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

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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
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9
apps/plugins/greyscale.c
View file

@ -27,7 +27,7 @@
#if defined(HAVE_LCD_BITMAP) && (LCD_DEPTH < 4)
#include "lib/grey.h"
PLUGIN_HEADER
/* variable button definitions */
#if CONFIG_KEYPAD == RECORDER_PAD
@ -316,9 +316,7 @@ int main(void)
button = rb->button_get(true);
if (rb->default_event_handler_ex(button, cleanup, NULL)
== SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
exit_on_usb(button);
if (button & GREYSCALE_SHIFT)
{
@ -369,8 +367,6 @@ int main(void)
case GREYSCALE_RC_OFF:
#endif
case GREYSCALE_OFF:
cleanup(NULL);
return PLUGIN_OK;
}
}
@ -382,6 +378,7 @@ enum plugin_status plugin_start(const void* parameter)
{
(void)parameter;
atexit(cleanup);
return main();
}