commit 9cf92718e9f2e82c7d1f2a896b5c93b01f1ad073
from: Richard Miller <millerresearch@gmail.com>
via: Russ Cox <rsc@swtch.com>
date: Wed May 18 17:20:56 2011 UTC

arm: build fixes

Get p9p to build cleanly for ARM - based on suggestions from rsc and eekee, plus a final tweak from me.  Tested (a bit) on sheevaplug (ubuntu jaunty), Nokia N800 (maemo 4) and Nokia N900 (maemo 5).

R=rsc
CC=plan9port.codebot
http://codereview.appspot.com/4524056

commit - c1f950fc32d55890e0b914d9368657b23122dd59
commit + 9cf92718e9f2e82c7d1f2a896b5c93b01f1ad073
blob - /dev/null
blob + 43a4662b3107e2118f6f6f4d82324d66dbec14e3 (mode 644)
--- /dev/null
+++ src/libmp/arm/mkfile
@@ -0,0 +1,4 @@
+all:
+
+%:V:
+	# nothing to see here
blob - /dev/null
blob + 43a4662b3107e2118f6f6f4d82324d66dbec14e3 (mode 644)
--- /dev/null
+++ src/libsec/arm/mkfile
@@ -0,0 +1,4 @@
+all:
+
+%:V:
+	# nothing to see here
blob - 433588002ab9afaf25259ddf581fc87551ef39a4
blob + 907fb0c3fd4b29e0279c5de34eb0e374b2514d97
--- src/libthread/Linux-arm-swapcontext.c
+++ src/libthread/Linux-arm-swapcontext.c
@@ -3,24 +3,24 @@
 void
 makecontext(ucontext_t *uc, void (*fn)(void), int argc, ...)
 {
-        int i, *sp;
-        va_list arg;
-        
-        sp = (int*)uc->uc_stack.ss_sp+uc->uc_stack.ss_size/4;
-        va_start(arg, argc);
-        for(i=0; i<4 && i<argc; i++)
-                uc->uc_mcontext.gregs[i] = va_arg(arg, uint);
-        va_end(arg);
-        uc->uc_mcontext.gregs[13] = (uint)sp;
-        uc->uc_mcontext.gregs[14] = (uint)fn;
+	int i, *sp;
+	va_list arg;
+
+	sp = (int*)uc->uc_stack.ss_sp+uc->uc_stack.ss_size/4;
+	va_start(arg, argc);
+	for(i=0; i<4 && i<argc; i++)
+		(&uc->uc_mcontext.arm_r0)[i] = va_arg(arg, uint);
+	va_end(arg);
+	uc->uc_mcontext.arm_sp = (uint)sp;
+	uc->uc_mcontext.arm_lr = (uint)fn;
 }
 
 int
 swapcontext(ucontext_t *oucp, const ucontext_t *ucp)
 {
-        if(getcontext(oucp) == 0)
-                setcontext(ucp);
-        return 0;
+	if(getcontext(oucp) == 0)
+		setcontext(ucp);
+	return 0;
 }
 
 
blob - 270294713673b2355f590eed14de4e0fce166f94
blob + 32600a7147f767f2bff6080218f39b0b4d1ea209
--- src/libthread/sysofiles.sh
+++ src/libthread/sysofiles.sh
@@ -4,9 +4,6 @@ test -f $PLAN9/config && . $PLAN9/config
 
 tag="$OBJTYPE-$SYSNAME-${SYSVERSION:-`uname -r`}-${CC9:-cc}"
 case "$tag" in
-arm-Linux-*)
-	echo ${SYSNAME}-${OBJTYPE}-asm.o $SYSNAME.o
-	;;	
 *-Linux-2.6.*)
 	echo pthread.o
 	;;
blob - f5c44f63292e8ba30743df9e57362f07ee556b69
blob + 8b931ae7597a396888c95c67ef632ce24f0bf5af
--- src/libthread/threadimpl.h
+++ src/libthread/threadimpl.h
@@ -73,10 +73,10 @@ but surely the latter would be defined(__sparc__).
 */
 
 #if defined(__arm__)
-int mygetmcontext(mcontext_t*);
-void mysetmcontext(const mcontext_t*);
-#define	setcontext(u)	mysetmcontext(&(u)->uc_mcontext)
-#define	getcontext(u)	mygetmcontext(&(u)->uc_mcontext)
+int mygetmcontext(ulong*);
+void mysetmcontext(const ulong*);
+#define	setcontext(u)	mysetmcontext(&(u)->uc_mcontext.arm_r0)
+#define	getcontext(u)	mygetmcontext(&(u)->uc_mcontext.arm_r0)
 #endif