text: /*
   * Copyright (c) 2003-2004 Jakub Jermar
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * - Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   * - Redistributions in binary form must reproduce the above copyright
   *   notice, this list of conditions and the following disclaimer in the
   *   documentation and/or other materials provided with the distribution.
   * - The name of the author may not be used to endorse or promote products
   *   derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  /** @addtogroup mips32
   * @{
   */
  /** @file
   */
  
  #ifndef KERN_mips32_ASM_H_
  #define KERN_mips32_ASM_H_
  
  #include <typedefs.h>
  #include <config.h>
  #include <trace.h>
  
  NO_TRACE static inline void cpu_sleep(void)
  {
  	asm volatile ("wait");
  }
  
  /** Return base address of current stack
   *
   * Return the base address of the current stack.
   * The stack is assumed to be STACK_SIZE bytes long.
   * The stack must start on page boundary.
   *
   */
  NO_TRACE static inline uintptr_t get_stack_base(void)
  {
  	uintptr_t base;
  	
  	asm volatile (
  		"and %[base], $29, %[mask]\n"
  		: [base] "=r" (base)
  		: [mask] "r" (~(STACK_SIZE - 1))
  	);
  	
  	return base;
  }
  
  NO_TRACE static inline void pio_write_8(ioport8_t *port, uint8_t v)
  {
  	*port = v;
  }
  
  NO_TRACE static inline void pio_write_16(ioport16_t *port, uint16_t v)
  {
  	*port = v;
  }
  
  NO_TRACE static inline void pio_write_32(ioport32_t *port, uint32_t v)
  {
  	*port = v;
  }
  
  NO_TRACE static inline uint8_t pio_read_8(ioport8_t *port)
  {
  	return *port;
  }
  
  NO_TRACE static inline uint16_t pio_read_16(ioport16_t *port)
  {
  	return *port;
  }
  
  NO_TRACE static inline uint32_t pio_read_32(ioport32_t *port)
  {
  	return *port;
  }
  
  extern void cpu_halt(void) __attribute__((noreturn));
  extern void asm_delay_loop(uint32_t);
  
  extern ipl_t interrupts_disable(void);
  extern ipl_t interrupts_enable(void);
  extern void interrupts_restore(ipl_t);
  extern ipl_t interrupts_read(void);
  extern bool interrupts_disabled(void);
  
  #endif
  
  /** @}
   */
  