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1998-08-24 16:34  Ulrich Drepper  <drepper@cygnus.com>

	* debug/catchsegv.sh: Handle text preceding backtrace better.
	* sysdeps/generic/segfault.c: Allow register dump.  Allow handler
	to be installed for other signals than SIGSEGV.
	* sysdeps/generic/register-dump.h: New file.
	* sysdeps/i386/register-dump.h: New file.
	* sysdeps/powerpc/register-dump.h: New file.

	* sysdeps/unix/sysv/linux/i386/profil-counter.h: Use macros from
	sigcontextinfo.h.
	* sysdeps/unix/sysv/linux/powerpc/profil-counter.h: Use i386 version.

1998-08-24  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h: New file.

1998-08-09  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/chown.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/lchown.S: New file.
	* sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add chown, remove
	getresuid, getresgid.

1998-08-16  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/clone.S: Fix bugs.  Set up stack
	pointer in userland.

1998-08-21  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/sys/mount.h (MNT_FORCE): Define as enum
	and fix value.

1998-08-22  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/ldd.bash.in: Add missing quotes around $file.  Make loop
	over arguments Bourne shell compatible.  Don't exit unsuccessfully
	if nonelf returns successfully.  Avoid duplicating most of the
	script.
	* sysdeps/unix/sysv/linux/ldd-rewrite.sed: Add missing quotes
	around $file.

1998-08-24 10:37  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/Versions (_IO_do_write, _IO_file_attach,
	_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
	_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
	_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
	_IO_file_write, _IO_file_xsputn): Added to GLIBC_2.1.

	* libio/fileops.c (_IO_do_write, _IO_file_attach,
	_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
	_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
	_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
	_IO_file_write, _IO_file_xsputn): Change the prefix to
	"_IO_new_". Added to GLIBC_2.1.

	* libio/libioP.h (_IO_do_write, _IO_file_attach,
	_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
	_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
	_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
	_IO_file_write, _IO_file_xsputn): Add prototypes for the prefix
	"_IO_new_".

	* libio/oldfileops.c (_IO_do_write, _IO_file_attach,
	_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
	_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
	_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
	_IO_file_write, _IO_file_xsputn): Added to GLIBC_2.0.

	* csu/initfini.c: Return to .text before __gmon_start__.
	* elf/elf.h (EM_FAKE_ALPHA): Rename from EM_OLD_ALPHA.
	(STO_MIPS_*): Rename from STO_*.
	(STB_MIPS_SPLIT_COMMON): Rename from STB_SPLIT_COMMON.
	(STO_ALPHA_NOPV, STO_ALPHA_STD_GPLOAD): New.
	* math/atest-exp.c (mpn_bitsize): Fix bit location calculation.
	(main): e3s is negative on zero.
	* math/atest-exp2.c: Likewise.
1998-08-23  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* Makerules (install): Add comment about absolute paths.
This commit is contained in:
Ulrich Drepper
1998-08-24 16:46:16 +00:00
parent c2228a5131
commit ed1ac6a2d6
18 changed files with 760 additions and 210 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
sysdeps/unix/sysv/linux/powerpc/clone.S
View File

@ -1,5 +1,5 @@
/* Wrapper around clone system call.
Copyright (C) 1997 Free Software Foundation, Inc.
Copyright (C) 1997, 1998 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
@ -28,56 +28,60 @@
/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
ENTRY(__clone)
/* Set up stack frame, save registers. */
stwu %r1,-32(%r1)
/* Check for child_stack == NULL || fn == NULL. */
cmpwi %cr0,%r4,0
stw %r31,16(%r1)
cmpwi %cr1,%r3,0
stw %r30,20(%r1)
beq- %cr0,badargs
beq- %cr1,badargs
cmpwi %cr0,%r4,0
cmpwi %cr1,%r3,0
cror cr0*4+eq,cr1*4+eq,cr0*4+eq
beq- %cr0,L(badargs)
/* Set up stack frame for parent. */
stwu %r1,-32(%r1)
stmw %r29,16(%r1)
/* Set up stack frame for child. */
addi %r4,%r4,-16
clrrwi %r4,%r4,4
li %r0,0
stw %r0,0(%r4)
clrrwi %r4,%r4,4
li %r0,0
stwu %r0,-16(%r4)
/* Save fn, args across syscall. */
mr %r30,%r3 /* Function in r30. */
mr %r31,%r6 /* Arguments in r31. */
/* Save fn, args, stack across syscall. */
mr %r29,%r3 /* Function in r29. */
mr %r30,%r4 /* Stack pointer in r30. */
mr %r31,%r6 /* Argument in r31. */
/* 'flags' argument is first parameter to clone syscall. (The other
argument is the stack pointer, already in r4.) */
mr %r3,%r5
mr %r3,%r5
/* Do the call. */
DO_CALL(SYS_ify(clone))
bso- error
beq child
/* Parent. Restore registers & return. */
lwz %r31,16(%r1)
lwz %r30,20(%r1)
addi %r1,%r1,32
blr
/* Check for child process. */
cmpwi %cr1,%r3,0
crandc cr1*4+eq,cr1*4+eq,cr0*4+so
bne- %cr1,L(parent) /* The '-' is to minimise the race. */
child:
/* On at least mklinux DR3a5, clone() doesn't actually change
the stack pointer. I'm pretty sure this is a bug, because
it adds a race condition if a signal is sent to a thread
just after it is created (in the previous three instructions). */
mr %r1,%r30
/* Call procedure. */
mtlr %r30
mr %r3,%r31
blrl
mtctr %r29
mr %r3,%r31
bctrl
/* Call _exit with result from procedure. */
b JUMPTARGET(_exit)
b JUMPTARGET(_exit)
badargs:
li %r3,EINVAL
error:
lwz %r31,16(%r1)
lwz %r30,20(%r1)
addi %r1,%r1,32
b JUMPTARGET(__syscall_error)
L(parent):
/* Parent. Restore registers & return. */
lmw %r29,16(%r1)
addi %r1,%r1,32
bnslr+
b JUMPTARGET(__syscall_error)
L(badargs):
li %r3,EINVAL
b JUMPTARGET(__syscall_error)
END (__clone)
weak_alias (__clone, clone)