diff options
Diffstat (limited to 'cpukit/libcsupport/src/newlibc.c')
| -rw-r--r-- | cpukit/libcsupport/src/newlibc.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/cpukit/libcsupport/src/newlibc.c b/cpukit/libcsupport/src/newlibc.c deleted file mode 100644 index 79c1dc7dd4..0000000000 --- a/cpukit/libcsupport/src/newlibc.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * Implementation of hooks for the CYGNUS newlib libc - * These hooks set things up so that: - * + '_REENT' is switched at task switch time. - * - * COPYRIGHT (c) 1994 by Division Incorporated - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * $Id$ - * - */ - -#if HAVE_CONFIG_H -#include "config.h" -#endif - -#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__ -#include <rtems.h> - -#if defined(RTEMS_NEWLIB) -#include <rtems/libcsupport.h> - -/* Since we compile with strict ANSI we need to undef it to get - * prototypes for extensions - */ -#undef __STRICT_ANSI__ - -#include <stdlib.h> /* for free() */ -#include <string.h> /* for memset() */ - -#include <sys/reent.h> /* for extern of _REENT (aka _impure_ptr) */ -#include <errno.h> - -/* - * NOTE: - * There is some problem with doing this on the hpux version - * of the UNIX simulator (symptom is printf core dumps), so - * we just don't for now. - * Not sure if this is a problem with hpux, newlib, or something else. - */ - -#if defined(RTEMS_UNIX) && !defined(hpux) -#define NEED_SETVBUF -#endif - -#include <stdio.h> - -int _fwalk(struct _reent *ptr, int (*function) (FILE *) ); - -extern struct _reent libc_global_reent __ATTRIBUTE_IMPURE_PTR__; - -/* - * reent struct allocation moved here from libc_start_hook() to avoid - * mutual exclusion problems when memory is allocated from the start hook. - * - * Memory is also now allocated from the workspace rather than the heap. - * -- ptorre 9/30/03 - */ -bool libc_create_hook( - rtems_tcb *current_task, - rtems_tcb *creating_task -) -{ - struct _reent *ptr; - - /* NOTE: The RTEMS malloc is reentrant without a reent ptr since - * it is based on the Classic API Region Manager. - */ - - #define REENT_MALLOCED 0 - #if REENT_MALLOCED - ptr = (struct _reent *) calloc(1, sizeof(struct _reent)); - #else - /* It is OK to allocate from the workspace because these - * hooks run with thread dispatching disabled. - */ - ptr = (struct _reent *) _Workspace_Allocate(sizeof(struct _reent)); - #endif - - if (ptr) { - - _REENT_INIT_PTR((ptr)); /* GCC extension: structure constants */ - creating_task->libc_reent = ptr; - return true; - } - else - return false; -} - -/* - * Called for all user TASKS (system tasks are MPCI Receive Server and IDLE) - */ - -#ifdef NEED_SETVBUF -rtems_extension libc_begin_hook(rtems_tcb *current_task) -{ - setvbuf( stdout, NULL, _IOLBF, BUFSIZ ); -} -#endif - -/* - * Called when a task is deleted. - * Must restore the new lib reentrancy state for the new current - * task. - * - */ - -int newlib_free_buffers( - FILE *fp -) -{ - switch ( fileno(fp) ) { - case 0: - case 1: - case 2: - if (fp->_flags & __SMBF) { - free( fp->_bf._base ); - fp->_flags &= ~__SMBF; - fp->_bf._base = fp->_p = (unsigned char *) NULL; - } - break; - default: - fclose(fp); - } - return 0; -} - -rtems_extension libc_delete_hook( - rtems_tcb *current_task, - rtems_tcb *deleted_task -) -{ - struct _reent *ptr; - - /* - * The reentrancy structure was allocated by newlib using malloc() - */ - - if (current_task == deleted_task) { - ptr = _REENT; - } else { - ptr = deleted_task->libc_reent; - } - - if (ptr && ptr != &libc_global_reent) { -/* - _wrapup_reent(ptr); - _reclaim_reent(ptr); -*/ - /* - * Just in case there are some buffers lying around. - */ - _fwalk(ptr, newlib_free_buffers); -#if REENT_MALLOCED - free(ptr); -#else - _Workspace_Free(ptr); -#endif - } - - deleted_task->libc_reent = NULL; - - /* - * Require the switch back to another task to install its own - */ - - if ( current_task == deleted_task ) { - _REENT = 0; - } -} - -#endif |