annotate test/callback_suite/README.txt @ 513:95f6f43178ed

test/callback_suite simplifications: - more generator code sharing - changing how explicit callconv is specified - fix to handle signatures with calling convention prefixes, correctly
author Tassilo Philipp
date Sun, 10 Apr 2022 16:10:10 +0200
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1 Callback Test Suite
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2 -------------------
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5 CONFIGURE SUITE
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7 needs lua: edit config.lua and run "make config".
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10 DESCRIPTION
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12 Generates a set of callback invokers in C using lua as a preprocessor.
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14 The invokers pass random arguments to the callback to test, from a set of
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15 reference values which are argument type- and position-specific.
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18 The Callback Invocation Body
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20 Example:
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21 The body for a signature of type "dpdf)p" at case id 19 is:
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23 void f19(void* addr)
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24 {
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25 V_p[4] = ((p(*)(d,p,d,f))addr)(K_d[0],K_p[1],K_d[2],K_f[3]);
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26 } ^^^^- dyncallback object
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27 ^^^^^^^^^^^^^- signature
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28 ^- return type ^- args from reference values (to be retrieved in handler)
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31 The K_? values are the reference values, which are supposed to be copied to
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32 V_?, and are compared for identity after invocation. The arguments are copied
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33 to V_? in the callback handler, called through "addr".
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35 The reference values stored in K_? are generated once, randomly, at startup.
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38 Specific calling conventions:
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40 Specify 'api' and 'ccprefix' accordingly to generate callbacks for a
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41 specific/custom calling convention:
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43 "__stdcall" "_s"
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44 "__fastcall" "_f" for gcc compiler
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45 "_F" for microsoft compiler
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47 See the dyncall documentation for other/more calling convention prefixes.
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