Mercurial > pub > dyncall > dyncall
view dyncallback/dyncall_callback_x64.c @ 545:ca28e9e3c644
- test/callback_plain_c++, to test C++ non-trivial aggrs by value, as well as method callback handlers
- Changelog
author | Tassilo Philipp |
---|---|
date | Tue, 31 May 2022 18:35:06 +0200 |
parents | 71c884e610f0 |
children | ba70fb631bea |
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/* Package: dyncall Library: dyncallback File: dyncallback/dyncall_callback_x64.c Description: Callback - Implementation for x64 License: Copyright (c) 2007-2022 Daniel Adler <dadler@uni-goettingen.de>, Tassilo Philipp <tphilipp@potion-studios.com> Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "dyncall_callback.h" #include "dyncall_alloc_wx.h" #include "dyncall_aggregate.h" #include "dyncall_thunk.h" /* Callback symbol. */ extern void dcCallback_x64_sysv(); extern void dcCallback_x64_win64(); struct DCCallback { DCThunk thunk; /* offset 0, size 24 */ DCCallbackHandler* handler; /* offset 24 */ void* userdata; /* offset 32 */ DCint aggr_return_register; /* offset 40 */ DCint pad; /* offset 44 */ DCaggr *const * aggrs; /* offset 48 */ }; void dcbInitCallback2(DCCallback* pcb, const DCsigchar* signature, DCCallbackHandler* handler, void* userdata, DCaggr *const * aggrs) { const DCsigchar *ch = signature; DCint num_aggrs = 0; pcb->handler = handler; pcb->userdata = userdata; pcb->aggrs = NULL; pcb->aggr_return_register = -2; /* default, = no aggr as ret value */ while(*ch) num_aggrs += (*(ch++) == DC_SIGCHAR_AGGREGATE); if(num_aggrs) { pcb->aggrs = aggrs; if (ch != signature && *(ch - 1) == DC_SIGCHAR_AGGREGATE) { const DCaggr *ag = pcb->aggrs[num_aggrs - 1]; #if defined(DC_UNIX) if (!ag || (ag->sysv_classes[0] == SYSVC_MEMORY)) { #else if (!ag || ag->size > 8) { #endif /* we need to "return" this aggr as a hidden pointer (first arg) */ pcb->aggr_return_register = 0; } else { pcb->aggr_return_register = -1; /* small aggr, returned in register */ } } } } DCCallback* dcbNewCallback2(const DCsigchar* signature, DCCallbackHandler* handler, void* userdata, DCaggr *const * aggrs) { int err; DCCallback* pcb; err = dcAllocWX(sizeof(DCCallback), (void**) &pcb); if(err) return NULL; dcbInitCallback2(pcb, signature, handler, userdata, aggrs); #if defined (DC__OS_Win64) dcbInitThunk(&pcb->thunk, dcCallback_x64_win64); #else dcbInitThunk(&pcb->thunk, dcCallback_x64_sysv); #endif err = dcInitExecWX(pcb, sizeof(DCCallback)); if(err) { dcFreeWX(pcb, sizeof(DCCallback)); return NULL; } return pcb; }