From 83a109c2a7abb320517313677ea7cd7c5d6880ea Mon Sep 17 00:00:00 2001 From: Ariadne Conill Date: Sun, 6 Dec 2020 03:54:19 -0700 Subject: [PATCH] update README with status table --- README.md | 33 +++++++++++++++++---------------- 1 file changed, 17 insertions(+), 16 deletions(-) diff --git a/README.md b/README.md index fbb0333..98e9fca 100644 --- a/README.md +++ b/README.md @@ -6,27 +6,28 @@ it faithfully follows the kernel process ABI when doing context swaps. Notably, when combined with `gcompat`, it provides a fully compatible implementation of the ucontext functions that are ABI compatible with glibc. +Since version 0.13, for some architectures, you can deploy to bare metal using newlib via the +`FREESTANDING=yes` make option. Systems which use a syscall cannot work this way. The table +below shows which architecture ports have been adapted to build with `FREESTANDING=yes`. + ## supported architectures Adding support for new architectures is easy, but you need to know assembly language to do it. -Right now these archs are supported and should work on bare metal: - - * x86 - * x86_64 - * armv6+ (`arm`) - * aarch64 - * s390x - * mips (O32 ABI only) - * mips64 (N32/N64 ABI only, like Alpine, only N64 ABI has been tested) - * riscv64 - * m68k - -These archs require kernel assistance and use a syscall: - - * ppc - * ppc64 (ELFv2 ABI spec only, ELFv1 not supported) +| Architecture | Works on musl | Syscall | Supports FREESTANDING | +|--------------|---------------|---------|-----------------------| +| aarch64 | ✓ | | | +| arm | ✓ | | | +| m68k | ✓ | | ✓ | +| mips | ✓ | | | +| mips64 | ✓ | | | +| ppc | ✓ | ✓ | | +| ppc64 | ✓ | ✓ | | +| riscv64 | ✓ | | | +| s390x | ✓ | | | +| x86 | ✓ | | | +| x86_64 | ✓ | | ✓ | ## building