metag: Add NPTL support

[uclinux-h8/uClibc.git] / libpthread / nptl / sysdeps / unix / sysv / linux / metag / pt-vfork.S

diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-vfork.S
new file mode 100644 (file)
index 0000000..489c749
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/pt-vfork.S
@@ -0,0 +1,51 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <tcb-offsets.h>
+#include <asm/unistd.h>
+
+#ifdef __PIC__
+#define __VFORK_METAG_LOAD_TP ___metag_load_tp@PLT
+#else
+#define __VFORK_METAG_LOAD_TP ___metag_load_tp
+#endif
+
+/* Save the PID value.  */
+#define SAVE_PID \
+       SETL    [A0StP++], D0FrT, D1RtP; \
+       CALLR   D1RtP, __VFORK_METAG_LOAD_TP; \
+       SUB     D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \
+       GETD    D0FrT, [D0Re0 + #PID]; \
+       NEG     D0FrT, D0FrT; \
+       SETD    [D0Re0 + #PID], D0FrT; \
+       GETL    D0FrT, D1RtP, [--A0StP];
+
+#define RESTORE_PID \
+       CMP     D0Re0, #0; \
+       BEQ     1f; \
+       MSETL   [A0StP++], D0Re0, D0FrT; \
+       CALLR   D1RtP, __VFORK_METAG_LOAD_TP; \
+       SUB     D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \
+       GETD    D0FrT, [D0Re0 + #PID]; \
+       NEG     D0FrT, D0FrT; \
+       SETD    [D0Re0 + #PID], D0FrT; \
+       GETL    D0FrT, D1RtP, [--A0StP]; \
+       GETL    D0Re0, D1Re0, [--A0StP]; \
+1:
+
+#include <../../../../../../../libc/sysdeps/linux/metag/vfork.S>