Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-arm26/uaccess-asm.h b/include/asm-arm26/uaccess-asm.h
new file mode 100644
index 0000000..19f798e
--- /dev/null
+++ b/include/asm-arm26/uaccess-asm.h
@@ -0,0 +1,153 @@
+/*
+ * linux/include/asm-arm/proc-armo/uaccess.h
+ *
+ * Copyright (C) 1996 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * The fs functions are implemented on the ARM2 and ARM3 architectures
+ * manually.
+ * Use *_user functions to access user memory with faulting behaving
+ * as though the user is accessing the memory.
+ * Use set_fs(get_ds()) and then the *_user functions to allow them to
+ * access kernel memory.
+ */
+
+/*
+ * These are the values used to represent the user `fs' and the kernel `ds'
+ * FIXME - the KERNEL_DS should end at 0x03000000 but we want to access ROM at
+ * 0x03400000. ideally we want to forbid access to the IO space inbetween.
+ */
+#define KERNEL_DS 0x03FFFFFF
+#define USER_DS 0x02000000
+
+extern uaccess_t uaccess_user, uaccess_kernel;
+
+static inline void set_fs (mm_segment_t fs)
+{
+ current_thread_info()->addr_limit = fs;
+ current->thread.uaccess = (fs == USER_DS ? &uaccess_user : &uaccess_kernel);
+}
+
+#define __range_ok(addr,size) ({ \
+ unsigned long flag, sum; \
+ __asm__ __volatile__("subs %1, %0, %3; cmpcs %1, %2; movcs %0, #0" \
+ : "=&r" (flag), "=&r" (sum) \
+ : "r" (addr), "Ir" (size), "0" (current_thread_info()->addr_limit) \
+ : "cc"); \
+ flag; })
+
+#define __addr_ok(addr) ({ \
+ unsigned long flag; \
+ __asm__ __volatile__("cmp %2, %0; movlo %0, #0" \
+ : "=&r" (flag) \
+ : "0" (current_thread_info()->addr_limit), "r" (addr) \
+ : "cc"); \
+ (flag == 0); })
+
+#define __put_user_asm_byte(x,addr,err) \
+ __asm__ __volatile__( \
+ " mov r0, %1\n" \
+ " mov r1, %2\n" \
+ " mov r2, %0\n" \
+ " mov lr, pc\n" \
+ " mov pc, %3\n" \
+ " mov %0, r2\n" \
+ : "=r" (err) \
+ : "r" (x), "r" (addr), "r" (current->thread.uaccess->put_byte), \
+ "0" (err) \
+ : "r0", "r1", "r2", "lr")
+
+#define __put_user_asm_half(x,addr,err) \
+ __asm__ __volatile__( \
+ " mov r0, %1\n" \
+ " mov r1, %2\n" \
+ " mov r2, %0\n" \
+ " mov lr, pc\n" \
+ " mov pc, %3\n" \
+ " mov %0, r2\n" \
+ : "=r" (err) \
+ : "r" (x), "r" (addr), "r" (current->thread.uaccess->put_half), \
+ "0" (err) \
+ : "r0", "r1", "r2", "lr")
+
+#define __put_user_asm_word(x,addr,err) \
+ __asm__ __volatile__( \
+ " mov r0, %1\n" \
+ " mov r1, %2\n" \
+ " mov r2, %0\n" \
+ " mov lr, pc\n" \
+ " mov pc, %3\n" \
+ " mov %0, r2\n" \
+ : "=r" (err) \
+ : "r" (x), "r" (addr), "r" (current->thread.uaccess->put_word), \
+ "0" (err) \
+ : "r0", "r1", "r2", "lr")
+
+#define __put_user_asm_dword(x,addr,err) \
+ __asm__ __volatile__( \
+ " mov r0, %1\n" \
+ " mov r1, %2\n" \
+ " mov r2, %0\n" \
+ " mov lr, pc\n" \
+ " mov pc, %3\n" \
+ " mov %0, r2\n" \
+ : "=r" (err) \
+ : "r" (x), "r" (addr), "r" (current->thread.uaccess->put_dword), \
+ "0" (err) \
+ : "r0", "r1", "r2", "lr")
+
+#define __get_user_asm_byte(x,addr,err) \
+ __asm__ __volatile__( \
+ " mov r0, %2\n" \
+ " mov r1, %0\n" \
+ " mov lr, pc\n" \
+ " mov pc, %3\n" \
+ " mov %0, r1\n" \
+ " mov %1, r0\n" \
+ : "=r" (err), "=r" (x) \
+ : "r" (addr), "r" (current->thread.uaccess->get_byte), "0" (err) \
+ : "r0", "r1", "r2", "lr")
+
+#define __get_user_asm_half(x,addr,err) \
+ __asm__ __volatile__( \
+ " mov r0, %2\n" \
+ " mov r1, %0\n" \
+ " mov lr, pc\n" \
+ " mov pc, %3\n" \
+ " mov %0, r1\n" \
+ " mov %1, r0\n" \
+ : "=r" (err), "=r" (x) \
+ : "r" (addr), "r" (current->thread.uaccess->get_half), "0" (err) \
+ : "r0", "r1", "r2", "lr")
+
+#define __get_user_asm_word(x,addr,err) \
+ __asm__ __volatile__( \
+ " mov r0, %2\n" \
+ " mov r1, %0\n" \
+ " mov lr, pc\n" \
+ " mov pc, %3\n" \
+ " mov %0, r1\n" \
+ " mov %1, r0\n" \
+ : "=r" (err), "=r" (x) \
+ : "r" (addr), "r" (current->thread.uaccess->get_word), "0" (err) \
+ : "r0", "r1", "r2", "lr")
+
+#define __do_copy_from_user(to,from,n) \
+ (n) = current->thread.uaccess->copy_from_user((to),(from),(n))
+
+#define __do_copy_to_user(to,from,n) \
+ (n) = current->thread.uaccess->copy_to_user((to),(from),(n))
+
+#define __do_clear_user(addr,sz) \
+ (sz) = current->thread.uaccess->clear_user((addr),(sz))
+
+#define __do_strncpy_from_user(dst,src,count,res) \
+ (res) = current->thread.uaccess->strncpy_from_user(dst,src,count)
+
+#define __do_strnlen_user(s,n,res) \
+ (res) = current->thread.uaccess->strnlen_user(s,n)