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* posix: Fix fall back spinlock implementationSebastian Huber2016-12-022-10/+7
| | | | Update #2674.
* libdebugger: Build for ARM's without a CP15.Chris Johns2016-12-021-40/+114
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* cpukit: Add libdebugger, a remote debugger agent for GDB.Chris Johns2016-11-2922-0/+6337
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* sparc: Optimize _ISR_Handler()Sebastian Huber2016-11-281-0/+3
| | | | | | Use _Thread_Do_dispatch() instead of _Thread_Dispatch(). Restore the PSR[EF] state of the interrupted context via new system call syscall_irqdis_fp in case floating-point support is enabled.
* score: Fix thread queue context initializationSebastian Huber2016-11-289-9/+17
| | | | | Initialize the thread queue context with invalid data in debug configurations to catch missing set up steps.
* libblock: Fix for RTEMS_DEBUGSebastian Huber2016-11-241-0/+2
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* arm: Fix _CPU_ISR_Is_enabled() for ARMv7-MSebastian Huber2016-11-241-1/+1
| | | | Update #2811.
* score: Optimize _Thread_queue_Enqueue()Sebastian Huber2016-11-2420-28/+117
| | | | | | | | | Move thread state for _Thread_queue_Enqueue() to the thread queue context. This reduces the parameter count of _Thread_queue_Enqueue() from five to four (ARM for example has only four function parameter registers). Since the thread state is used after several function calls inside _Thread_queue_Enqueue() this parameter was saved on the stack previously.
* score: Fix interrupt profilingSebastian Huber2016-11-242-5/+20
| | | | | | | | | | Callers of _Thread_Do_dispatch() must have a valid Per_CPU_Control::Stats::thread_dispatch_disabled_instant. Call _Profiling_Outer_most_interrupt_entry_and_exit() with the interrupt stack to not exceed Per_CPU_Control::Interrupt_frame. Update #2751.
* posix: Fix typoSebastian Huber2016-11-231-1/+1
| | | | Update #2674.
* score: Explicitly define the fatal source numbersSebastian Huber2016-11-231-11/+11
| | | | Update #2825.
* score: Uncomment unused internal error codesSebastian Huber2016-11-232-36/+40
| | | | Update #2825.
* posix: Add self-contained pthread spinlockSebastian Huber2016-11-2324-723/+173
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Turn pthread_spinlock_t into a self-contained object. On uni-processor configurations, interrupts are disabled in the lock/trylock operations and the previous interrupt status is restored in the corresponding unlock operations. On SMP configurations, a ticket lock is a acquired and released in addition. The self-contained pthread_spinlock_t object is defined by Newlib in <sys/_pthreadtypes.h>. typedef struct { struct _Ticket_lock_Control _lock; __uint32_t _interrupt_state; } pthread_spinlock_t; This implementation is simple and efficient. However, this test case of the Linux Test Project would fail due to call of printf() and sleep() during spin lock ownership: https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/pthread_spin_lock/1-2.c There is only limited support for profiling on SMP configurations. Delete CORE spinlock implementation. Update #2674.
* score: Add RTEMS_ALIAS()Sebastian Huber2016-11-231-0/+10
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* score: Rename _Thread_queue_Enqueue_critical()Sebastian Huber2016-11-2321-69/+31
| | | | | Delete unused _Thread_queue_Enqueue() and rename _Thread_queue_Enqueue_critical() to _Thread_queue_Enqueue().
* score: Add thread queue enqueue calloutSebastian Huber2016-11-2327-225/+350
| | | | | | | Replace the expected thread dispatch disable level with a thread queue enqueue callout. This enables the use of _Thread_Dispatch_direct() in the thread queue enqueue procedure. This avoids impossible exection paths, e.g. Per_CPU_Control::dispatch_necessary is always true.
* score: Robust thread dispatchSebastian Huber2016-11-2321-3/+84
| | | | | | | | | | | | On SMP configurations, it is a fatal error to call blocking operating system with interrupts disabled, since this prevents delivery of inter-processor interrupts. This could lead to executing threads which are not allowed to execute resulting in undefined behaviour. The ARM Cortex-M port has a similar problem, since the interrupt state is not a part of the thread context. Update #2811.
* score: Delete obsolete scheduler debug aidSebastian Huber2016-11-234-67/+0
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* arm: Fix _ARMV4_Exception_interruptSebastian Huber2016-11-231-1/+1
| | | | | | | Use the right register to determine if a thread dispatch is allowed and necessary. Update #2751.
* score: Force Per_CPU_Control::executing alignmentSebastian Huber2016-11-231-0/+7
| | | | | | | | This fixes the CPU ports with relaxed alignment restrictions, e.g. type alignment is less than the type size. Close #2822. Close #2823.
* arm: Fix Thumb-1 targetsSebastian Huber2016-11-212-10/+40
| | | | | | | We cannot use the MRS or MSR instructions in Thumb-1 mode. Stay in ARM mode for the Thumb-1 targets during interrupt low-level processing. Update #2751.
* score: Group Per_CPU_Control members by alignmentSebastian Huber2016-11-211-19/+19
| | | | Close #2820.
* sparc64: Fix _CPU_ISR_Is_enabled()Sebastian Huber2016-11-211-1/+1
| | | | Update #2820.
* nios2: Fix _CPU_ISR_Is_enabled()Sebastian Huber2016-11-211-4/+4
| | | | Close #2818.
* arm: Fix ARM_CONTEXT_CONTROL_ISR_DISPATCH_DISABLESebastian Huber2016-11-211-2/+4
| | | | Close #2816.
* bfin: ASM compatibility for <rtems/score/cpu.h>Sebastian Huber2016-11-211-2/+2
| | | | Close #2817.
* score: Optimize self-contained objectsSebastian Huber2016-11-184-41/+62
| | | | Avoid use of the stack for the hot paths.
* score: Constify _MRSP_Get_owner()Sebastian Huber2016-11-181-1/+3
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* score: Add _ISR_Is_enabled()Sebastian Huber2016-11-1819-2/+124
| | | | | | | In contrast to _ISR_Get_level() the _ISR_Is_enabled() function evaluates a level parameter and returns a boolean value. Update #2811.
* score: Restrict task interrupt level to 0 on SMPSebastian Huber2016-11-181-2/+8
| | | | Update #2811.
* powerpc: Use Per_CPU_Control::isr_dispatch_disableSebastian Huber2016-11-182-2/+5
| | | | Update #2751.
* arm: Use Per_CPU_Control::isr_dispatch_disableSebastian Huber2016-11-184-31/+94
| | | | Update #2751.
* arm: Simplify _ARMV4_Exception_interruptSebastian Huber2016-11-181-18/+22
| | | | | Move profiling code closer to bsp_interrupt_disable() to allow re-use of r9 later.
* arm: Use local labelsSebastian Huber2016-11-181-9/+9
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* sparc: Use Per_CPU_Control::isr_dispatch_disableSebastian Huber2016-11-182-22/+5
| | | | Update #2751.
* score: Allow interrupts during thread dispatchSebastian Huber2016-11-185-38/+21
| | | | | | | | | Use a processor-specific interrupt frame during context switches in case the executing thread is longer executes on the processor and the heir thread is about to start execution. During this period we must not use a thread stack for interrupt processing. Update #2809.
* score: Add Per_CPU_Control::Interrupt_frameSebastian Huber2016-11-183-9/+38
| | | | Update #2809.
* score: Add Per_CPU_Control::isr_dispatch_disableSebastian Huber2016-11-182-1/+19
| | | | Update #2751.
* arm: Provide CPU_Interrupt_frame for ARMv4Sebastian Huber2016-11-182-3/+55
| | | | Update #2809.
* powerpc: Add up to date CPU_Interrupt_frameSebastian Huber2016-11-182-6/+386
| | | | | | | Rename ppc_exc_min_frame to CPU_Interrupt_frame. Move it and the corresponding defines to <rtems/score/cpuimpl.h>. Update #2809.
* powerpc: Move legacy CPU_Interrupt_frameSebastian Huber2016-11-181-31/+0
| | | | | | | The only remaining user of CPU_Interrupt_frame on PowerPC is the mpc5xx support. Move it to here. Update #2809.
* sparc: Move CPU_Interrupt_frame related definesSebastian Huber2016-11-185-54/+58
| | | | | | Move CPU_Interrupt_frame related defines to <rtems/score/cpuimpl.h>. Update #2809.
* sparc: Rename CPU_Minimum_stack_frameSebastian Huber2016-11-184-26/+26
| | | | | | | | Rename SPARC-specific CPU_Minimum_stack_frame to SPARC_Minimum_stack_frame. Rename SPARC-specific CPU_MINIMUM_STACK_FRAME_SIZE to SPARC_MINIMUM_STACK_FRAME_SIZE. Update #2809.
* sparc64: Rename CPU_Minimum_stack_frameSebastian Huber2016-11-183-30/+30
| | | | | | | | Rename SPARC64-specific CPU_Minimum_stack_frame to SPARC64_Minimum_stack_frame. Rename SPARC64-specific CPU_MINIMUM_STACK_FRAME_SIZE to SPARC64_MINIMUM_STACK_FRAME_SIZE. Update #2809.
* rtems: Conditionally define rtems_interrupt_frameSebastian Huber2016-11-1816-16/+21
| | | | Update #2808.
* score: Move CPU_PER_CPU_CONTROL_SIZESebastian Huber2016-11-1834-94/+125
| | | | | Move CPU_PER_CPU_CONTROL_SIZE and the optional CPU_Per_CPU_control to <rtems/score/cpuimpl.h> to hide it from <rtems.h>.
* score: Add and use _Thread_Dispatch_direct()Sebastian Huber2016-11-188-12/+38
| | | | | | | | | | This function is useful for operations which synchronously block, e.g. self restart, self deletion, yield, sleep. It helps to detect if these operations are called in the wrong context. Since the thread dispatch necessary indicator is not used, this is more robust in some SMP situations. Update #2751.
* score: Remove obsolete definesSebastian Huber2016-11-1818-281/+0
| | | | The thread dispatch inline option is no longer used.
* posix: Simplify cleanup push/popSebastian Huber2016-11-181-10/+10
| | | | | The POSIX cleanup list must be proteced from asynchronous thread deletion. Here local interrupt disable is sufficient.
* arm: Use TPIDRPRW for current per-CPU controlSebastian Huber2016-11-184-9/+30
| | | | | | Use the previously unused TPIDRPRW register to get the per-CPU control of the current processor. This avoids instructions in GET_SELF_CPU_CONTROL which are not available in Thumb mode.
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