124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
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/*
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* Copyright 2018, Jérôme Duval, jerome.duval@gmail.com.
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* Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
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* Copyright 2012, Alex Smith, alex@alex-smith.me.uk.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_ARCH_x86_CPUASM_H
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#define _KERNEL_ARCH_x86_CPUASM_H
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#define nop() __asm__ ("nop"::)
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#define x86_read_cr0() ({ \
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size_t _v; \
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__asm__("mov %%cr0,%0" : "=r" (_v)); \
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_v; \
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})
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#define x86_write_cr0(value) \
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__asm__("mov %0,%%cr0" : : "r" (value))
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#define x86_read_cr2() ({ \
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size_t _v; \
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__asm__("mov %%cr2,%0" : "=r" (_v)); \
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_v; \
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})
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#define x86_read_cr3() ({ \
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size_t _v; \
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__asm__("mov %%cr3,%0" : "=r" (_v)); \
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_v; \
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})
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#define x86_write_cr3(value) \
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__asm__("mov %0,%%cr3" : : "r" (value))
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#define x86_read_cr4() ({ \
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size_t _v; \
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__asm__("mov %%cr4,%0" : "=r" (_v)); \
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_v; \
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})
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#define x86_write_cr4(value) \
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__asm__("mov %0,%%cr4" : : "r" (value))
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#define x86_read_dr3() ({ \
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size_t _v; \
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__asm__("mov %%dr3,%0" : "=r" (_v)); \
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_v; \
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})
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#define x86_write_dr3(value) \
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__asm__("mov %0,%%dr3" : : "r" (value))
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#define invalidate_TLB(va) \
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__asm__("invlpg (%0)" : : "r" (va))
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#define wbinvd() \
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__asm__ volatile ("wbinvd" : : : "memory")
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#define set_ac() \
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__asm__ volatile (ASM_STAC : : : "memory")
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#define clear_ac() \
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__asm__ volatile (ASM_CLAC : : : "memory")
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#define xgetbv(reg) ({ \
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uint32 low, high; \
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__asm__ volatile ("xgetbv" : "=a" (low), "=d" (high), "c" (reg)); \
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(low | (uint64)high << 32); \
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})
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#define xsetbv(reg, value) { \
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uint32 low = value; uint32 high = value >> 32; \
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__asm__ volatile ("xsetbv" : : "a" (low), "d" (high), "c" (reg)); }
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#define out8(value,port) \
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__asm__ ("outb %%al,%%dx" : : "a" (value), "d" (port))
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#define out16(value,port) \
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__asm__ ("outw %%ax,%%dx" : : "a" (value), "d" (port))
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#define out32(value,port) \
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__asm__ ("outl %%eax,%%dx" : : "a" (value), "d" (port))
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#define in8(port) ({ \
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uint8 _v; \
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__asm__ volatile ("inb %%dx,%%al" : "=a" (_v) : "d" (port)); \
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_v; \
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})
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#define in16(port) ({ \
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uint16 _v; \
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__asm__ volatile ("inw %%dx,%%ax":"=a" (_v) : "d" (port)); \
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_v; \
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})
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#define in32(port) ({ \
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uint32 _v; \
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__asm__ volatile ("inl %%dx,%%eax":"=a" (_v) : "d" (port)); \
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_v; \
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})
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#define out8_p(value,port) \
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__asm__ ("outb %%al,%%dx\n" \
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"\tjmp 1f\n" \
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"1:\tjmp 1f\n" \
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"1:" : : "a" (value), "d" (port))
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#define in8_p(port) ({ \
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uint8 _v; \
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__asm__ volatile ("inb %%dx,%%al\n" \
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"\tjmp 1f\n" \
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"1:\tjmp 1f\n" \
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"1:" : "=a" (_v) : "d" (port)); \
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_v; \
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})
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#endif /* _KERNEL_ARCH_x86_CPUASM_H */
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