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2004-02-06  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc32/dl-machine.c: Declare __cache_line_size as
	weak extern.
	(__elf_machine_runtime_setup): Invalidate the instruction cache over
	the whole range of the PLT.
This commit is contained in:
Ulrich Drepper 2004-02-07 06:37:42 +00:00
parent 1e7947dcc9
commit acd262e611
2 changed files with 33 additions and 5 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2004-02-06 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/powerpc/powerpc32/dl-machine.c: Declare __cache_line_size as
weak extern.
(__elf_machine_runtime_setup): Invalidate the instruction cache over
the whole range of the PLT.
2004-02-06 Andreas Schwab <schwab@suse.de>
* posix/regcomp.c (build_range_exp): Fix off-by-one.

31
sysdeps/powerpc/powerpc32/dl-machine.c
View File

@ -1,5 +1,5 @@
/* Machine-dependent ELF dynamic relocation functions. PowerPC version.
Copyright (C) 1995-2001,2002,2003 Free Software Foundation, Inc.
Copyright (C) 1995-2003, 2004 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
@ -26,6 +26,11 @@
#include <dl-machine.h>
#include <stdio-common/_itoa.h>
/* The value __cache_line_size is defined in memset.S and is initialised
by _dl_sysdep_start via DL_PLATFORM_INIT. */
extern int __cache_line_size;
weak_extern (__cache_line_size)
/* Because ld.so is now versioned, these functions can be in their own file;
no relocations need to be done to call them.
Of course, if ld.so is not versioned... */
@ -304,14 +309,30 @@ __elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
there may be a little overlap at the start and the end.
Assumes that dcbst and icbi apply to lines of 16 bytes or
more. Current known line sizes are 16, 32, and 128 bytes. */
more. Current known line sizes are 16, 32, and 128 bytes.
The following gets the __cache_line_size, when available. */
/* Default minimum 4 words per cache line. */
int line_size_words = 4;
/* Don't try this until ld.so has relocated itself! */
int *line_size_ptr = &__cache_line_size;
if (lazy && line_size_ptr != NULL)
{
/* Verify that __cache_line_size is defined and set. */
if (*line_size_ptr != 0)
/* Convert bytes to words. */
line_size_words = *line_size_ptr / 4;
}
size_modified = lazy ? rel_offset_words : 6;
for (i = 0; i < size_modified; i += 4)
PPC_DCBST (plt + i);
for (i = 0; i < size_modified; i += line_size_words)
PPC_DCBST (plt + i);
PPC_DCBST (plt + size_modified - 1);
PPC_SYNC;
PPC_ICBI (plt);
for (i = 0; i < size_modified; i += line_size_words)
PPC_ICBI (plt + i);
PPC_ICBI (plt + size_modified - 1);
PPC_ISYNC;
}