| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* |
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| 3 | * SHcompact irqflags support |
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| 4 | * |
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| 5 | * Copyright (C) 2006 - 2009 Paul Mundt |
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| 6 | */ |
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| 7 | #include <linux/irqflags.h> |
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| 8 | #include <linux/module.h> |
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| 9 | |
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| 10 | void notrace arch_local_irq_restore(unsigned long flags) |
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| 11 | { |
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| 12 | unsigned long __dummy0, __dummy1; |
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| 13 | |
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| 14 | if (flags == ARCH_IRQ_DISABLED) { |
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| 15 | __asm__ __volatile__ ( |
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| 16 | "stc sr, %0\n\t" |
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| 17 | "or #0xf0, %0\n\t" |
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| 18 | "ldc %0, sr\n\t" |
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| 19 | : "=&z" (__dummy0) |
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| 20 | : /* no inputs */ |
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| 21 | : "memory" |
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| 22 | ); |
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| 23 | } else { |
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| 24 | __asm__ __volatile__ ( |
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| 25 | "stc sr, %0\n\t" |
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| 26 | "and %1, %0\n\t" |
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| 27 | #ifdef CONFIG_CPU_HAS_SR_RB |
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| 28 | "stc r6_bank, %1\n\t" |
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| 29 | "or %1, %0\n\t" |
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| 30 | #endif |
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| 31 | "ldc %0, sr\n\t" |
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| 32 | : "=&r" (__dummy0), "=r" (__dummy1) |
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| 33 | : "1" (~ARCH_IRQ_DISABLED) |
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| 34 | : "memory" |
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| 35 | ); |
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| 36 | } |
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| 37 | } |
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| 38 | EXPORT_SYMBOL(arch_local_irq_restore); |
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| 39 | |
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| 40 | unsigned long notrace arch_local_save_flags(void) |
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| 41 | { |
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| 42 | unsigned long flags; |
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| 43 | |
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| 44 | __asm__ __volatile__ ( |
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| 45 | "stc sr, %0\n\t" |
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| 46 | "and #0xf0, %0\n\t" |
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| 47 | : "=&z" (flags) |
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| 48 | : /* no inputs */ |
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| 49 | : "memory" |
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| 50 | ); |
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| 51 | |
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| 52 | return flags; |
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| 53 | } |
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| 54 | EXPORT_SYMBOL(arch_local_save_flags); |
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| 55 | |
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