no_syscall_list_h = 1
-# Generate the list of SYS_* macros for the system calls (__NR_* macros).
-# We generate not only SYS_<syscall>, pointing at SYS_<abi>_<syscall> if
-# it exists, but also define SYS_<abi>_<syscall> for all ABIs.
+# A callable macro that expands to a shell command. Preprocess file $(1)
+# using ABI option $(2) and see which macros it defines. Print FOO for each
+# macro of the form __NR$(3)_FOO, filtering out ABI-specific __NR macros
+# that have a prefix other than $(3).
+mips_list_syscalls = $(filter-out -m%,$(CC)) -E -x c $(+includes) \
+ $(sysincludes) -D_LIBC -dM -mabi=$(2) $(1) | \
+ sed -n 's@^\#define __NR$(3)_\([^ ]*\) .*@\1@p' | \
+ sed -e '/^[ON]32_/d' -e '/^N64_/d' -e '/^64_/d' | \
+ LC_ALL=C sort
+
+# Generate a list of SYS_* macros from the linux __NR macros.
+#
+# Before version 2.6, linux had separate 32-bit and 64-bit MIPS ports,
+# each with its own set of headers. The ports were merged for 2.6 and
+# this merged port defines the syscalls in a slightly different way.
+# There are therefore three sets of headers that we need to consider:
+#
+# (1) Headers from the separate 32-bit MIPS port. They just define
+# a single list of __NR macros.
+#
+# (2) Headers from the separate 64-bit MIPS port. They unconditionally
+# define syscalls for all three ABIs, with o32 syscalls prefixed
+# by __NR_O32, n32 syscalls prefixed by __NR_N32 and n64 syscalls
+# prefixed by plain __NR.
+#
+# (3) Headers from the combined port. They use the _MIPS_SIM macro to
+# define the right set of syscalls for the current ABI. The syscalls
+# themselves have no special ABI prefix, but the headers also define:
+#
+# __NR_O32_Linux{,_syscalls}
+# __NR_N32_Linux{,_syscalls}
+# __NR_64_Linux{,_syscalls}
+#
+# In case (1) we just want a simple list of SYS_* macros. In cases (2)
+# and (3) we want a file that will work for all three ABIs, regardless
+# of which ABI we are currently using. We also want the file to work
+# if the user later moves from (2) to (3). Thus the file we create
+# for (2) and (3) has the form:
+#
+# #if _MIPS_SIM == _ABIN32
+# # ifdef __NR_N32_open
+# # define SYS_n32syscall1 __NR_N32_n32syscall1
+# # ...
+# # else
+# # define SYS_n32syscall1 __NR_n32syscall1
+# # ...
+# # endif
+# #elif _MIPS_SIM == _ABI64
+# # define SYS_n64syscall1 __NR_n64syscall1
+# # ...
+# #else
+# # ifdef __NR_O32_open
+# # define SYS_o32syscall1 __NR_O32_o32syscall1
+# # ...
+# # else
+# # define SYS_o32syscall1 __NR_o32syscall1
+# # ...
+# # endif
+# #endif
+#
+# Here, __NR_N32_open and __NR_O32_open are used to detect case (2)
+# over case (3). The n64 SYS_* macros can always use the normal
+# ABI-less names.
$(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/mips/sys/syscall.h
$(make-target-directory)
+ $(CC) -E -x c $(+includes) $(sysincludes) -D_LIBC $< -MD -MP \
+ -MF $(@:.h=.d)-t -MT '$(@:.d=.h) $(@:.h=.d)' > /dev/null
{ \
echo '/* Generated at libc build time from kernel syscall list. */';\
echo ''; \
echo '#endif'; \
echo ''; \
echo '#include <sgidefs.h>'; \
- rm -f $(@:.d=.h).newt; \
- $(CC) -E -MD -MP -MF $(@:.h=.d)-t -MT '$(@:.d=.h) $(@:.h=.d)' \
- -x c $(+includes) $(sysincludes) $< -D_LIBC -dM | \
- sed -n 's@^#define __NR_\([^ ]*\) .*$$@#define SYS_\1 __NR_\1@p' \
- > $(@:.d=.h).newt; \
- if grep SYS_O32_ $(@:.d=.h).newt > /dev/null; then \
+ rm -f $(@:.d=.h).new32 $(@:.d=.h).newn32 $(@:.d=.h).new64; \
+ $(call mips_list_syscalls,$<,n32,_N32) > $(@:.d=.h).newn32; \
+ if test -s $(@:.d=.h).newn32; then \
+ if grep open $(@:.d=.h).newn32 > /dev/null; then \
+ $(call mips_list_syscalls,$<,32,_O32) > $(@:.d=.h).new32; \
+ $(call mips_list_syscalls,$<,64,) > $(@:.d=.h).new64; \
+ else \
+ $(call mips_list_syscalls,$<,32,) > $(@:.d=.h).new32; \
+ $(call mips_list_syscalls,$<,n32,) > $(@:.d=.h).newn32; \
+ $(call mips_list_syscalls,$<,64,) > $(@:.d=.h).new64; \
+ fi; \
echo '#if _MIPS_SIM == _ABIN32'; \
- sed -n 's/^\(#define SYS_\)N32_/\1/p' < $(@:.d=.h).newt | \
- LC_ALL=C sort; \
+ echo '# ifdef __NR_N32_open'; \
+ sed 's@\(.*\)@# define SYS_\1 __NR_N32_\1@' < $(@:.d=.h).newn32; \
+ echo '# else'; \
+ sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).newn32; \
+ echo '# endif'; \
echo '#elif _MIPS_SIM == _ABI64'; \
- sed -n 's/^\(#define SYS_\)N64_/\1/p' < $(@:.d=.h).newt | \
- LC_ALL=C sort; \
+ sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).new64; \
echo '#else'; \
- sed -n 's/^\(#define SYS_\)O32_/\1/p' < $(@:.d=.h).newt | \
- LC_ALL=C sort; \
+ echo '# ifdef __NR_O32_open'; \
+ sed 's@\(.*\)@# define SYS_\1 __NR_O32_\1@' < $(@:.d=.h).new32; \
+ echo '# else'; \
+ sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).new32; \
+ echo '# endif'; \
echo '#endif'; \
- sed -n '/^#define SYS_\([ON]32\|N64\)_/p' < $(@:.d=.h).newt | \
- LC_ALL=C sort +1.8; \
else \
- cat $(@:.d=.h).newt; \
+ $(CC) -E -x c $(+includes) $(sysincludes) -D_LIBC -dM $< | \
+ sed -n 's@^\#define __NR_\([^ ]*\) .*@\#define SYS_\1 __NR_\1@p' | \
+ LC_ALL=C sort; \
fi; \
- rm $(@:.d=.h).newt; \
+ rm -f $(@:.d=.h).new32 $(@:.d=.h).newn32 $(@:.d=.h).new64; \
} > $(@:.d=.h).new
mv -f $(@:.d=.h).new $(@:.d=.h)
ifneq (,$(objpfx))
-/* Copyright (C) 2000, 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. */
-
-#ifndef _LINUX_MIPS_MIPS32_KERN64_SYSDEP_H
-#define _LINUX_MIPS_MIPS32_KERN64_SYSDEP_H 1
-
-/* There is some commonality. */
-#include <sysdeps/unix/sysv/linux/mips/mips32/sysdep.h>
-
-/* For Linux we can use the system call table in the header file
- /usr/include/asm/unistd.h
- of the kernel. But these symbols do not follow the SYS_* syntax
- so we have to redefine the `SYS_ify' macro here. */
-#undef SYS_ify
-#ifdef __STDC__
-# define SYS_ify(syscall_name) __NR_O32_##syscall_name
-#else
-# define SYS_ify(syscall_name) __NR_O32_/**/syscall_name
-#endif
-
-#endif /* linux/mips/mips32/kern64/sysdep.h */
projects / external / glibc.git / commitdiff