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* score: _CPU_Context_switch_to_first_task_smp()Sebastian Huber2014-02-051-14/+0
| | | | | Delete _CPU_Context_switch_to_first_task_smp() and use _CPU_Context_restore() instead.
* Add thread-local storage (TLS) supportSebastian Huber2014-02-042-2/+12
| | | | | Tested and implemented on ARM, m68k, PowerPC and SPARC. Other architectures need more work.
* score: Simplify <rtems/score/cpuatomic.h>WeiY2013-08-281-30/+6
| | | | Add proper license and copyright.
* sparc: Make _CPU_ISR_Dispatch_disable per-CPUSebastian Huber2013-08-092-17/+21
| | | | This variable must be available for each processor in the system.
* sparc: Move _CPU_Context_switch(), etc.Sebastian Huber2013-08-091-224/+0
| | | | | | Move the _CPU_Context_switch(), _CPU_Context_restore() and _CPU_Context_switch_to_first_task_smp() code since the method to obtain the processor index is BSP specific.
* score/cpu: Add CPU_Per_CPU_controlSebastian Huber2013-08-091-0/+7
| | | | Add CPU port specific per-CPU control.
* score/cpu: Fix _CPU_SMP_lock_Acquire()Sebastian Huber2013-07-301-1/+1
| | | | Avoid infinite loops due to compiler optimization.
* score: PR1782: CPU_USE_DEFERRED_FP_SWITCHSebastian Huber2013-07-231-1/+5
| | | | Do not redefine CPU_USE_DEFERRED_FP_SWITCH.
* smp: Rename _CPU_Processor_event_receive()Sebastian Huber2013-07-171-1/+1
| | | | Rename to _CPU_SMP_Processor_event_receive().
* smp: Rename _CPU_Processor_event_broadcast()Sebastian Huber2013-07-171-1/+1
| | | | Rename to _CPU_SMP_Processor_event_broadcast().
* smp: Add and use _CPU_SMP_Send_interrupt()Sebastian Huber2013-07-171-0/+2
| | | | Delete bsp_smp_interrupt_cpu().
* smp: Add and use _CPU_SMP_Get_current_processor()Sebastian Huber2013-07-171-0/+2
| | | | | | | | | | Add and use _SMP_Get_current_processor() and rtems_smp_get_current_processor(). Delete bsp_smp_interrupt_cpu(). Change type of current processor index from int to uint32_t to match _SMP_Processor_count type.
* update-all-architectures-to-new-atomic-implementationWeiY2013-07-171-6/+4
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* smp: New SMP lock APISebastian Huber2013-05-314-18/+110
| | | | | | | | | | | | | | Move the SMP lock implementation to the CPU port. An optimal SMP lock implementation is highly architecture dependent. For example the memory models may be fundamentally different. The new SMP lock API has a flaw. It does not provide the ability to use a local context for acquire and release pairs. Such a context is necessary to implement for example the Mellor-Crummey and Scott (MCS) locks. The SMP lock is currently used in _Thread_Disable_dispatch() and _Thread_Enable_dispatch() and makes them to a giant lock acquire and release. Since these functions do not pass state information via a local context there is currently no use case for such a feature.
* smp: Simplify SMP initialization sequenceSebastian Huber2013-05-291-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete bsp_smp_wait_for(). Other parts of the system work without timeout, e.g. the spinlocks. Using a timeout here does not make the system more robust. Delete bsp_smp_cpu_state and replace it with Per_CPU_State. The Per_CPU_State follows the Score naming conventions. Add _Per_CPU_Change_state() and _Per_CPU_Wait_for_state() functions to change and observe states. Use Per_CPU_State in Per_CPU_Control instead of the anonymous integer. Add _CPU_Processor_event_broadcast() and _CPU_Processor_event_receive() functions provided by the CPU port. Use these functions in _Per_CPU_Change_state() and _Per_CPU_Wait_for_state(). Add prototype for _SMP_Send_message(). Delete RTEMS_BSP_SMP_FIRST_TASK message. The first context switch is now performed in rtems_smp_secondary_cpu_initialize(). Issuing the first context switch in the context of the inter-processor interrupt is not possible on systems with a modern interrupt controller. Such an interrupt controler usually requires a handshake protocol with interrupt acknowledge and end of interrupt signals. A direct context switch in an interrupt handler circumvents the interrupt processing epilogue and may leave the system in an inconsistent state. Release lock in rtems_smp_process_interrupt() even if no message was delivered. This prevents deadlock of the system. Simplify and format _SMP_Send_message(), _SMP_Request_other_cores_to_perform_first_context_switch(), _SMP_Request_other_cores_to_dispatch() and _SMP_Request_other_cores_to_shutdown().
* score: Add CPU context validationSebastian Huber2013-05-101-0/+12
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* Revert bootstrap whitespace changes.Chris Johns2013-05-101-0/+1
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* sparc: Fix problem with assembler filesSebastian Huber2013-05-071-1/+1
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* sparc.h: Included stdint.hMohammed Khoory2013-05-061-0/+2
| | | | | | This header uses uint32_t but does not include stdint.h This may cause problems when compiling applications that include BSP headers that include this file (leon.h for example)
* Using the generic atomic ops to implement UP mode atomic for all ↵WeiY2013-05-013-0/+44
| | | | architectures. SMP atomic port will be later.
* sparc/cpu.h: Add commentsJoel Sherrill2013-03-181-0/+3
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* RTEMS: Delete ChangeLog files.Gedare Bloom2013-03-081-531/+0
| | | | | | | | | This commit deletes all RTEMS ChangeLog files. These files have been abandoned since converting to git version control. The historical data may be recovered by checking out any commit before this one. Most of the contents of these ChangeLog files can also be found in the git log. Two external ChangeLog files, ChangeLog.slac and ChangeLog.zlib, remain.
* cpukit: Use Consistent Beginning of Doxygen Group NotationJoel Sherrill2013-01-101-2/+1
| | | | | This is the result of a sed script which converts all uses of @{ into a consistent form.
* score: Doxygen Clean Up Task #4Alex Ivanov2013-01-084-387/+397
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* Miscellaneous Doxygen clean-upJoel Sherrill2012-12-281-0/+2
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* score misc: Score misc: Clean up Doxygen #9 (GCI 2012)Alex Ivanov2012-11-301-44/+6
| | | | | | | This patch is a task from GCI 2012 which improves the Doxygen comments in the RTEMS source. https://google-melange.appspot.com/gci/task/view/google/gci2012/7977211
* sparc cpu.h: Correct spacingJoel Sherrill2012-11-301-1/+1
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* score: Add CPU_Exception_frameSebastian Huber2012-11-271-0/+14
| | | | | | | | | | | | | | | | | | | | | Add CPU port type CPU_Exception_frame and function _CPU_Exception_frame_print(). The CPU ports of avr, bfin, h8300, lm32, m32c, m32r, m68k, nios2, sh, sparc64, and v850 use an empty default implementation of _CPU_Exception_frame_print(). Add rtems_exception_frame and rtems_exception_frame_print(). Add RTEMS_FATAL_SOURCE_EXCEPTION for CPU exceptions. Use rtems_fatal() with source RTEMS_FATAL_SOURCE_EXCEPTION in CPU ports of i386, powerpc, and sparc for unexpected exceptions. Add third parameter to RTEMS_BSP_CLEANUP_OPTIONS() which controls the BSP_PRINT_EXCEPTION_CONTEXT define used in the default bsp_fatal_extension(). Add test sptests/spfatal26.
* score: PR1607: Add and use CPU_SIZEOF_POINTERSebastian Huber2012-11-221-0/+2
| | | | | | | | | | | | | | | | | Add and use new CPU port define CPU_SIZEOF_POINTER. It must be an integer literal that can be used by the assembler. This value will be used to calculate offsets of structure members. These offsets will be used in assembler code. The size of a pointer is part of the application binary interface (ABI) and thus independent of the actual programming language. The compiler will provide defines to determine the current ABI. We use these defines to select the appropriate CPU_SIZEOF_POINTER value. Static assertions in the new file "cpukit/score/src/percpuasm.c" will ensure that the value of CPU_SIZEOF_POINTER is consistent with the current compiler settings. Also the offset values used by assembler code are verfied.
* Remove All CVS Id Strings Possible Using a ScriptJoel Sherrill2012-05-118-20/+0
| | | | | | | | | | | | Script does what is expected and tries to do it as smartly as possible. + remove occurrences of two blank comment lines next to each other after Id string line removed. + remove entire comment blocks which only exited to contain CVS Ids + If the processing left a blank line at the top of a file, it was removed.
* Revert: Remove CVS IdsJoel Sherrill2012-05-071-0/+4
| | | | | See http://www.rtems.org/pipermail/rtems-devel/2012-May/001006.html for details.
* Remove CVS-Ids.Ralf Corsépius2012-05-041-4/+0
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* Remove all .cvsignore files.Joel Sherrill2012-02-011-2/+0
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* 2011-10-07 Daniel Hellstrom <daniel@gaisler.com>Joel Sherrill2011-10-072-11/+23
| | | | | | | | | | | | | PR 1932/cpukit * cpu_asm.S: At some point the interrupt trap handler causes a window-overflow and the window overflow trap handler crashes when writing to 0. I found that this is because the WIM was bad, to the window overflow handler uses a uninitialized stack pointer in a window never used. * g3=CWP, not WIM * CWP is incremented by done_flushing no need doing that here also * I see no reason to create an additional stack frame (save) * Must turn off traps when updating WIM (maybe already done by caller?)
* 2011-09-27 Sebastian Huber <sebastian.huber@embedded-brains.de>Sebastian Huber2011-09-272-0/+7
| | | | | PR 1914/cpukit * rtems/score/cpu.h: Select timestamp implementation.
* 2011-07-24 Joel Sherrill <joel.sherrill@oarcorp.com>Joel Sherrill2011-07-242-10/+10
| | | | | * cpu.c: Remove /*PAGE markers which were interpreted by a long dead print script.
* 2011-06-21 Joel Sherrill <joel.sherrill@oarcorp.com>Joel Sherrill2011-06-214-332/+666
| | | | | * rtems/score/cpu.h, rtems/score/sparc.h, rtems/score/types.h: Convert comments to Doxygen style and improve.
* 2011-05-17 Ralf Corsépius <ralf.corsepius@rtems.org>Ralf Corsepius2011-05-172-2/+7
| | | | * Makefile.am: Reformat.
* 2011-04-18 Joel Sherrill <joel.sherrilL@OARcorp.com>Joel Sherrill2011-04-182-3/+5
| | | | * rtems/score/sparc.h: Remove warnings.
* 2011-03-16 Jennifer Averett <jennifer.averett@OARcorp.com>Joel Sherrill2011-03-162-524/+52
| | | | | | | | | | | | | | | | | | | | | | PR 1729/cpukit * configure.ac, sapi/include/confdefs.h, sapi/src/exinit.c, score/Makefile.am, score/preinstall.am, score/cpu/i386/rtems/score/cpu.h, score/cpu/sparc/cpu_asm.S, score/cpu/sparc/rtems/score/cpu.h, score/include/rtems/score/basedefs.h, score/include/rtems/score/context.h, score/include/rtems/score/percpu.h, score/src/percpu.c, score/src/thread.c, score/src/threadcreateidle.c: Add next step in SMP support. This adds an allocated array of the Per_CPU structures to support multiple cpus vs a single instance of the structure which is still used if SMP support is disabled. Configuration support is also added to explicitly enable or disable SMP. But SMP can only be enabled for the CPUs which will support it initially -- SPARC and i386. With the stub BSP support, a BSP can be run as a single core SMP system from an RTEMS data structure standpoint. * aclocal/check-smp.m4, aclocal/enable-smp.m4, score/include/rtems/bspsmp.h, score/include/rtems/score/smplock.h, score/src/smp.c, score/src/smplock.c: New files.
* 2011-02-11 Ralf Corsépius <ralf.corsepius@rtems.org>Ralf Corsepius2011-02-113-11/+16
| | | | | * rtems/score/cpu.h, rtems/score/sparc.h: Use "__asm__" instead of "asm" for improved c99-compliance.
* 2010-11-16 Joel Sherrill <joel.sherrill@oarcorp.com>Joel Sherrill2010-11-162-3/+4
| | | | * cpu.c: Remove unused variable reported by clang.
* 2010-10-21 Joel Sherrill <joel.sherrill@oarcorp.com>Joel Sherrill2010-10-212-1/+7
| | | | | | * rtems/score/cpu.h: Add RTEMS_COMPILER_NO_RETURN_ATTRIBUTE to _CPU_Context_restore() because it does not return. Telling GCC this avoids generation of dead code.
* 2010-07-29 Gedare Bloom <giddyup44@yahoo.com>Joel Sherrill2010-07-292-1/+12
| | | | | | | | | | | PR 1635/cpukit * rtems/score/types.h: Refactoring of priority handling, to isolate the bitmap implementation of priorities in the supercore so that priority management is a little more modular. This change is in anticipation of scheduler implementations that can select how they manage tracking priority levels / finding the highest priority ready task. Note that most of the changes here are simple renaming, to clarify the use of the bitmap-based priority management.
* 2010-07-16 Sebastian Huber <sebastian.huber@embedded-brains.de>Sebastian Huber2010-07-163-12/+8
| | | | | * rtems/score/cpu.h: Include <rtems/score/types.h> first. * rtems/score/types.h: Use <rtems/score/basedefs.h> header file.
* 2010-06-28 Joel Sherrill <joel.sherrill@oarcorp.com>Joel Sherrill2010-06-293-64/+30
| | | | | | | | PR 1573/cpukit * cpu_asm.S, rtems/score/cpu.h: Add a per cpu data structure which contains the information required by RTEMS for each CPU core. This encapsulates information such as thread executing, heir, idle and dispatch needed.
* 2010-03-27 Joel Sherrill <joel.sherrill@oarcorp.com>Joel Sherrill2010-03-273-0/+12
| | | | * cpu.c, cpu_asm.S: Add include of config.h
* Whitespace removal.Ralf Corsepius2009-12-026-83/+83
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* 2009-03-12 Joel Sherrill <joel.sherrill@OARcorp.com>Joel Sherrill2009-03-122-4/+12
| | | | | | | | PR 1385/cpukit * cpu_asm.S: When the type rtems_boolean was switched to the C99 bool, the size changed from 4 bytes to 1 byte. The interrupt dispatching code accesses two boolean variables for scheduling purposes and the assembly implementations of this code did not get updated.
* 2009-02-12 Joel Sherrill <joel.sherrill@oarcorp.com>Joel Sherrill2009-02-122-2/+7
| | | | | * rtems/score/cpu.h: Change prototype of IDLE thread to consistently return void * and take a uintptr_t argument.
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