From f305dffb85432d58fd3bc3ce8d78371e652dd314 Mon Sep 17 00:00:00 2001 From: rsc Date: Mon, 13 Oct 2003 17:18:52 +0000 Subject: Distribution notes. --- PORTING | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 PORTING (limited to 'PORTING') diff --git a/PORTING b/PORTING new file mode 100644 index 00000000..ddb94b99 --- /dev/null +++ b/PORTING @@ -0,0 +1,17 @@ +[Need to write better notes.] + +Look for files named *386* or *FreeBSD* and you'll see what +you need to implement for your architecture of choice. + +The hardest thing is probably the assembly routines: +src/lib9/tas-$SYSTYPE.s and src/libthread/asm-$SYSTYPE-$OBJTYPE.s. +The former is a test and set used to implement shared-memory +spin locks. The latter is a stripped down setjmp and longjmp +used to implement stack switching in the thread library. +Also, src/libthread/$OBJTYPE.c needs to know how to set up a stack +frame for the given object type. + +If you're only interested in mk and sam, you don't need to +write any assembly to do a port. Samterm requires everything +though, since it uses libthread. + -- cgit v1.2.3