-------------------------------------------------------------------------------- **Home:** **Release:** 5.4-rc2 **Date:** 21 August 2026 -------------------------------------------------------------------------------- [RN-H]: rtems-5.4-rc2-release-notes [RN-P]: rtems-5.4-rc2-release-notes.pdf [RN-J]: rtems-5.4-rc2-release-notes.json.xz The Real-Time Executive for Multiprocessor Systems or RTEMS is an open source Real Time Operating System (RTOS) that supports open standard application programming interfaces (API) such as POSIX. It is used in space flight, medical, networking and many more embedded devices using processor architectures including AARCH, ARM, PowerPC, SPARC, Intel, RISCV, Microblaze and more (a full list is provided at the end). This release directory contains the source code for the RTEMS 5.4-rc2 operating system and tools. All the documenation provided in HTML and PDF formats. Please drop by our Discord server () and let us know how you are using RTEMS. We love hearing about user projects. Many thanks to everyone who helped create this release. Regards *The RTEMS Development Team.* ## RTEMS Web Sites --------- ------------------------------------------ Home Download Docs Developer Discord Lists --------- ------------------------------------------ ## Release Files --------------------------------------------------------------------------------- 5.4-rc2 Top level directory ------------------------------------------ -------------------------------------- [README.txt](README.txt), `index.html` This document [contrib](contrib) Directory contains extra release related files [docs](docs) The generated RTEMS documentation [sources](sources) Source code for this release [rtems-5.4-rc2-release-notes][RN-H] HTML RTEMS Release notes [rtems-5.4-rc2-release-notes.pdf][RN-P] PDF RTEMS Release notes [rtems-5.4-rc2-release-notes.json.xz][RN-J] RTEMS Release notes data (JSON) [sha512sum.txt](sha512sum.txt) The SHA512 checksums for this directory --------------------------------------------------------------------------------- [S-RSB]: sources/rtems-source-builder-5.4-rc2.tar.xz [S-DEPLOY]: sources/rtems-deployment-5.4-rc2.tar.xz [S-K]: sources/rtems-5.4-rc2.tar.xz [S-T]: sources/rtems-tools-5.4-rc2.tar.xz [S-DOC]: sources/rtems-docs-5.4-rc2.tar.xz [S-BSD]: sources/rtems-libbsd-5.4-rc2.tar.xz [S-LWIP]: sources/rtems-lwip-5.4-rc2.tar.xz [S-NLEG]: sources/rtems-net-legacy-5.4-rc2.tar.xz [S-NSRV]: sources/rtems-net-services-5.4-rc2.tar.xz [S-EX]: sources/rtems-examples-5.4-rc2.tar.xz [S-CS]: sources/sha512sum.txt Source Downloads | RTEMS Source Code -----------------------------------------------|--------------------------------------- [rtems-5.4-rc2.tar.xz][S-K] | RTEMS kernel [rtems-source-builder-5.4-rc2.tar.xz][S-RSB] | RTEMS Source Builder [rtems-deployment-5.4-rc2.tar.xz][S-DEPLOY] | RTEMS Deployment [rtems-tools-5.4-rc2.tar.xz][S-T] | RTEMS Tools [rtems-docs-5.4-rc2.tar.xz][S-DOC] | RTEMS Documentation source [rtems-libbsd-5.4-rc2.tar.xz][S-BSD] | RTEMS LibBSD [rtems-lwip-5.4-rc2.tar.xz][S-LWIP] | RTEMS LwIP [rtems-net-legacy-5.4-rc2.tar.xz][S-NLEG] | RTEMS Legacy Networking [rtems-net-services-5.4-rc2.tar.xz][S-NSRV] | RTEMS Networking Services [rtems-examples-5.4-rc2.tar.xz][S-EX] | RTEMS Examples [sources](sources) | All source code for this release [sha512sum.txt][S-CS] | SHA512 checksums for the sources directory ## RTEMS Documentation [D-O]: docs/html [D-U-O]: docs/html/user [D-U-P]: docs/rtems-5.4-rc2-user.pdf [D-U-H]: docs/rtems-5.4-rc2-user-html.tar.xz [D-C-O]: docs/html/c-user [D-C-P]: docs/rtems-5.4-rc2-c-user.pdf [D-C-H]: docs/rtems-5.4-rc2-c-user-html.tar.xz [D-P-O]: docs/html/posix-users [D-P-P]: docs/rtems-5.4-rc2-posix-users.pdf [D-P-H]: docs/rtems-5.4-rc2-posix-users-html.tar.xz [D-E-O]: docs/html/eng [D-E-P]: docs/rtems-5.4-rc2-eng.pdf [D-E-H]: docs/rtems-5.4-rc2-eng-html.tar.xz [D-N-O]: docs/html/legacy-networking [D-N-P]: docs/rtems-5.4-rc2-legacy-networking.pdf [D-N-H]: docs/rtems-5.4-rc2-legacy-networking-html.tar.xz [D-S-O]: docs/html/shell [D-S-P]: docs/rtems-5.4-rc2-shell.pdf [D-S-H]: docs/rtems-5.4-rc2-shell-html.tar.xz [D-O-O]: docs/html/doxygen [D-O-H]: docs/rtems-5.4-rc2-doxygen-html.tar.xz [Online RTEMS 5.4-rc2 Documentation][D-O] The generated documentation packages can be found in the `docs` directory. The following manuals are available as compressed HTML tar files or PDF: RTEMS User Manual ~ * [docs/html/user][D-U-O] * [docs/rtems-5.4-rc2-user.pdf][D-U-P] * [docs/rtems-5.4-rc2-user-html.tar.xz][D-U-H] RTEMS C User Manual ~ * [docs/html/c-user][D-C-O] * [docs/rtems-5.4-rc2-c-user.pdf][D-C-P] * [docs/rtems-5.4-rc2-c-user-html.tar.xz][D-C-H] RTEMS POSIX User Manual ~ * [docs/html/posix-users][D-P-O] * [docs/rtems-5.4-rc2-posix-users.pdf][D-P-P] * [docs/rtems-5.4-rc2-posix-users-html.tar.xz][D-P-H] RTEMS Software Engineering Manual ~ * [docs/html/eng][D-E-O] * [docs/rtems-5.4-rc2-eng.pdf][D-E-P] * [docs/rtems-5.4-rc2-eng-html.tar.xz][D-E-H] RTEMS Networking User Manual ~ * [docs/html/networking][D-N-O] * [docs/rtems-5.4-rc2-networking.pdf][D-N-P] * [docs/rtems-5.4-rc2-networking-html.tar.xz][D-N-H] RTEMS Shell User Manual ~ * [docs/html/shell][D-S-O] * [docs/rtems-5.4-rc2-shell.pdf][D-S-P] * [docs/rtems-5.4-rc2-shell-html.tar.xz][D-S-H] RTEMS Doxygen ~ * [docs/html/doxygen][D-O-O] * [docs/rtems-5.4-rc2-doxygen-html.tar.xz][D-O-H] ## Quick Guide to Building For new user the Quick Start in the User Manual contains a details Quick Start guide. Download the User Manual: and follow the instructions in the Quick Start section. If are familiar with RTEMS or just want to get going the following steps will download the RTEMS Source Builder: ~~~~~~~ cd mkdir -p development/rtems cd development/rtems wget https://ftp.rtems.org/pub/rtems/releases/5/rc/5.4-rc2/sources/rtems-source-builder-5.4-rc2.tar.xz tar Jxf rtems-source-builder-5.4-rc2.tar.xz cd rtems-source-builder-5.4-rc2/rtems ~~~~~~~ To build the tools for the ARM architecture: ~~~~~~~ ../source-builder/sb-set-builder \ --prefix=$HOME/development/rtems/5.4-rc2 \ 5/rtems-arm ~~~~~~~ To build the tools, kernel and all packages for the Beagleboneblack: ~~~~~~~ ../source-builder/sb-set-builder \ --prefix=$HOME/development/rtems/5.4-rc2 \ bsps/beagleboneblack ~~~~~~~ If you encounter a problem please drop by our Discord server () or port to . If you find a bug please raise an issue at ## RTEMS 5.4 Release Notes ### Source Builder All build sets depending on github.com, git.rtems.org, and devel.rtems.org have been migrated to use the appropriate resources on gitlab.rtems.org. As part of this process, the SIS build set has been modified to use a rtems-sis-2.21 tarball instead of a sis-2.21 tarball as that is the new name for the project in the RTEMS GitLab infrastructure. The contents of the tarball are identical to the previously generated tarballs except for the root path. ## RTEMS 5.3 Release Notes ## RTEMS 5.2 Release Notes ### API Changes * Termios * `txTaskCharsDequeued` has been added to `struct rtems_termios_tty`. With that the size of the structure changed. Libraries and applications that use the structure should be recompiled. * The `l_start` line discipline function now receives the number of characters that have been sent. It is save to ignore the extra parameter for applications that don't need it. #### API Additions * NTP support * Addition of NTP update second handler via _Timecounter_Set_NTP_update_second() from ## RTEMS 5.1 Release Notes ### RTEMS Improvements In this section, we discuss public API level changes as well as improvements to the implementation of those API routines. Public API changes usually fall into one of the following categories: * Addition of new methods * Modifications to prototypes * Deletion of obsoleted methods Implementation improvements usually fall into one of the following categories: * Algorithm improvements in execution time or memory usage * Critical section reduction ### API Changes * The header file no longer includes and . * Most services use now statically allocated resources and no longer need accounting in the application configuration. * The work area initialization (RTEMS Work Space and C Program Heap) changed. BSPs must provide now a `_Memory_Get()` function. * POSIX timers and signals are now the only POSIX resources which are enabled by the POSIX API. #### API Additions * Support for recording of high-frequency events in particular on SMP systems * Termios supports now generation of signals. * New fatal sources: * `RTEMS_FATAL_SOURCE_EXCEPTION` * `RTEMS_FATAL_SOURCE_PANIC` * `RTEMS_FATAL_SOURCE_SMP` * `RTEMS_FATAL_SOURCE_INVALID_HEAP_FREE` * `RTEMS_FATAL_SOURCE_HEAP` * New chain API function: rtems_chain_get_first_unprotected() * Add user defined thread names: pthread_setname_np() and pthread_getname_np() * Support for xz compression/decompression * Added rtems_scheduler_ident_by_processor() * Added rtems_scheduler_ident_by_processor_set() * Added RTEMS_PREDICT_TRUE() and RTEMS_PREDICT_FALSE() for static branch prediction hints * Added rtems_malloc() and rtems_calloc() * Added rtems_scheduler_get_maximum_priority() * Added rtems_scheduler_get_processor() * Added rtems_scheduler_get_processor_maximum() #### API Implementation Improvements * Priority inheritance is now transitive. * POSIX key destructors are now called during thread restart. * More robust thread dispatching on SMP and ARM Cortex-M #### API Deprecations * `rtems_iterate_over_all_threads()`. Use `rtems_task_iterate()` instead. * `rtems_get_current_processor()`. Use `rtems_scheduler_get_processor()` instead. * `rtems_get_processor_count()`. Use `rtems_scheduler_get_processor_maximum()` instead. * `boolean` is deprecated. Use `bool` instead. * `single_precision` is deprecated. Use `float` instead. * `double_precision` is deprecated. Use `double` instead. * `proc_ptr` is deprecated. Use a proper function pointer type. * rtems_context * rtems_context_fp * rtems_extension * `rtems_io_lookup_name()` is deprecated. Use `stat()` instead. * region_information_block * `rtems_thread_cpu_usage_t` is deprecated. Use `struct timespec` instead. * `rtems_rate_monotonic_period_time_t` is deprecated. Use `struct timespec` instead. * `_Copyright_Notice` is deprecated. Use `rtems_get_copyright_notice()` instead. * `_RTEMS_version` is deprecated. Use `rtems_get_version_string()` instead. * `RTEMS_MAXIMUM_NAME_LENGTH` is deprecated. Use `sizeof(rtems_name)` instead. * `RTEMS_COMPILER_NO_RETURN_ATTRIBUTE` is deprecated. Use `RTEMS_NO_RETURN` instead. * `RTEMS_COMPILER_PURE_ATTRIBUTE` is deprecated. Use `RTEMS_PURE` instead. * `RTEMS_COMPILER_DEPRECATED_ATTRIBUTE` is deprecated. Use `RTEMS_DEPRECATED` instead. * `RTEMS_COMPILER_UNUSED_ATTRIBUTE` is deprecated. Use `RTEMS_UNUSED` instead. * `RTEMS_COMPILER_PACKED_ATTRIBUTE` is deprecated. Use `RTEMS_PACKED` instead. * Including is deprecated. This header file will be removed in RTEMS 6. #### API Removals * `rtems_clock_get()` * API defined by * Task notepads * Task variables ### SMP Support Improvements * Reimplemenation of the Multiprocessor Resource Sharing Protocol (MrsP) to address performance issues. * Implementation of the O(m) Independence-Preserving Protocol (OMIP). * Support for thread pinning (enables support for Epoch Based Reclamation; used by libbsd) * The default SMP scheduler supports now EDF scheduling, one-to-one and one-to-all thread to processor affinities, and thread pinning. * Timers (watchdogs) use now per-processor data structures. * Improved POSIX key to value look up. * The Ada runtime supports now SMP configurations. ### Configuration Changes * All configuration options are now documented. * Most resources are now statically allocated and no longer use the workspace. * New configuration options: * `CONFIGURE_MAXIMUM_THREAD_NAME_SIZE` * `CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE` * `CONFIGURE_DIRTY_MEMORY` * `CONFIGURE_RECORD_EXTENSIONS_ENABLED` * `CONFIGURE_RECORD_FATAL_DUMP_BASE64` * `CONFIGURE_RECORD_FATAL_DUMP_BASE64_ZLIB` * `CONFIGURE_RECORD_PER_PROCESSOR_ITEMS` * `CONFIGURE_VERBOSE_SYSTEM_INITIALIZATION` * `CONFIGURE_IMFS_ENABLE_MKFIFO` * `CONFIGURE_IMFS_DISABLE_MKNOD_FILE` * Renamed configuration options: * `CONFIGURE_SMP_MAXIMUM_PROCESSORS` to `CONFIGURE_MAXIMUM_PROCESSORS` * `CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS` to `CONFIGURE_MAXIMUM_FILE_DESCRIPTORS` * Removed configuration options: * `CONFIGURE_SMP_APPLICATION` * `CONFIGURE_HAS_OWN_CONFIGURATION_TABLE` * `CONFIGURE_HAS_OWN_BDBUF_TABLE` * `CONFIGURE_HAS_OWN_DEVICE_DRIVER_TABLE` * `CONFIGURE_HAS_OWN_FILESYSTEM_TABLE` * `CONFIGURE_HAS_OWN_INIT_TABLE` * `CONFIGURE_HAS_OWN_MOUNT_TABLE` * `CONFIGURE_HAS_OWN_MULTIPROCESSING_TABLE` * `CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE` * `CONFIGURE_DISABLE_SMP_CONFIGURATION` * `CONFIGURE_MAXIMUM_DEVICES` * The helper macro for the clustered scheduler configuration `RTEMS_SCHEDULER_EDF_SMP()` has now only one parameter. ## RTEMS Shell Improvements The following improvements were made to the RTEMS Shell: * Telnet now supports `joel` script output. Running a `joel` script in a telnet session now sees the output. Nested `joel` scripts also output to the telnet session. ## General * The system initialization is now performed by system initialization handlers registered in a special linker set (similar to global constructors in C++). * API header files have been collected from the various locations in the RTEMS source tree and placed under `cputkit/include` and for BSPs under `bsps/include`. There is no header pre-install phase when building RTEMS. * Improved parallel build performance. Nested `make` calls now run in parallel. * Added support for the RISC-V 32-bit and 64-bit architecture. * Added support for the 64-bit PowerPC architecture using the ELFv2 ABI. * Synchronized support for Journalling Flash File System, Version 2 (JFFS2) with Linux 4.17. * Import of libfdt from device tree compiler project. * Added `libdebugger`, a thread aware GDB debug server with TCP transport support. Currently the supported architectures are i386 and ARM. The ARM support is experimental. * Most BSP use now function and data sections to support the linker garbage collection. * This is the last release of RTEMS with the `autoconf`/`automake` build system. RTEMS will be moving to a `waf` based build system driven from YAML specifications files. The effort is part of the on-going wotk in the RTEMS project to support qualification of the operating system. ## Architectures Removed obsolete architectures: * AVR * H8300 * M32C * M32R Obsoleted architectures: * Epiphany * PowerPC SPE ## BSPs and Device Drivers * General * BSP source code moved from `c/src/lib/libbsp` to `bsps` in the source tree. The configure and some other related pieces are still held in the original path. * New BSPs * BSPs for ARM * `atsamv` - Microchip (former Atmel) SAM V71 series * `xilinx-zynqmp` - Xilinx Zynq UltraScale+ MPSoC platform * BSPs for RISC-V * `riscv` - Family of generic BSPs * `griscv` - BSP based on the GRLIB * Significant updates to existing BSPs * `powerpc/qoriq`: 64-bit support * Removal of obsoleted BSPs * `arm/gdbarmsim` * `arm/nds` * `arm/gp32` * `arm/ep1a` * `arm/score603e` * `m68k/idp` * Obsoleted BSPs * `m68k/gen68302` * `m68k/ods68302` * `powerpc/brs5l` * `powerpc/brs6l` * `powerpc/dp2` * `powerpc/mbx8xx` * `powerpc/mpc5566evb_spe` * `powerpc/mpc5643l_dpu` * `powerpc/mpc5643l_evb` * `powerpc/mpc5674f_ecu508_app` * `powerpc/mpc5674f_ecu508_boot` * `powerpc/mpc5674fevb_spe` * `powerpc/mpc5674f_rsm6` * Drivers * Drivers for `getentropy()` * New I2C device driver framework supporting the Linux user-space API * New SPI device driver framework supporting the Linux user-space API ## Newlib Changes * time_t is now 64-bit to adress the year 2038 problem. * General improvements in the feature test macros support. * Newlib internal locks are now supported, e.g. for FILE objects. * The standard input, output, and error FILE objects are now global and no longer thread-specific. * Added support for C++17 std::aligned_alloc ## Ecosystem * RSB support to build a BSP software stack of tools, kernel, libbsd, and supported 3rd party packages. * RTEMS Tester (`rtems-test`) support for DHCP/TFTP target hardware testing. * RTEMS Trace addition of a new trace record support for target tracing. * RTEMS Bootimage, a tool to portably create SD card images. ## Architectures and BSPs **Architectures:** 18 **BSP Families:** 85 **BSPs:** 199 arm |families:21 bsps:57 -----------------------------|--------------------- altcycv_devkit |altera-cyclone-v atsamv |atsam bbxm |beagle beagleboardorig |beagle beagleboardxm |beagle beagleboneblack |beagle beaglebonewhite |beagle csb336 |csb336 csb337 |csb337 csb637 |csb337 kit637_v6 |csb337 edb7312 |edb7312 gumstix |gumstix imx7 |imx lm3s3749 |lm3s69xx lm3s6965 |lm3s69xx lm3s6965_qemu |lm3s69xx lm4f120 |lm3s69xx lpc1768_mbed |lpc176x lpc1768_mbed_ahb_ram |lpc176x lpc1768_mbed_ahb_ram_eth |lpc176x lpc17xx_ea_ram |lpc24xx lpc17xx_ea_rom_int |lpc24xx lpc17xx_plx800_ram |lpc24xx lpc17xx_plx800_rom_int |lpc24xx lpc2362 |lpc24xx lpc23xx_tli800 |lpc24xx lpc24xx_ea |lpc24xx lpc24xx_ncs_ram |lpc24xx lpc24xx_ncs_rom_ext |lpc24xx lpc24xx_ncs_rom_int |lpc24xx lpc24xx_plx800_ram |lpc24xx lpc24xx_plx800_rom_int |lpc24xx lpc40xx_ea_ram |lpc24xx lpc40xx_ea_rom_int |lpc24xx lpc32xx_mzx |lpc32xx lpc32xx_mzx_stage_1 |lpc32xx lpc32xx_mzx_stage_2 |lpc32xx lpc32xx_phycore |lpc32xx raspberrypi |raspberrypi raspberrypi2 |raspberrypi realview_pbx_a9_qemu |realview-pbx-a9 rtl22xx |rtl22xx rtl22xx_t |rtl22xx smdk2410 |smdk2410 stm32f105rc |stm32f4 stm32f4 |stm32f4 tms570ls3137_hdk |tms570 tms570ls3137_hdk_intram |tms570 tms570ls3137_hdk_sdram |tms570 tms570ls3137_hdk_with_loader |tms570 xen_virtual |xen xilinx_zynq_a9_qemu |xilinx-zynq xilinx_zynq_zc702 |xilinx-zynq xilinx_zynq_zc706 |xilinx-zynq xilinx_zynq_zedboard |xilinx-zynq xilinx_zynqmp_ultra96 |xilinx-zynqmp bfin |families:3 bsps:3 -----------------------------|--------------------- TLL6527M |TLL6527M bf537Stamp |bf537Stamp eZKit533 |eZKit533 epiphany |families:1 bsps:1 -----------------------------|--------------------- epiphany_sim |epiphany_sim i386 |families:1 bsps:6 -----------------------------|--------------------- pc386 |pc386 pc486 |pc386 pc586 |pc386 pc586-sse |pc386 pc686 |pc386 pcp4 |pc386 lm32 |families:2 bsps:3 -----------------------------|--------------------- lm32_evr |lm32_evr lm32_evr_gdbsim |lm32_evr milkymist |milkymist m68k |families:16 bsps:20 -----------------------------|--------------------- av5282 |av5282 csb360 |csb360 gen68340 |gen68340 gen68360 |gen68360 gen68360_040 |gen68360 pgh360 |gen68360 COBRA5475 |genmcf548x m5484FireEngine |genmcf548x mcf5206elite |mcf5206elite mcf52235 |mcf52235 mcf5225x |mcf5225x mcf5235 |mcf5235 mcf5329 |mcf5329 mrm332 |mrm332 mvme147 |mvme147 mvme147s |mvme147s mvme162 |mvme162 mvme162lx |mvme162 mvme167 |mvme167 uC5282 |uC5282 mips |families:6 bsps:6 -----------------------------|--------------------- csb350 |csb350 hurricane |hurricane jmr3904 |jmr3904 malta |malta rbtx4925 |rbtx4925 rbtx4938 |rbtx4938 moxie |families:1 bsps:1 -----------------------------|--------------------- moxiesim |moxiesim nios2 |families:1 bsps:1 -----------------------------|--------------------- nios2_iss |nios2_iss no_cpu |families:1 bsps:1 -----------------------------|--------------------- no_bsp |no_bsp or1k |families:1 bsps:1 -----------------------------|--------------------- generic_or1k |generic_or1k powerpc |families:18 bsps:48 -----------------------------|--------------------- beatnik |beatnik brs5l |gen5200 brs6l |gen5200 dp2 |gen5200 icecube |gen5200 pm520_cr825 |gen5200 pm520_ze30 |gen5200 br_uid |gen83xx hsc_cm01 |gen83xx mpc8309som |gen83xx mpc8313erdb |gen83xx mpc8349eamds |gen83xx haleakala |haleakala mcp750 |motorola_powerpc mtx603e |motorola_powerpc mvme2100 |motorola_powerpc mvme2307 |motorola_powerpc qemuprep |motorola_powerpc qemuprep-altivec |motorola_powerpc gwlcfm |mpc55xxevb mpc5566evb |mpc55xxevb mpc5566evb_spe |mpc55xxevb mpc5643l_dpu |mpc55xxevb mpc5643l_evb |mpc55xxevb mpc5668g |mpc55xxevb mpc5674f_ecu508_app |mpc55xxevb mpc5674f_ecu508_boot |mpc55xxevb mpc5674f_rsm6 |mpc55xxevb mpc5674fevb |mpc55xxevb mpc5674fevb_spe |mpc55xxevb phycore_mpc5554 |mpc55xxevb mpc8260ads |mpc8260ads mvme3100 |mvme3100 mvme5500 |mvme5500 psim |psim qemuppc |qemuppc qoriq_core_0 |qoriq qoriq_core_1 |qoriq qoriq_e500 |qoriq qoriq_e6500_32 |qoriq qoriq_e6500_64 |qoriq ss555 |ss555 t32mppc |t32mppc pghplus |tqm8xx tqm8xx_stk8xx |tqm8xx virtex |virtex virtex4 |virtex4 virtex5 |virtex5 riscv |families:2 bsps:27 -----------------------------|--------------------- griscv |griscv grv32i |griscv grv32im |griscv grv32imac |griscv grv32imafdc |griscv frdme310arty |riscv rv32i |riscv rv32i_clang |riscv rv32iac |riscv rv32iac_clang |riscv rv32im |riscv rv32im_clang |riscv rv32imac |riscv rv32imac_clang |riscv rv32imafc |riscv rv32imafc_clang |riscv rv32imafd |riscv rv32imafd_clang |riscv rv32imafdc |riscv rv32imafdc_clang |riscv rv64imac |riscv rv64imac_medany |riscv rv64imafd |riscv rv64imafd_medany |riscv rv64imafdc |riscv rv64imafdc_clang |riscv rv64imafdc_medany |riscv sh |families:4 bsps:7 -----------------------------|--------------------- gensh1 |gensh1 gensh2 |gensh2 gensh4 |gensh4 simsh1 |shsim simsh2 |shsim simsh2e |shsim simsh4 |shsim sparc |families:3 bsps:8 -----------------------------|--------------------- erc32 |erc32 at697f |leon2 leon2 |leon2 gr712rc |leon3 gr740 |leon3 leon3 |leon3 ut699 |leon3 ut700 |leon3 sparc64 |families:2 bsps:2 -----------------------------|--------------------- niagara |niagara usiii |usiii v850 |families:1 bsps:6 -----------------------------|--------------------- v850e1sim |gdbv850sim v850e2sim |gdbv850sim v850e2v3sim |gdbv850sim v850esim |gdbv850sim v850essim |gdbv850sim v850sim |gdbv850sim x86_64 |families:1 bsps:1 -----------------------------|--------------------- amd64 |amd64