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Kevin O'Connorf076a3e2008-02-25 22:25:15 -05001// Basic type definitions for X86 cpus.
2//
Kevin O'Connor0bf92702009-08-01 11:45:37 -04003// Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05004//
Kevin O'Connorb1b7c2a2009-01-15 20:52:58 -05005// This file may be distributed under the terms of the GNU LGPLv3 license.
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05006#ifndef __TYPES_H
7#define __TYPES_H
8
9typedef unsigned char u8;
10typedef signed char s8;
11typedef unsigned short u16;
12typedef signed short s16;
13typedef unsigned int u32;
14typedef signed int s32;
Kevin O'Connore51313d2008-03-12 21:19:34 -040015typedef unsigned long long u64;
Kevin O'Connor595fb462008-04-05 10:47:13 -040016typedef signed long long s64;
17typedef u32 size_t;
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050018
Kevin O'Connor1bb3b5c2008-05-14 00:43:13 -040019union u64_u32_u {
20 struct { u32 hi, lo; };
21 u64 val;
22};
23
Kevin O'Connor942d4952009-06-10 22:44:06 -040024#ifdef MANUAL_NO_JUMP_TABLE
25# define default case 775324556: asm(""); default
26#endif
27
28#ifdef WHOLE_PROGRAM
29# define __VISIBLE __attribute__((externally_visible))
30#else
31# define __VISIBLE
32#endif
Kevin O'Connor4a754b32008-12-28 21:37:27 -050033
Kevin O'Connorc0693942009-06-10 21:56:01 -040034#define UNIQSEC __FILE__ "." __stringify(__LINE__)
35
36#define __ASM(code) asm(".section .text.asm." UNIQSEC "\n\t" code)
37
Kevin O'Connor7ab798f2008-07-13 11:08:36 -040038#if MODE16 == 1
Kevin O'Connor19786762008-03-05 21:09:59 -050039// Notes a function as externally visible in the 16bit code chunk.
Kevin O'Connor4a754b32008-12-28 21:37:27 -050040# define VISIBLE16 __VISIBLE
Kevin O'Connor19786762008-03-05 21:09:59 -050041// Notes a function as externally visible in the 32bit code chunk.
Kevin O'Connor4a754b32008-12-28 21:37:27 -050042# define VISIBLE32
Kevin O'Connor92f95b02008-12-29 20:42:40 -050043// Designate a variable as (only) visible to 16bit code.
Kevin O'Connorc0693942009-06-10 21:56:01 -040044# define VAR16 __section(".data16." UNIQSEC)
Kevin O'Connor372e0712009-09-09 09:51:31 -040045// Designate a variable as visible to 16bit, 32bit, and assembler code.
46# define VAR16VISIBLE VAR16 __VISIBLE
47// Designate a variable as externally visible (in addition to all internal code).
Kevin O'Connorc0693942009-06-10 21:56:01 -040048# define VAR16EXPORT __section(".data16.export." UNIQSEC) __VISIBLE
Kevin O'Connor30853762009-01-17 18:49:20 -050049// Designate a variable at a specific 16bit address
Kevin O'Connorc0693942009-06-10 21:56:01 -040050# define VAR16FIXED(addr) __aligned(1) __VISIBLE __section(".fixedaddr." __stringify(addr))
Kevin O'Connor0bf92702009-08-01 11:45:37 -040051// Designate a 32bit variable also available in 16bit "big real" mode.
52# define VAR32VISIBLE __section(".discard.var32." UNIQSEC) __VISIBLE __weak
Kevin O'Connor4a754b32008-12-28 21:37:27 -050053// Designate top-level assembler as 16bit only.
Kevin O'Connorc0693942009-06-10 21:56:01 -040054# define ASM16(code) __ASM(code)
Kevin O'Connor0b60a062009-06-15 23:03:05 -040055// Designate top-level assembler as 32bit only.
Kevin O'Connorc0693942009-06-10 21:56:01 -040056# define ASM32(code)
Kevin O'Connor19786762008-03-05 21:09:59 -050057#else
Kevin O'Connor4a754b32008-12-28 21:37:27 -050058# define VISIBLE16
59# define VISIBLE32 __VISIBLE
Kevin O'Connorc0693942009-06-10 21:56:01 -040060# define VAR16 __section(".discard.var16." UNIQSEC)
Kevin O'Connor372e0712009-09-09 09:51:31 -040061# define VAR16VISIBLE VAR16 __VISIBLE __weak
62# define VAR16EXPORT VAR16VISIBLE
63# define VAR16FIXED(addr) VAR16VISIBLE
Kevin O'Connor0bf92702009-08-01 11:45:37 -040064# define VAR32VISIBLE __VISIBLE
Kevin O'Connor4a754b32008-12-28 21:37:27 -050065# define ASM16(code)
Kevin O'Connorc0693942009-06-10 21:56:01 -040066# define ASM32(code) __ASM(code)
Kevin O'Connor19786762008-03-05 21:09:59 -050067#endif
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050068
69#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -050070#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
Kevin O'Connor28fe1bd2008-03-11 22:14:15 -040071#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
Kevin O'Connor9dd0dd12008-05-18 00:03:32 -040072#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
Kevin O'Connor6aee52d2009-09-27 20:07:40 -040073#define DIV_ROUND_CLOSEST(x, divisor)({ \
74 typeof(divisor) __divisor = divisor; \
75 (((x) + ((__divisor) / 2)) / (__divisor)); \
76 })
Kevin O'Connor276d4a92008-06-11 22:47:01 -040077#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
78#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
Kevin O'Connor415d4292009-08-30 19:19:31 -040079#define ALIGN_DOWN(x,a) ((x) & ~((typeof(x))(a)-1))
Kevin O'Connor0bf92702009-08-01 11:45:37 -040080#define container_of(ptr, type, member) ({ \
81 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
82 (type *)( (char *)__mptr - offsetof(type,member) );})
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -050083
Kevin O'Connor415d4292009-08-30 19:19:31 -040084#define NULL ((void*)0)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050085
Kevin O'Connorc0693942009-06-10 21:56:01 -040086#define __weak __attribute__((weak))
87#define __section(S) __attribute__((section(S)))
88
Kevin O'Connor6eee8ca2008-03-03 20:14:12 -050089#define PACKED __attribute__((packed))
Kevin O'Connor18e38b22008-12-10 20:40:13 -050090#define __aligned(x) __attribute__((aligned(x)))
Kevin O'Connor6eee8ca2008-03-03 20:14:12 -050091
Kevin O'Connora4d35762008-03-08 15:43:03 -050092#define barrier() __asm__ __volatile__("": : :"memory")
93
Kevin O'Connoree55c762008-05-13 00:18:20 -040094#define noinline __attribute__((noinline))
Kevin O'Connor74f9c082008-04-13 16:57:16 -040095#define __always_inline inline __attribute__((always_inline))
Kevin O'Connorbc28a2b2008-03-11 19:32:38 -040096
Kevin O'Connora4d35762008-03-08 15:43:03 -050097#define __stringify_1(x) #x
98#define __stringify(x) __stringify_1(x)
99
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500100#endif // types.h