auto import from //depot/cupcake/@135843
diff --git a/linker/linker_debug.h b/linker/linker_debug.h
new file mode 100644
index 0000000..3cc1343
--- /dev/null
+++ b/linker/linker_debug.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _LINKER_DEBUG_H_
+#define _LINKER_DEBUG_H_
+
+#include <stdio.h>
+
+/* WARNING: For linker debugging only.. Be careful not to leave any of
+ * this on when submitting back to repository */
+#define LINKER_DEBUG 0
+#define TRACE_DEBUG 0
+#define DO_TRACE_LOOKUP 0
+#define DO_TRACE_RELO 0
+#define TIMING 0
+#define STATS 0
+#define COUNT_PAGES 0
+
+/*********************************************************************
+ * You shouldn't need to modify anything below unless you are adding
+ * more debugging information.
+ *
+ * To enable/disable specific debug options, change the defines above
+ *********************************************************************/
+
+
+/*********************************************************************/
+#undef TRUE
+#undef FALSE
+#define TRUE 1
+#define FALSE 0
+
+
+#define __PRINTVF(v,f,x...) do { \
+ (debug_verbosity > (v)) && (printf(x), ((f) && fflush(stdout))); \
+ } while (0)
+/* Only use printf() during debugging. We have seen occasional memory
+ * corruption when the linker uses printf().
+ */
+#if LINKER_DEBUG
+extern int debug_verbosity;
+#warning "*** LINKER IS USING printf(); DO NOT CHECK THIS IN ***"
+#define _PRINTVF(v,f,x...) __PRINTVF(v,f,x)
+#else /* !LINKER_DEBUG */
+#define _PRINTVF(v,f,x...) do {} while(0)
+#endif /* LINKER_DEBUG */
+
+#define PRINT(x...) _PRINTVF(-1, FALSE, x)
+#define INFO(x...) _PRINTVF(0, TRUE, x)
+#define TRACE(x...) _PRINTVF(1, TRUE, x)
+#define WARN(fmt,args...) \
+ _PRINTVF(-1, TRUE, "%s:%d| WARNING: " fmt, __FILE__, __LINE__, ## args)
+#define ERROR(fmt,args...) \
+ __PRINTVF(-1, TRUE, "%s:%d| ERROR: " fmt, __FILE__, __LINE__, ## args)
+
+#if TRACE_DEBUG
+#define DEBUG(x...) _PRINTVF(2, TRUE, "DEBUG: " x)
+#else /* !TRACE_DEBUG */
+#define DEBUG(x...) do {} while (0)
+#endif /* TRACE_DEBUG */
+
+#if LINKER_DEBUG
+#define TRACE_TYPE(t,x...) do { if (DO_TRACE_##t) { TRACE(x); } } while (0)
+#else /* !LINKER_DEBUG */
+#define TRACE_TYPE(t,x...) do {} while (0)
+#endif /* LINKER_DEBUG */
+
+#if STATS
+#define RELOC_ABSOLUTE 0
+#define RELOC_RELATIVE 1
+#define RELOC_COPY 2
+#define RELOC_SYMBOL 3
+#define NUM_RELOC_STATS 4
+
+struct _link_stats {
+ int reloc[NUM_RELOC_STATS];
+};
+extern struct _link_stats linker_stats;
+
+#define COUNT_RELOC(type) \
+ do { if (type >= 0 && type < NUM_RELOC_STATS) { \
+ linker_stats.reloc[type] += 1; \
+ } else { \
+ PRINT("Unknown reloc stat requested\n"); \
+ } \
+ } while(0)
+#else /* !STATS */
+#define COUNT_RELOC(type) do {} while(0)
+#endif /* STATS */
+
+#if TIMING
+#undef WARN
+#define WARN(x...) do {} while (0)
+#endif /* TIMING */
+
+#if COUNT_PAGES
+extern unsigned bitmask[];
+#define MARK(offset) do { \
+ bitmask[((offset) >> 12) >> 3] |= (1 << (((offset) >> 12) & 7)); \
+ } while(0)
+#else
+#define MARK(x) do {} while (0)
+#endif
+
+#define DEBUG_DUMP_PHDR(phdr, name, pid) do { \
+ DEBUG("%5d %s (phdr = 0x%08x)\n", (pid), (name), (unsigned)(phdr)); \
+ DEBUG("\t\tphdr->offset = 0x%08x\n", (unsigned)((phdr)->p_offset)); \
+ DEBUG("\t\tphdr->p_vaddr = 0x%08x\n", (unsigned)((phdr)->p_vaddr)); \
+ DEBUG("\t\tphdr->p_paddr = 0x%08x\n", (unsigned)((phdr)->p_paddr)); \
+ DEBUG("\t\tphdr->p_filesz = 0x%08x\n", (unsigned)((phdr)->p_filesz)); \
+ DEBUG("\t\tphdr->p_memsz = 0x%08x\n", (unsigned)((phdr)->p_memsz)); \
+ DEBUG("\t\tphdr->p_flags = 0x%08x\n", (unsigned)((phdr)->p_flags)); \
+ DEBUG("\t\tphdr->p_align = 0x%08x\n", (unsigned)((phdr)->p_align)); \
+ } while (0)
+
+#endif /* _LINKER_DEBUG_H_ */