1e980b6bc8
We had two copies of the backtrace code, and two copies of the libcorkscrew /proc/pid/maps code. This patch gets us down to one. We also had hacks so we could log in the malloc debugging code. This patch pulls the non-allocating "printf" code out of the dynamic linker so everyone can share. This patch also makes the leak diagnostics easier to read, and makes it possible to paste them directly into the 'stack' tool (by using relative PCs). This patch also fixes the stdio standard stream leak that was causing a leak warning every time tf_daemon ran. Bug: 7291287 Change-Id: I66e4083ac2c5606c8d2737cb45c8ac8a32c7cfe8
102 lines
3.4 KiB
C
102 lines
3.4 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <unistd.h>
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#include <sys/cachectl.h>
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#ifdef DEBUG
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#include <private/logd.h>
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#include <private/debug_format.h>
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#define XLOG(...) __libc_format_log(ANDROID_LOG_DEBUG,"libc-cacheflush",__VA_ARGS__)
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#endif
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/*
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* Linux historically defines a cacheflush(3) routine for MIPS
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* with this signature:
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* int cacheflush(char *addr, int nbytes, int cache);
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*
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* Android defines an alternate cacheflush routine which exposes the
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* ARM system call interface:
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* int cacheflush (long start, long end, long flags)
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*
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* This is an attempt to maintain compatibility between the historical MIPS
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* usage for software previously ported to MIPS and Android specific
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* uses of cacheflush()
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*
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* Use the gcc __clear_cache builtin if possible. This will generate inline synci
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* instructions if available or call _flush_cache(start, len, BCACHE) directly
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*/
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#if defined (__GNUC__)
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#define GCC_VERSION ((__GNUC__*10000) + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__)
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#endif
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/* This is the Android signature */
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int cacheflush (long start, long end, long flags)
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{
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if (end < start) {
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/*
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* It looks like this is really MIPS style cacheflush call
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* start => addr
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* end => nbytes
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*/
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#ifdef DEBUG
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static int warned = 0;
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if (!warned) {
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XLOG("called with (start,len) instead of (start,end)");
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warned = 1;
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}
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#endif
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end += start;
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}
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#if !defined(ARCH_MIPS_USE_FLUSHCACHE_SYSCALL) && \
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defined(GCC_VERSION) && (GCC_VERSION >= 40300)
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#if (__mips_isa_rev >= 2) && (GCC_VERSION < 40403)
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/*
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* Modify "start" and "end" to avoid GCC 4.3.0-4.4.2 bug in
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* mips_expand_synci_loop that may execute synci one more time.
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* "start" points to the first byte of the cache line.
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* "end" points to the last byte of the line before the last cache line.
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* Because size is always a multiple of 4, this is safe to set
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* "end" to the last byte.
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*/
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{
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int lineSize;
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asm("rdhwr %0, $1" : "=r" (lineSize));
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start = start & (-lineSize);
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end = (end & (-lineSize)) - 1;
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}
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#endif
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__builtin___clear_cache((char *)start, (char *)end);
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#else
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_flush_cache((char *)start, end-start, BCACHE);
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#endif
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return 0;
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}
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