This page gives an overview of upstream projects. If you miss information or find mistakes, please edit.

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ABIs and APIs

There are the following defined RISC-V ABIs:

• 32-bit
  • ILP32, ILP32F, ILP32D, ILP32E
• 64-bit
  • LP64, LP64F, LP64D, LP64Q

There are two calling conventions for GP registers in the RISC-V ecosystem:

• Standard ABI (sometime also called UABI): https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#integer-register-convention-
• EABI (targeting embedded systems): https://github.com/riscv/riscv-eabi-spec/blob/master/EABI.adoc

The RISC-V ELF psABI can be found here: https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md

An overview of other RISC-V ABI/API related documents can be found here: https://github.com/riscv/riscv-elf-psabi-doc/blob/master/README.md

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Binutils

The GNU Binutils are a collection of binary tools (GNU linker, GNU assembler, many other excellent tools such as gprof).

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