This patch consolidate the Linux vDSO define and usage across all ports
that uses it. The common vDSO definitions and calling through
{INLINE/INTERNAL}_VSYSCALL macros are moved to a common header
sysdep-vdso.h and vDSO name declaration and prototype is defined
using a common macro.
Also PTR_{MANGLE,DEMANGLE} is added to ports that does not use them
for vDSO calls (aarch64, powerpc, s390, and tile) and thus it will
reflect in code changes. For ports that already implement pointer
mangling/demangling in vDSO system (i386, x32, x86_64) this patch
is mainly a code refactor.
Checked on x32, x86_64, x32, ppc64le, and aarch64.
Linux 3.15 adds support for clock_gettime, gettimeofday, and time vDSO
(commit id 37c975545ec63320789962bf307f000f08fabd48). This patch adds
GLIBC supports to use such symbol when they are avaiable.
Along with x86 vDSO support, this patch cleanup x86_64 code by moving
all common code to x86 common folder. Only init-first.c is different
between implementations.
* sysdeps/unix/sysv/linux/Makefile [$(subdir)=math]
(sysdep_routines): Append setfpucw.
(extra-objs): Append ieee-fpucw.o.
(install-lib): Append libieee.a.
(libieee.a): New target.
* sysdeps/unix/sysv/linux/ieee-fpucw.c: New file.
* sysdeps/unix/sysv/linux/i386/fpu_control.h
(_FPU_GETCW, _FPU_SETCW): New macros.
(fpu_control_t): New typedef.
(__setfpucw): Use fpu_control_t for argument type.
* sysdeps/unix/sysv/linux/fpu_control.c: Moved from linux/i386.
* sysdeps/unix/sysv/linux/init-first.c: Moved from linux/i386.
* sysdeps/unix/sysv/linux/Makefile [$(subdir)=math]
(sysdep_routines): Append setfpucw.
(extra-objs): Append ieee-fpucw.o.
(install-lib): Append libieee.a.
(libieee.a): New target.
* sysdeps/unix/sysv/linux/ieee-fpucw.c: New file.
* sysdeps/unix/sysv/linux/i386/fpu_control.h
(_FPU_GETCW, _FPU_SETCW): New macros.
(fpu_control_t): New typedef.
(__setfpucw): Use fpu_control_t for argument type.
* sysdeps/unix/sysv/linux/fpu_control.c: Moved from linux/i386.
* sysdeps/unix/sysv/linux/init-first.c: Moved from linux/i386.
* posix/tstgetopt.c, posix/tstgetopt.args: Test long options too.
* sysdeps/unix/sysv/linux/i386/init-first.c (init): Save, set, and
restore %ebx by hand for personality syscall.
GCC cannot deal with spilling the dedicated GOT register.
* misc/Makefile (routines): Add mntent, which was somehow omitted.
Fri Sep 29 15:07:10 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* sysdeps/unix/sysv/linux/adjtime.c (__adjtime):
Change name of field `mode' in `struct timex' to `modes'.
Linux-1.3.28 updates this name according to RFC 1489.
* sysdeps/stub/sys/sem_buf.h (union semun): New type.
* sysdeps/mach/hurd/i386/init-first.c (init1) [PIC]: Call
__libc_global_ctors.
* sysdeps/i386/init-first.c: Rewritten.
* sysdeps/unix/sysv/linux/i386/init-first.S: File removed.
* sysdeps/unix/sysv/linux/i386/init-first.c: New file.
* sysdeps/unix/sysv/linux/i386/fpu_control.h: Fix name in decl of
___fpu_control.
* Makerules (build-shlib): New canned sequence, broken out of
lib%.so rule. Link in $^ instead of just $<.
(lib%.so: lib%_pic.a): Use it.
(libc.so): New target; use $(build-shlib) for cmds, but also depend
on soinit.so first and sofini.so last.
* elf/soinit.c: New file.
* elf/sofini.c: New file.
* elf/Makefile (distribute): Add soinit.c and sofini.c.
(extra-objs): Add soinit.so and sofini.so.
* sysvipc/sys/shm.h (shmat): Fix return type to char *.
* sysdeps/stub/sys/ipc_buf.h (key_t): Type removed.
* misc/syslog.c (vsyslog): Rewritten using open_memstream to
dynamically allocate buffers.
* Makerules (install-lib-nosubdir): Make this, rather than
install-no-libc.a, depend on the installed shared libraries.
