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68f3ec5671
[BZ #758] * sysdeps/unix/sysv/linux/mips/configure.in (asm-unistd.h): Only preprocess <asm/unistd.h> if it defines ABI-prefixed syscall names like __NR_N32_open. Just include <asm/unistd.h> otherwise. * sysdeps/unix/sysv/linux/mips/configure: Regenerate. * sysdeps/unix/sysv/linux/mips/mips32/kern64/sysdep.h: Delete * sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (SYS_ify): Use the standard __NR prefix. * sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (SYS_ify): Likewise. * sysdeps/unix/sysv/linux/mips/Makefile (syscall-%.h): Rework so that the output file is compatible with both pre-2.6 and 2.6 kernel headers. Extract separate syscall lists for each ABI.
129 lines
4.8 KiB
Makefile
129 lines
4.8 KiB
Makefile
ifeq ($(subdir),signal)
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#sysdep_routines += sigsuspend
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endif
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ifeq ($(subdir),misc)
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sysdep_routines += cachectl cacheflush sysmips _test_and_set
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sysdep_headers += sys/cachectl.h sys/sysmips.h sys/tas.h
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no_syscall_list_h = 1
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# A callable macro that expands to a shell command. Preprocess file $(1)
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# using ABI option $(2) and see which macros it defines. Print FOO for each
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# macro of the form __NR$(3)_FOO, filtering out ABI-specific __NR macros
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# that have a prefix other than $(3).
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mips_list_syscalls = $(filter-out -m%,$(CC)) -E -x c $(+includes) \
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$(sysincludes) -D_LIBC -dM -mabi=$(2) $(1) | \
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sed -n 's@^\#define __NR$(3)_\([^ ]*\) .*@\1@p' | \
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sed -e '/^[ON]32_/d' -e '/^N64_/d' -e '/^64_/d' | \
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LC_ALL=C sort
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# Generate a list of SYS_* macros from the linux __NR macros.
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#
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# Before version 2.6, linux had separate 32-bit and 64-bit MIPS ports,
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# each with its own set of headers. The ports were merged for 2.6 and
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# this merged port defines the syscalls in a slightly different way.
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# There are therefore three sets of headers that we need to consider:
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#
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# (1) Headers from the separate 32-bit MIPS port. They just define
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# a single list of __NR macros.
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#
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# (2) Headers from the separate 64-bit MIPS port. They unconditionally
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# define syscalls for all three ABIs, with o32 syscalls prefixed
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# by __NR_O32, n32 syscalls prefixed by __NR_N32 and n64 syscalls
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# prefixed by plain __NR.
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#
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# (3) Headers from the combined port. They use the _MIPS_SIM macro to
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# define the right set of syscalls for the current ABI. The syscalls
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# themselves have no special ABI prefix, but the headers also define:
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#
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# __NR_O32_Linux{,_syscalls}
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# __NR_N32_Linux{,_syscalls}
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# __NR_64_Linux{,_syscalls}
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#
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# In case (1) we just want a simple list of SYS_* macros. In cases (2)
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# and (3) we want a file that will work for all three ABIs, regardless
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# of which ABI we are currently using. We also want the file to work
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# if the user later moves from (2) to (3). Thus the file we create
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# for (2) and (3) has the form:
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#
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# #if _MIPS_SIM == _ABIN32
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# # ifdef __NR_N32_open
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# # define SYS_n32syscall1 __NR_N32_n32syscall1
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# # ...
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# # else
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# # define SYS_n32syscall1 __NR_n32syscall1
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# # ...
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# # endif
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# #elif _MIPS_SIM == _ABI64
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# # define SYS_n64syscall1 __NR_n64syscall1
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# # ...
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# #else
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# # ifdef __NR_O32_open
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# # define SYS_o32syscall1 __NR_O32_o32syscall1
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# # ...
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# # else
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# # define SYS_o32syscall1 __NR_o32syscall1
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# # ...
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# # endif
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# #endif
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#
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# Here, __NR_N32_open and __NR_O32_open are used to detect case (2)
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# over case (3). The n64 SYS_* macros can always use the normal
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# ABI-less names.
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$(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/mips/sys/syscall.h
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$(make-target-directory)
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$(CC) -E -x c $(+includes) $(sysincludes) -D_LIBC $< -MD -MP \
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-MF $(@:.h=.d)-t -MT '$(@:.d=.h) $(@:.h=.d)' > /dev/null
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{ \
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echo '/* Generated at libc build time from kernel syscall list. */';\
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echo ''; \
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echo '#ifndef _SYSCALL_H'; \
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echo '# error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."'; \
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echo '#endif'; \
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echo ''; \
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echo '#include <sgidefs.h>'; \
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rm -f $(@:.d=.h).new32 $(@:.d=.h).newn32 $(@:.d=.h).new64; \
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$(call mips_list_syscalls,$<,n32,_N32) > $(@:.d=.h).newn32; \
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if test -s $(@:.d=.h).newn32; then \
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if grep open $(@:.d=.h).newn32 > /dev/null; then \
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$(call mips_list_syscalls,$<,32,_O32) > $(@:.d=.h).new32; \
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$(call mips_list_syscalls,$<,64,) > $(@:.d=.h).new64; \
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else \
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$(call mips_list_syscalls,$<,32,) > $(@:.d=.h).new32; \
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$(call mips_list_syscalls,$<,n32,) > $(@:.d=.h).newn32; \
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$(call mips_list_syscalls,$<,64,) > $(@:.d=.h).new64; \
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fi; \
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echo '#if _MIPS_SIM == _ABIN32'; \
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echo '# ifdef __NR_N32_open'; \
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sed 's@\(.*\)@# define SYS_\1 __NR_N32_\1@' < $(@:.d=.h).newn32; \
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echo '# else'; \
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sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).newn32; \
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echo '# endif'; \
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echo '#elif _MIPS_SIM == _ABI64'; \
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sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).new64; \
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echo '#else'; \
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echo '# ifdef __NR_O32_open'; \
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sed 's@\(.*\)@# define SYS_\1 __NR_O32_\1@' < $(@:.d=.h).new32; \
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echo '# else'; \
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sed 's@\(.*\)@# define SYS_\1 __NR_\1@' < $(@:.d=.h).new32; \
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echo '# endif'; \
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echo '#endif'; \
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else \
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$(CC) -E -x c $(+includes) $(sysincludes) -D_LIBC -dM $< | \
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sed -n 's@^\#define __NR_\([^ ]*\) .*@\#define SYS_\1 __NR_\1@p' | \
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LC_ALL=C sort; \
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fi; \
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rm -f $(@:.d=.h).new32 $(@:.d=.h).newn32 $(@:.d=.h).new64; \
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} > $(@:.d=.h).new
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mv -f $(@:.d=.h).new $(@:.d=.h)
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ifneq (,$(objpfx))
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sed $(sed-remove-objpfx) $(@:.h=.d)-t > $(@:.h=.d)-t2
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rm -f $(@:.h=.d)-t
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mv -f $(@:.h=.d)-t2 $(@:.h=.d)
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else
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mv -f $(@:.h=.d)-t $(@:.h=.d)
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endif
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endif
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