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/*
* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
* Scott McNutt <smcnutt@psyent.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_NIOS2_SYSTEM_H_
#define __ASM_NIOS2_SYSTEM_H_
#define local_irq_enable() __asm__ __volatile__ ( \
"rdctl r8, status\n" \
"ori r8, r8, 1\n" \
"wrctl status, r8\n" \
: : : "r8")
#define local_irq_disable() __asm__ __volatile__ ( \
"rdctl r8, status\n" \
"andi r8, r8, 0xfffe\n" \
"wrctl status, r8\n" \
: : : "r8")
#define local_save_flags(x) __asm__ __volatile__ ( \
"rdctl r8, status\n" \
"mov %0, r8\n" \
: "=r" (x) : : "r8", "memory")
#define local_irq_restore(x) __asm__ __volatile__ ( \
"mov r8, %0\n" \
"wrctl status, r8\n" \
: : "r" (x) : "r8", "memory")
/* For spinlocks etc */
#define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } \
while (0)
#define irqs_disabled() \
({ \
unsigned long flags; \
local_save_flags(flags); \
((flags & NIOS2_STATUS_PIE_MSK) == 0x0); \
})
/* indirect call to go beyond 256MB limitation of toolchain */
#define nios2_callr(addr) __asm__ __volatile__ ( \
"callr %0" \
: : "r" (addr))
#endif /* __ASM_NIOS2_SYSTEM_H */
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