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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * psr.h: This file holds the macros for masking off various parts of
- * the processor status register on the Sparc. This is valid
- * for Version 8. On the V9 this is renamed to the PSTATE
- * register and its members are accessed as fields like
- * PSTATE.PRIV for the current CPU privilege level.
- *
- * Copyright (C) 1994 David S. Miller ([email protected])
- */
- #ifndef __LINUX_SPARC_PSR_H
- #define __LINUX_SPARC_PSR_H
- #include <uapi/asm/psr.h>
- #ifndef __ASSEMBLY__
- /* Get the %psr register. */
- static inline unsigned int get_psr(void)
- {
- unsigned int psr;
- __asm__ __volatile__(
- "rd %%psr, %0\n\t"
- "nop\n\t"
- "nop\n\t"
- "nop\n\t"
- : "=r" (psr)
- : /* no inputs */
- : "memory");
- return psr;
- }
- static inline void put_psr(unsigned int new_psr)
- {
- __asm__ __volatile__(
- "wr %0, 0x0, %%psr\n\t"
- "nop\n\t"
- "nop\n\t"
- "nop\n\t"
- : /* no outputs */
- : "r" (new_psr)
- : "memory", "cc");
- }
- /* Get the %fsr register. Be careful, make sure the floating point
- * enable bit is set in the %psr when you execute this or you will
- * incur a trap.
- */
- extern unsigned int fsr_storage;
- static inline unsigned int get_fsr(void)
- {
- unsigned int fsr = 0;
- __asm__ __volatile__(
- "st %%fsr, %1\n\t"
- "ld %1, %0\n\t"
- : "=r" (fsr)
- : "m" (fsr_storage));
- return fsr;
- }
- #endif /* !(__ASSEMBLY__) */
- #endif /* !(__LINUX_SPARC_PSR_H) */
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