Second try: Introduce plugin_crt0.c that every plugin links.

It handles exit() properly, calling the handler also when the plugin returns
normally (also make exit() more standard compliant while at it).
It also holds PLUGIN_HEADER, so that it doesn't need to be in each plugin anymore.

To work better together with callbacks passed to rb->default_event_handler_ex() introduce exit_on_usb() which will call the exit handler before showing the usb screen and exit() after it.
In most cases rb->default_event_handler_ex() was passed a callback which was manually called at all other return points. This can now be done via atexit().

In future plugin_crt0.c could also handle clearing bss, initializing iram and more.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27873 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2010-08-24 14:30:46 +00:00
parent 3478bc5d6d
commit cae4ae2c71
142 changed files with 372 additions and 341 deletions

View file

@ -45,7 +45,7 @@ To do:
- The Irish currency needs 6 digits after the . to have sufficient precision on big number
*/
PLUGIN_HEADER
/* Name and path of the config file*/
static const char cfg_filename[] = "euroconverter.cfg";
@ -387,10 +387,8 @@ static int euro_menu(void)
/* Call when the program end */
static void euro_exit(void *parameter)
static void euro_exit(void)
{
(void)parameter;
//Restore the old pattern (i don't find another way to do this. An idea?)
rb->lcd_unlock_pattern(heuro);
rb->lcd_unlock_pattern(hhome);
@ -411,6 +409,7 @@ enum plugin_status plugin_start(const void* parameter)
/* if you don't use the parameter, you can do like
this to avoid the compiler warning about it */
(void)parameter;
atexit(euro_exit);
/*Get the pattern handle*/
heuro=rb->lcd_get_locked_pattern();
@ -587,9 +586,7 @@ enum plugin_status plugin_start(const void* parameter)
break;
default:
if (rb->default_event_handler_ex(button, euro_exit, NULL)
== SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
exit_on_usb(button);
break;
}
/*Display*/
@ -599,7 +596,6 @@ enum plugin_status plugin_start(const void* parameter)
e=mydiv(h,currency[country]);
display(e,h,pos);
}
euro_exit(NULL);
return PLUGIN_OK;
}