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-rw-r--r--lib/malloc/imalloc.h178
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diff --git a/lib/malloc/imalloc.h b/lib/malloc/imalloc.h
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+++ b/lib/malloc/imalloc.h
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+/* imalloc.h -- internal malloc definitions shared by source files. */
+
+/* Copyright (C) 2001-2020 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* Must be included *after* config.h */
+
+#ifndef _IMALLOC_H
+#define _IMALLOC_H
+
+#ifdef MALLOC_DEBUG
+#define MALLOC_STATS
+#define MALLOC_TRACE
+#define MALLOC_REGISTER
+#define MALLOC_WATCH
+#endif
+
+#define MALLOC_WRAPFUNCS
+
+/* If defined, as it is by default, use the lesscore() function to attempt
+ to reduce the top of the heap when freeing memory blocks larger than a
+ defined threshold. */
+#define USE_LESSCORE
+
+/* Generic pointer type. */
+#ifndef PTR_T
+# if defined (__STDC__)
+# define PTR_T void *
+# else
+# define PTR_T char *
+# endif
+#endif
+
+#if !defined (NULL)
+# define NULL 0
+#endif
+
+#if !defined (CPP_STRING)
+# if defined (HAVE_STRINGIZE)
+# define CPP_STRING(x) #x
+# else
+# define CPP_STRING(x) "x"
+# endif /* !HAVE_STRINGIZE */
+#endif /* !__STRING */
+
+#if __GNUC__ > 1
+# define FASTCOPY(s, d, n) __builtin_memcpy (d, s, n)
+#else /* !__GNUC__ */
+# if !defined (HAVE_BCOPY)
+# if !defined (HAVE_MEMMOVE)
+# define FASTCOPY(s, d, n) memcpy (d, s, n)
+# else
+# define FASTCOPY(s, d, n) memmove (d, s, n)
+# endif /* !HAVE_MEMMOVE */
+# else /* HAVE_BCOPY */
+# define FASTCOPY(s, d, n) bcopy (s, d, n)
+# endif /* HAVE_BCOPY */
+#endif /* !__GNUC__ */
+
+#if !defined (PARAMS)
+# if defined (__STDC__) || defined (__GNUC__) || defined (__cplusplus) || defined (PROTOTYPES)
+# define PARAMS(protos) protos
+# else
+# define PARAMS(protos) ()
+# endif
+#endif
+
+/* Use Duff's device for good zeroing/copying performance. DO NOT call the
+ Duff's device macros with NBYTES == 0. */
+
+#define MALLOC_BZERO(charp, nbytes) \
+do { \
+ if ((nbytes) <= 32) { \
+ size_t * mzp = (size_t *)(charp); \
+ unsigned long mctmp = (nbytes)/sizeof(size_t); \
+ long mcn; \
+ if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp &= 7; } \
+ switch (mctmp) { \
+ case 0: for(;;) { *mzp++ = 0; \
+ case 7: *mzp++ = 0; \
+ case 6: *mzp++ = 0; \
+ case 5: *mzp++ = 0; \
+ case 4: *mzp++ = 0; \
+ case 3: *mzp++ = 0; \
+ case 2: *mzp++ = 0; \
+ case 1: *mzp++ = 0; if(mcn <= 0) break; mcn--; } \
+ } \
+ else \
+ memset ((charp), 0, (nbytes)); \
+} while(0)
+
+#define MALLOC_ZERO(charp, nbytes) \
+do { \
+ size_t mzsz = (nbytes); \
+ if (mzsz <= 9 * sizeof(mzsz) { \
+ size_t *mz = (size_t *)(charp); \
+ if(mzsz >= 5*sizeof(mzsz)) { *mz++ = 0; \
+ *mz++ = 0; \
+ if(mzsz >= 7*sizeof(mzsz)) { *mz++ = 0; \
+ *mz++ = 0; \
+ if(mzsz >= 9*sizeof(mzsz)) { *mz++ = 0; \
+ *mz++ = 0; }}} \
+ *mz++ = 0; \
+ *mz++ = 0; \
+ *mz = 0; \
+ } else \
+ memset ((charp), 0, mzsz); \
+} while (0)
+
+#define MALLOC_MEMSET(charp, xch, nbytes) \
+do { \
+ if ((nbytes) <= 32) { \
+ register char * mzp = (charp); \
+ unsigned long mctmp = (nbytes); \
+ register long mcn; \
+ if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp &= 7; } \
+ switch (mctmp) { \
+ case 0: for(;;) { *mzp++ = xch; \
+ case 7: *mzp++ = xch; \
+ case 6: *mzp++ = xch; \
+ case 5: *mzp++ = xch; \
+ case 4: *mzp++ = xch; \
+ case 3: *mzp++ = xch; \
+ case 2: *mzp++ = xch; \
+ case 1: *mzp++ = xch; if(mcn <= 0) break; mcn--; } \
+ } \
+ } else \
+ memset ((charp), (xch), (nbytes)); \
+} while(0)
+
+#define MALLOC_MEMCPY(dest,src,nbytes) \
+do { \
+ if ((nbytes) <= 32) { \
+ size_t* mcsrc = (size_t*) src; \
+ size_t* mcdst = (size_t*) dest; \
+ unsigned long mctmp = (nbytes)/sizeof(size_t); \
+ long mcn; \
+ if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp &= 7; } \
+ switch (mctmp) { \
+ case 0: for(;;) { *mcdst++ = *mcsrc++; \
+ case 7: *mcdst++ = *mcsrc++; \
+ case 6: *mcdst++ = *mcsrc++; \
+ case 5: *mcdst++ = *mcsrc++; \
+ case 4: *mcdst++ = *mcsrc++; \
+ case 3: *mcdst++ = *mcsrc++; \
+ case 2: *mcdst++ = *mcsrc++; \
+ case 1: *mcdst++ = *mcsrc++; if(mcn <= 0) break; mcn--; } \
+ } else \
+ memcpy ((dest), (src), (nbytes)) \
+} while(0)
+
+#if defined (SHELL)
+# include "bashintl.h"
+#else
+# define _(x) x
+#endif
+
+#include <signal.h>
+
+extern void _malloc_block_signals PARAMS((sigset_t *, sigset_t *));
+extern void _malloc_unblock_signals PARAMS((sigset_t *, sigset_t *));
+
+#endif /* _IMALLOC_H */