58a6a696a0
This commit adds the support for the following new Zc* series compressed instruction extensions: Zca - Subset of the C extension without FP loads and stores Zcb - "Simple" instructions Zcd - Double-precision floating-point instructions Zcf - Single-precision floating-point instructions Zcmp - "Complex" instructions for embedded CPUs Zcmt - Table jump instructions for embedded CPUs With the introduction of the Zc* extensions, the C extension now implies the following Zc* extensions: * Zca, always * Zcf if F is specified (RV32 only) * Zcd if D is specified The Zc* extensions that are implied by the C extension are not specified in the GCC `-march` flag because they are redundant and can interfere with the resolution of the correct multi-lib for the selected architecture unless the the alternate mappings for the redundant forms are manually specified. All the implementation details in this commit are based on the Zc* v1.0.0 specification, which is the ratified version. Signed-off-by: Stephanos Ioannidis <root@stephanos.io> |
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| .. | ||
| app | ||
| bintools | ||
| compiler | ||
| emu | ||
| flash | ||
| ide | ||
| linker | ||
| linker_script | ||
| makefile_exports | ||
| modules | ||
| reports | ||
| sca | ||
| toolchain | ||
| usage | ||
| util | ||
| cfb.cmake | ||
| extra_flags.cmake | ||
| gcc-m-cpu.cmake | ||
| gcc-m-fpu.cmake | ||
| gen_version_h.cmake | ||
| kobj.cmake | ||
| llext-edk.cmake | ||
| mcuboot.cmake | ||
| package_helper.cmake | ||
| pristine.cmake | ||
| target_toolchain_flags.cmake | ||
| verify-toolchain.cmake | ||
| vif.cmake | ||
| yaml-filter.cmake | ||