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