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authorJoseph Myers <joseph@codesourcery.com>2011-12-22 18:22:50 +0000
committerJoseph Myers <joseph@codesourcery.com>2011-12-22 18:22:50 +0000
commit154bfc16225aaa3d3104e758eed2a17297131599 (patch)
tree7c944bbebea49f962ea036f95e1ae13b61c988c3 /sysdeps
parent16c6f99208229d7222fd26499749e56137322a3c (diff)
downloadglibc-154bfc16225aaa3d3104e758eed2a17297131599.zip
glibc-154bfc16225aaa3d3104e758eed2a17297131599.tar.gz
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Support building bits/syscall.h for any number of subarch variants.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/sysv/linux/Makefile66
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/Makefile7
-rw-r--r--sysdeps/unix/sysv/linux/s390/Makefile7
-rw-r--r--sysdeps/unix/sysv/linux/sparc/Makefile6
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/Makefile7
5 files changed, 61 insertions, 32 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 3032026..e684b16 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -39,8 +39,27 @@ install-others += $(inst_includedir)/bits/syscall.h
tests += tst-clone
# Generate the list of SYS_* macros for the system calls (__NR_* macros).
-# For bi-arch platforms, the CPU/Makefile defines {32,64}bit-predefine and
-# we generate a file that uses <bits/wordsize.h>.
+
+# If there is more than one syscall list for different architecture
+# variants, the CPU/Makefile defines syscall-list-variants to be a
+# list of names for those variants (e.g. 32bit 64bit), and, for each
+# variant, defines syscall-list-$(variant)-options to be compiler
+# options to cause <asm/unistd.h> to define the desired list of
+# syscalls and syscall-list-$(variant)-condition to be the condition
+# for those options to use in a C #if condition.
+# syscall-list-includes may be defined to a list of headers to include
+# in the generated header, if the default does not suffice.
+
+ifndef syscall-list-variants
+syscall-list-variants := default
+syscall-list-default-options :=
+syscall-list-default-condition :=
+endif
+
+ifndef syscall-list-includes
+syscall-list-includes := bits/wordsize.h
+endif
+
$(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/sys/syscall.h
$(make-target-directory)
{ \
@@ -50,37 +69,30 @@ $(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/sys/syscal
echo '# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."'; \
echo '#endif'; \
echo ''; \
- $(CC) -E -MD -MP -MF $(@:.h=.d)-t1 -MT '$(@:.d=.h) $(@:.h=.d)' \
- -x c $(sysincludes) $< $(addprefix -U,$(64bit-predefine)) \
- $(addprefix -D,$(32bit-predefine)) -D_LIBC -dM | \
- sed -n 's@^#define __NR_\([^ ]*\) .*$$@#define SYS_\1 __NR_\1@p' | \
- LC_ALL=C sort > $(@:.d=.h).new32; \
- $(CC) -E -MD -MP -MF $(@:.h=.d)-t2 -MT '$(@:.d=.h) $(@:.h=.d)' \
- -x c $(sysincludes) $< $(addprefix -U,$(32bit-predefine)) \
- $(addprefix -D,$(64bit-predefine)) -D_LIBC -dM | \
+ $(foreach h,$(syscall-list-includes), echo '#include <$(h)>';) \
+ echo ''; \
+ $(foreach v,$(syscall-list-variants),\
+ $(CC) -E -MD -MP -MF $(@:.h=.d)-t$(v) -MT '$(@:.d=.h) $(@:.h=.d)' \
+ -x c $(sysincludes) $< $(syscall-list-$(v)-options) \
+ -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 ''; \
- LC_ALL=C comm -12 $(@:.d=.h).new32 $(@:.d=.h).new64; \
- echo '#if __WORDSIZE == 64'; \
- LC_ALL=C comm -13 $(@:.d=.h).new32 $(@:.d=.h).new64; \
- echo '#else'; \
- LC_ALL=C comm -23 $(@:.d=.h).new32 $(@:.d=.h).new64; \
- echo '#endif'; \
- fi; \
- rm -f $(@:.d=.h).new32 $(@:.d=.h).new64; \
+ LC_ALL=C sort > $(@:.d=.h).new$(v); \
+ $(if $(syscall-list-$(v)-condition),\
+ echo '#if $(syscall-list-$(v)-condition)';) \
+ cat $(@:.d=.h).new$(v); \
+ $(if $(syscall-list-$(v)-condition),echo '#endif';) \
+ rm -f $(@:.d=.h).new$(v); \
+ ) \
} > $(@:.d=.h).new
mv -f $(@:.d=.h).new $(@:.d=.h)
ifneq (,$(objpfx))
- sed $(sed-remove-objpfx) $(@:.h=.d)-t1 $(@:.h=.d)-t2 > $(@:.h=.d)-t3
+ sed $(sed-remove-objpfx) \
+ $(foreach v,$(syscall-list-variants),$(@:.h=.d)-t$(v)) > $(@:.h=.d)-t3
else
- cat $(@:.h=.d)-t1 $(@:.h=.d)-t2 > $(@:.h=.d)-t3
+ cat $(foreach v,$(syscall-list-variants),$(@:.h=.d)-t$(v)) \
+ > $(@:.h=.d)-t3
endif
- rm -f $(@:.h=.d)-t1 $(@:.h=.d)-t2
+ rm -f $(foreach v,$(syscall-list-variants),$(@:.h=.d)-t$(v))
mv -f $(@:.h=.d)-t3 $(@:.h=.d)
$(inst_includedir)/bits/syscall.h: $(objpfx)syscall-list.h $(+force)
diff --git a/sysdeps/unix/sysv/linux/powerpc/Makefile b/sysdeps/unix/sysv/linux/powerpc/Makefile
index d1281cf..55311a4 100644
--- a/sysdeps/unix/sysv/linux/powerpc/Makefile
+++ b/sysdeps/unix/sysv/linux/powerpc/Makefile
@@ -1,4 +1,9 @@
-64bit-predefine = __powerpc64__
+syscall-list-variants := 32bit 64bit
+syscall-list-32bit-options := -U__powerpc64__
+syscall-list-32bit-condition := __WORDSIZE == 32
+syscall-list-64bit-options := -D__powerpc64__
+syscall-list-64bit-condition := __WORDSIZE == 64
+
ifeq ($(subdir),rt)
librt-routines += rt-sysdep
endif
diff --git a/sysdeps/unix/sysv/linux/s390/Makefile b/sysdeps/unix/sysv/linux/s390/Makefile
index 72eae68..fb20fb0 100644
--- a/sysdeps/unix/sysv/linux/s390/Makefile
+++ b/sysdeps/unix/sysv/linux/s390/Makefile
@@ -1,4 +1,9 @@
-64bit-predefine = __s390x__
+syscall-list-variants := 32bit 64bit
+syscall-list-32bit-options := -U__s390x__
+syscall-list-32bit-condition := __WORDSIZE == 32
+syscall-list-64bit-options := -D__s390x__
+syscall-list-64bit-condition := __WORDSIZE == 64
+
ifeq ($(subdir),rt)
librt-routines += rt-sysdep
endif
diff --git a/sysdeps/unix/sysv/linux/sparc/Makefile b/sysdeps/unix/sysv/linux/sparc/Makefile
index 9cb2a63..96bf0bb 100644
--- a/sysdeps/unix/sysv/linux/sparc/Makefile
+++ b/sysdeps/unix/sysv/linux/sparc/Makefile
@@ -1,4 +1,8 @@
-64bit-predefine = __sparc_v9__ __arch64__
+syscall-list-variants := 32bit 64bit
+syscall-list-32bit-options := -U__sparc_v9__ -U__arch64__
+syscall-list-32bit-condition := __WORDSIZE == 32
+syscall-list-64bit-options := -D__sparc_v9__ -D__arch64__
+syscall-list-64bit-condition := __WORDSIZE == 64
ifeq ($(subdir),rt)
librt-routines += rt-sysdep
diff --git a/sysdeps/unix/sysv/linux/x86_64/Makefile b/sysdeps/unix/sysv/linux/x86_64/Makefile
index 6e2741a..9c9e615 100644
--- a/sysdeps/unix/sysv/linux/x86_64/Makefile
+++ b/sysdeps/unix/sysv/linux/x86_64/Makefile
@@ -1,5 +1,8 @@
-32bit-predefine = __i386__
-64bit-predefine = __x86_64__
+syscall-list-variants := 32bit 64bit
+syscall-list-32bit-options := -D__i386__ -U__x86_64__
+syscall-list-32bit-condition := __WORDSIZE == 32
+syscall-list-64bit-options := -U__i386__ -D__x86_64__
+syscall-list-64bit-condition := __WORDSIZE == 64
ifeq ($(subdir),misc)
sysdep_routines += ioperm iopl