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Update.
2002-01-12 Franz Sirl <Franz.Sirl-kernel@lauterbach.com> * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_VFORK_SYSCALL): Define for powerpc. * sysdeps/unix/sysv/linux/powerpc/syscall.S: Take register alignment into account. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h (INTERNAL_SYSCALL): Make use of ERR parameter. (INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL_ERRNO, INTERNAL_SYSCALL_ERROR_P): Adjust accordingly. (INLINE_SYSCALL): Make use of INTERNAL_SYSCALL. * sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: New file. 2002-01-09 Richard Henderson <rth@redhat.com> * sysdeps/alpha/dl-machine.h (elf_machine_rela): Compute DTPREL64 and TPREL64 without loadbase applied. 2002-01-09 Richard Henderson <rth@redhat.com> * sysdeps/unix/alpha/sysdep.S: Use correct definition of errno for NOT_IN_libc. * sysdeps/unix/sysv/linux/alpha/sysdep.h: Move inline syscall bits... * sysdeps/unix/alpha/sysdep.h: ... here. (PSEUDO_LOADGP): Remove. (PSEUDO_PROLOGUE): Load GP in non-pic case. (SYSCALL_ERROR_LABEL): New. (PSEUDO): Use it in error branch. (PSEUDO_END): Add $syscall_error label.
This commit is contained in:
Ulrich Drepper
parent
addb5f3176
commit
b398ae3c6d
31
ChangeLog
31
ChangeLog
@ -1,3 +1,34 @@
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2002-01-12 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
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* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_VFORK_SYSCALL):
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Define for powerpc.
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* sysdeps/unix/sysv/linux/powerpc/syscall.S: Take register alignment
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into account.
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* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
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(INTERNAL_SYSCALL): Make use of ERR parameter.
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(INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL_ERRNO,
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INTERNAL_SYSCALL_ERROR_P): Adjust accordingly.
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(INLINE_SYSCALL): Make use of INTERNAL_SYSCALL.
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* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: New file.
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2002-01-09 Richard Henderson <rth@redhat.com>
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* sysdeps/alpha/dl-machine.h (elf_machine_rela): Compute
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DTPREL64 and TPREL64 without loadbase applied.
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2002-01-09 Richard Henderson <rth@redhat.com>
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* sysdeps/unix/alpha/sysdep.S: Use correct definition of errno
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for NOT_IN_libc.
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* sysdeps/unix/sysv/linux/alpha/sysdep.h: Move inline syscall bits...
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* sysdeps/unix/alpha/sysdep.h: ... here.
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(PSEUDO_LOADGP): Remove.
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(PSEUDO_PROLOGUE): Load GP in non-pic case.
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(SYSCALL_ERROR_LABEL): New.
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(PSEUDO): Use it in error branch.
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(PSEUDO_END): Add $syscall_error label.
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2003-01-12 Andreas Jaeger <aj@suse.de>
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* math/bits/mathcalls.h: Round is a const function.
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@ -1,3 +1,7 @@
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2002-01-12 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
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* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: New file.
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2002-01-09 Richard Henderson <rth@redhat.com>
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* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Assume only
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@ -0,0 +1,59 @@
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/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep-cancel.h>
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#define _ERRNO_H 1
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#include <bits/errno.h>
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#include <kernel-features.h>
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/* Clone the calling process, but without copying the whole address space.
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The calling process is suspended until the new process exits or is
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replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
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and the process ID of the new process to the old process. */
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ENTRY (__vfork)
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#ifdef __NR_vfork
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SINGLE_THREAD_P
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bne- HIDDEN_JUMPTARGET(__fork)
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DO_CALL (SYS_ify (vfork));
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# ifdef __ASSUME_VFORK_SYSCALL
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PSEUDO_RET
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# else
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bnslr+
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/* Check if vfork syscall is known at all. */
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cmpwi r3,ENOSYS
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bne JUMPTARGET(__syscall_error)
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# endif
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#endif
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#ifndef __ASSUME_VFORK_SYSCALL
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/* If we don't have vfork, fork is close enough. */
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DO_CALL (SYS_ify (fork));
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PSEUDO_RET
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#endif
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PSEUDO_END (__vfork)
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libc_hidden_def (__vfork)
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weak_alias (__vfork, vfork)
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@ -196,9 +196,11 @@
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# define __ASSUME_AT_XID 1
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#endif
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/* Starting with 2.4.5 kernels PPC passes the AUXV in the standard way. */
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/* Starting with 2.4.5 kernels PPC passes the AUXV in the standard way
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and the vfork syscall made it into the official kernel. */
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#if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__
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# define __ASSUME_STD_AUXV 1
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# define __ASSUME_VFORK_SYSCALL 1
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#endif
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/* Starting with 2.4.5 kernels the mmap2 syscall made it into the official
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@ -54,53 +54,29 @@
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# include <errno.h>
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/* On powerpc a system call basically clobbers the same registers like a
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function call, with the exception of LR (which is needed for the
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"sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
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an error return status). */
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# undef INLINE_SYSCALL
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# define INLINE_SYSCALL(name, nr, args...) \
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({ \
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register long r0 __asm__ ("r0"); \
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register long r3 __asm__ ("r3"); \
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register long r4 __asm__ ("r4"); \
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register long r5 __asm__ ("r5"); \
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register long r6 __asm__ ("r6"); \
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register long r7 __asm__ ("r7"); \
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register long r8 __asm__ ("r8"); \
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register long r9 __asm__ ("r9"); \
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register long r10 __asm__ ("r10"); \
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register long r11 __asm__ ("r11"); \
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register long r12 __asm__ ("r12"); \
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long ret, err; \
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LOADARGS_##nr(name, args); \
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__asm__ __volatile__ \
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("sc\n\t" \
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"mfcr %0" \
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: "=&r" (r0), \
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"=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
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"=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
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: ASM_INPUT_##nr \
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: "cr0", "ctr", "memory"); \
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err = r0; \
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ret = r3; \
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if (__builtin_expect (err & (1 << 28), 0)) \
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INTERNAL_SYSCALL_DECL (sc_err); \
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long sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args); \
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if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
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{ \
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__set_errno (ret); \
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ret = -1L; \
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__set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \
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sc_ret = -1L; \
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} \
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ret; \
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sc_ret; \
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})
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/* Define a macro which expands inline into the wrapper code for a system
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call. This use is for internal calls that do not need to handle errors
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normally. It will never touch errno. This returns just what the kernel
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gave back in the non-error (CR0.SO cleared) case, otherwise (CR0.SO set)
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the negation of the return value in the kernel gets reverted. */
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normally. It will never touch errno.
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On powerpc a system call basically clobbers the same registers like a
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function call, with the exception of LR (which is needed for the
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"sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
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an error return status). */
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# undef INTERNAL_SYSCALL_DECL
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# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
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# define INTERNAL_SYSCALL_DECL(err) long err
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# undef INTERNAL_SYSCALL
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# define INTERNAL_SYSCALL(name, err, nr, args...) \
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@ -118,24 +94,23 @@
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register long r12 __asm__ ("r12"); \
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LOADARGS_##nr(name, args); \
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__asm__ __volatile__ \
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("sc\n\t" \
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"bns+ 0f\n\t" \
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"neg %1,%1\n" \
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"0:" \
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("sc \n\t" \
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"mfcr %0" \
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: "=&r" (r0), \
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"=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
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"=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
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: ASM_INPUT_##nr \
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: "cr0", "ctr", "memory"); \
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err = r0; \
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(int) r3; \
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})
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# undef INTERNAL_SYSCALL_ERROR_P
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# define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((unsigned long) (val) >= 0xfffff001u)
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(__builtin_expect (err & (1 << 28), 0))
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# undef INTERNAL_SYSCALL_ERRNO
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# define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
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# define INTERNAL_SYSCALL_ERRNO(val, err) (val)
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# define LOADARGS_0(name, dummy) \
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r0 = __NR_##name
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@ -181,4 +156,4 @@
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#endif /* __ASSEMBLER__ */
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#endif /* linux/powerpc/sysdep.h */
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#endif /* linux/powerpc/powerpc32/sysdep.h */
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56
sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
Normal file
56
sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
Normal file
@ -0,0 +1,56 @@
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/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#define _ERRNO_H 1
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#include <bits/errno.h>
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#include <kernel-features.h>
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/* Clone the calling process, but without copying the whole address space.
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The calling process is suspended until the new process exits or is
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replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
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and the process ID of the new process to the old process. */
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ENTRY (__vfork)
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#ifdef __NR_vfork
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DO_CALL (SYS_ify (vfork))
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# ifdef __ASSUME_VFORK_SYSCALL
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PSEUDO_RET
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# else
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bnslr+
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/* Check if vfork syscall is known at all. */
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cmpwi r3,ENOSYS
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bne JUMPTARGET(__syscall_error)
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# endif
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#endif
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#ifndef __ASSUME_VFORK_SYSCALL
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/* If we don't have vfork, fork is close enough. */
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DO_CALL (SYS_ify (fork))
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PSEUDO_RET
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#endif
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PSEUDO_END (__vfork)
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libc_hidden_def (__vfork)
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weak_alias (__vfork, vfork)
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@ -25,6 +25,7 @@ ENTRY (syscall)
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mr r5,r6
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mr r6,r7
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mr r7,r8
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mr r8,r9
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sc
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PSEUDO_RET
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PSEUDO_END (syscall)
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