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efi_loader: describe returning of control

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Provide a sober description of how control can be returned by a UEFI
binary.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2020-01-10 22:06:54 +01:00
parent d417b94e57
commit 55111c5052
1 changed files with 4 additions and 4 deletions
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8
lib/efi_loader/efi_boottime.c
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@ -2933,10 +2933,10 @@ efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
ret = EFI_CALL(image_obj->entry(image_handle, &systab));
/*
* Usually UEFI applications call Exit() instead of returning.
* But because the world doesn't consist of ponies and unicorns,
* we're happy to emulate that behavior on behalf of a payload
* that forgot.
* Control is returned from a started UEFI image either by calling
* Exit() (where exit data can be provided) or by simply returning from
* the entry point. In the latter case call Exit() on behalf of the
* image.
*/
return EFI_CALL(systab.boottime->exit(image_handle, ret, 0, NULL));
}