4 files changed, 51 insertions, 7 deletions
diff --git a/arch/um/kernel/skas/include/mm_id.h b/arch/um/kernel/skas/include/mm_id.h
new file mode 100644
index 0000000..48dd098
--- /dev/null
+++ b/arch/um/kernel/skas/include/mm_id.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2005 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __MM_ID_H
+#define __MM_ID_H
+
+struct mm_id {
+	union {
+		int mm_fd;
+		int pid;
+	} u;
+	unsigned long stack;
+};
+
+#endif
diff --git a/arch/um/kernel/skas/include/mmu-skas.h b/arch/um/kernel/skas/include/mmu-skas.h
index 4cd60d7..278b72f 100644
--- a/arch/um/kernel/skas/include/mmu-skas.h
+++ b/arch/um/kernel/skas/include/mmu-skas.h
@@ -6,10 +6,15 @@
 #ifndef __SKAS_MMU_H
 #define __SKAS_MMU_H
 
+#include "mm_id.h"
+
 struct mmu_context_skas {
-	int mm_fd;
+	struct mm_id id;
+        unsigned long last_page_table;
 };
 
+extern void switch_mm_skas(struct mm_id * mm_idp);
+
 #endif
 
 /*
diff --git a/arch/um/kernel/skas/include/skas.h b/arch/um/kernel/skas/include/skas.h
index 96b51db..d983ea8 100644
--- a/arch/um/kernel/skas/include/skas.h
+++ b/arch/um/kernel/skas/include/skas.h
@@ -6,9 +6,11 @@
 #ifndef __SKAS_H
 #define __SKAS_H
 
+#include "mm_id.h"
 #include "sysdep/ptrace.h"
 
 extern int userspace_pid[];
+extern int proc_mm, ptrace_faultinfo;
 
 extern void switch_threads(void *me, void *next);
 extern void thread_wait(void *sw, void *fb);
@@ -22,16 +24,18 @@ extern void new_thread_proc(void *stack, void (*handler)(int sig));
 extern void remove_sigstack(void);
 extern void new_thread_handler(int sig);
 extern void handle_syscall(union uml_pt_regs *regs);
-extern void map(int fd, unsigned long virt, unsigned long len, int r, int w,
-		int x, int phys_fd, unsigned long long offset);
-extern int unmap(int fd, void *addr, unsigned long len);
-extern int protect(int fd, unsigned long addr, unsigned long len, 
-		   int r, int w, int x);
+extern int map(struct mm_id * mm_idp, unsigned long virt, unsigned long len,
+               int r, int w, int x, int phys_fd, unsigned long long offset);
+extern int unmap(struct mm_id * mm_idp, void *addr, unsigned long len);
+extern int protect(struct mm_id * mm_idp, unsigned long addr,
+		   unsigned long len, int r, int w, int x);
 extern void user_signal(int sig, union uml_pt_regs *regs, int pid);
 extern int new_mm(int from);
-extern void start_userspace(int cpu);
+extern int start_userspace(unsigned long stub_stack);
+extern int copy_context_skas0(unsigned long stack, int pid);
 extern void get_skas_faultinfo(int pid, struct faultinfo * fi);
 extern long execute_syscall_skas(void *r);
+extern unsigned long current_stub_stack(void);
 
 #endif
 
diff --git a/arch/um/kernel/skas/include/stub-data.h b/arch/um/kernel/skas/include/stub-data.h
new file mode 100644
index 0000000..f6ed92c
--- /dev/null
+++ b/arch/um/kernel/skas/include/stub-data.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2005 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __STUB_DATA_H
+#define __STUB_DATA_H
+
+#include <sys/time.h>
+
+struct stub_data {
+	long offset;
+	int fd;
+	struct itimerval timer;
+	long err;
+};
+
+#endif