forked from Lephenixnoir/gint
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
//---
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// gint:defs:types - Type definitions
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//---
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#ifndef GINT_DEFS_TYPES
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#define GINT_DEFS_TYPES
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#include <gint/defs/attributes.h>
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/* For size_t, mainly */
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#include <stddef.h>
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/* For all fixed-width integer types */
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#include <stdint.h>
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/* Fixed-width types for bit fields are quite meaningless */
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typedef unsigned int uint;
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//---
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// Structure elements
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//----
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/* Giving a type to padding bytes is misguiding, let's hide it in a macro */
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#define pad_nam2(c) _ ## c
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#define pad_name(c) pad_nam2(c)
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#define pad(bytes) uint8_t pad_name(__COUNTER__)[bytes]
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/* byte_union() - union between an uint8_t 'byte' element and a bit field */
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#define byte_union(name, fields) \
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union { \
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uint8_t byte; \
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struct { fields } GPACKED(1); \
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} GPACKED(1) name
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/* word_union() - union between an uint16_t 'word' element and a bit field */
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#define word_union(name, fields) \
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union { \
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uint16_t word; \
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struct { fields } GPACKED(2); \
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} GPACKED(2) name
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/* lword_union() - union between an uint32_t 'lword' element and a bit field */
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#define lword_union(name, fields) \
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union { \
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uint32_t lword; \
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struct { fields } GPACKED(4); \
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} GPACKED(4) name
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#endif /* GINT_DEFS_TYPES */
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