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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
2003-01-12 19:40:05 +00:00
parent addb5f3176
commit b398ae3c6d
7 changed files with 172 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
ChangeLog
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@ -1,3 +1,34 @@
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.
2003-01-12 Andreas Jaeger <aj@suse.de> 2003-01-12 Andreas Jaeger <aj@suse.de>
* math/bits/mathcalls.h: Round is a const function. * math/bits/mathcalls.h: Round is a const function.

4
linuxthreads/ChangeLog
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@ -1,3 +1,7 @@
2002-01-12 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: New file.
2002-01-09 Richard Henderson <rth@redhat.com> 2002-01-09 Richard Henderson <rth@redhat.com>
* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Assume only * sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Assume only

59
linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S Normal file
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@ -0,0 +1,59 @@
/* Copyright (C) 2003 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep-cancel.h>
#define _ERRNO_H 1
#include <bits/errno.h>
#include <kernel-features.h>
/* Clone the calling process, but without copying the whole address space.
The calling process is suspended until the new process exits or is
replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
and the process ID of the new process to the old process. */
ENTRY (__vfork)
#ifdef __NR_vfork
SINGLE_THREAD_P
bne- HIDDEN_JUMPTARGET(__fork)
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 JUMPTARGET(__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)
weak_alias (__vfork, vfork)

4
sysdeps/unix/sysv/linux/kernel-features.h
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@ -196,9 +196,11 @@
# define __ASSUME_AT_XID 1 # define __ASSUME_AT_XID 1
#endif #endif
/* Starting with 2.4.5 kernels PPC passes the AUXV in the standard way. */ /* Starting with 2.4.5 kernels PPC passes the AUXV in the standard way
and the vfork syscall made it into the official kernel. */
#if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__ #if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__
# define __ASSUME_STD_AUXV 1 # define __ASSUME_STD_AUXV 1
# define __ASSUME_VFORK_SYSCALL 1
#endif #endif
/* Starting with 2.4.5 kernels the mmap2 syscall made it into the official /* Starting with 2.4.5 kernels the mmap2 syscall made it into the official

61
sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
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@ -54,53 +54,29 @@
# include <errno.h> # include <errno.h>
/* On powerpc a system call basically clobbers the same registers like a
function call, with the exception of LR (which is needed for the
"sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
an error return status). */
# undef INLINE_SYSCALL # undef INLINE_SYSCALL
# define INLINE_SYSCALL(name, nr, args...) \ # define INLINE_SYSCALL(name, nr, args...) \
({ \ ({ \
register long r0 __asm__ ("r0"); \ INTERNAL_SYSCALL_DECL (sc_err); \
register long r3 __asm__ ("r3"); \ long sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args); \
register long r4 __asm__ ("r4"); \ if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
register long r5 __asm__ ("r5"); \
register long r6 __asm__ ("r6"); \
register long r7 __asm__ ("r7"); \
register long r8 __asm__ ("r8"); \
register long r9 __asm__ ("r9"); \
register long r10 __asm__ ("r10"); \
register long r11 __asm__ ("r11"); \
register long r12 __asm__ ("r12"); \
long ret, err; \
LOADARGS_##nr(name, args); \
__asm__ __volatile__ \
("sc\n\t" \
"mfcr %0" \
: "=&r" (r0), \
"=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
"=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
: ASM_INPUT_##nr \
: "cr0", "ctr", "memory"); \
err = r0; \
ret = r3; \
if (__builtin_expect (err & (1 << 28), 0)) \
{ \ { \
__set_errno (ret); \ __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \
ret = -1L; \ sc_ret = -1L; \
} \ } \
ret; \ sc_ret; \
}) })
/* Define a macro which expands inline into the wrapper code for a system /* Define a macro which expands inline into the wrapper code for a system
call. This use is for internal calls that do not need to handle errors call. This use is for internal calls that do not need to handle errors
normally. It will never touch errno. This returns just what the kernel normally. It will never touch errno.
gave back in the non-error (CR0.SO cleared) case, otherwise (CR0.SO set) On powerpc a system call basically clobbers the same registers like a
the negation of the return value in the kernel gets reverted. */ function call, with the exception of LR (which is needed for the
"sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
an error return status). */
# undef INTERNAL_SYSCALL_DECL # undef INTERNAL_SYSCALL_DECL
# define INTERNAL_SYSCALL_DECL(err) do { } while (0) # define INTERNAL_SYSCALL_DECL(err) long err
# undef INTERNAL_SYSCALL # undef INTERNAL_SYSCALL
# define INTERNAL_SYSCALL(name, err, nr, args...) \ # define INTERNAL_SYSCALL(name, err, nr, args...) \
@ -118,24 +94,23 @@
register long r12 __asm__ ("r12"); \ register long r12 __asm__ ("r12"); \
LOADARGS_##nr(name, args); \ LOADARGS_##nr(name, args); \
__asm__ __volatile__ \ __asm__ __volatile__ \
("sc\n\t" \ ("sc \n\t" \
"bns+ 0f\n\t" \ "mfcr %0" \
"neg %1,%1\n" \
"0:" \
: "=&r" (r0), \ : "=&r" (r0), \
"=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \ "=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
"=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \ "=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
: ASM_INPUT_##nr \ : ASM_INPUT_##nr \
: "cr0", "ctr", "memory"); \ : "cr0", "ctr", "memory"); \
err = r0; \
(int) r3; \ (int) r3; \
}) })
# undef INTERNAL_SYSCALL_ERROR_P # undef INTERNAL_SYSCALL_ERROR_P
# define INTERNAL_SYSCALL_ERROR_P(val, err) \ # define INTERNAL_SYSCALL_ERROR_P(val, err) \
((unsigned long) (val) >= 0xfffff001u) (__builtin_expect (err & (1 << 28), 0))
# undef INTERNAL_SYSCALL_ERRNO # undef INTERNAL_SYSCALL_ERRNO
# define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) # define INTERNAL_SYSCALL_ERRNO(val, err) (val)
# define LOADARGS_0(name, dummy) \ # define LOADARGS_0(name, dummy) \
r0 = __NR_##name r0 = __NR_##name
@ -181,4 +156,4 @@
#endif /* __ASSEMBLER__ */ #endif /* __ASSEMBLER__ */
#endif /* linux/powerpc/sysdep.h */ #endif /* linux/powerpc/powerpc32/sysdep.h */

56
sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S Normal file
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@ -0,0 +1,56 @@
/* Copyright (C) 2003 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
#define _ERRNO_H 1
#include <bits/errno.h>
#include <kernel-features.h>
/* Clone the calling process, but without copying the whole address space.
The calling process is suspended until the new process exits or is
replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
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 JUMPTARGET(__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)
weak_alias (__vfork, vfork)

1
sysdeps/unix/sysv/linux/powerpc/syscall.S
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@ -25,6 +25,7 @@ ENTRY (syscall)
mr r5,r6 mr r5,r6
mr r6,r7 mr r6,r7
mr r7,r8 mr r7,r8
mr r8,r9
sc sc
PSEUDO_RET PSEUDO_RET
PSEUDO_END (syscall) PSEUDO_END (syscall)