[PATCH 26/39] NLKD - run time library

["Jan Beulich" <JBeulich@novell.com>]

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Some support definitions and routines of NLKD, the latter primarily to
isolate the debugger code from the rest of the kernel.

Signed-Off-By: Jan Beulich <jbeulich@novell.com>

(actual patch attached)


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Some support definitions and routines of NLKD, the latter primarily to
isolate the debugger code from the rest of the kernel.

Signed-Off-By: Jan Beulich <jbeulich@novell.com>

Index: 2.6.14-nlkd/debug/nlkd/dbgutil.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ 2.6.14-nlkd/debug/nlkd/dbgutil.c	2005-06-27 11:57:55.000000000 +0200
@@ -0,0 +1,89 @@
+/*****************************************************************************
+ *
+ *   File Name:      dbgutil.c
+ *   Created by:     Jan Beulich
+ *   Date created:   21Jul1999
+ *
+ *   %version:       5 %
+ *   %derived_by:    jbeulich %
+ *   %date_modified: Mon Jun 27 03:57:44 2005 %
+ *
+ *****************************************************************************/
+/*****************************************************************************
+ *                                                                           *
+ * Copyright (c) 1999-2005 Novell, Inc. All Rights Reserved.                 *
+ *                                                                           *
+ * This program is free software; you can redistribute it and/or             *
+ * modify it under the terms of version 2 of the GNU General Public License  *
+ * as published by the Free Software Foundation.                             *
+ *                                                                           *
+ * This program 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 this program; if not, contact Novell, Inc.                     *
+ *                                                                           *
+ * To contact Novell about this file by physical or electronic mail,         *
+ * you may find current contact information at www.novell.com.               *
+ *                                                                           *
+ *****************************************************************************/
+/*****************************************************************************
+ *
+ *	File Description:
+ *
+ *****************************************************************************/
+
+#include <linux/debugrtl.h>
+
+#if !defined(_M_IA64) && !defined(__ia64__) \
+ && !defined(_M_IX86) && !defined(__i386__) \
+ && !defined(_M_AMD64) && !defined(__x86_64__)
+asmlinkage DbgQuotRemS dbgDivideS(nint_t numer, nint_t denom) {
+	DbgQuotRemS sd;
+
+	if (denom == 1)
+	{
+		sd.quot = numer;
+		sd.rem  = 0;
+	}
+	else if (denom == -1)
+	{
+		sd.quot = -numer;
+		sd.rem  = 0;
+	}
+	else
+	{
+		sd.quot = numer / denom;
+		sd.rem  = numer % denom;
+	}
+
+	return sd;
+}
+
+asmlinkage DbgQuotRemU dbgDivideU(nuint_t numer, nuint_t denom) {
+	DbgQuotRemU ud;
+
+	if (denom == 1)
+	{
+		ud.quot = numer;
+		ud.rem  = 0;
+	}
+	else
+	{
+		ud.quot = numer / denom;
+		ud.rem  = numer % denom;
+	}
+	return ud;
+}
+#endif
+
+asmlinkage char*dbgCatStr(char*dst, const char*src) {
+	dbgCopyStr(dst + dbgCountStr(dst), src);
+	return dst;
+}
+
+#include <linux/module.h>
+#define DEBUGRTL_EXPORT(type, name, ...) EXPORT_SYMBOL(name)
+#include <linux/debugrtl.h>
Index: 2.6.14-nlkd/include/linux/debugrtl.h
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ 2.6.14-nlkd/include/linux/debugrtl.h	2005-11-03 12:03:04.000000000 +0100
@@ -0,0 +1,170 @@
+/*****************************************************************************
+ *
+ *   File Name:      debugrtl.h
+ *   Created by:     Jan Beulich
+ *   Date created:   21Jul1999
+ *
+ *   %version:       9 %
+ *   %derived_by:    jbeulich %
+ *   %date_modified: Thu Nov 03 04:02:51 2005 %
+ *
+ *****************************************************************************/
+/*****************************************************************************
+ *                                                                           *
+ * Copyright (c) 1999-2005 Novell, Inc. All Rights Reserved.                 *
+ *                                                                           *
+ * This program is free software; you can redistribute it and/or             *
+ * modify it under the terms of version 2 of the GNU General Public License  *
+ * as published by the Free Software Foundation.                             *
+ *                                                                           *
+ * This program 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 this program; if not, contact Novell, Inc.                     *
+ *                                                                           *
+ * To contact Novell about this file by physical or electronic mail,         *
+ * you may find current contact information at www.novell.com.               *
+ *                                                                           *
+ *****************************************************************************/
+/*****************************************************************************
+ *
+ *	File Description:
+ *
+ *****************************************************************************/
+#if !defined(_LINUX_DEBUGRTL_H) || defined(DEBUGRTL_EXPORT)
+
+#ifndef _LINUX_DEBUGRTL_H
+
+# include <linux/config.h>
+# include <linux/linkage.h>
+# include <linux/nint.h>
+
+# define mkalign(d, a) (((d) + ((a) - 1)) & ~((a) - 1))
+# define countof(a) (sizeof(a) / sizeof(*a))
+# define field_sizeof(t, f) (sizeof(((t*)0)->f))
+# define field_countof(t, a) (countof(((t*)0)->a))
+# define field_end(t, f) (offsetof(t, f) + field_sizeof(t, f))
+# define field_typeof(t, f) __typeof__(((t*)0)->f)
+
+# ifdef CONFIG_64BIT
+typedef uint64_t bitvec_t;
+#  define BITVEC_INDEX_SHIFT 6
+# else
+typedef uint32_t bitvec_t;
+#  define BITVEC_INDEX_SHIFT 5
+# endif
+
+# define BITVEC_INDEX_MASK ((1U << BITVEC_INDEX_SHIFT) - 1)
+
+# define BITVEC_SZ(n)	(((n) + BITVEC_INDEX_MASK) >> BITVEC_INDEX_SHIFT)
+# define BITVEC_CLR(p, n)	(((bitvec_t*)(p))[(n) >> BITVEC_INDEX_SHIFT] &= ~((bitvec_t)1 << ((n) & BITVEC_INDEX_MASK)))
+# define BITVEC_SET(p, n)	(((bitvec_t*)(p))[(n) >> BITVEC_INDEX_SHIFT] |=  ((bitvec_t)1 << ((n) & BITVEC_INDEX_MASK)))
+# define BITVEC_TST(p, n)	((((bitvec_t*)(p))[(n) >> BITVEC_INDEX_SHIFT] >> ((n) & BITVEC_INDEX_MASK)) & 1)
+
+typedef struct {
+	nint_t quot;
+	nint_t rem;
+} DbgQuotRemS;
+
+typedef struct {
+	nuint_t quot;
+	nuint_t rem;
+} DbgQuotRemU;
+
+# define DEBUGRTL_EXPORT(type, name, ...) type name(__VA_ARGS__)
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+#endif /* _LINUX_DEBUGRTL_H */
+
+DEBUGRTL_EXPORT(asmlinkage char*, dbgCatStr, char*, const char*);
+DEBUGRTL_EXPORT(asmlinkage int, dbgCompareMem, const void*, const void*, size_t);
+DEBUGRTL_EXPORT(asmlinkage int, dbgCompareStr, const char*, const char*);
+DEBUGRTL_EXPORT(           void*, dbgCopyMem, void*, const void*, size_t);
+DEBUGRTL_EXPORT(asmlinkage char*, dbgCopyStr, char*, const char*);
+DEBUGRTL_EXPORT(asmlinkage char*, dbgCopyStrP, char*, const char*);
+DEBUGRTL_EXPORT(asmlinkage unsigned, dbgCountBits, uint64_t);
+DEBUGRTL_EXPORT(asmlinkage size_t, dbgCountStr, const char*);
+DEBUGRTL_EXPORT(asmlinkage size_t, dbgCountWstr, const wchar_t*);
+DEBUGRTL_EXPORT(asmlinkage DbgQuotRemS, dbgDivideS, nint_t, nint_t);
+DEBUGRTL_EXPORT(asmlinkage DbgQuotRemU, dbgDivideU, nuint_t, nuint_t);
+DEBUGRTL_EXPORT(           void*, dbgFillMem, void*, int, size_t);
+DEBUGRTL_EXPORT(asmlinkage void*, dbgFindByte, const void*, int, size_t);
+DEBUGRTL_EXPORT(asmlinkage char*, dbgFindChar, const char*, int);
+DEBUGRTL_EXPORT(asmlinkage uint8_t*, dbgFindInt8, const uint8_t*, uint8_t, size_t);
+DEBUGRTL_EXPORT(asmlinkage uint16_t*, dbgFindInt16, const uint16_t*, uint16_t, size_t);
+DEBUGRTL_EXPORT(asmlinkage uint32_t*, dbgFindInt32, const uint32_t*, uint32_t, size_t);
+#ifdef CONFIG_64BIT
+DEBUGRTL_EXPORT(asmlinkage uint64_t*, dbgFindInt64, const uint64_t*, uint64_t, size_t);
+#endif
+DEBUGRTL_EXPORT(asmlinkage nuint_t*, dbgFindIntN, const nuint_t*, nuint_t, size_t);
+DEBUGRTL_EXPORT(asmlinkage void**, dbgFindPtr, const void*const*, const void*, size_t);
+DEBUGRTL_EXPORT(asmlinkage wchar_t*, dbgFindWchar, const wchar_t*, wchar_t);
+#undef dbgLower
+DEBUGRTL_EXPORT(asmlinkage int, dbgLower, int);
+DEBUGRTL_EXPORT(asmlinkage nint_t, dbgLog2, uint64_t);
+DEBUGRTL_EXPORT(asmlinkage uint64_t, dbgMultiply, uint64_t, uint64_t, uint64_t*overflow);
+DEBUGRTL_EXPORT(asmlinkage uint8_t, dbgRotl8, uint8_t, nuint_t);
+DEBUGRTL_EXPORT(asmlinkage uint16_t, dbgRotl16, uint16_t, nuint_t);
+DEBUGRTL_EXPORT(asmlinkage uint32_t, dbgRotl32, uint32_t, nuint_t);
+DEBUGRTL_EXPORT(asmlinkage uint64_t, dbgRotl64, uint64_t, nuint_t);
+DEBUGRTL_EXPORT(asmlinkage uint8_t, dbgRotr8, uint8_t, nuint_t);
+DEBUGRTL_EXPORT(asmlinkage uint16_t, dbgRotr16, uint16_t, nuint_t);
+DEBUGRTL_EXPORT(asmlinkage uint32_t, dbgRotr32, uint32_t, nuint_t);
+DEBUGRTL_EXPORT(asmlinkage uint64_t, dbgRotr64, uint64_t, nuint_t);
+#undef dbgUpper
+DEBUGRTL_EXPORT(asmlinkage int, dbgUpper, int);
+DEBUGRTL_EXPORT(asmlinkage char*, dbgWstr2Str, char*, const wchar_t*);
+DEBUGRTL_EXPORT(           void*, dbgZeroMem, void*, size_t);
+
+#ifndef _LINUX_DEBUGRTL_H
+
+# ifdef __cplusplus
+
+inline int dbgLower(int c) { return c >= 'A' && c <= 'Z' ? c + 'a' - 'A' : c; }
+inline int dbgUpper(int c) { return c >= 'a' && c <= 'z' ? c + 'A' - 'a' : c; }
+
+}
+
+# endif
+
+//todo The .global in the following constructs is just a workaround for a bug
+//     in binutils shipped with SL 10.0. This will *ONLY* work if the producer
+//     doesn't include this file (which currently is the case because all
+//     producers are assembly files) - otherwise we'll end up with, say, a
+//     global memcpy defined there and colliding with or overriding the real
+//     one from the kernel's strings library code.
+__asm__(".equiv memcpy, dbgCopyMem\n\t.global memcpy");
+__asm__(".equiv memset, dbgFillMem\n\t.global memset");
+
+# define DEBUGRTL_ALIAS(name) __asm__(".equiv " #name ", dbg" #name "\n\t.global " #name)
+
+# define _LINUX_DEBUGRTL_H
+
+#else
+
+# define DEBUGRTL_ALIAS(name) void dbg##name(void); DEBUGRTL_EXPORT(void, dbg##name, void)
+
+#endif /* _LINUX_DEBUGRTL_H */
+
+#ifndef __cplusplus
+# define dbgLower(c) ((c) >= 'A' && (c) <= 'Z' ? (c) + 'a' - 'A' : (c))
+# define dbgUpper(c) ((c) >= 'a' && (c) <= 'z' ? (c) + 'A' - 'a' : (c))
+#endif
+
+#if defined(__i386__)
+DEBUGRTL_ALIAS(__divdi3);
+DEBUGRTL_ALIAS(__moddi3);
+DEBUGRTL_ALIAS(__udivdi3);
+DEBUGRTL_ALIAS(__umoddi3);
+#endif
+
+#undef DEBUGRTL_ALIAS
+#undef DEBUGRTL_EXPORT
+
+#endif /* !_LINUX_DEBUGRTL_H || DEBUGRTL_EXPORT */