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Update.
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.
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@ -1,3 +1,10 @@
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2004-02-06 Steven Munroe <sjmunroe@us.ibm.com>
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* sysdeps/powerpc/powerpc32/dl-machine.c: Declare __cache_line_size as
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weak extern.
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(__elf_machine_runtime_setup): Invalidate the instruction cache over
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the whole range of the PLT.
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2004-02-06 Andreas Schwab <schwab@suse.de>
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* posix/regcomp.c (build_range_exp): Fix off-by-one.
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@ -1,5 +1,5 @@
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/* Machine-dependent ELF dynamic relocation functions. PowerPC version.
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Copyright (C) 1995-2001,2002,2003 Free Software Foundation, Inc.
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Copyright (C) 1995-2003, 2004 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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@ -26,6 +26,11 @@
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#include <dl-machine.h>
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#include <stdio-common/_itoa.h>
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/* The value __cache_line_size is defined in memset.S and is initialised
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by _dl_sysdep_start via DL_PLATFORM_INIT. */
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extern int __cache_line_size;
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weak_extern (__cache_line_size)
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/* Because ld.so is now versioned, these functions can be in their own file;
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no relocations need to be done to call them.
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Of course, if ld.so is not versioned... */
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@ -304,14 +309,30 @@ __elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
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there may be a little overlap at the start and the end.
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Assumes that dcbst and icbi apply to lines of 16 bytes or
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more. Current known line sizes are 16, 32, and 128 bytes. */
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more. Current known line sizes are 16, 32, and 128 bytes.
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The following gets the __cache_line_size, when available. */
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/* Default minimum 4 words per cache line. */
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int line_size_words = 4;
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/* Don't try this until ld.so has relocated itself! */
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int *line_size_ptr = &__cache_line_size;
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if (lazy && line_size_ptr != NULL)
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{
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/* Verify that __cache_line_size is defined and set. */
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if (*line_size_ptr != 0)
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/* Convert bytes to words. */
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line_size_words = *line_size_ptr / 4;
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}
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size_modified = lazy ? rel_offset_words : 6;
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for (i = 0; i < size_modified; i += 4)
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PPC_DCBST (plt + i);
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for (i = 0; i < size_modified; i += line_size_words)
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PPC_DCBST (plt + i);
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PPC_DCBST (plt + size_modified - 1);
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PPC_SYNC;
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PPC_ICBI (plt);
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for (i = 0; i < size_modified; i += line_size_words)
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PPC_ICBI (plt + i);
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PPC_ICBI (plt + size_modified - 1);
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PPC_ISYNC;
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}
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