From 41b3e8b9893a8561af7e85ca98444bc284b4013d Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Sun, 19 Jan 2020 22:39:22 -0500
Subject: libthread: use consistent stack calculation code in makecontext

Also reduce duplication: makecontext is per-arch not per-os-arch.

May fix #353.
---
 src/libthread/sysofiles.sh | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

(limited to 'src/libthread/sysofiles.sh')

diff --git a/src/libthread/sysofiles.sh b/src/libthread/sysofiles.sh
index 9a7301a8..8a65d0f6 100644
--- a/src/libthread/sysofiles.sh
+++ b/src/libthread/sysofiles.sh
@@ -7,24 +7,37 @@ NetBSD)
 	echo ${SYSNAME}-${OBJTYPE}-asm.o $SYSNAME.o stkmalloc.o
 	;;
 OpenBSD)
-	echo ${SYSNAME}-${OBJTYPE}-asm.o ${SYSNAME}-${OBJTYPE}.o pthread.o stkmmap.o
+	echo ${SYSNAME}-${OBJTYPE}-asm.o pthread.o stkmmap.o
 	;;
 *)
 	echo pthread.o stkmalloc.o
 esac
 
+# Various libc don't supply swapcontext, makecontext, so we do.
 case "$OBJTYPE-$SYSNAME" in
-sparc64-Linux)
-	# Debian glibc doesn't supply swapcontext, makecontext
-	# so we supply our own copy from the latest glibc.
-	echo Linux-sparc64-context.o Linux-sparc64-swapcontext.o
+386-OpenBSD)
+	echo 386-ucontext.o
 	;;
 arm-Linux)
-	# ARM doesn't supply them either.
-	echo Linux-arm-context.o Linux-arm-swapcontext.o
+	echo arm-ucontext.o
+	echo Linux-arm-context.o # setcontext, getcontext
+	;;
+arm-NetBSD)
+	echo arm-ucontext.o
+	;;
+power-OpenBSD)
+	echo power-ucontext.o
+	;;
+sparc64-Linux)
+	echo sparc64-ucontext.o
+	echo Linux-sparc64-swapcontext.o # setcontext, getcontext
 	;;
 x86_64-Darwin)
-	echo Darwin-x86_64-asm.o Darwin-x86_64-swapcontext.o
+	echo x86_64-ucontext.o
+	echo Darwin-x86_64-asm.o # setcontext, getcontext
+	;;
+x86_64-OpenBSD)
+	echo x86_64-ucontext.o
 	;;
 esac
 
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