<machine/signal.h>

. use netbsd sigframe, sigcontext struct
	. netbsd sigframe *contains* sigcontext; use that directly
	  in kernel sigsend
	. drop two fields from minix x86 stackframe.h (process context)
	  that were unused, retadr and st

use in-sigframe sigcontext

Change-Id: Ib59d699596dc3a78163dee59f19730482fdddf11

lib/libc/arch/arm/sys-minix/__sigreturn.S

@@ -5,6 +5,5 @@
 
 IMPORT(_sigreturn)
 ENTRY(__sigreturn)
-	add	sp, sp, #24	/* make sp point to sigframe.sf_scpcopy */
-	pop	{r0}		/* load it into r0 as parameter */
+	pop	{r0}		/* load sigframe.sf_scp into r0 as parameter */
 	b	_C_LABEL(_sigreturn)	/* _sigreturn(struct sigcontext *sf_scpcopy) */

lib/libc/sys-minix/sigprocmask.c

@@ -1,6 +1,7 @@
 #include <sys/cdefs.h>
-#include <sys/signal.h>
+#include <sys/types.h>
 #include <sys/sigtypes.h>
+#include <sys/signal.h>
 #include <lib.h>
 #include <string.h>
 #include "namespace.h"

lib/libc/sys-minix/sigreturn.c

@@ -4,6 +4,7 @@
 #include <lib.h>
 
 #include <string.h>
+#include <assert.h>
 #include <signal.h>
 #include <string.h>
 #include <sys/signal.h>

lib/libc/sys-minix/statvfs.c

@@ -2,6 +2,7 @@
 #include <lib.h>
 #include "namespace.h"
 
+#include <sys/types.h>
 #include <sys/statvfs.h>
 #include <string.h>
 

lib/libvassert/vassert.c

@@ -7,6 +7,7 @@
 #include <minix/ipc.h>
 #include <minix/com.h>
 #include <minix/syslib.h>
+#include <machine/stackframe.h>
 #include "vassert.h"
 
 VAssert_StateWrapper vassert_state ALIGNED(VASSERT_PAGE_SIZE);