glibc/sysdeps/unix/sysv/linux/i386/Makefile
Adhemerval Zanella 045c13d185 Consolidate Linux setrlimit and getrlimit implementation
This patch consolidates all Linux setrlimit and getrlimit on the default
sysdeps/unix/sysv/linux/{set,get}rlimit{64}.c.  It contains two exceptions:

  1. mips32 and mips64n32 which requires a versioned symbol for GLIBC 2.19
     and higher due a broken RLIM64_INFINITY constant.
  2. sparc32 does not define a compat symbol for getrlimit64 for old 2GB
     limit. I am not sure if it is required, but a RLIM_INFINITY fix [1]
     change its definition without adding a compat symbol.  This patch does
     not aim to address this possible issue, it follow current symbol
     export.

The default implementation uses prlimit64 for 64 bit rlim_t ({set,get}rlimit64)
and if it fails with ENOSYS it fall back to {get,set}rlimit syscall.  This
code path is only used on kernel older than 2.6.36 (basically now only x86)
and I avoid to user __ASSUME_PRLIMTI64 to simplify the implementation.  Once
x86 moves to be on par with other architectures regarding minimum kernel
supported we can get rid of using old syscalls and default path.

A new type size define is added, __RLIM_T_MATCHES_RLIM64_T, where is set as
default for 64 bits ports.  This allows the default implementation to avoid
{get,set}rlimit building and alias {get,set}rlimit64 to {get,set}rlimit.

Checked on x86_64, i386, armhf, aarch64, and powerpc64le.  I also did a
sanity build plus check-abi on all other supported architectures.

[1] Commit 9c96ff2385

	Adhemerval Zanella  <adhemerval.zanella@linaro.org>
	Yury Norov  <ynorov@caviumnetworks.com>

	* bits/typesizes.h (__RLIM_T_MATCHES_RLIM64_T): define.
	* sysdeps/unix/sysv/linux/alpha/bits/typesizes.h
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/generic/bits/typesizes.h
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/typesizes.h [__s390x__]
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/typesizes.h
	[__arch64__ || __sparcv9] (__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/x86/bits/typesizes.h [__86_64__]
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/arm/Makefile [$(subdir) = resource]
	(sysdep_routines): Remove oldgetrlimit64.
	* sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) = resource]
	(sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/m68k/Makefile [$(subdir) = resource]
	(sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/Makefile
	[$(subdir) = resource] (sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/Makefile
	[$(subdir) = resource] (sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/arm/getrlimit64.c: Remove file.
	* sysdeps/unix/sysv/linux/arm/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/hppa/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/setrlimit64.c: Likewise.
	* sysdeps/sysv/linux/generic/wordsize-32/syscalls.list: Remove
	setrlimit and getrlimit.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/getrlimit.c: New file.
	* sysdeps/unix/sysv/linux/sparc/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64): Handle
	__RLIM_T_MATCHES_RLIM64_T and add alias if defined.
	(__old_getrlimit64): Add compatibility symbol.
	* sysdeps/unix/sysv/linux/setrlimit64.c (__setrlimit): Likewise.
2016-11-17 15:54:22 -02:00

79 lines
2.6 KiB
Makefile

# The default ABI is 32.
default-abi := 32
# %ebp is used to pass the 6th argument to system calls, so these
# system calls are incompatible with a frame pointer.
uses-6-syscall-arguments = -fomit-frame-pointer
ifeq ($(subdir),misc)
sysdep_routines += ioperm iopl vm86
CFLAGS-epoll_pwait.o += $(uses-6-syscall-arguments)
CFLAGS-epoll_pwait.os += $(uses-6-syscall-arguments)
CFLAGS-mmap.o += $(uses-6-syscall-arguments)
CFLAGS-mmap.os += $(uses-6-syscall-arguments)
CFLAGS-mmap64.o += $(uses-6-syscall-arguments)
CFLAGS-mmap64.os += $(uses-6-syscall-arguments)
CFLAGS-pselect.o += $(uses-6-syscall-arguments)
CFLAGS-pselect.os += $(uses-6-syscall-arguments)
CFLAGS-rtld-mmap.os += $(uses-6-syscall-arguments)
endif
ifeq ($(subdir),sysvipc)
CFLAGS-semtimedop.o += $(uses-6-syscall-arguments)
CFLAGS-semtimedop.os += $(uses-6-syscall-arguments)
endif
ifeq ($(subdir),elf)
sysdep-others += lddlibc4
install-bin += lddlibc4
endif
ifeq ($(subdir),io)
sysdep_routines += libc-do-syscall
CFLAGS-posix_fadvise64.o += $(uses-6-syscall-arguments)
CFLAGS-posix_fadvise64.os += $(uses-6-syscall-arguments)
CFLAGS-posix_fallocate.o += $(uses-6-syscall-arguments)
CFLAGS-posix_fallocate.os += $(uses-6-syscall-arguments)
CFLAGS-posix_fallocate64.o += $(uses-6-syscall-arguments)
CFLAGS-posix_fallocate64.os += $(uses-6-syscall-arguments)
CFLAGS-sync_file_range.o += $(uses-6-syscall-arguments)
CFLAGS-sync_file_range.os += $(uses-6-syscall-arguments)
CFLAGS-fallocate.o += $(uses-6-syscall-arguments)
CFLAGS-fallocate.os += $(uses-6-syscall-arguments)
CFLAGS-fallocate64.o += $(uses-6-syscall-arguments)
CFLAGS-fallocate64.os += $(uses-6-syscall-arguments)
endif
ifeq ($(subdir),nptl)
libpthread-sysdep_routines += libc-do-syscall
libpthread-shared-only-routines += libc-do-syscall
endif
ifeq ($(subdir),stdlib)
gen-as-const-headers += ucontext_i.sym
endif
ifeq ($(subdir),csu)
sysdep-dl-routines += sysdep
endif
ifeq ($(subdir),nptl)
# pull in __syscall_error routine
libpthread-routines += sysdep
libpthread-shared-only-routines += sysdep
CFLAGS-pthread_rwlock_timedrdlock.o += $(uses-6-syscall-arguments)
CFLAGS-pthread_rwlock_timedrdlock.os += $(uses-6-syscall-arguments)
CFLAGS-pthread_rwlock_timedwrlock.o += $(uses-6-syscall-arguments)
CFLAGS-pthread_rwlock_timedwrlock.os += $(uses-6-syscall-arguments)
CFLAGS-sem_wait.o += $(uses-6-syscall-arguments)
CFLAGS-sem_wait.os += $(uses-6-syscall-arguments)
CFLAGS-sem_timedwait.o += $(uses-6-syscall-arguments)
CFLAGS-sem_timedwait.os += $(uses-6-syscall-arguments)
endif
ifeq ($(subdir),rt)
# pull in __syscall_error routine
librt-routines += sysdep
librt-shared-only-routines += sysdep
endif