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