SUPPORT
#define EXPAND_ARGV_RATE 128
int __gnat_do_argv_expansion = 1;
#pragma weak __gnat_do_argv_expansion
/* Assuming we are pointing to the beginning of a quoted part of an
argument, skip until the end of the quoted part. */
static void skip_quoted_string (const WCHAR **current_in,
WCHAR **current_out)
{
/* Number of backslashes buffered. */
int qbs_count = 0;
/* Pointer to current input character. */
const WCHAR *ci = *current_in;
/* Pointer to next output character. */
WCHAR *co = *current_out;
/* Skip initial quote. */
ci++;
while (*ci)
{
if (*ci == '\\')
{
/* Buffer incoming backslashes. */
qbs_count++;
}
else if (*ci == '"')
{
/* Append qbs_count / 2 backslahes. */
for (int i=0; i<qbs_count / 2; i++)
{
*co = '\\';
co++;
}
if ((qbs_count & 1) == 0)
{
/* 2n backslashes means that the quotation mark is the end of
the quoted portion. */
qbs_count = 0;
break;
}
else
{
/* Otherwise this is a double quote literal. */
qbs_count = 0;
*co = '"'; co++;
}
}
else
{
/* If the character is not a double quote we should append
qbs_count backslashes. */
for (int i=0; i<qbs_count; i++)
{
*co = '\\';
co++;
}
*co = *ci; co++;
qbs_count = 0;
}
ci++;
}
/* Handle the case in which a nul character was found instead of a closing
double quote. In that case consider all the backslashes as literal
characters. */
if (*ci == '\0')
{
for (int i=0; i<qbs_count; i++)
{
*co='\\';
co++;
}
}
*current_in = ci;
*current_out = co;
}
/* Assuming that this is the beginning of an argument. Skip characters
until we reach the character right after the last argument character. */
static void skip_argument (const WCHAR **current_in,
WCHAR **current_out)
{
/* Number of backslashes buffered. */
int bs_count = 0;
/* Pointer to current input character. */
const WCHAR *ci = *current_in;
/* Pointer to next output character. */
WCHAR *co = *current_out;
while (*ci && ! (*ci == ' ' || *ci == '\t'))
{
if (*ci == '\\')
{
/* Buffer incoming backslashes. */
bs_count++;
}
else if (*ci == '"')
{
/* Append qbs_count / 2 backslahes. */
for (int i=0; i< bs_count / 2; i++)
{
*co = '\\'; co++;
}
if ((bs_count & 1) == 0)
{
/* 2n backslashes followed by a quotation mark means that
this is a start of a quoted string. */
skip_quoted_string (&ci, &co);
}
else
{
/* Otherwise this is quotation mark literal. */
*co = '"';
co++;
}
bs_count = 0;
}
else
{
/* This is a regular character. */
/* Backslashes are interpreted literally. */
for (int i=0; i<bs_count; i++)
{
*co = '\\';
co++;
}
bs_count = 0;
*co = *ci; co++;
}
if (*ci != '\0')
{
ci++;
}
}
for (int i=0; i<bs_count; i++)
{
*co = '\\';
co++;
}
/* End the argument with a null character. */
*co = '\0';
co++;
*current_in = ci;
*current_out = co;
}
void __gnat_get_argw (const WCHAR *command_line, WCHAR ***argv, int *argc)
{
WCHAR *inline_argv;
WCHAR *co;
int arg_count = 1;
const WCHAR *ci;
inline_argv =
(WCHAR *) xmalloc ((wcslen (command_line) + 1) * sizeof (WCHAR));
co = inline_argv;
/* Start iteration on command line characters. */
ci = command_line;
/* Skip command name. Note that if the command line starts with whitechars
then the command name will be the empty string. */
skip_argument (&ci, &co);
/* Count remaining arguments. */
while (*ci)
{
/* skip whitechar */
while (*ci && (*ci == ' ' || *ci == '\t')) { ci++; }
if (*ci)
{
skip_argument (&ci, &co);
arg_count++;
}
else
break;
}
/* Allocate table with pointer to each arguments */
argv[0] = (WCHAR **) xmalloc (arg_count * sizeof (WCHAR *));
for (int idx = 0; idx < arg_count; idx++)
{
argv[0][idx] = inline_argv;
while (*inline_argv)
{
inline_argv++;
}
inline_argv++;
}
*argc = arg_count;
}
static void
append_arg (int *index, LPWSTR dir, LPWSTR value,
char ***argv, int *last, int quoted)
{
int size;
LPWSTR fullvalue;
int vallen = _tcslen (value);
int dirlen;
if (dir == NULL)
{
/* no dir prefix */
dirlen = 0;
fullvalue = (LPWSTR) xmalloc ((vallen + 1) * sizeof (TCHAR));
}
else
{
/* Add dir first */
dirlen = _tcslen (dir);
fullvalue = (LPWSTR) xmalloc ((dirlen + vallen + 1) * sizeof (TCHAR));
_tcscpy (fullvalue, dir);
}
/* Append value */
if (quoted)
{
_tcsncpy (fullvalue + dirlen, value + 1, vallen - 1);
fullvalue [dirlen + vallen - sizeof (TCHAR)] = _T ('\0');
}
else
_tcscpy (fullvalue + dirlen, value);
if (*last <= *index)
{
*last += EXPAND_ARGV_RATE;
*argv = (char **) xrealloc (*argv, (*last) * sizeof (char *));
}
size = WS2SC (NULL, fullvalue, 0);
(*argv)[*index] = (char *) xmalloc (size + sizeof (TCHAR));
WS2SC ((*argv)[*index], fullvalue, size);
free (fullvalue);
(*index)++;
}
#endif
void
__gnat_runtime_initialize (int install_handler)
{
/* increment the reference counter */
__gnat_rt_init_count++;
/* if already initialized return now */
if (__gnat_rt_init_count > 1)
return;
/* Initialize floating-point coprocessor. This call is needed because
the MS libraries default to 64-bit precision instead of 80-bit
precision, and we require the full precision for proper operation,
given that we have set Max_Digits etc with this in mind */
__gnat_init_float ();
/* Initialize the critical section and event handle for the win32_wait()
implementation, see adaint.c */
InitializeCriticalSection (&ProcListCS);
ProcListEvt = CreateEvent (NULL, FALSE, FALSE, NULL);
#ifdef GNAT_UNICODE_SUPPORT
/* Set current code page for filenames handling. */
{
char *codepage = getenv ("GNAT_CODE_PAGE");
/* Default code page is UTF-8. */
__gnat_current_codepage = CP_UTF8;
if (codepage != NULL)
{
if (strcmp (codepage, "CP_ACP") == 0)
__gnat_current_codepage = CP_ACP;
else if (strcmp (codepage, "CP_UTF8") == 0)
__gnat_current_codepage = CP_UTF8;
}
}
/* Set current encoding for the IO. */
{
char *ccsencoding = getenv ("GNAT_CCS_ENCODING");
/* Default CCS Encoding. */
__gnat_current_ccs_encoding = _O_TEXT;
__gnat_wide_text_translation_required = 0;
if (ccsencoding != NULL)
{
if (strcmp (ccsencoding, "U16TEXT") == 0)
{
__gnat_current_ccs_encoding = _O_U16TEXT;
__gnat_wide_text_translation_required = 1;
}
else if (strcmp (ccsencoding, "TEXT") == 0)
{
__gnat_current_ccs_encoding = _O_TEXT;
__gnat_wide_text_translation_required = 0;
}
else if (strcmp (ccsencoding, "WTEXT") == 0)
{
__gnat_current_ccs_encoding = _O_WTEXT;
__gnat_wide_text_translation_required = 1;
}
else if (strcmp (ccsencoding, "U8TEXT") == 0)
{
__gnat_current_ccs_encoding = _O_U8TEXT;
__gnat_wide_text_translation_required = 1;
}
}
}
/* Adjust gnat_argv to support Unicode characters. */
{
LPWSTR *wargv;
int wargc;
int k;
int last;
int argc_expanded = 0;
TCHAR result [MAX_PATH];
int quoted;
__gnat_get_argw (GetCommandLineW (), &wargv, &wargc);
if (wargv != NULL)
{
/* Set gnat_argv with arguments encoded in UTF-8. */
last = wargc + 1;
gnat_argv = (char **) xmalloc ((last) * sizeof (char *));
/* argv[0] is the executable full path-name. */
SearchPath (NULL, wargv[0], _T(".exe"), MAX_PATH, result, NULL);
append_arg (&argc_expanded, NULL, result, &gnat_argv, &last, 0);
for (k=1; k<wargc; k++)
{
quoted = (wargv[k][0] == _T('\''));
/* Check for wildcard expansion if the argument is not quoted. */
if (!quoted && __gnat_do_argv_expansion
&& (_tcsstr (wargv[k], _T("?")) != 0 ||
_tcsstr (wargv[k], _T("*")) != 0))
{
/* Wilcards are present, append all corresponding matches. */
WIN32_FIND_DATA FileData;
HANDLE hDir = FindFirstFile (wargv[k], &FileData);
LPWSTR dir = NULL;
LPWSTR ldir = _tcsrchr (wargv[k], _T('\\'));
if (ldir == NULL)
ldir = _tcsrchr (wargv[k], _T('/'));
if (hDir == INVALID_HANDLE_VALUE)
{
/* No match, append arg as-is. */
append_arg (&argc_expanded, NULL, wargv[k],
&gnat_argv, &last, quoted);
}
else
{
if (ldir != NULL)
{
int n = ldir - wargv[k] + 1;
dir = (LPWSTR) xmalloc ((n + 1) * sizeof (TCHAR));
_tcsncpy (dir, wargv[k], n);
dir[n] = _T('\0');
}
/* Append first match and all remaining ones. */
do {
/* Do not add . and .. special entries */
if (_tcscmp (FileData.cFileName, _T(".")) != 0
&& _tcscmp (FileData.cFileName, _T("..")) != 0)
append_arg (&argc_expanded, dir, FileData.cFileName,
&gnat_argv, &last, 0);
} while (FindNextFile (hDir, &FileData));
FindClose (hDir);
if (dir != NULL)
free (dir);
}
}
else
{
/* No wildcard. Store parameter as-is. Remove quote if
needed. */
append_arg (&argc_expanded, NULL, wargv[k],
&gnat_argv, &last,
quoted && __gnat_do_argv_expansion);
}
}
free (wargv[0]);
free (wargv);
gnat_argc = argc_expanded;
gnat_argv = (char **) xrealloc
(gnat_argv, argc_expanded * sizeof (char *));
}
}
#endif
if (install_handler)
__gnat_install_handler();
}
/**************************************************/
/* __gnat_runtime_initialize (init_float version) */
/**************************************************/
#elif defined (__Lynx__) || defined (__FreeBSD__) || defined(__NetBSD__) \
|| defined (__OpenBSD__)
extern void __gnat_init_float (void);
void
__gnat_runtime_initialize(int install_handler)
{
/* increment the reference counter */
__gnat_rt_init_count++;
/* if already initialized return now */
if (__gnat_rt_init_count > 1)
return;
__gnat_init_float ();
if (install_handler)
__gnat_install_handler();
}
/***********************************************/
/* __gnat_runtime_initialize (VxWorks Version) */
/***********************************************/
#elif defined(__vxworks)
extern void __gnat_init_float (void);
void
__gnat_runtime_initialize(int install_handler)
{
/* increment the reference counter */
__gnat_rt_init_count++;
/* if already initialized return now */
if (__gnat_rt_init_count > 1)
return;
__gnat_init_float ();
if (install_handler)
__gnat_install_handler();
}
#else
/***********************************************/
/* __gnat_runtime_initialize (default version) */
/***********************************************/
void
__gnat_runtime_initialize(int install_handler)
{
/* increment the reference counter */
__gnat_rt_init_count++;
/* if already initialized return now */
if (__gnat_rt_init_count > 1)
return;
if (install_handler)
__gnat_install_handler();
}
#endif
#ifdef __cplusplus
}
#endif
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