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Rewrote em_load_driver in assembler fixing a possible memory leak.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@5793 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
2012-07-22 11:36:09 +00:00
parent 1f9f96d9b7
commit e7ed3b374f
6 changed files with 25 additions and 97 deletions
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3
libsrc/em/Makefile
View File

@@ -29,12 +29,13 @@ CFLAGS = -Osir -g -T -t $(SYS) --forget-inc-paths -I . -I ../../include
#--------------------------------------------------------------------------
# Object files
C_OBJS = em_load.o
C_OBJS =
S_OBJS = em-kernel.o \
em_commit.o \
em_copyto.o \
em_copyfrom.o \
em_load.o \
em_map.o \
em_pagecount.o \
em_unload.o \

1
libsrc/em/em-kernel.s
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@@ -4,7 +4,6 @@
; Common functions of the extended memory API.
;
.export em_clear_ptr
.import return0
.importzp ptr1

82
libsrc/em/em_load.c
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@@ -1,82 +0,0 @@
/*****************************************************************************/
/* */
/* em_load.c */
/* */
/* Loader module for EM drivers */
/* */
/* */
/* */
/* (C) 2002-2003 Ullrich von Bassewitz */
/* R<>merstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <modload.h>
#include <em.h>
#include <em/em-kernel.h>
unsigned char __fastcall__ em_load_driver (const char* name)
/* Load an extended memory driver and return an error code */
{
static struct mod_ctrl ctrl = {
read /* Read from disk */
};
unsigned char Res;
/* Check if we do already have a driver loaded. If so, remove it. */
if (em_drv != 0) {
em_uninstall ();
}
/* Now open the file */
ctrl.callerdata = open (name, O_RDONLY);
if (ctrl.callerdata >= 0) {
/* Load the module */
Res = mod_load (&ctrl);
/* Close the input file */
close (ctrl.callerdata);
/* Check the return code */
if (Res == MLOAD_OK) {
/* Check the driver signature, install the driver */
return em_install (ctrl.module);
}
}
/* Error loading the driver */
return EM_ERR_CANNOT_LOAD;
}