+2012-08-01 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/kernel-features.h
+ (__ASSUME_VFORK_SYSCALL): Remove all definitions.
+ * sysdeps/unix/sysv/linux/i386/vfork.S (__vfork) [__NR_vfork]:
+ Make code unconditional.
+ (__vfork) [__ASSUME_VFORK_SYSCALL]: Likewise.
+ (__vfork) [!__ASSUME_VFORK_SYSCALL]: Remove conditional code.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S (__vfork)
+ [__NR_vfork]: Make code unconditional.
+ (__vfork) [__ASSUME_VFORK_SYSCALL]: Likewise.
+ (__vfork) [!__ASSUME_VFORK_SYSCALL]: Remove conditional code.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S (__vfork)
+ [__NR_vfork]: Make code unconditional.
+ (__vfork) [__ASSUME_VFORK_SYSCALL]: Likewise.
+ (__vfork) [!__ASSUME_VFORK_SYSCALL]: Remove conditional code.
+
2012-08-01 Roland McGrath <roland@hack.frob.com>
* sysdeps/generic/sys/param.h (NGROUPS): Define only if [NGROUPS_MAX].
+2012-08-01 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/arm/kernel-features.h
+ (__ASSUME_VFORK_SYSCALL): Remove.
+
2012-08-01 Roland McGrath <roland@hack.frob.com>
* sysdeps/arm/dl-machine.h (CLEAR_CACHE): Don't define it.
+2012-08-01 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/m68k/kernel-features.h
+ (__ASSUME_VFORK_SYSCALL): Remove.
+ * sysdeps/unix/sysv/linux/m68k/vfork.S (__vfork) [__NR_vfork]:
+ Make code unconditional.
+ (__vfork) [__ASSUME_VFORK_SYSCALL]: Likewise.
+ (__vfork) [!__ASSUME_VFORK_SYSCALL]: Remove conditional code.
+
2012-08-01 Roland McGrath <roland@hack.frob.com>
[BZ #14138]
/* Arm got fcntl64 in 2.4.4. */
#define __ASSUME_FCNTL64 1
-/* The vfork syscall on arm was definitely available in 2.4. */
-#define __ASSUME_VFORK_SYSCALL 1
-
/* The signal frame layout changed in 2.6.18. */
#if __LINUX_KERNEL_VERSION >= 132626
# define __ASSUME_SIGFRAME_V2 1
#define __ASSUME_MMAP2_SYSCALL 1
#define __ASSUME_STAT64_SYSCALL 1
#define __ASSUME_FCNTL64 1
-#define __ASSUME_VFORK_SYSCALL 1
/* Many syscalls were added in 2.6.10 for m68k. */
#if __LINUX_KERNEL_VERSION >= 132618
ENTRY (__vfork)
-#ifdef __NR_vfork
-
/* SAVE_PID clobbers call-clobbered registers and
saves data in D1 and A1. */
cfi_adjust_cfa_offset (4)
cfi_rel_offset (%pc, 0)
-# ifdef __ASSUME_VFORK_SYSCALL
-# ifndef PIC
+#ifndef PIC
jbra SYSCALL_ERROR_LABEL
-# endif
-# else
- /* Check if vfork syscall is known at all. */
- movel #-ENOSYS,%d1
- cmpl %d0,%d1
- jne SYSCALL_ERROR_LABEL
-
-# endif
-#endif
-
-#ifndef __ASSUME_VFORK_SYSCALL
- /* If we don't have vfork, fork is close enough. */
-
- movel #SYS_ify (fork), %d0
- trap #0
- tstl %d0
- jmi SYSCALL_ERROR_LABEL
- rts
#endif
PSEUDO_END (__vfork)
ENTRY (__vfork)
-#ifdef __NR_vfork
-
/* Pop the return PC value into ECX. */
popl %ecx
cfi_adjust_cfa_offset (-4)
cmpl $-4095, %eax
/* Branch forward if it failed. */
-# ifdef __ASSUME_VFORK_SYSCALL
jae SYSCALL_ERROR_LABEL
-# else
- jae .Lerror
-# endif
ret
-# ifndef __ASSUME_VFORK_SYSCALL
-.Lerror:
- /* Check if vfork syscall is known at all. */
- cmpl $-ENOSYS, %eax
- jne SYSCALL_ERROR_LABEL
-# endif
-#endif
-
-#ifndef __ASSUME_VFORK_SYSCALL
- /* If we don't have vfork, fork is close enough. */
-
- movl $SYS_ify (fork), %eax
- int $0x80
- cmpl $-4095, %eax
- jae SYSCALL_ERROR_LABEL
- ret
-#endif
PSEUDO_END (__vfork)
libc_hidden_def (__vfork)
MIPS n32). */
#define __ASSUME_GETDENTS64_SYSCALL 1
-/* Starting with 2.4.5 kernels the vfork syscall made it into the
- official kernel for PPC. */
-#ifdef __powerpc__
-# define __ASSUME_VFORK_SYSCALL 1
-#endif
-
/* Starting with 2.4.5 kernels the mmap2 syscall made it into the official
kernel. But PowerPC64 does not support a separate MMAP2 call. */
#if defined __powerpc__ && !defined __powerpc64__
# define __ASSUME_SET_THREAD_AREA_SYSCALL 1
#endif
-/* The vfork syscall on x86 and arm was definitely available in 2.4. */
-#ifdef __i386__
-# define __ASSUME_VFORK_SYSCALL 1
-#endif
-
/* The late 2.5 kernels saw a lot of new CLONE_* flags. Summarize
their availability with one define. The changes were made first
for i386 and the have to be done separately for the other archs.
-/* Copyright (C) 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
and the process ID of the new process to the old process. */
ENTRY (__vfork)
-
-#ifdef __NR_vfork
-
DO_CALL (SYS_ify (vfork))
-
-# ifdef __ASSUME_VFORK_SYSCALL
PSEUDO_RET
-# else
- bnslr+
- /* Check if vfork syscall is known at all. */
- cmpwi r3,ENOSYS
- bne- .Lsyscall_error
-
-# endif
-#endif
-
-#ifndef __ASSUME_VFORK_SYSCALL
- /* If we don't have vfork, fork is close enough. */
-
- DO_CALL (SYS_ify (fork))
- bnslr+
-
-.Lsyscall_error:
- b __syscall_error@local
-#endif
-
PSEUDO_END (__vfork)
libc_hidden_def (__vfork)
-/* Copyright (C) 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
ENTRY (__vfork)
CALL_MCOUNT 0
-
-#ifdef __NR_vfork
-
DO_CALL (SYS_ify (vfork))
-
-# ifdef __ASSUME_VFORK_SYSCALL
- PSEUDO_RET
-# else
- bnslr+
- /* Check if vfork syscall is known at all. */
- cmpdi r3,ENOSYS
- bne .Local_syscall_error
-
-# endif
-#endif
-
-#ifndef __ASSUME_VFORK_SYSCALL
- /* If we don't have vfork, fork is close enough. */
-
- DO_CALL (SYS_ify (fork))
PSEUDO_RET
-#endif
-
PSEUDO_END (__vfork)
libc_hidden_def (__vfork)
projects / thirdparty / glibc.git / commitdiff
