21 lines
610 B
C
21 lines
610 B
C
/** xtensa_ops.h
|
|
*
|
|
* Special macros/etc which deal with Xtensa-specific architecture/CPU
|
|
* considerations.
|
|
*
|
|
* Part of esp-open-rtos
|
|
* Copyright (C) 2015 Superhouse Automation Pty Ltd
|
|
* BSD Licensed as described in the file LICENSE
|
|
*/
|
|
|
|
#ifndef _XTENSA_OPS_H
|
|
#define _XTENSA_OPS_H
|
|
|
|
// GCC macros for reading, writing, and exchanging Xtensa processor special
|
|
// registers:
|
|
|
|
#define RSR(var, reg) asm volatile ("rsr %0, " #reg : "=r" (var));
|
|
#define WSR(var, reg) asm volatile ("wsr %0, " #reg : : "r" (var));
|
|
#define XSR(var, reg) asm volatile ("xsr %0, " #reg : "+r" (var));
|
|
|
|
#endif /* _XTENSA_OPS_H */
|