Joel Sherrill 734208a49b bsp/shared/atomics: New directory
Provide missing GCC atomics helpers as part of BSPs where GCC
does not know how to provide it since the CPU's ISA has no
atomic instructions. The implementation provided in
bsps/shared/atomics/__atomic_test_and_set.c should work
on any single core CPU.

The BSPs that need thie function tend to have older cores. This
is the list of BSPs:

arm - csb336, csb337, csb637, edb7312, gumstix, kit637_v6, lpc24xx_ea,
  lpc24xx_ncs_ram, lpc24xx_ncs_rom_ext, lpc24xx_ncs_rom_int,
  lpc24xx_plx800_ram, lpc24xx_plx800_rom_int, lpc32xx_mzx,
  lpc32xx_mzx_stage_1, lpc32xx_mzx_stage_2, lpc32xx_phycore,
  rtl22xx, rtl22xx_t, smdk2410
m68k - av5282, mcf5329
mips - jmr3904
moxie - moxiesim
nios2 - nios2_iss
riscv - grv32i, grv32im, niosvc10lp, noel32im, rv32i, rv32im,
sparc - ut699
2025-06-19 23:30:57 +00:00
2025-06-07 11:58:28 -04:00
2025-06-19 23:30:57 +00:00
2024-11-21 04:22:31 +01:00
2025-05-22 19:35:12 +00:00
2025-01-16 14:52:22 +00:00
2025-01-10 17:06:30 -06:00
2024-12-04 14:55:54 -07:00

Real-Time Executive for Multiprocessing Systems

RTEMS is a real-time executive (kernel) which provides a high performance environment for embedded applications with the following features:

  • Standards based user interfaces.
  • Multitasking capabilities.
  • Homogeneous and heterogeneous multiprocessor systems.
  • Event-driven, priority-based, preemptive scheduling.
  • Optional rate monotonic scheduling.
  • Intertask communication and synchronisation.
  • Priority inheritance.
  • Responsive interrupt management.
  • Dynamic memory allocation.
  • High level of user configurability.
  • Open source with a friendly user license.

Project git repositories are located at:

Online documentation is available at:

RTEMS Doxygen for CPUKit:

RTEMS POSIX 1003.1 Compliance Guide:

RTEMS Mailing Lists for general purpose use the users list and for developers use the devel list.

The version number for this software is indicated in the VERSION file.

Description
RTEMS is a ​real-time executive in use by embedded systems applications around the world and beyond
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