FreeCalypso > hg > fc-tourmaline
view src/cs/os/nucleus/cs_defs.h @ 268:f2e52cab0a73
abb_inth.c: check all interrupt causes, not just one
The original code used if - else if - else if etc constructs, thus
the first detected interrupt was the only one handled. However,
Iota ITSTATREG is a clear-on-read register, thus if we only handle
the first detected interrupt and skip checking the others, then the
other interrupts will be lost, if more than one interrupt happened
to occur in one ABB interrupt handling cycle - a form of rare race
condition. Change the code to check all interrupts that were read
in this cycle.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 13 Jun 2021 18:17:53 +0000 |
| parents | 4e78acac3d88 |
| children |
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/*************************************************************************/ /* */ /* Copyright (c) 1993-1994 Accelerated Technology, Inc. */ /* */ /* PROPRIETARY RIGHTS of Accelerated Technology are involved in the */ /* subject matter of this material. All manufacturing, reproduction, */ /* use, and sales rights pertaining to this subject matter are governed */ /* by the license agreement. The recipient of this software implicitly */ /* accepts the terms of the license. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* cs_defs.h PLUS 1.1 */ /* */ /* COMPONENT */ /* */ /* CS - Common Services */ /* */ /* DESCRIPTION */ /* */ /* This file contains data structure definitions used in the common */ /* service linked list routines. */ /* */ /* AUTHOR */ /* */ /* William E. Lamie, Accelerated Technology, Inc. */ /* */ /* DATA STRUCTURES */ /* */ /* CS_NODE Link node structure */ /* */ /* FUNCTIONS */ /* */ /* None */ /* */ /* DEPENDENCIES */ /* */ /* nucleus.h Nucleus PLUS constants */ /* */ /* HISTORY */ /* */ /* NAME DATE REMARKS */ /* */ /* W. Lamie 03-01-1993 Created initial version 1.0 */ /* D. Lamie 04-19-1993 Verified version 1.0 */ /* W. Lamie 06-01-1993 Added padding conditional into */ /* CS_NODE structure, making */ /* version 1.0a */ /* D. Lamie 06-01-1993 Verified version 1.0a */ /* W. Lamie 03-01-1994 Moved include files outside of */ /* the file #ifndef to allow the */ /* use of actual data structures, */ /* resulting in version 1.1 */ /* R. Pfaff - */ /* D. Lamie 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ #include "nucleus.h" /* Include Nucleus constants */ /* Check to see if the file has been included already. */ #ifndef CS_DEFS #define CS_DEFS /* Define a common node data structure that can be included inside of other system data structures. */ typedef struct CS_NODE_STRUCT { struct CS_NODE_STRUCT *cs_previous; struct CS_NODE_STRUCT *cs_next; DATA_ELEMENT cs_priority; #if PAD_1 DATA_ELEMENT cs_padding[PAD_1]; #endif } CS_NODE; #endif
