nptl: sysdep headers re-factoring

This patch will re-factor and simplify sysdep headers
handling for nptl branch.
The reason is to use some useful macros in asm code (i.e. ENTRY()) that are available
only into nptl branch because are defined in sysdep.h header under the nptl folder
even if they are not related to NPTL at all (this was likely due to a bad choice done
at the early stage of NPTL porting).
This is a required steps for integrating into master branch some asm code available in
nptl branch for sh4.

The main changes are described below:

nptl/sysdeps/generic/sysdep.h (moved) ---> libc/sysdeps/linux/common/sysdep.h
nptl/sysdeps/arm/sysdep.h     (moved) ---> libc/sysdeps/linux/arm/sysdep.h

nptl/sysdeps/sh/sysdep.h ---------------------|
nptl/sysdeps/unix/sh/sysdep.h ----------------|
nptl/sysdeps/unix/sysv/linux/sh/sysdep.h -----|
nptl/sysdeps/unix/sysv/linux/sh/sh4/sysdep.h -|
                                              |(merged) ---> libc/sysdeps/linux/sh

nptl/sysdeps/unix/sysdep.h (deleted)

Similarly the mips and arm sysdep.h should be merged and updated as for sh arch.

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

1 files changed, 139 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/common/sysdep.h b/libc/sysdeps/linux/common/sysdep.h
new file mode 100644
index 000000000..cd5b2f1e3
--- /dev/null
+++ b/libc/sysdeps/linux/common/sysdep.h
@@ -0,0 +1,139 @@
+/* Generic asm macros used on many machines.
+   Copyright (C) 1991,92,93,96,98,2002,2003 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 <sys/syscall.h>
+
+#ifndef C_LABEL
+
+/* Define a macro we can use to construct the asm name for a C symbol.  */
+#ifndef	__UCLIBC_UNDERSCORES__
+#ifdef	__STDC__
+#define C_LABEL(name)		name##:
+#else
+#define C_LABEL(name)		name/**/:
+#endif
+#else
+#ifdef	__STDC__
+#define C_LABEL(name)		_##name##:
+#else
+#define C_LABEL(name)		_/**/name/**/:
+#endif
+#endif
+
+#endif
+
+#ifdef __ASSEMBLER__
+/* Mark the end of function named SYM.  This is used on some platforms
+   to generate correct debugging information.  */
+#ifndef END
+#define END(sym)
+#endif
+
+#ifndef JUMPTARGET
+#define JUMPTARGET(sym)		sym
+#endif
+
+/* Macros to generate eh_frame unwind information.  */
+# ifdef HAVE_ASM_CFI_DIRECTIVES
+#  define cfi_startproc			.cfi_startproc
+#  define cfi_endproc			.cfi_endproc
+#  define cfi_def_cfa(reg, off)		.cfi_def_cfa reg, off
+#  define cfi_def_cfa_register(reg)	.cfi_def_cfa_register reg
+#  define cfi_def_cfa_offset(off)	.cfi_def_cfa_offset off
+#  define cfi_adjust_cfa_offset(off)	.cfi_adjust_cfa_offset off
+#  define cfi_offset(reg, off)		.cfi_offset reg, off
+#  define cfi_rel_offset(reg, off)	.cfi_rel_offset reg, off
+#  define cfi_register(r1, r2)		.cfi_register r1, r2
+#  define cfi_return_column(reg)	.cfi_return_column reg
+#  define cfi_restore(reg)		.cfi_restore reg
+#  define cfi_same_value(reg)		.cfi_same_value reg
+#  define cfi_undefined(reg)		.cfi_undefined reg
+#  define cfi_remember_state		.cfi_remember_state
+#  define cfi_restore_state		.cfi_restore_state
+#  define cfi_window_save		.cfi_window_save
+# else
+#  define cfi_startproc
+#  define cfi_endproc
+#  define cfi_def_cfa(reg, off)
+#  define cfi_def_cfa_register(reg)
+#  define cfi_def_cfa_offset(off)
+#  define cfi_adjust_cfa_offset(off)
+#  define cfi_offset(reg, off)
+#  define cfi_rel_offset(reg, off)
+#  define cfi_register(r1, r2)
+#  define cfi_return_column(reg)
+#  define cfi_restore(reg)
+#  define cfi_same_value(reg)
+#  define cfi_undefined(reg)
+#  define cfi_remember_state
+#  define cfi_restore_state
+#  define cfi_window_save
+# endif
+
+#else /* ! ASSEMBLER */
+# ifdef HAVE_ASM_CFI_DIRECTIVES
+#  define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
+#  define CFI_STRINGIFY2(Name) #Name
+#  define CFI_STARTPROC	".cfi_startproc"
+#  define CFI_ENDPROC	".cfi_endproc"
+#  define CFI_DEF_CFA(reg, off)	\
+   ".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
+#  define CFI_DEF_CFA_REGISTER(reg) \
+   ".cfi_def_cfa_register " CFI_STRINGIFY(reg)
+#  define CFI_DEF_CFA_OFFSET(off) \
+   ".cfi_def_cfa_offset " CFI_STRINGIFY(off)
+#  define CFI_ADJUST_CFA_OFFSET(off) \
+   ".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
+#  define CFI_OFFSET(reg, off) \
+   ".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
+#  define CFI_REL_OFFSET(reg, off) \
+   ".cfi_rel_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
+#  define CFI_REGISTER(r1, r2) \
+   ".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
+#  define CFI_RETURN_COLUMN(reg) \
+   ".cfi_return_column " CFI_STRINGIFY(reg)
+#  define CFI_RESTORE(reg) \
+   ".cfi_restore " CFI_STRINGIFY(reg)
+#  define CFI_UNDEFINED(reg) \
+   ".cfi_undefined " CFI_STRINGIFY(reg)
+#  define CFI_REMEMBER_STATE \
+   ".cfi_remember_state"
+#  define CFI_RESTORE_STATE \
+   ".cfi_restore_state"
+#  define CFI_WINDOW_SAVE \
+   ".cfi_window_save"
+# else
+#  define CFI_STARTPROC
+#  define CFI_ENDPROC
+#  define CFI_DEF_CFA(reg, off)
+#  define CFI_DEF_CFA_REGISTER(reg)
+#  define CFI_DEF_CFA_OFFSET(off)
+#  define CFI_ADJUST_CFA_OFFSET(off)
+#  define CFI_OFFSET(reg, off)
+#  define CFI_REL_OFFSET(reg, off)
+#  define CFI_REGISTER(r1, r2)
+#  define CFI_RETURN_COLUMN(reg)
+#  define CFI_RESTORE(reg)
+#  define CFI_UNDEFINED(reg)
+#  define CFI_REMEMBER_STATE
+#  define CFI_RESTORE_STATE
+#  define CFI_WINDOW_SAVE
+# endif
+
+#endif /* __ASSEMBLER__ */