6 files changed, 257 insertions, 0 deletions
diff --git a/arch/um/kernel/skas/include/mmu-skas.h b/arch/um/kernel/skas/include/mmu-skas.h
new file mode 100644
index 0000000..4cd60d7
--- /dev/null
+++ b/arch/um/kernel/skas/include/mmu-skas.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __SKAS_MMU_H
+#define __SKAS_MMU_H
+
+struct mmu_context_skas {
+	int mm_fd;
+};
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/kernel/skas/include/mode-skas.h b/arch/um/kernel/skas/include/mode-skas.h
new file mode 100644
index 0000000..c1e33bd
--- /dev/null
+++ b/arch/um/kernel/skas/include/mode-skas.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __MODE_SKAS_H__
+#define __MODE_SKAS_H__
+
+#include <sysdep/ptrace.h>
+
+extern unsigned long exec_regs[];
+extern unsigned long exec_fp_regs[];
+extern unsigned long exec_fpx_regs[];
+extern int have_fpx_regs;
+
+extern void user_time_init_skas(void);
+extern void sig_handler_common_skas(int sig, void *sc_ptr);
+extern void halt_skas(void);
+extern void reboot_skas(void);
+extern void kill_off_processes_skas(void);
+extern int is_skas_winch(int pid, int fd, void *data);
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/kernel/skas/include/mode_kern-skas.h b/arch/um/kernel/skas/include/mode_kern-skas.h
new file mode 100644
index 0000000..94c5649
--- /dev/null
+++ b/arch/um/kernel/skas/include/mode_kern-skas.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __SKAS_MODE_KERN_H__
+#define __SKAS_MODE_KERN_H__
+
+#include "linux/sched.h"
+#include "asm/page.h"
+#include "asm/ptrace.h"
+
+extern void flush_thread_skas(void);
+extern void *switch_to_skas(void *prev, void *next);
+extern void start_thread_skas(struct pt_regs *regs, unsigned long eip,
+			      unsigned long esp);
+extern int copy_thread_skas(int nr, unsigned long clone_flags,
+			    unsigned long sp, unsigned long stack_top,
+			    struct task_struct *p, struct pt_regs *regs);
+extern void release_thread_skas(struct task_struct *task);
+extern void exit_thread_skas(void);
+extern void initial_thread_cb_skas(void (*proc)(void *), void *arg);
+extern void init_idle_skas(void);
+extern void flush_tlb_kernel_range_skas(unsigned long start,
+					unsigned long end);
+extern void flush_tlb_kernel_vm_skas(void);
+extern void __flush_tlb_one_skas(unsigned long addr);
+extern void flush_tlb_range_skas(struct vm_area_struct *vma,
+				 unsigned long start, unsigned long end);
+extern void flush_tlb_mm_skas(struct mm_struct *mm);
+extern void force_flush_all_skas(void);
+extern long execute_syscall_skas(void *r);
+extern void before_mem_skas(unsigned long unused);
+extern unsigned long set_task_sizes_skas(int arg, unsigned long *host_size_out,
+					 unsigned long *task_size_out);
+extern int start_uml_skas(void);
+extern int external_pid_skas(struct task_struct *task);
+extern int thread_pid_skas(struct task_struct *task);
+
+#define kmem_end_skas (host_task_size - 1024 * 1024)
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/kernel/skas/include/proc_mm.h b/arch/um/kernel/skas/include/proc_mm.h
new file mode 100644
index 0000000..cce61a6
--- /dev/null
+++ b/arch/um/kernel/skas/include/proc_mm.h
@@ -0,0 +1,55 @@
+/* 
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __SKAS_PROC_MM_H
+#define __SKAS_PROC_MM_H
+
+#define MM_MMAP 54
+#define MM_MUNMAP 55
+#define MM_MPROTECT 56
+#define MM_COPY_SEGMENTS 57
+
+struct mm_mmap {
+	unsigned long addr;
+	unsigned long len;
+	unsigned long prot;
+	unsigned long flags;
+	unsigned long fd;
+	unsigned long offset;
+};
+
+struct mm_munmap {
+	unsigned long addr;
+	unsigned long len;	
+};
+
+struct mm_mprotect {
+	unsigned long addr;
+	unsigned long len;
+        unsigned int prot;
+};
+
+struct proc_mm_op {
+	int op;
+	union {
+		struct mm_mmap mmap;
+		struct mm_munmap munmap;
+	        struct mm_mprotect mprotect;
+		int copy_segments;
+	} u;
+};
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/kernel/skas/include/skas.h b/arch/um/kernel/skas/include/skas.h
new file mode 100644
index 0000000..f0702c2
--- /dev/null
+++ b/arch/um/kernel/skas/include/skas.h
@@ -0,0 +1,46 @@
+/* 
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __SKAS_H
+#define __SKAS_H
+
+#include "sysdep/ptrace.h"
+
+extern int userspace_pid[];
+
+extern void switch_threads(void *me, void *next);
+extern void thread_wait(void *sw, void *fb);
+extern void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr,
+                       void (*handler)(int));
+extern int start_idle_thread(void *stack, void *switch_buf_ptr, 
+			     void **fork_buf_ptr);
+extern int user_thread(unsigned long stack, int flags);
+extern void userspace(union uml_pt_regs *regs);
+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 void user_signal(int sig, union uml_pt_regs *regs);
+extern int new_mm(int from);
+extern void start_userspace(int cpu);
+extern long execute_syscall_skas(void *r);
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/kernel/skas/include/uaccess-skas.h b/arch/um/kernel/skas/include/uaccess-skas.h
new file mode 100644
index 0000000..11986c9
--- /dev/null
+++ b/arch/um/kernel/skas/include/uaccess-skas.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __SKAS_UACCESS_H
+#define __SKAS_UACCESS_H
+
+#include "asm/errno.h"
+#include "asm/fixmap.h"
+
+#define access_ok_skas(type, addr, size) \
+	((segment_eq(get_fs(), KERNEL_DS)) || \
+	 (((unsigned long) (addr) < TASK_SIZE) && \
+	  ((unsigned long) (addr) + (size) <= TASK_SIZE)) || \
+	 ((type == VERIFY_READ ) && \
+	  ((unsigned long) (addr) >= FIXADDR_USER_START) && \
+	  ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
+	  ((unsigned long) (addr) + (size) >= (unsigned long)(addr))))
+
+static inline int verify_area_skas(int type, const void * addr,
+				   unsigned long size)
+{
+	return(access_ok_skas(type, addr, size) ? 0 : -EFAULT);
+}
+
+extern int copy_from_user_skas(void *to, const void *from, int n);
+extern int copy_to_user_skas(void *to, const void *from, int n);
+extern int strncpy_from_user_skas(char *dst, const char *src, int count);
+extern int __clear_user_skas(void *mem, int len);
+extern int clear_user_skas(void *mem, int len);
+extern int strnlen_user_skas(const void *str, int len);
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */