Generate bits/syscall.h with biarch support.

diff --git a/sysdeps/unix/sysv/linux/x86_64/Makefile b/sysdeps/unix/sysv/linux/x86_64/Makefile
index b14d425e500b568de87e2f848d89d0271fcacad9..e1b4a9561a8e5f52158453ba09af1a2299b18e52 100644 (file)
--- a/sysdeps/unix/sysv/linux/x86_64/Makefile
+++ b/sysdeps/unix/sysv/linux/x86_64/Makefile
@@ -1,4 +1,46 @@
 ifeq ($(subdir),misc)
 sysdep_routines += ioperm iopl
 sysdep_headers += sys/perm.h sys/reg.h sys/debugreg.h sys/io.h
+
+no_syscall_list_h = 1
+
+# Generate the list of SYS_* macros for the system calls (__NR_* macros).
+$(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/sys/syscall.h
+       rm -f $(@:.h=.d)-t
+       { \
+        echo '/* Generated at libc build time from kernel syscall list.  */';\
+        echo ''; \
+        echo '#ifndef _SYSCALL_H'; \
+        echo '# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."'; \
+        echo '#endif'; \
+        echo ''; \
+        SUNPRO_DEPENDENCIES='$(@:.h=.d)-t $@' \
+        $(CC) -E -x c $(sysincludes) $< -U__x86_64__ -D_LIBC -dM | \
+        sed -n 's@^#define __NR_\([^ ]*\) .*$$@#define SYS_\1 __NR_\1@p' | \
+        LC_ALL=C sort > $(@:.d=.h).new32; \
+        SUNPRO_DEPENDENCIES='$(@:.h=.d)-t $@' \
+        $(CC) -E -x c $(sysincludes) $< -D__x86_64 -D_LIBC -dM | \
+        sed -n 's@^#define __NR_\([^ ]*\) .*$$@#define SYS_\1 __NR_\1@p' | \
+        LC_ALL=C sort > $(@:.d=.h).new64; \
+        if cmp -s $(@:.d=.h).new32 $(@:.d=.h).new64; then \
+          cat $(@:.d=.h).new32; \
+        else \
+          echo '#include <bits/wordsize.h>'; \
+          echo ''; \
+          comm -12 $(@:.d=.h).new32 $(@:.d=.h).new64; \
+          echo '#if __WORDSIZE == 64'; \
+          comm -13 $(@:.d=.h).new32 $(@:.d=.h).new64; \
+          echo '#else'; \
+          comm -23 $(@:.d=.h).new32 $(@:.d=.h).new64; \
+          echo '#endif'; \
+        fi; \
+        rm -f $(@:.d=.h).new32 $(@:.d=.h).new64; \
+       } > $(@:.d=.h).new
+       mv -f $(@:.d=.h).new $(@:.d=.h)
+       sed < $(@:.h=.d)-t > $(@:.h=.d)-t2 \
+           -e 's,$(subst .,\.,$@),$(patsubst $(objpfx)%,$$(objpfx)%,\
+                                             $(@:.d=.h) $(@:.h=.d)),'
+       rm -f $(@:.h=.d)-t
+       mv -f $(@:.h=.d)-t2 $(@:.h=.d)
+
 endif