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-rw-r--r--nsprpub/pr/src/md/os2/os2gc.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/os2/os2gc.c b/nsprpub/pr/src/md/os2/os2gc.c
new file mode 100644
index 000000000..2bcbf7852
--- /dev/null
+++ b/nsprpub/pr/src/md/os2/os2gc.c
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * GC related routines
+ *
+ */
+#include "primpl.h"
+
+PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np)
+{
+ CONTEXTRECORD context;
+ context.ContextFlags = CONTEXT_INTEGER;
+
+ if (_PR_IS_NATIVE_THREAD(t)) {
+ context.ContextFlags |= CONTEXT_CONTROL;
+ if (QueryThreadContext(t->md.handle, CONTEXT_CONTROL, &context)) {
+ t->md.gcContext[0] = context.ctx_RegEax;
+ t->md.gcContext[1] = context.ctx_RegEbx;
+ t->md.gcContext[2] = context.ctx_RegEcx;
+ t->md.gcContext[3] = context.ctx_RegEdx;
+ t->md.gcContext[4] = context.ctx_RegEsi;
+ t->md.gcContext[5] = context.ctx_RegEdi;
+ t->md.gcContext[6] = context.ctx_RegEsp;
+ t->md.gcContext[7] = context.ctx_RegEbp;
+ *np = PR_NUM_GCREGS;
+ } else {
+ PR_ASSERT(0);/* XXX */
+ }
+ }
+ return (PRWord *)&t->md.gcContext;
+}
+
+/* This function is not used right now, but is left as a reference.
+ * If you ever need to get the fiberID from the currently running fiber,
+ * this is it.
+ */
+void *
+GetMyFiberID()
+{
+ void *fiberData = 0;
+
+ /* A pointer to our tib entry is found at FS:[18]
+ * At offset 10h is the fiberData pointer. The context of the
+ * fiber is stored in there.
+ */
+#ifdef HAVE_ASM
+ __asm {
+ mov EDX, FS:[18h]
+ mov EAX, DWORD PTR [EDX+10h]
+ mov [fiberData], EAX
+ }
+#endif
+
+ return fiberData;
+}