* Merged with default branch at rev 16f3633aaa5a.

[cacao.git] / src / vm / jit / x86_64 / linux / md-os.c

diff --git a/src/vm/jit/x86_64/linux/md-os.c b/src/vm/jit/x86_64/linux/md-os.c
index 84ad05b1367091e7c0a1d5fa9f1b0cb9f258600d..69a9b2b47baace592d7ca116aa06eb9b4e77b1b5 100644 (file)
--- a/src/vm/jit/x86_64/linux/md-os.c
+++ b/src/vm/jit/x86_64/linux/md-os.c
@@ -234,6 +234,36 @@ void md_signal_handler_sigfpe(int sig, siginfo_t *siginfo, void *_p)
 }
 
 
+/* md_signal_handler_sigusr1 ***************************************************
+
+   Signal handler for suspending threads.
+
+*******************************************************************************/
+
+#if defined(ENABLE_THREADS) && defined(ENABLE_GC_CACAO)
+void md_signal_handler_sigusr1(int sig, siginfo_t *siginfo, void *_p)
+{
+       ucontext_t *_uc;
+       mcontext_t *_mc;
+       u1         *pc;
+       u1         *sp;
+
+       _uc = (ucontext_t *) _p;
+       _mc = &_uc->uc_mcontext;
+
+       /* ATTENTION: Don't use CACAO's internal REG_* defines as they are
+          different to the ones in <ucontext.h>. */
+
+       /* get the PC and SP for this thread */
+       pc = (u1 *) _mc->gregs[REG_RIP];
+       sp = (u1 *) _mc->gregs[REG_RSP];
+
+       /* now suspend the current thread */
+       threads_suspend_ack(pc, sp);
+}
+#endif
+
+
 /* md_signal_handler_sigusr2 ***************************************************
 
    Signal handler for profiling sampling.