1 files changed, 131 insertions, 0 deletions

diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
new file mode 100644
index 000000000000..b01d5e7e3d5a
--- /dev/null
+++ b/arch/arm/include/asm/processor.h
@@ -0,0 +1,131 @@
+/*
+ *  arch/arm/include/asm/processor.h
+ *
+ *  Copyright (C) 1995-1999 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.
+ */
+
+#ifndef __ASM_ARM_PROCESSOR_H
+#define __ASM_ARM_PROCESSOR_H
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l;})
+
+#ifdef __KERNEL__
+
+#include <asm/ptrace.h>
+#include <asm/types.h>
+
+#ifdef __KERNEL__
+#define STACK_TOP       ((current->personality == PER_LINUX_32BIT) ? \
+                         TASK_SIZE : TASK_SIZE_26)
+#define STACK_TOP_MAX   TASK_SIZE
+#endif
+
+union debug_insn {
+        u32     arm;
+        u16     thumb;
+};
+
+struct debug_entry {
+        u32                     address;
+        union debug_insn        insn;
+};
+
+struct debug_info {
+        int                     nsaved;
+        struct debug_entry      bp[2];
+};
+
+struct thread_struct {
+                                                        /* fault info     */
+        unsigned long           address;
+        unsigned long           trap_no;
+        unsigned long           error_code;
+                                                        /* debugging      */
+        struct debug_info       debug;
+};
+
+#define INIT_THREAD  {  }
+
+#ifdef CONFIG_MMU
+#define nommu_start_thread(regs) do { } while (0)
+#else
+#define nommu_start_thread(regs) regs->ARM_r10 = current->mm->start_data
+#endif
+
+#define start_thread(regs,pc,sp)                                        \
+({                                                                      \
+        unsigned long *stack = (unsigned long *)sp;                     \
+        set_fs(USER_DS);                                                \
+        memzero(regs->uregs, sizeof(regs->uregs));                      \
+        if (current->personality & ADDR_LIMIT_32BIT)                    \
+                regs->ARM_cpsr = USR_MODE;                              \
+        else                                                            \
+                regs->ARM_cpsr = USR26_MODE;                            \
+        if (elf_hwcap & HWCAP_THUMB && pc & 1)                          \
+                regs->ARM_cpsr |= PSR_T_BIT;                            \
+        regs->ARM_pc = pc & ~1;         /* pc */                        \
+        regs->ARM_sp = sp;              /* sp */                        \
+        regs->ARM_r2 = stack[2];        /* r2 (envp) */                 \
+        regs->ARM_r1 = stack[1];        /* r1 (argv) */                 \
+        regs->ARM_r0 = stack[0];        /* r0 (argc) */                 \
+        nommu_start_thread(regs);                                       \
+})
+
+/* Forward declaration, a strange C thing */
+struct task_struct;
+
+/* Free all resources held by a thread. */
+extern void release_thread(struct task_struct *);
+
+/* Prepare to copy thread state - unlazy all lazy status */
+#define prepare_to_copy(tsk)    do { } while (0)
+
+unsigned long get_wchan(struct task_struct *p);
+
+#define cpu_relax()                     barrier()
+
+/*
+ * Create a new kernel thread
+ */
+extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
+
+#define task_pt_regs(p) \
+        ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1)
+
+#define KSTK_EIP(tsk)   task_pt_regs(tsk)->ARM_pc
+#define KSTK_ESP(tsk)   task_pt_regs(tsk)->ARM_sp
+
+/*
+ * Prefetching support - only ARMv5.
+ */
+#if __LINUX_ARM_ARCH__ >= 5
+
+#define ARCH_HAS_PREFETCH
+static inline void prefetch(const void *ptr)
+{
+        __asm__ __volatile__(
+                "pld\t%0"
+                :
+                : "o" (*(char *)ptr)
+                : "cc");
+}
+
+#define ARCH_HAS_PREFETCHW
+#define prefetchw(ptr)  prefetch(ptr)
+
+#define ARCH_HAS_SPINLOCK_PREFETCH
+#define spin_lock_prefetch(x) do { } while (0)
+
+#endif
+
+#endif
+
+#endif /* __ASM_ARM_PROCESSOR_H */