+/*
+ * sigreturn trampolines for AArch32.
+ *
+ * Copyright (C) 2005-2011 Nicolas Pitre <nico@fluxnic.net>
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * AArch32 sigreturn code
+ *
+ * For ARM syscalls, the syscall number has to be loaded into r7.
+ * We do not support an OABI userspace.
+ *
+ * For Thumb syscalls, we also pass the syscall number via r7. We therefore
+ * need two 16-bit instructions.
+ */
+
+#include <asm/unistd.h>
+
+ .globl __aarch32_sigret_code_start
+__aarch32_sigret_code_start:
+
+ /*
+ * ARM Code
+ */
+ // mov r7, #__NR_compat_sigreturn
+ .byte __NR_compat_sigreturn, 0x70, 0xa0, 0xe3
+ // svc #__NR_compat_sigreturn
+ .byte __NR_compat_sigreturn, 0x00, 0x00, 0xef
+
+ /*
+ * Thumb code
+ */
+ // svc #__NR_compat_sigreturn
+ .byte __NR_compat_sigreturn, 0x27
+ // mov r7, #__NR_compat_sigreturn
+ .byte __NR_compat_sigreturn, 0xdf
+
+ /*
+ * ARM code
+ */
+ // mov r7, #__NR_compat_rt_sigreturn
+ .byte __NR_compat_rt_sigreturn, 0x70, 0xa0, 0xe3
+ // svc #__NR_compat_rt_sigreturn
+ .byte __NR_compat_rt_sigreturn, 0x00, 0x00, 0xef
+
+ /*
+ * Thumb code
+ */
+ // svc #__NR_compat_rt_sigreturn
+ .byte __NR_compat_rt_sigreturn, 0x27
+ // mov r7, #__NR_compat_rt_sigreturn
+ .byte __NR_compat_rt_sigreturn, 0xdf
+
+ .globl __aarch32_sigret_code_end
+__aarch32_sigret_code_end: