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63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
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#pragma once
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// offset of struct member
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#define OFFSETOF(TYPE, ELEMENT) ((size_t) & (((TYPE *)0)->ELEMENT))
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// assert
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#include <assert.h>
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#define ASSERT(X)
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// left/right shift
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#define LeftShift(a, b, c) ((a & ((1 << b) - 1)) << c)
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#define RightShift(a, b, c) ((a >> c) & ((1 << b) - 1))
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// align
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#ifndef ALIGN
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#define ALIGN ALIGN_FLOOR
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#endif
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#define ALIGN_FLOOR(address, range) ((addr_t)address & ~((addr_t)range - 1))
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#define ALIGN_CEIL(address, range) (((addr_t)address + (addr_t)range - 1) & ~((addr_t)range - 1))
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// borrow from gdb, refer: binutils-gdb/gdb/arch/arm.h
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#define submask(x) ((1L << ((x) + 1)) - 1)
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#define bits(obj, st, fn) (((obj) >> (st)) & submask((fn) - (st)))
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#define bit(obj, st) (((obj) >> (st)) & 1)
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#define sbits(obj, st, fn) ((long)(bits(obj, st, fn) | ((long)bit(obj, fn) * ~submask(fn - st))))
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// make it easy
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#define set_bit(obj, st, bit) obj = (((~(1 << st)) & obj) | (bit << st))
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#define set_bits(obj, st, fn, bits) obj = (((~(submask(fn - st) << st)) & obj) | (bits << st))
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// definition to expand macro then apply to pragma message
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// #pragma message(VAR_NAME_VALUE(HOST_OS_IOS))
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#define VALUE_TO_STRING(x) #x
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#define VALUE(x) VALUE_TO_STRING(x)
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#define VAR_NAME_VALUE(var) #var "=" VALUE(var)
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// format print
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#ifdef __LP64__
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#define __PRI_64_prefix "l"
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#define __PRI_PTR_prefix "l"
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#else
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#define __PRI_64_prefix "ll"
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#define __PRI_PTR_prefix
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#endif
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#define PRIxPTR __PRI_PTR_prefix "x" /* uintptr_t */
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// deprecated declared
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#if defined(__GNUC__) || defined(__clang__)
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#define DEPRECATED __attribute__((deprecated))
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#elif defined(_MSC_VER)
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#define DEPRECATED __declspec(deprecated)
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#else
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#pragma message("WARNING: You need to implement DEPRECATED for this compiler")
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#define DEPRECATED
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#endif
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// export method
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#if defined(_WIN32)
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#define PUBLIC
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#else
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#define PUBLIC __attribute__((visibility("default")))
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#define INTERNAL __attribute__((visibility("internal")))
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#endif
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