1 // Basic type definitions for X86 cpus.
3 // Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
5 // This file may be distributed under the terms of the GNU GPLv3 license.
9 typedef unsigned char u8;
10 typedef signed char s8;
11 typedef unsigned short u16;
12 typedef signed short s16;
13 typedef unsigned int u32;
14 typedef signed int s32;
15 typedef unsigned long long u64;
16 typedef signed long long s64;
20 struct { u32 hi, lo; };
24 #define __VISIBLE __attribute__((externally_visible))
27 // Notes a function as externally visible in the 16bit code chunk.
28 # define VISIBLE16 __VISIBLE
29 // Notes a function as externally visible in the 32bit code chunk.
31 // Designate a variable as (only) visible to 16bit code.
32 # define VAR16 __attribute__((section(".data.var16")))
33 // Designate a variable as visible to both 32bit and 16bit code.
34 # define VAR16_32 VAR16 __VISIBLE
35 // Designate top-level assembler as 16bit only.
36 # define ASM16(code) asm(code)
39 # define VISIBLE32 __VISIBLE
40 # define VAR16 __attribute__((section(".discard.var16")))
41 # define VAR16_32 VAR16 __VISIBLE __attribute__((weak))
45 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
46 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
47 #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
48 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
49 #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
50 #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
52 #define NULL ((void *)0)
54 #define PACKED __attribute__((packed))
55 #define __aligned(x) __attribute__((aligned(x)))
57 #define barrier() __asm__ __volatile__("": : :"memory")
59 #define noinline __attribute__((noinline))
60 #define __always_inline inline __attribute__((always_inline))
62 #define __stringify_1(x) #x
63 #define __stringify(x) __stringify_1(x)