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* i386: Restore SMP functionalityKinsey Moore2024-02-142-0/+7
| | | | | | | When the switch to waf occurred, the SMP support in i386 was left out causing it to accumulate a minor amount of cruft. This enables SMP for the i386 BSPs that support it and updates them for the API drift that has occurred since the change.
* bsp/i386/pc686: Clean up warningsChris Johns2023-10-041-4/+4
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* score: Add _CPU_Get_TLS_thread_pointer()Sebastian Huber2023-09-151-0/+7
| | | | | | | | Add _CPU_Get_TLS_thread_pointer() to get the thread pointer which is used to get the address of thread-local storage objects associated with a thread. Update #4920.
* i386/include/rtems/score/cpuimpl.h: Address unused parameter warningJoel Sherrill2023-08-211-0/+4
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* score: Remove CPU port specific cpuatomic.hSebastian Huber2023-06-121-33/+0
| | | | | All CPU ports used the same <rtems/score/cpustdatomic.h> header file to provide the atomic operations. Remove the header file indirection.
* Update company nameSebastian Huber2023-05-201-1/+1
| | | | | The embedded brains GmbH & Co. KG is the legal successor of embedded brains GmbH.
* score: Add CPU_THREAD_LOCAL_STORAGE_VARIANTSebastian Huber2022-10-142-1/+3
| | | | Update #3835.
* Do not use RTEMS_INLINE_ROUTINESebastian Huber2022-09-193-8/+8
| | | | | | | Directly use "static inline" which is available in C99 and later. This brings the RTEMS implementation closer to standard C. Close #3935.
* score: Remove _CPU_Counter_difference()Sebastian Huber2022-09-091-8/+0
| | | | | | | All CPU ports used the same _CPU_Counter_difference() implementation. Remove this CPU port interface and mandate a monotonically increasing CPU counter. Close #3456.
* score: Add _CPU_Use_thread_local_storage()Sebastian Huber2022-07-041-0/+26
| | | | | | | | | | | | At some point during system initialization, the idle threads are created. Afterwards, the boot processor basically executes within the context of an idle thread with thread dispatching disabled. On some architectures, the thread-local storage area of the associated thread must be set in dedicated processor registers. Add the new CPU port function to do this: void _CPU_Use_thread_local_storage( const Context_Control *context ) Close #4672.
* score/cpu/i386: Change license to BSD-2Joel Sherrill2022-02-2810-30/+218
| | | | | | sse_test.c was deliberarely NOT changed. Updates #3053.
* score/cpu/i386: Clean up file headers in prep for license change.Joel Sherrill2022-02-233-6/+9
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* improve the format error reporting on i386Zacchaeus Leung2021-10-041-4/+4
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* build: Remove old build systemSebastian Huber2021-09-211-11/+0
| | | | | Close #3250. Close #4081.
* score: Canonicalize _CPU_Fatal_halt()Sebastian Huber2021-07-282-11/+2
| | | | | | | | Move _CPU_Fatal_halt() declaration to <rtems/score/cpuimpl.h> and make sure it is a proper declaration of a function which does not return. Fix the type of the error code. If necessary, add the implementation to cpu.c. Implementing _CPU_Fatal_halt() as a function makes it possible to wrap this function for example to fully test _Terminate().
* score: Remove processor event broadcast/receiveSebastian Huber2021-07-281-10/+0
| | | | | | Remove _CPU_SMP_Processor_event_broadcast() and _CPU_SMP_Processor_event_receive(). These functions are hard to use since they are subject to the lost wake up problem.
* rtems: Improve RTEMS_NO_RETURN attributeSebastian Huber2020-10-101-5/+2
| | | | | | | | | | | Provide RTEMS_NO_RETURN also in case RTEMS_DEBUG is defined to prevent errors like this: error: no return statement in function returning non-void [-Werror=return-type] Use C11 and C++11 standard means to declare a no-return function. Close #4122.
* i386/score: fix assembly mnemonicGedare Bloom2020-09-121-1/+1
| | | | Closes #4076.
* i386: Fix possible race condition on first context restoreJan Sommer2020-07-291-1/+1
| | | | | | | | | | | | Make sure that the esp is restored before the eflags register. When the init task is initially restored, system interrupts are activated when the eflags register is loaded. If the esp register still points to an address in the interrupt stack area (from early system initlization) the ISR might overwrite its own stack. Closes #4031
* i386: Replace fpcr clobber with memory clobberSebastian Huber2020-07-052-3/+3
| | | | Update #3943.
* score: Add CPU_USE_LIBC_INIT_FINI_ARRAYKinsey Moore2020-06-301-0/+2
| | | | | | | | This introduces the CPU_USE_LIBC_INIT_FINI_ARRAY define for use by CPU ports to determine which global constructor and destructor methods are used instead of placing architecture defines where they shouldn't be. Close #4018
* bsp/pc386: Define interrupt stack frame for smpJan Sommer2020-06-112-13/+17
| | | | | | - Defines CPU_Interrupt_frame in cpu_impl.h - Updates isq_asm.S to save/restore registers in matching order to interrupt frame
* bsp/pc386: Update context switch and restoreJan Sommer2020-06-112-16/+51
| | | | Uses similar flow in cpu_asm.S for i386 as for arm.
* bsp/pc386: Update GDT to work for SMPJan Sommer2020-06-112-5/+32
| | | | | | | | | | Create a GS segment in the GDT for each processor for storing TLS. This makes the GDT in startAP.S obsolete as all processors now share the same GDT, which is passed to each AP at startup. The correct segment for each processor is calculated in cpu_asm.S. Update #3335
* doxygen: Rename Score* groups in RTEMSScore*Sebastian Huber2019-04-041-1/+1
| | | | Update #3706
* doxygen: score: Add i386 CPU architecture groupAndreas Dachsberger2019-04-018-2/+57
| | | | Update #3706.
* Remove superfluous <rtems/system.h> includesSebastian Huber2019-03-141-1/+0
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* i386: Remove use of proc_ptrSebastian Huber2018-11-122-23/+6
| | | | Update #3585.
* build: Include header.am in cpukit/Makefile.amSebastian Huber2018-10-102-20/+10
| | | | | Include all cpukit/*/header.am files in cpukit/Makefile.am. This gets rid of all subtree Makefile.am and the sudirs hack.
* build: Merge score/cpu/*/Makefile.amSebastian Huber2018-10-101-9/+0
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* build: Remove specialized CPPFLAGSSebastian Huber2018-10-091-1/+0
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* score: Remove CPU_PROVIDES_IDLE_THREAD_BODYSebastian Huber2018-10-052-23/+1
| | | | | | | Remove the CPU_PROVIDES_IDLE_THREAD_BODY option to avoid unnecessary conditional compilation. Close #3539.
* Use rtems_task_exit()Sebastian Huber2018-10-021-1/+1
| | | | | Update #3530. Update #3533.
* score: Remove CPU_PARTITION_ALIGNMENTSebastian Huber2018-08-021-1/+0
| | | | | | | | | | | | | | Use the CPU_SIZEOF_POINTER alignment instead. The internal alignment requirement is defined by the use of Chain_Node (consisting of two pointers) to manage the free chain of partitions. It seems that previously the condition CPU_PARTITION_ALIGNMENT >= sizeof(Chain_Node) was true on all CPU ports. Now, we need an additional check. Update #3482.
* score: Add _CPU_Instruction_illegal()Sebastian Huber2018-07-231-0/+5
| | | | | | | | On some architectures/simulators it is difficult to provoke an exception with misaligned or illegal data loads. Use an illegal instruction instead. Update #3433.
* score: Add _CPU_Instruction_no_operation()Sebastian Huber2018-07-201-0/+5
| | | | | This helps to reduce the use of architecture-specific defines throughout the code base.
* score: Move context validation declarationsSebastian Huber2018-07-202-12/+12
| | | | | | | The context validation support functions _CPU_Context_validate() and _CPU_Context_volatile_clobber() are used only by one test program (spcontext01). Move the function declarations to the CPU port implementation header file.
* Rework initialization and interrupt stack supportSebastian Huber2018-06-271-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Statically initialize the interrupt stack area (_Configuration_Interrupt_stack_area_begin, _Configuration_Interrupt_stack_area_end, and _Configuration_Interrupt_stack_size) via <rtems/confdefs.h>. Place the interrupt stack area in a special section ".rtemsstack.interrupt". Let BSPs define the optimal placement of this section in their linker command files (e.g. in a fast on-chip memory). This change makes makes the CPU_HAS_SOFTWARE_INTERRUPT_STACK and CPU_HAS_HARDWARE_INTERRUPT_STACK CPU port defines superfluous, since the low level initialization code has all information available via global symbols. This change makes the CPU_ALLOCATE_INTERRUPT_STACK CPU port define superfluous, since the interrupt stacks are allocated by confdefs.h for all architectures. There is no need for BSP-specific linker command file magic (except the section placement), see previous ARM linker command file as a bad example. Remove _CPU_Install_interrupt_stack(). Initialize the hardware interrupt stack in _CPU_Initialize() if necessary (e.g. m68k_install_interrupt_stack()). The optional _CPU_Interrupt_stack_setup() is still useful to customize the registration of the interrupt stack area in the per-CPU information. The initialization stack can reuse the interrupt stack, since * interrupts are disabled during the sequential system initialization, and * the boot_card() function does not return. This stack resuse saves memory. Changes per architecture: arm: * Mostly replace the linker symbol based configuration of stacks with the standard <rtems/confdefs.h> configuration via CONFIGURE_INTERRUPT_STACK_SIZE. The size of the FIQ, ABT and UND mode stack is still defined via linker symbols. These modes are rarely used in applications and the default values provided by the BSP should be sufficient in most cases. * Remove the bsp_processor_count linker symbol hack used for the SMP support. This is possible since the interrupt stack area is now allocated by the linker and not allocated from the heap. This makes some configure.ac stuff obsolete. Remove the now superfluous BSP variants altcycv_devkit_smp and realview_pbx_a9_qemu_smp. bfin: * Remove unused magic linker command file allocation of initialization stack. Maybe a previous linker command file copy and paste problem? In the start.S the initialization stack is set to a hard coded value. lm32, m32c, mips, nios2, riscv, sh, v850: * Remove magic linker command file allocation of initialization stack. Reuse interrupt stack for initialization stack. m68k: * Remove magic linker command file allocation of initialization stack. Reuse interrupt stack for initialization stack. powerpc: * Remove magic linker command file allocation of initialization stack. Reuse interrupt stack for initialization stack. * Used dedicated memory region (REGION_RTEMSSTACK) for the interrupt stack on BSPs using the shared linkcmds.base (replacement for REGION_RWEXTRA). sparc: * Remove the hard coded initialization stack. Use the interrupt stack for the initialization stack on the boot processor. This saves 16KiB of RAM. Update #3459.
* score: Add CPU_INTERRUPT_STACK_ALIGNMENTSebastian Huber2018-06-271-0/+2
| | | | | | | Add CPU port define for the interrupt stack alignment. The alignment should take the stack ABI and the cache line size into account. Update #3459.
* Remove unused CPU_MODES_INTERRUPT_LEVELSebastian Huber2018-06-271-1/+0
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* Add _CPU_Counter_frequency()Sebastian Huber2018-06-152-0/+3
| | | | | | | | | | Add rtems_counter_frequency() API function. Use it to initialize the counter value converter via the new system initialization step (RTEMS_SYSINIT_CPU_COUNTER). This decouples the counter implementation and the counter converter. It avoids an unnecessary pull in of the 64-bit integer division from libgcc. Update #3456.
* Remove register keyword from public header filesSebastian Huber2018-04-163-24/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following code void f(void) { register int i; } gives a warning with GCC and -std=c++17 test.cc: In function ‘void f()’: test.cc:3:15: warning: ISO C++1z does not allow ‘register’ storage class specifier [-Wregister] register int i; ^ and clang with -std=c++14 test.cc:3:3: warning: 'register' storage class specifier is deprecated and incompatible with C++1z [-Wdeprecated-register] register int i; ^~~~~~~~~ 1 warning generated. Remove the use of the register keyword at least in the public header files for C++ compatibility. Close #3397.
* i386/smp: Export _CPU_SMP_Prepare_start_multitasking as a functionAmaan Cheval2018-03-161-2/+1
| | | | | | | | | | When it's a macro, a function declaration causes a compiler error due to the macro being expanded. Partial log showing error: https://gist.github.com/AmaanC/ab3521141479aa6f61ea25f5d74ebb4d Closes #3331
* i386/smp: Define CPU_Interrupt_frame as non-void structAmaan Cheval2018-03-161-1/+15
| | | | | | | | | | | | This change, excluding the #error directive, lets us make progress towards compiling i386 targets with --enable-smp. The #error directive needs to be there since the CPU_Interrupt_frame is used by the SMP context switching code, and this placeholder struct, if used, would only lead to more subtle bugs and errors. With the directive, the SMP context switching code can be improved separately. Updates #3331
* Rework i386 Paravirtualization to have paravirt.hJoel Sherrill2018-03-135-3/+70
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* i386/include/rtems/score/types.h: Eliminate this fileJoel Sherrill2018-03-124-49/+4
| | | | Updates #3327.
* Remove make preinstallChris Johns2018-01-2513-75/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A speciality of the RTEMS build system was the make preinstall step. It copied header files from arbitrary locations into the build tree. The header files were included via the -Bsome/build/tree/path GCC command line option. This has at least seven problems: * The make preinstall step itself needs time and disk space. * Errors in header files show up in the build tree copy. This makes it hard for editors to open the right file to fix the error. * There is no clear relationship between source and build tree header files. This makes an audit of the build process difficult. * The visibility of all header files in the build tree makes it difficult to enforce API barriers. For example it is discouraged to use BSP-specifics in the cpukit. * An introduction of a new build system is difficult. * Include paths specified by the -B option are system headers. This may suppress warnings. * The parallel build had sporadic failures on some hosts. This patch removes the make preinstall step. All installed header files are moved to dedicated include directories in the source tree. Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc, etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g. erc32, imx, qoriq, etc. The new cpukit include directories are: * cpukit/include * cpukit/score/cpu/@RTEMS_CPU@/include * cpukit/libnetworking The new BSP include directories are: * bsps/include * bsps/@RTEMS_CPU@/include * bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include There are build tree include directories for generated files. The include directory order favours the most general header file, e.g. it is not possible to override general header files via the include path order. The "bootstrap -p" option was removed. The new "bootstrap -H" option should be used to regenerate the "headers.am" files. Update #3254.
* i386: Support thread-local storage (TLS)Sebastian Huber2017-06-123-7/+43
| | | | Update #2468.
* i386: Move _CPU_Context_Initialize()Sebastian Huber2017-06-092-46/+65
| | | | Update #2468.
* cpukit/../i386/cpu.c: Use inttypes.h to fix 1 warning.Cillian O'Donnell2017-04-141-1/+2
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