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* Port of RTEMS to the Texas Instruments C3x/C4x DSP families includingJoel Sherrill2000-07-262-0/+17
| | | | | | | | | | | a BSP (c4xsim) supporting the simulator included with gdb. This port was done by Joel Sherrill and Jennifer Averett of OAR Corporation. Also included with this port is a space/time optimization to eliminate FP context switch management on CPUs without hardware or software FP. An issue with this port was that sizeof(unsigned32) = sizeof(unsigned8) on this CPU. This required addressing alignment checks and assumptions as well as fixing code that assumed sizeof(unsigned32) == 4.
* Merged from 4.5.0-beta3aJoel Sherrill2000-06-121-1/+1
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* Patch rtems-rc-4.5.0-13-cvs.diff from Ralf Corsepius <corsepiu@faw.uni-ulm.de>.Joel Sherrill2000-04-133-0/+6
| | | | adds .cvsignore.
* POSIX message queues now include complete functionality includingJoel Sherrill2000-01-131-4/+6
| | | | | | | | | | | | | | | | blocking sends when the queue is full. The SuperCore was enhanced to support blocking on send. The existing POSIX API was debugged and numerous test cases were added to psxmsgq01 by Jennifer Averett. SuperCore enhancements and resulting modifications to other APIs were done by Joel. There is one significant point of interpretation for the POSIX API. What happens to threads already blocked on a message queue when the mode of that same message queue is changed from blocking to non-blocking? We decided to unblock all waiting tasks with an EAGAIN error just as if a non-blocking version of the same operation had returned unsatisfied. This case is not discussed in the POSIX standard and other implementations may have chosen differently.
* Added support for simple binary semaphores in addition to the highJoel Sherrill2000-01-051-9/+0
| | | | | | | | | | | | power binary/mutex style semaphores already supported by RTEMS. This was done at the request of Eric Norum <eric@cls.usask.ca> in support of his effort to port EPICS to RTEMS. This change consisted of changing the nesting_allowed boolean into a lock_nesting_behavior enumerated value as well as allowing the core mutex object to optionally support ensuring that the holder of a binary semaphore released it. Finally, a more subtle enhancement was to allow the non-holder to release a priority inheritance/ceiling mutex and still allow the holding task to return to its original priority.
* Updated copyright notice.Joel Sherrill1999-11-1721-42/+21
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* Committed modifications from ITRON Task and Task Dependendent SynchronizationJoel Sherrill1999-11-101-9/+0
| | | | Working Group. Included are tests.
* Patch from Ralf Corsepius <corsepiu@faw.uni-ulm.de> to make fix bugJoel Sherrill1999-10-041-3/+3
| | | | where wrapup left pieces out of the librtemsall.a.
* Applied patch rtems-rc-19990820-6.diff.gz fromJoel Sherrill1999-09-071-0/+12
| | | | | Ralf Corsepius <corsepiu@faw.uni-ulm.de> which converted many Makefile.in's to Makefile.am's. This added a lot of files.
* Unlimited objects patch from Chris Johns <ccj@acm.org>. Email follows:Joel Sherrill1999-03-172-10/+36
| | | | | | | | | | | | | | | | | | | | | | | | | First, the unlimited patch. I have compiled the unlmited patch for the Linux posix BSP only and it seems to work cleanly. I would like a really major application run on this change before commiting as the changes are very core and significant. I am currently building all the tests to run. I have no targets suitable to test on at the moment. I have tested the patch for inline functions and macros. Turning macros on has found some core bugs. I have fixed these but have not run all the tests. Please review the patch for these changes. They are: 1) The conditional compilation for MP support broke the core messages code. You cannot embed a conditional macro in another macro. The Send and Urgent Send calls are macros. 2) User extensions handler initialisation now has two parameters. I have updated the macros to support the extra parameter. The patch also contains the gcc-target-default.cfg fix required to build the kernel. More of a by product than a fix for you.
* Modified _Objects_Is_class_valid() to correctly report that 0 wasJoel Sherrill1998-06-181-1/+1
| | | | | not a valid object class. This was discovered while looking for a bug reported by Jennifer.
* updated copyright to 1998Joel Sherrill1998-02-1721-21/+21
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* Removed warning per Chris Johns' suggestion.Joel Sherrill1998-01-201-1/+1
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* Fixed typo in the pointer to the license terms.Joel Sherrill1997-10-0821-42/+42
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* headers updated to reflect new style copyright notice as partJoel Sherrill1997-04-2221-105/+105
| | | | of switching to the modified GNU GPL.
* modified _Chain_Insert_unprotected to have the form required to be usedJoel Sherrill1997-03-111-2/+2
| | | | as the sole statement in an if or else statement
* changed _TOD_Is_set from a function to a boolean variableJoel Sherrill1996-09-061-9/+0
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* removed Thread_queue_Get_number_waitingMark Johannes1996-08-131-9/+0
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* renamed _TOD_Ticks_since_boot as _Watchdog_Ticks_since_boot so the WatchdogJoel Sherrill1996-05-311-1/+1
| | | | | Handler could timestamp the starting and stopping of timers. Since TOD is built on top of Watchdog, this avoided a circular dependency.
* made initialization routine a regular subroutineJoel Sherrill1996-04-221-41/+0
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* Removed prototyes for static inline routines and moved the comments intoJoel Sherrill1996-03-061-2/+2
| | | | | | | | | | | | | | | the inline implementation. The impetus for this was twofold. First, it is incorrect to have static inline prototypes when using the macro implementation. Second, this reduced the number of lines in the include files seen by rtems.h by about 2000 lines. Next we restricted visibility for the inline routines to inside the executive itself EXCEPT for a handful of objects. This reduced the number of include files included by rtems.h by 40 files and reduced the lines in the include files seen by rtems.h by about 6000 lines. In total, these reduced the compile time of the entire RTEMS tree by 20%. This results in about 8 minutes savings on the SparcStation 10 morgana.
* Removed the internal thread objects and dispersed its contents toJoel Sherrill1996-02-211-0/+16
| | | | | | | | | | the thread handler (IDLE), MPCI object (SYSI now MP Receive) and initialize_executive_early (IO initialization). The SYSI task no longer exists in a single processor configuration. This reduces single processor Workspace requirements by a TCB and a stack which is often larger than the minimum stack size. Moving the IO initialization plus accompanying BSP hooks eliminated an initialization ordering problem in which a global task could be created before the MPCI was initialized.
* changed post task extension from user set to api set and added flagJoel Sherrill1996-02-131-9/+0
| | | | in each thread which must be set when the post switch extension is to be run.
* new isr synchronization algorithm using a single enumerated set of states.Joel Sherrill1996-02-091-1/+0
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* alignment on workspace changed from CPU_ALIGNMENT to CPU_HEAP_ALIGNMENTJoel Sherrill1996-02-081-1/+1
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* changes remerged after lost in disk crash -- recovered from snapshot, ↵Joel Sherrill1995-12-203-15/+23
| | | | partially recovered working tree, etc
* SPARC port passes all testsJoel Sherrill1995-10-302-6/+28
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* all targets compile .. tony's patches in placeJoel Sherrill1995-09-291-2/+2
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* Fixed typoJoel Sherrill1995-09-271-2/+2
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* posix support initially addedJoel Sherrill1995-09-265-3/+34
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* Modifications from Tony Bennett accepted to return aligned block.Joel Sherrill1995-09-191-0/+12
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* Minor bug fixes to get all targets compilable and running. TheJoel Sherrill1995-09-191-0/+121
| | | | | | single biggest changes were the expansion of the workspace size macro to include other types of objects and the increase in the minimum stack size for most CPUs.
* The word "RTEMS" almost completely removed from the core.Joel Sherrill1995-09-1114-117/+199
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Configuration Table Template file added and all tests modified to use this. All gvar.h and conftbl.h files removed from test directories. Configuration parameter maximum_devices added. Core semaphore and mutex handlers added and RTEMS API Semaphore Manager updated to reflect this. Initialization sequence changed to invoke API specific initialization routines. Initialization tasks table now owned by RTEMS Tasks Manager. Added user extension for post-switch. Utilized user extensions to implement API specific functionality like signal dispatching. Added extensions to the System Initialization Thread so that an API can register a function to be invoked while the system is being initialized. These are largely equivalent to the pre-driver and post-driver hooks. Added the Modules file oar-go32_p5, modified oar-go32, and modified the file make/custom/go32.cfg to look at an environment varable which determines what CPU model is being used. All BSPs updated to reflect named devices and clock driver's IOCTL used by the Shared Memory Driver. Also merged clock isr into main file and removed ckisr.c where possible. Updated spsize to reflect new and moved variables. Makefiles for the executive source and include files updated to show break down of files into Core, RTEMS API, and Neither. Header and inline files installed into subdirectory based on whether logically in the Core or a part of the RTEMS API.
* Added unused priority ceiling parameter to rtems_semaphore_create.Joel Sherrill1995-08-282-1/+10
| | | | | | | | | | | | | | | Rearranged code to created thread handler routines to initialize, start, restart, and "close/delete" a thread. Made internal threads their own object class. This now uses the thread support routines for starting and initializing a thread. Insured deleted tasks are freed to the Inactive pool associated with the correct Information block. Added an RTEMS API specific data area to the thread control block. Beginnings of removing the word "rtems" from the core.
* Support for variable length names added to Object Handler. This supportsJoel Sherrill1995-08-231-26/+7
| | | | | | both fixed length "raw" names and strings from the API's point of view. Both inline and macro implementations were tested.
* Merged PowerPC port as submitted by Andy Bray of I-CUBED, LtdJoel Sherrill1995-08-226-6/+6
| | | | | | | | | | (andy@i-cubed.demon.co.uk). This initial submission is known to work on the IBM 403. It is thought to work on the Motorola 601, 603, and 604 although this remains to be tested. Another user -- Doug Currie (e@flavors.com) -- is interested in this work and will be testing it on the 604 using the Metrowerks C compiler and a different format assembly language.
* + Added object type field to object id.Joel Sherrill1995-08-181-4/+17
| | | | | | | | + Added name pointer to Object_Control. + Modified Object Open and Close to address name field. + Removed name as separate element from Thread and Proxy Control.
* bug fixes to make macro implementations workJoel Sherrill1995-08-166-34/+11
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* Fully tested on all in-house targetsJoel Sherrill1995-05-241-27/+0
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* Initial revisionJoel Sherrill1995-05-1120-0/+2048
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