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authorkenistoj <kenistoj>2007-10-10 23:31:37 +0000
committerkenistoj <kenistoj>2007-10-10 23:31:37 +0000
commit4d3b883963b7ba3452ac641b633c89dcb92f0ef1 (patch)
tree4925aca604996e464c2ee8e292dc96071ee7dfec /runtime/uprobes/uprobes_ppc64.c
parentff0232d1767c1a2ef4bdfbf58d84ef8f6787be55 (diff)
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* runtime/uprobes/uprobes_ppc64.[ch]: Added
* runtime/uprobes/uprobes_s390.[ch]: Added
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+/*
+ * Userspace Probes (UProbes) for PowerPC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright IBM Corporation, 2007
+ */
+/*
+ * In versions of uprobes built in the SystemTap runtime, this file
+ * is #included at the end of uprobes.c.
+ */
+
+/*
+ * Replace the return address with the trampoline address. Returns
+ * the original return address.
+ */
+static
+unsigned long arch_hijack_uret_addr(unsigned long trampoline_address,
+ struct pt_regs *regs, struct uprobe_task *utask)
+{
+ unsigned long orig_ret_addr = regs->link;
+ regs->link = trampoline_address;
+ return orig_ret_addr;
+}