// Basic type definitions for X86 cpus.
//
-// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
//
-// This file may be distributed under the terms of the GNU GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
#ifndef __TYPES_H
#define __TYPES_H
u64 val;
};
-#define __VISIBLE __attribute__((externally_visible))
-#ifdef MODE16
+#ifdef MANUAL_NO_JUMP_TABLE
+# define default case 775324556: asm(""); default
+#endif
+
+#ifdef WHOLE_PROGRAM
+# define __VISIBLE __attribute__((externally_visible))
+#else
+# define __VISIBLE
+#endif
+
+#define UNIQSEC __FILE__ "." __stringify(__LINE__)
+
+#define __noreturn __attribute__((noreturn))
+extern void __force_link_error__only_in_32bit_flat(void) __noreturn;
+extern void __force_link_error__only_in_32bit_segmented(void) __noreturn;
+extern void __force_link_error__only_in_16bit(void) __noreturn;
+
+#define __ASM(code) asm(".section .text.asm." UNIQSEC "\n\t" code)
+
+#if MODE16 == 1
// Notes a function as externally visible in the 16bit code chunk.
-#define VISIBLE16 __VISIBLE
-// Notes a function as externally visible in the 32bit code chunk.
-#define VISIBLE32
+# define VISIBLE16 __VISIBLE
+// Notes a function as externally visible in the 32bit flat code chunk.
+# define VISIBLE32FLAT __section(".discard.func32flat." UNIQSEC) noinline
+// Notes a 32bit flat function that will only be called during init.
+# define VISIBLE32INIT VISIBLE32FLAT
+// Notes a function as externally visible in the 32bit segmented code chunk.
+# define VISIBLE32SEG __section(".discard.func32seg." UNIQSEC) noinline
+// Designate a variable as (only) visible to 16bit code.
+# define VAR16 __section(".data16." UNIQSEC)
+// Designate a variable as visible to 16bit, 32bit, and assembler code.
+# define VAR16VISIBLE VAR16 __VISIBLE
+// Designate a variable as externally visible (in addition to all internal code).
+# define VAR16EXPORT __section(".data16.export." UNIQSEC) __VISIBLE
+// Designate a variable at a specific 16bit address
+# define VAR16FIXED(addr) __aligned(1) __VISIBLE __section(".fixedaddr." __stringify(addr))
+// Designate a variable as (only) visible to 32bit segmented code.
+# define VAR32SEG __section(".discard.var32seg." UNIQSEC)
+// Designate a 32bit variable also available in 16bit "big real" mode.
+# define VAR32FLATVISIBLE __section(".discard.var32flat." UNIQSEC) __VISIBLE __weak
+// Designate top-level assembler as 16bit only.
+# define ASM16(code) __ASM(code)
+// Designate top-level assembler as 32bit flat only.
+# define ASM32FLAT(code)
+// Compile time check for a given mode.
+# define ASSERT16() do { } while (0)
+# define ASSERT32SEG() __force_link_error__only_in_32bit_segmented()
+# define ASSERT32FLAT() __force_link_error__only_in_32bit_flat()
+#elif MODESEGMENT == 1
+# define VISIBLE16 __section(".discard.func16." UNIQSEC) noinline
+# define VISIBLE32FLAT __section(".discard.func32flat." UNIQSEC) noinline
+# define VISIBLE32INIT VISIBLE32FLAT
+# define VISIBLE32SEG __VISIBLE
+# define VAR16 __section(".discard.var16." UNIQSEC)
+# define VAR16VISIBLE VAR16 __VISIBLE __weak
+# define VAR16EXPORT VAR16VISIBLE
+# define VAR16FIXED(addr) VAR16VISIBLE
+# define VAR32SEG __section(".data32seg." UNIQSEC)
+# define VAR32FLATVISIBLE __section(".discard.var32flat." UNIQSEC) __VISIBLE __weak
+# define ASM16(code)
+# define ASM32FLAT(code)
+# define ASSERT16() __force_link_error__only_in_16bit()
+# define ASSERT32SEG() do { } while (0)
+# define ASSERT32FLAT() __force_link_error__only_in_32bit_flat()
#else
-#define VISIBLE16
-#define VISIBLE32 __VISIBLE
+# define VISIBLE16 __section(".discard.func16." UNIQSEC) noinline
+# define VISIBLE32FLAT __section(".text.runtime." UNIQSEC) __VISIBLE
+# define VISIBLE32INIT __section(".text.init." UNIQSEC) __VISIBLE
+# define VISIBLE32SEG __section(".discard.func32seg." UNIQSEC) noinline
+# define VAR16 __section(".discard.var16." UNIQSEC)
+# define VAR16VISIBLE VAR16 __VISIBLE __weak
+# define VAR16EXPORT VAR16VISIBLE
+# define VAR16FIXED(addr) VAR16VISIBLE
+# define VAR32SEG __section(".discard.var32seg." UNIQSEC)
+# define VAR32FLATVISIBLE __section(".data.runtime." UNIQSEC) __VISIBLE
+# define ASM16(code)
+# define ASM32FLAT(code) __ASM(code)
+# define ASSERT16() __force_link_error__only_in_16bit()
+# define ASSERT32SEG() __force_link_error__only_in_32bit_segmented()
+# define ASSERT32FLAT() do { } while (0)
#endif
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+#define DIV_ROUND_CLOSEST(x, divisor)({ \
+ typeof(divisor) __divisor = divisor; \
+ (((x) + ((__divisor) / 2)) / (__divisor)); \
+ })
+#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
+#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
+#define ALIGN_DOWN(x,a) ((x) & ~((typeof(x))(a)-1))
+#define container_of(ptr, type, member) ({ \
+ const typeof( ((type *)0)->member ) *__mptr = (ptr); \
+ (type *)( (char *)__mptr - offsetof(type,member) );})
+
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+
+#define NULL ((void*)0)
-#define NULL ((void *)0)
+#define __weak __attribute__((weak))
+#define __section(S) __attribute__((section(S)))
#define PACKED __attribute__((packed))
+#define __aligned(x) __attribute__((aligned(x)))
#define barrier() __asm__ __volatile__("": : :"memory")
#define noinline __attribute__((noinline))
#define __always_inline inline __attribute__((always_inline))
+#define __malloc __attribute__((__malloc__))
+#define __attribute_const __attribute__((__const__))
#define __stringify_1(x) #x
#define __stringify(x) __stringify_1(x)
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