7 /* TODO(bernhard): use {u,}int* types */
10 // Note by hs: my signal.h includes sys/uconctext which conflicts with
11 // asm/ucontext - this hack kinda solves the problem for me ;-)
12 // so feel free to blame me for that s**t
13 #if defined __USE_XOPEN2K8
16 #warning hs-hack: undefining __USE_XOPEN2K8 for signal.h
20 #define __USE_XOPEN2K8
23 #include <sys/ucontext.h>
25 ptrdiff_t mateHandler(ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t);
28 #define dprintf(args...) do { printf (args); } while (0);
30 #define dprintf(args...)
33 void chandler(int nSignal, siginfo_t *info, void *ctx)
35 mcontext_t *mctx = &((ucontext_t *) ctx)->uc_mcontext;
37 ptrdiff_t eip = (ptrdiff_t) mctx->gregs[REG_EIP];
38 ptrdiff_t eax = (ptrdiff_t) mctx->gregs[REG_EAX];
39 ptrdiff_t ebx = (ptrdiff_t) mctx->gregs[REG_EBX];
40 ptrdiff_t esp = (ptrdiff_t) mctx->gregs[REG_ESP];
41 dprintf("trap: type %d, eip 0x%08x, eax 0x%08x, ebx 0x%08x, "
42 "esp 0x%08x, *esp 0x%08x\n", nSignal, eip,
43 eax, ebx, esp, *(ptrdiff_t*) esp);
45 mctx->gregs[REG_EIP] = mateHandler(eip, eax, ebx, esp);
48 void register_signal(void)
50 struct sigaction illaction;
51 illaction.sa_sigaction = chandler;
52 sigemptyset(&illaction.sa_mask);
53 illaction.sa_flags = SA_SIGINFO | SA_RESTART | SA_NODEFER;
54 sigaction(SIGILL, &illaction, NULL);
56 struct sigaction segvaction;
57 segvaction.sa_sigaction = chandler;
58 sigemptyset(&segvaction.sa_mask);
59 segvaction.sa_flags = SA_SIGINFO | SA_RESTART | SA_NODEFER;
60 sigaction(SIGSEGV, &segvaction, NULL);