summaryrefslogtreecommitdiffstats
path: root/cpukit (follow)
Commit message (Collapse)AuthorAgeFilesLines
* rtems-fdt/rtems-fdt.c: Fix bug in loop terminationG S Niteesh Babu2021-03-211-1/+1
| | | | | The while loop, loops infinitely in case of raw FDT data. The loop condition (size) is not modified during iterations.
* rtems: Relax mode checks in rtems_signal_catch()Sebastian Huber2021-03-191-2/+8
| | | | | | | | Check only for invalid modes if a valid handler is presented to rtems_signal_catch(). When NULL is used for the handler, ASR processing is disabled and the mode is not used. Update #4244.
* rtems: Fix rtems_task_mode()Sebastian Huber2021-03-181-16/+22
| | | | | | Do the ASR and preemption mode change only if requested by the mode mask. The bug was introduced by 508f868237225a75e566d9fd304206363cfe441d.
* rtems: Improve semaphore create error checksSebastian Huber2021-03-161-6/+4
| | | | | | Do not mix checks for different error indicators (RTEMS_NOT_DEFINED and RTEMS_INVALID_NUMBER). This simplifies the specification of rtems_semaphore_create().
* rtems: Allow initially locked MrsP semaphoresSebastian Huber2021-03-162-9/+22
| | | | | | Rejecting initially locked MrsP semaphores was due to a limitiation of the early limitiation of the MrsP protocol. This limitation no longer exists.
* rtems: Require RTEMS_PRIORITY for MrsP semaphoresSebastian Huber2021-03-162-3/+4
| | | | | | | | | MrsP semaphores are a generalization of the priority ceiling semaphores for SMP configurations. Priority ceiling semaphores are required to use the priority task wait queue discipline. Require this discipline also for MrsP semaphores. Close #4347.
* score: Add Thread_Configuration::cpu_time_budgetSebastian Huber2021-03-166-70/+49
| | | | | Move the CPU time budget to the thread configuration. This simplifies _Thread_Initialize().
* leon,tn-0018: work around GRLIB-TN-0018 errataDaniel Hellstrom2021-03-116-1/+105
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Overview ======== The errata is worked around in the kernel without requiring toolchain modifications. It is triggered the JMPL/RETT return from trap instruction sequence never generated by the compiler and. There are also other conditions that must must be true to trigger the errata, for example the instruction that the trap returns to has to be a JMPL instruction. The errata can only be triggered if certain data is corrected by ECC (inflicted by radiation), thus it can not be triggered under normal operation. For more information see: www.gaisler.com/notes Affected RTEMS target BSPs: * GR712RC * UT699 * UT700/699E The work around is enabled by defining __FIX_LEON3_TN0018 at build time. After applying the following GCC patch, GCC will set the define when compiling for an affected multilib: * GR712RC (-mcpu=leon3 -mfix-gr712rc) * UT700/UT699E (-mpcu=leon3 -mfix-ut700) * UT699 (-mcpu=leon -mfix-ut699) When building for another multilib and TN0018 is still required, it is possible to enable it on the RTEMS kernel configure line using the TARGET_CFLAGS (-D__FIX_LEON3FT_TN0018) or other by other means. The following GCC patch sets __FIX_LEON3FT_TN0018 for the affected RTEMS multilibs: --------- diff --git a/gcc/config/sparc/rtemself.h b/gcc/config/sparc/rtemself.h index 6570590..ddec98c 100644 --- a/gcc/config/sparc/rtemself.h +++ b/gcc/config/sparc/rtemself.h @@ -33,6 +33,8 @@ builtin_assert ("system=rtems"); \ if (sparc_fix_b2bst) \ builtin_define ("__FIX_LEON3FT_B2BST"); \ + if (sparc_fix_gr712rc || sparc_fix_ut700 || sparc_fix_ut699) \ + builtin_define ("__FIX_LEON3FT_TN0018"); \ } \ while (0) --------- Workaround Implementation ========================= In general there are two approaches that the workaround uses: A) avoid ECC restarting the RETT instruction B) avoid returning from trap to a JMPL instruction Where A) comes at a higher performance cost than B), so B) is used where posssible. B) can be achived for certain returns from trap handlers if trap entry is controlled by assembly, such as system calls. A) A special JMPL/RETT sequence where instruction cache is disabled temporarily to avoid RETT containing ECC errors, and reading of RETT source registers to "clean" them from incorrect ECC just before RETT is executed. B) The work around prevents JMPL after system calls (TA instruction) and modifies assembly code on return from traps jumping back to application code. Note that for some traps the trapped instruction is always re-executed and can therefore not trigger the errata, for example the SAVE instruction causing window overflow or an float instruction causing FPU disabled trap. RTEMS SPARC traps workaround implementation: NAME NOTE TRAP COMMENT * window overflow 1 - 0x05 always returns to a SAVE * window underflow 1 - 0x06 always returns to a RESTORE * interrupt traps 2 - 0x10..1f special rett sequence workaround * syscall 3 - 0x80 shutdown system - never returns * ABI flush windows 2 - 0x83 special rett sequence workaround * syscall_irqdis 4 - 0x89 * syscall_irqen 4 - 0x8A * syscall_irqdis_fp 1 - 0x8B always jumps back to FP instruction * syscall_lazy_fp_switch 5 - 0x04 A) jumps back to FP instruction, or to B) _Internal_error() starting with SAVE Notes: 1) no workaround needed because trap always returns to non-JMPL instruction 2) workaround implemented by special rett sequence 3) no workaround needed because system call never returns 4) workaround implemented by inserting NOP in system call generation. Thus fall into 1) when workaround is enabled and no trap handler fix needed. 5) trap handler branches into both 1) and returning to _Internal_error() which starts with a SAVE and besides since it shuts down the system that RETT should never be in cache (only executed once) so fix not necessary in this case. Any custom trap handlers may also have to be updated. To simplify that, helper work around assembly code in macros are available in a separate include file <libcpu/grlib-tn-0018.h>. Close #4155.
* sparc,leon: avoid triggering LEON3FT errata TN-0009Daniel Hellstrom2021-03-111-2/+3
| | | | Close #4336.
* sparc,leon: avoid triggering TN-0009 bad sequenceDaniel Hellstrom2021-03-111-1/+2
| | | | Update #4336.
* sparc: fix bad register alignment for 64 bit storeDaniel Hellstrom2021-03-111-1/+3
|
* sparc: Remove sequences that the B2BST scan script warns aboutDaniel Cederman2021-03-112-3/+6
| | | | Update #4336.
* basedefs: Clarify RTEMS_STRING(), RTEMS_XSTRING()Frank Kühndel2021-03-091-2/+4
|
* main_help.c: Unchecked return value from library (CID #1437650)Ryan Long2021-03-081-1/+2
| | | | | | CID 1437650: Unchecked return value from library in rtems_shell_help(). Closes #4291
* pwdgrp.c: Fix Unchecked return value from library (CID #1255518)Ryan Long2021-03-081-1/+5
| | | | | | CID 1255518: Unchecked return value from library in pwdgrp_init(). Closes #4282
* main_chmod.c: Fix Unchecked return value from library (CID #1063856)Ryan Long2021-03-081-2/+5
| | | | | | | CID 1063856: Unchecked return value from library in rtems_shell_main_chmod(). Closes #4281
* gen_uuid.c: Fix two Unchecked return value from library errorsRyan Long2021-03-081-3/+8
| | | | | | | CID 1049146: Unchecked return value from library in get_clock(). CID 1049147: Unchecked return value from library in get_random_fd(). Closes #4280
* main_edit.c: Fix Unchecked return value (CID #1255318)Ryan Long2021-03-081-1/+1
| | | | | | CID 1255318: Unchecked return value in display_line(). Updates #4257
* pci_cfg_read.c: Fix Missing break in switch (CID #1399723)Ryan Long2021-03-051-0/+1
| | | | | | CID 1399723: Missing break in switch in pci_read_addressable(). Closes #4279
* cpuusagetop.c: Fix three Missing break in switch Coverity errorsRyan Long2021-03-051-0/+3
| | | | | | | | CID 1399726: Missing break in switch in task_usage(). CID 1399728: Missing break in switch in task_usage(). CID 1399742: Missing break in switch in task_usage(). Closes #4278
* bsps/aarch64: RTEMS_DEBUG stack alignment faultsKinsey Moore2021-03-051-2/+8
| | | | | | Run with stack alignment faults enabled under RTEMS_DEBUG to catch any stack misalignments early. This makes it easier to track them down should they ever occur.
* score/aarch64: Fix interrupt level readsAlex White2021-03-052-3/+7
|
* cpukit: Explicitly enforce alignment requirementsKinsey Moore2021-03-051-20/+32
| | | | | | | | | | | According to commentary on GCC bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99143, the alignment behavior of linker sections on which RTEMS has relied was never guaranteed to be consistent across platforms and any alignment requirements for linker sections needs to be enforced explicitly. This adds those explicit alignment requirements. Closes #4255.
* aarch64: Fix context switchSebastian Huber2021-03-051-2/+2
| | | | | | The Per_CPU_Control::isr_dispatch_disable is a 32-bit integer. Close #4206.
* score: Ensure stack alignment requirementSebastian Huber2021-03-055-24/+54
| | | | | | | | Make sure that a user-provided stack size is the minimum size allocated for the stack. Make sure we meet the stack alignment requirement also for CPU ports with CPU_STACK_ALIGNMENT > CPU_HEAP_ALIGNMENT.
* CONFIGURE_MAXIMUM_THREAD_LOCAL_STORAGE_SIZESebastian Huber2021-03-052-3/+16
| | | | | Ensure that CONFIGURE_MAXIMUM_THREAD_LOCAL_STORAGE_SIZE meets the task storage alignment requirement.
* rtems: Fix RTEMS_TASK_STORAGE_ALIGNMENTSebastian Huber2021-03-041-1/+1
| | | | | Make sure we meet the stack alignment requirement for user-provided thread storage areas.
* score: Enforce CPU_STACK_ALIGNMENT requirementsSebastian Huber2021-03-0412-114/+22
| | | | | Clarify CPU_STACK_ALIGNMENT requirements in no_cpu port. Add static assertion to enforce CPU_STACK_ALIGNMENT requirements.
* rtems: Simplify rtems_signal_catch()Sebastian Huber2021-03-021-1/+19
| | | | | In uniprocessor configurations, we can simplify rtems_signal_catch(). Add a validation test for the SMP special case.
* rtems: Simplify _Signal_Action_handler()Sebastian Huber2021-03-021-8/+3
| | | | | Use the invariant that an ASR is only processed if ASR processing is enabled.
* score: Simplify _Objects_Name_to_id_u32()Sebastian Huber2021-03-011-20/+21
| | | | | | | Remove superfluous check for the objects maximum since the maximum is also used as a loop limit. Fix formatting.
* score: Fix _Stack_Extend_size()Sebastian Huber2021-03-011-7/+21
| | | | | Check for an integer overflow. Add a validation test for task create errors.
* getgrent.c, record-client.c: Add missing includes for assert.hVijay Kumar Banerjee2021-02-272-0/+2
|
* rtems-debugger-threads.c: Fix Unchecked return value error (CID #1468688)Ryan Long2021-02-261-1/+3
| | | | | | CID 1468688: Unchecked return value in snapshot_thread(). Closes #4262
* getgrent.c: Fix Unchecked return value error (CID #1459004)Ryan Long2021-02-261-1/+3
| | | | | | CID 1459004: Unchecked return value in endgrent(). Closes #4261
* record-client.c: Fix Unchecked return value (CID #1456677)Ryan Long2021-02-261-1/+3
| | | | | | CID 1456677: Unchecked return value in resolve_hold_back(). Closes #4260
* printertask.c: Fix Unchecked return value (CID #1399710)Ryan Long2021-02-261-3/+8
| | | | | | | CID 1399710: Unchecked return value in printer_task(). CID 1472764: Unchecked return value in rtems_print_printer_task(). Closes #4258
* build: Install <rtems/score/hash.h>Sebastian Huber2021-02-261-0/+1
| | | | Update #4267.
* score: Fix thread initializationSebastian Huber2021-02-268-151/+172
| | | | | | | | Close the thread object if a thread create extension fails. Also call the delete extension to avoid resource leaks in early extensions if a late extension fails. Close #4270.
* libtest: Print SHA256 hash in base64urlSebastian Huber2021-02-261-7/+6
|
* libtest: Report target hashSebastian Huber2021-02-261-0/+2
| | | | Update #4267.
* Add system initialization step for target hashSebastian Huber2021-02-262-1/+10
| | | | Update #4267.
* rtems: Add rtems_get_target_hash()Sebastian Huber2021-02-261-0/+33
| | | | Update #4267.
* score: Add Hash HandlerSebastian Huber2021-02-263-0/+245
| | | | Update #4267.
* score: Add _IO_Base64url()Sebastian Huber2021-02-252-25/+82
| | | | Update #4267.
* libtest: Report build labelSebastian Huber2021-02-251-0/+1
| | | | Update #4269.
* rtems: Add rtems_get_build_label()Sebastian Huber2021-02-253-1/+83
| | | | Update #4269.
* config: Adjust stack allocator initializationSebastian Huber2021-02-243-3/+12
| | | | | | | Use the right system initialization step for the stack allocator initialization. Do the stack allocator initialization before the workspace initialization so that _Memory_Allocate() can be used to get memory for the allocator.
* libtest: Add support to seize/surrender objectsSebastian Huber2021-02-242-0/+59
|
* rtems: Move rtems_task_priority definitionSebastian Huber2021-02-243-4/+11
| | | | | | This type is not only used by Task Manager directives. This is a preparation to move the rtems_scheduler_*() directives from <rtems/rtems/tasks.h> to a new <rtems/rtems/scheduler.h>.
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 15:29:23 +0000