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| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/arch/nds32/include/asm/system.h | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/u-boot/arch/nds32/include/asm/system.h')
| -rw-r--r-- | roms/u-boot/arch/nds32/include/asm/system.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/roms/u-boot/arch/nds32/include/asm/system.h b/roms/u-boot/arch/nds32/include/asm/system.h new file mode 100644 index 00000000..007e66bd --- /dev/null +++ b/roms/u-boot/arch/nds32/include/asm/system.h @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2011 Andes Technology Corporation + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_NDS_SYSTEM_H +#define __ASM_NDS_SYSTEM_H + +/* + * Interrupt configuring macros. + */ + +extern int irq_flags; + +#define local_irq_enable() \ + __asm__ __volatile__ ( \ + "mfsr %0, $psw\n\t" \ + "andi %0, %0, 0x1\n\t" \ + "setgie.e\n\t" \ + : \ + : "r" (irq_flags) \ + ) + +#define local_irq_disable() \ + do { \ + int __tmp_dummy; \ + __asm__ __volatile__ ( \ + "mfsr %0, $psw\n\t" \ + "andi %0, %0, 0x1\n\t" \ + "setgie.d\n\t" \ + "dsb\n\t" \ + : "=r" (__tmp_dummy) \ + ); \ + } while (0) + +#define local_irq_save(x) \ + __asm__ __volatile__ ( \ + "mfsr %0, $psw\n\t" \ + "andi %0, %0, 0x1\n\t" \ + "setgie.d\n\t" \ + "dsb\n\t" \ + : "=&r" (x) \ + ) + +#define local_save_flags(x) \ + __asm__ __volatile__ ( \ + "mfsr %0, $psw\n\t" \ + "andi %0, %0, 0x1\n\t" \ + "setgie.e\n\t" \ + "setgie.d\n\t" \ + : "=r" (x) \ + ) + +#define irqs_enabled_from_flags(x) ((x) != 0x1f) + +#define local_irq_restore(x) \ + do { \ + if (irqs_enabled_from_flags(x)) \ + local_irq_enable(); \ + } while (0) + +/* + * Force strict CPU ordering. + */ +#define nop() asm volatile ("nop;\n\t" : : ) +#define mb() asm volatile ("" : : : "memory") +#define rmb() asm volatile ("" : : : "memory") +#define wmb() asm volatile ("" : : : "memory") + +#endif /* __ASM_NDS_SYSTEM_H */ |