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/*
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/*
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 * Copyright (c) 2003-2004 Jakub Jermar
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 * Copyright (c) 2007 Michal Kebrt
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 */
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 */
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/** @addtogroup arm32  
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/** @addtogroup arm32  
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 * @{
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 * @{
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 */
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 */
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/** @file
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/** @file
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 *  @brief Declarations of functions implemented in assembly.
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 */
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 */
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#ifndef KERN_arm32_ASM_H_
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#ifndef KERN_arm32_ASM_H_
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#define KERN_arm32_ASM_H_
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#define KERN_arm32_ASM_H_
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#include <arch/types.h>
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#include <arch/types.h>
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#include <arch/stack.h>
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#include <config.h>
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#include <arch/interrupt.h>
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/** No such instruction on ARM to sleep CPU. */
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static inline void cpu_sleep(void)
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static inline void cpu_sleep(void)
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{
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{
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    /* TODO */
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}
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}
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/** Return base address of current stack
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/** Return base address of current stack.
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 *
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 *
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 * Return the base address of the current stack.
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 * Return the base address of the current stack.
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 * The stack is assumed to be STACK_SIZE bytes long.
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 * The stack is assumed to be STACK_SIZE bytes long.
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 * The stack must start on page boundary.
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 * The stack must start on page boundary.
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 */
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 */
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static inline uintptr_t get_stack_base(void)
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static inline uintptr_t get_stack_base(void)
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{
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{
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    uintptr_t v;
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    asm volatile (
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        "and %0, sp, %1\n"
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    /* TODO */ 
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        : "=r" (v)
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        : "r" (~(STACK_SIZE - 1))
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    );
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    return NULL;
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    return v;
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}
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}
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extern void cpu_halt(void);
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extern void cpu_halt(void);
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extern void asm_delay_loop(uint32_t t);
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extern void asm_delay_loop(uint32_t t);
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extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
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extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
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    uintptr_t entry);
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    uintptr_t entry);
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extern ipl_t interrupts_disable(void);
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extern ipl_t interrupts_enable(void);
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extern void interrupts_restore(ipl_t ipl);
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extern ipl_t interrupts_read(void);
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#endif
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#endif
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/** @}
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/** @}
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 */
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 */