mirror of https://github.com/Desuuuu/klipper.git
39 lines
1.8 KiB
C
39 lines
1.8 KiB
C
#ifndef __CTR_H
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#define __CTR_H
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// Definitions for creating compile time requests. The DECL_CTR macro
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// produces requests (text strings) that are placed in a special
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// section of the intermediate object files (*.o). The build extracts
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// these strings and places them in out/compile_time_requests.txt.
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// The scripts/buildcommand.py code then generates
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// out/compile_time_request.c from these requests.
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#include "compiler.h" // __section
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// Declare a compile time request
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#define DECL_CTR(REQUEST) \
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static char __PASTE(_DECLS_, __LINE__)[] __attribute__((used)) \
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__section(".compile_time_request") = (REQUEST)
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// Macro to encode an integer for use with DECL_CTR_INT()
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#define _CTR_HEX(H) ((H) > 9 ? (H) - 10 + 'A' : (H) + '0')
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#define _CTR_SHIFT(V, S) _CTR_HEX(((uint32_t)(V) >> (S)) & 0x0f)
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#define _CTR_INT(V, S) ((V) < 0 ? _CTR_SHIFT(-(V), (S)) : _CTR_SHIFT((V), (S)))
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#define CTR_INT(VALUE) { \
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' ', (VALUE) < 0 ? '-' : '+', '0', 'x', \
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_CTR_INT((VALUE),28), _CTR_INT((VALUE),24), \
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_CTR_INT((VALUE),20), _CTR_INT((VALUE),16), \
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_CTR_INT((VALUE),12), _CTR_INT((VALUE),8), \
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_CTR_INT((VALUE),4), _CTR_INT((VALUE),0) }
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// Declare a compile time request with an integer expression
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#define DECL_CTR_INT(REQUEST, PARAM_COUNT, args...) \
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static struct { \
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char _request[sizeof(REQUEST)-1]; \
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char _values[(PARAM_COUNT)][12]; \
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char _end_of_line; \
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} __PASTE(_DECLI_, __LINE__) __attribute__((used)) \
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__section(".compile_time_request") = { \
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(REQUEST), { args }, 0 }
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#endif // ctr.h
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