Date: Mon, 03 Feb 2020 11:42:30 +0000 From: Mark Corbin <mark@...sco.co.uk> To: musl@...ts.openwall.com Subject: REG_SP Definition for RISC-V Hello I'm trying to fix a build issue with libsigsegv  for RISC-V when compiling against musl 1.1.24 (under Buildroot). The build fails because the array index 'REG_SP' (for indexing into uc_mcontext.__gregs) is not defined in arch/riscv64/bits/signal.h. This constant is defined by glibc in sysdeps/unix/sysv/linux/riscv/sys/ucontext.h I was wondering whether the appropriate fix is just to add '#define REG_SP 2' to the top of arch/riscv64/bits/signal.h ? (Note that there is a REG_SP definition in arch/riscv64/bits/reg.h which isn't being included). Alternatively I could submit a patch to libsigsegv to modify the index into the '__gregs' array to be '2' rather than 'REG_SP', however there could be other glibc compatible RISC-V packages that make use of the 'REG_SP' definition. I'm happy to generate and submit any patches as appropriate. Thanks Mark Corbin  http://savannah.gnu.org/projects/libsigsegv/
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