66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
// Basic type definitions for X86 cpus.
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//
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// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
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//
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// This file may be distributed under the terms of the GNU LGPLv3 license.
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#ifndef __TYPES_H
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#define __TYPES_H
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typedef unsigned char u8;
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typedef signed char s8;
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typedef unsigned short u16;
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typedef signed short s16;
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typedef unsigned int u32;
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typedef signed int s32;
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typedef unsigned long long u64;
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typedef signed long long s64;
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typedef u32 size_t;
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union u64_u32_u {
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struct { u32 hi, lo; };
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u64 val;
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};
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#define __VISIBLE __attribute__((externally_visible))
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#if MODE16 == 1
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// Notes a function as externally visible in the 16bit code chunk.
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# define VISIBLE16 __VISIBLE
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// Notes a function as externally visible in the 32bit code chunk.
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# define VISIBLE32
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// Designate a variable as (only) visible to 16bit code.
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# define VAR16 __attribute__((section(".data.var16")))
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// Designate a variable as visible to both 32bit and 16bit code.
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# define VAR16_32 VAR16 __VISIBLE
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// Designate top-level assembler as 16bit only.
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# define ASM16(code) asm(code)
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#else
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# define VISIBLE16
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# define VISIBLE32 __VISIBLE
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# define VAR16 __attribute__((section(".discard.var16")))
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# define VAR16_32 VAR16 __VISIBLE __attribute__((weak))
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# define ASM16(code)
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#endif
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
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#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
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#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
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#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
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#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
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#define NULL ((void *)0)
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#define PACKED __attribute__((packed))
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#define __aligned(x) __attribute__((aligned(x)))
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#define barrier() __asm__ __volatile__("": : :"memory")
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#define noinline __attribute__((noinline))
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#define __always_inline inline __attribute__((always_inline))
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#define __stringify_1(x) #x
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#define __stringify(x) __stringify_1(x)
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#endif // types.h
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