Mercurial > pub > dyncall > dyncall
view test/thunk/test_thunk.c @ 533:71c884e610f0
- integration of patches from Raphael Luba, Thekla, Inc.:
* integration of aggregate-by-value (struct, union) support patch for x64 (win and sysv)
* windows/x64 asm additions to specify how stack unwinds (help for debuggers, exception handling, etc.)
* see Changelog for details
- new calling convention modes for thiscalls (platform agnostic, was specific before)
* new signature character for platform agnostic thiscalls ('*' / DC_SIGCHAR_CC_THISCALL)
- dcCallF(), dcVCallF(), dcArgF() and dcVArgF():
* added support for aggregates-by-value (wasn't part of patch)
* change that those functions don't implicitly call dcReset() anymore, which was unflexible (breaking change)
- added macros to feature test implementation for aggregate-by-value and syscall support
- changed libdyncall_s.lib and libdyncallback_s.lib order in callback test makefiles, as some toolchains are picky about order
- doc:
* man page updates to describe aggregate interface
* manual overview changes to highlight platforms with aggregate-by-value support
- test/plain: replaced tests w/ old/stale sctruct interface with new aggregate one
author | Tassilo Philipp |
---|---|
date | Thu, 21 Apr 2022 13:35:47 +0200 |
parents | 7608e34098b0 |
children | 57faec8b7600 |
line wrap: on
line source
/* Package: dyncall Library: test File: test/thunk/test_thunk.c Description: License: Copyright (c) 2011-2021 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/dyncall.h" #include "../../dyncallback/dyncall_thunk.h" #include "../../dyncallback/dyncall_alloc_wx.h" #include "../common/platformInit.h" #include "../common/platformInit.c" /* Impl. for functions only used in this translation unit */ /** ** test: thunks with several allocation modes ** such as on stack, on heap and explicit wx ** **/ #include <errno.h> #include <signal.h> #include <setjmp.h> #include <string.h> jmp_buf jbuf; static int last_sig; void segv_handler(int sig) { last_sig = sig; longjmp(jbuf, 1); } void my_entry(const char* text) { printf("%s: %d\n", text, strcmp(text, "wx") == 0 || strcmp(text, "stack") == 0 || strcmp(text, "heap") == 0); /* @@@ */ } typedef void (printfun)(const char*); void test_stack() { DCThunk t; printfun* fp; dcbInitThunk(&t, &my_entry); fp = (printfun*)&t; if(setjmp(jbuf) != 0) printf(last_sig == SIGSEGV ? "sigsegv\n" : "sigbus\n"); else fp("stack"); } #include <stdlib.h> void test_heap() { printfun* fp; DCThunk* p = (DCThunk*)malloc(sizeof(DCThunk)); if(!p) { printf("0\n"); return; } dcbInitThunk(p, &my_entry); fp = (printfun*)p; if(setjmp(jbuf) != 0) printf(last_sig == SIGSEGV ? "sigsegv\n" : "sigbus\n"); else fp("heap"); free(p); } void test_wx() { DCThunk* p; printfun* fp; int err = dcAllocWX(sizeof(DCThunk), (void**)&p); if(err || !p) { printf("0\n"); return; } dcbInitThunk(p, &my_entry); err = dcInitExecWX((void*)p, sizeof(DCThunk)); if(err) { dcFreeWX((void*)p, sizeof(DCThunk)); printf("0\n"); return; } fp = (printfun*)p; if(setjmp(jbuf) != 0) printf(last_sig == SIGSEGV ? "sigsegv\n" : "sigbus\n"); else fp("wx"); dcFreeWX((void*)p, sizeof(DCThunk)); } int main() { dcTest_initPlatform(); /* handle sigsegv and sigbus (latter used on some platforms for some mem */ /* access errors); use more complex setup if SA_ONSTACK is available */ #if defined(SA_ONSTACK) /* notes: - use sigaction(2) to pass SA_ONSTACK, to handle segfaults on stack (as handler would use same stack, this needs to be requested explicitly) - not using sigaltstack(2), as no need in our case */ struct sigaction sigAct; sigfillset(&(sigAct.sa_mask)); sigAct.sa_sigaction = segv_handler; sigAct.sa_flags = SA_ONSTACK; sigaction(SIGSEGV, &sigAct, NULL); sigaction(SIGBUS, &sigAct, NULL); #else signal(SIGSEGV, segv_handler); #if !defined(DC_WINDOWS) signal(SIGBUS, segv_handler); #endif #endif printf("Allocating ...\n"); printf("... W^X memory: "); test_wx(); printf("... heap memory: "); test_heap(); printf("... stack memory: "); test_stack(); dcTest_deInitPlatform(); return 0; }