| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <200808290547.m7T5lfXR016131@wolfmountaingroup.com>
Date: Thu, 28 Aug 2008 23:47:41 -0600
From: jmerkey@...fmountaingroup.com
To: linux-kernel@...r.kernel.org
Subject: [PATCH 2.6.27-rc5 16/29] mdb: add mdb-logic.c math parser for Merkey's Linux Kernel Debugger
add mdb-logic.c math parser for Merkey's Linux Kernel Debugger
Signed-off-by: Jeffrey Vernon Merkey (jmerkey@...fmountaingroup.com)
--- a/debug/mdb/mdb-logic.c 1969-12-31 17:00:00.000000000 -0700
+++ b/debug/mdb/mdb-logic.c 2008-08-28 14:20:04.000000000 -0600
@@ -0,0 +1,2375 @@
+
+/***************************************************************************
+*
+* Copyright (c) 2008 Jeff V. Merkey All Rights Reserved.
+* 1058 East 50 South
+* Lindon, Utah 84042
+* jmerkey@...fmountaingroup.com
+*
+* This program 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, version 2.
+*
+* 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 are free to modify and re-distribute this program in accordance
+* with the terms specified in the GNU Public License. The copyright
+* contained in this code is required to be present in any derivative
+* works and you are required to provide the source code for this
+* program as part of any commercial or non-commercial distribution.
+* You are required to respect the rights of the Copyright holders
+* named within this code.
+*
+* jmerkey@...fmountaingroup.com is the official maintainer of
+* this code. You are encouraged to report any bugs, problems, fixes,
+* suggestions, and comments about this software.
+*
+* AUTHOR : Jeff V. Merkey
+* DESCRIP : Merkey's Linux Debugger
+*
+***************************************************************************/
+
+#include <linux/version.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/genhd.h>
+#include <linux/hdreg.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <linux/mm.h>
+#include <linux/cdrom.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/ctype.h>
+#include <linux/keyboard.h>
+#include <linux/console.h>
+#include <linux/serial_reg.h>
+#include <linux/uaccess.h>
+#include <asm/system.h>
+#include <asm/segment.h>
+#include <asm/atomic.h>
+#include <asm/msr.h>
+#include <linux/io.h>
+
+#ifdef CONFIG_SMP
+#include <mach_apic.h>
+#include <mach_ipi.h>
+#endif
+
+#define __KERNEL_SYSCALLS__
+#include <linux/unistd.h>
+#include <linux/kallsyms.h>
+
+#include "mdb.h"
+#include "mdb-ia32.h"
+#include "mdb-list.h"
+#include "mdb-ia32-proc.h"
+#include "mdb-base.h"
+#include "mdb-proc.h"
+#include "mdb-os.h"
+#include "mdb-keyboard.h"
+
+#define PROCESSOR_32 32
+#define PROCESSOR_64 64
+
+#define DEBUG_EXPRESS 0
+#define DEBUG_BOOL 0
+#define DEBUG_LOGICAL 0
+#define DEBUG_LOGICAL_STACK 0
+#define DEBUG_BOOL_STACK 0
+
+#define INVALID_EXPRESSION 0
+#define NUMERIC_EXPRESSION 1
+#define BOOLEAN_EXPRESSION 2
+
+#define NUM_STACK_SIZE 256
+#define CONTEXT_STACK_SIZE 1024
+#define BOOL_STACK_SIZE 256
+#define LOGICAL_STACK_SIZE 256
+
+#define NULL_TOKEN 0
+#define NUMBER_TOKEN 1
+#define MINUS_TOKEN 2
+#define PLUS_TOKEN 3
+#define MULTIPLY_TOKEN 4
+#define DIVIDE_TOKEN 5
+#define GREATER_TOKEN 6
+#define LESS_TOKEN 7
+#define XOR_TOKEN 8
+#define AND_TOKEN 9
+#define OR_TOKEN 10
+#define NOT_TOKEN 11
+#define NEG_TOKEN 12
+#define EQUAL_TOKEN 13
+#define LEFT_SHIFT_TOKEN 14
+#define RIGHT_SHIFT_TOKEN 15
+#define SPACE_TOKEN 16
+#define FLAGS_TOKEN 17
+#define EAX_TOKEN 18
+#define EBX_TOKEN 19
+#define ECX_TOKEN 20
+#define EDX_TOKEN 21
+#define ESI_TOKEN 22
+#define EDI_TOKEN 23
+#define EBP_TOKEN 24
+#define ESP_TOKEN 25
+#define CS_TOKEN 26
+#define DS_TOKEN 27
+#define ES_TOKEN 28
+#define FS_TOKEN 29
+#define GS_TOKEN 30
+#define SS_TOKEN 31
+#define DREF_OPEN_TOKEN 32
+#define DREF_CLOSE_TOKEN 33
+#define MOD_TOKEN 34
+#define NUMBER_END 35
+#define GREATER_EQUAL_TOKEN 36
+#define LESS_EQUAL_TOKEN 37
+#define EIP_TOKEN 38
+#define ASSIGNMENT_TOKEN 39
+#define DWORD_TOKEN 40
+#define WORD_TOKEN 41
+#define BYTE_TOKEN 42
+#define LOGICAL_AND_TOKEN 43
+#define LOGICAL_OR_TOKEN 44
+#define CF_TOKEN 45
+#define PF_TOKEN 46
+#define AF_TOKEN 47
+#define ZF_TOKEN 48
+#define SF_TOKEN 49
+#define IF_TOKEN 50
+#define DF_TOKEN 51
+#define OF_TOKEN 52
+#define VM_TOKEN 53
+#define AC_TOKEN 54
+#define BB_TOKEN 55
+#define EB_TOKEN 56
+#define NOT_EQUAL_TOKEN 57
+#define INVALID_NUMBER_TOKEN 58
+
+#define CF_FLAG 0x00000001
+#define PF_FLAG 0x00000004
+#define AF_FLAG 0x00000010
+#define ZF_FLAG 0x00000040
+#define SF_FLAG 0x00000080
+#define TF_FLAG 0x00000100 /* ss flag */
+#define IF_FLAG 0x00000200
+#define DF_FLAG 0x00000400
+#define OF_FLAG 0x00000800
+#define NT_FLAG 0x00004000
+#define RF_FLAG 0x00010000 /* resume flag */
+#define VM_FLAG 0x00020000
+#define AC_FLAG 0x00040000
+#define VIF_FLAG 0x00080000
+#define VIP_FLAG 0x00100000
+#define ID_FLAG 0x00200000
+
+#define ULONG_PTR 0
+#define WORD_PTR 1
+#define BYTE_PTR 2
+
+#define CLASS_DATA 1
+#define CLASS_ASSIGN 2
+#define CLASS_PARTITION 3
+#define CLASS_ARITHMETIC 4
+#define CLASS_BOOLEAN 5
+
+unsigned char *exprDescription[]={
+ "INVALID",
+ "NUMERIC",
+ "BOOLEAN",
+ "???????",
+};
+
+unsigned char *parserDescription[]={
+ "NULL_TOKEN",
+ "NUMBER_TOKEN",
+ "MINUS_TOKEN",
+ "PLUS_TOKEN",
+ "MULTIPLY_TOKEN",
+ "DIVIDE_TOKEN",
+ "GREATER_TOKEN",
+ "LESS_TOKEN",
+ "XOR_TOKEN",
+ "AND_TOKEN",
+ "OR_TOKEN",
+ "NOT_TOKEN",
+ "NEG_TOKEN",
+ "EQUAL_TOKEN",
+ "LEFT_SHIFT_TOKEN",
+ "RIGHT_SHIFT_TOKEN",
+ "SPACE_TOKEN",
+ "FLAGS_TOKEN",
+ "EAX_TOKEN",
+ "EBX_TOKEN",
+ "ECX_TOKEN",
+ "EDX_TOKEN",
+ "ESI_TOKEN",
+ "EDI_TOKEN",
+ "EBP_TOKEN",
+ "ESP_TOKEN",
+ "CS_TOKEN",
+ "DS_TOKEN",
+ "ES_TOKEN",
+ "FS_TOKEN",
+ "GS_TOKEN",
+ "SS_TOKEN",
+ "DREF_OPEN_TOKEN",
+ "DREF_CLOSE_TOKEN",
+ "MOD_TOKEN",
+ "NUMBER_END",
+ "GREATER_EQUAL_TOKEN",
+ "LESS_EQUAL_TOKEN",
+ "EIP_TOKEN",
+ "ASSIGNMENT_TOKEN",
+ "Dunsigned short_TOKEN",
+ "unsigned short_TOKEN",
+ "unsigned char_TOKEN",
+ "LOGICAL_AND_TOKEN",
+ "LOGICAL_OR_TOKEN",
+ "CF_TOKEN",
+ "PF_TOKEN",
+ "AF_TOKEN",
+ "ZF_TOKEN",
+ "SF_TOKEN",
+ "IF_TOKEN",
+ "DF_TOKEN",
+ "OF_TOKEN",
+ "VM_TOKEN",
+ "AC_TOKEN",
+ "BEGIN_BRACKET",
+ "END_BRACKET",
+ "NOT_EQUAL_TOKEN"
+ "INVALID_NUMBER_TOKEN"
+};
+
+unsigned char TokenIndex[256];
+unsigned char TokenClass[256];
+unsigned char TokenType[256];
+unsigned long TokenValue[256];
+unsigned long TokenCount;
+
+unsigned long numStack[NUM_STACK_SIZE];
+unsigned long *sp;
+unsigned long *tos;
+unsigned long *bos;
+
+unsigned long contextStack[CONTEXT_STACK_SIZE];
+unsigned long *c_sp;
+unsigned long *c_tos;
+unsigned long *c_bos;
+
+unsigned long booleanStack[BOOL_STACK_SIZE];
+unsigned long *b_sp;
+unsigned long *b_tos;
+unsigned long *b_bos;
+
+unsigned long logicalStack[LOGICAL_STACK_SIZE];
+unsigned long *l_sp;
+unsigned long *l_tos;
+unsigned long *l_bos;
+
+extern unsigned long GetValueFromSymbol(unsigned char *symbolName);
+extern unsigned char delim_table[256];
+
+#ifdef LINUX_DRIVER
+spinlock_t expressLock = SPIN_LOCK_UNLOCKED;
+static long flags;
+#endif
+
+unsigned long GetNumber(unsigned char *p, unsigned char **rp, unsigned long *opl, unsigned long *retCode, unsigned long mode)
+{
+
+ unsigned char *op, *pp = NULL;
+ unsigned long c = 0, decimal = 0, hex_found = 0, invalid = 0, valid = 0;
+
+ pp = op = p;
+ while (*p)
+ {
+ if (*p == 'X' || *p == 'x')
+ {
+ hex_found = 1;
+ p++;
+ pp = p;
+ }
+
+ if (*p >= '0' && *p <= '9')
+ {
+ valid++;
+ p++;
+ }
+ else
+ if (*p >= 'A' && *p <= 'F')
+ {
+ hex_found = 1;
+ valid++;
+ p++;
+ }
+ else
+ if (*p >= 'a' && *p <= 'f')
+ {
+ hex_found = 1;
+ valid++;
+ p++;
+ }
+ else
+ if ((*p == 'R') || (*p == 'r'))
+ {
+ decimal = 1;
+ p++;
+ }
+ else
+ if (delim_table[((*p) & 0xFF)])
+ break;
+ else
+ {
+ invalid = 1;
+ break;
+ }
+ }
+
+ if (rp)
+ *rp = p;
+ if (opl)
+ *opl = (unsigned long)((unsigned long)p - (unsigned long) op);
+
+ if (invalid && !valid)
+ {
+ if (retCode)
+ *retCode = -1; /* invalid string */
+ return 0;
+ }
+
+ p = pp;
+
+ if (mode)
+ decimal = 1;
+
+ if (decimal)
+ {
+ /* parse as decimal number */
+ while (*p)
+ {
+ if (*p >= '0' && *p <= '9')
+ c = (c * 10) + (*p - '0');
+ else
+ break;
+ p++;
+ }
+ }
+ else
+ if (hex_found)
+ {
+ /* parse as hex number */
+ while (*p)
+ {
+ if (*p >= '0' && *p <= '9')
+ c = (c << 4) | (*p - '0');
+ else if (*p >= 'A' && *p <= 'F')
+ c = (c << 4) | (*p - 'A' + 10);
+ else if (*p >= 'a' && *p <= 'f')
+ c = (c << 4) | (*p - 'a' + 10);
+ else
+ break;
+ p++;
+ }
+ }
+ else /* default parses as hex */
+ {
+ /* parse as hex number */
+ while (*p)
+ {
+ if (*p >= '0' && *p <= '9')
+ c = (c << 4) | (*p - '0');
+ else if (*p >= 'A' && *p <= 'F')
+ c = (c << 4) | (*p - 'A' + 10);
+ else if (*p >= 'a' && *p <= 'f')
+ c = (c << 4) | (*p - 'a' + 10);
+ else
+ break;
+ p++;
+ }
+ }
+
+ if (retCode)
+ *retCode = 0;
+
+ return (c);
+
+}
+
+
+unsigned char *parseTokens(StackFrame *stackFrame, unsigned char *p, unsigned long mode)
+{
+
+ register unsigned long i, value;
+ unsigned char symbol[256], *s;
+ unsigned char *tmp, *op;
+ unsigned long delta, retCode = 0;
+
+ op = p;
+ TokenCount = 0;
+ while (TokenCount < 200 && (unsigned long)p - (unsigned long)op < 200)
+ {
+ if (isalpha(*p) || *p == '_' || *p == '@' || *p == '$')
+ {
+ s = p;
+ for (i = 0; i < 255; i++)
+ {
+ if (delim_table[((s[i]) & 0xFF)])
+ break;
+
+ if (!isprint(s[i]))
+ break;
+
+ symbol[i] = s[i];
+ }
+ symbol[i] = '\0';
+
+ value = GetValueFromSymbol(symbol);
+ if (value)
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = value;
+ TokenType[TokenCount++] = NUMBER_TOKEN;
+ p = &s[i]; /* bump the pointer past the symbol */
+ }
+ }
+
+ if (stackFrame)
+ {
+ switch (*p)
+ {
+
+ case '\0':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = NULL_TOKEN;
+ return (p);
+
+ case ']':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DREF_CLOSE_TOKEN;
+ p++;
+ break;
+
+ case '(':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = BB_TOKEN;
+ p++;
+ break;
+
+ case ')':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EB_TOKEN;
+ p++;
+ break;
+
+ case '+':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = PLUS_TOKEN;
+ p++;
+ break;
+
+ case '-':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = MINUS_TOKEN;
+ p++;
+ break;
+
+ case '*':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = MULTIPLY_TOKEN;
+ p++;
+ break;
+
+ case '/':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DIVIDE_TOKEN;
+ p++;
+ break;
+
+ case '%':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = MOD_TOKEN;
+ p++;
+ break;
+
+ case '~':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = NEG_TOKEN;
+ p++;
+ break;
+
+ case '^':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = XOR_TOKEN;
+ p++;
+ break;
+
+ case '!':
+ p++;
+ if (*p == '=')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = NOT_EQUAL_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = NOT_TOKEN;
+ break;
+
+ case ' ': /* drop spaces on the floor */
+ p++;
+ break;
+
+ /*
+ * These cases require special handling
+ */
+
+ case 'p':
+ case 'P':
+ p++;
+ if (*p == 'F' || *p == 'f')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & PF_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = PF_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case 'z':
+ case 'Z':
+ p++;
+ if (*p == 'F' || *p == 'f')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & ZF_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = ZF_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case 'i':
+ case 'I':
+ p++;
+ if (*p == 'F' || *p == 'f')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & IF_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = IF_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case 'o':
+ case 'O':
+ p++;
+ if (*p == 'F' || *p == 'f')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & OF_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = OF_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case 'v':
+ case 'V':
+ p++;
+ if (*p == 'M' || *p == 'm')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & VM_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = VM_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case 'x':
+ case 'X':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode, mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+
+ case 'a':
+ case 'A':
+ tmp = p;
+ tmp++;
+ if ((*tmp == 'F' || *tmp == 'f') && (*(tmp + 1) == ' ' || *(tmp + 1) == '=' ))
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & AF_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = AF_TOKEN;
+ p++;
+ p++;
+ break;
+ }
+ if ((*tmp == 'C' || *tmp == 'c') && (*(tmp + 1) == ' ' || *(tmp + 1) == '=' ))
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & AC_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = AC_TOKEN;
+ p++;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode, mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+
+
+ case 'b':
+ case 'B':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode, mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+
+ case 'c':
+ case 'C':
+ tmp = p;
+ tmp++;
+ if (*tmp == 'S' || *tmp == 's')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tCS;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = CS_TOKEN;
+ p++;
+ p++;
+ break;
+ }
+ if ((*tmp == 'F' || *tmp == 'f') && (*(tmp + 1) == ' ' || *(tmp + 1) == '=' ))
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & CF_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = CF_TOKEN;
+ p++;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode, mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+
+ case 'd':
+ case 'D':
+ tmp = p;
+ tmp++;
+ if (*tmp == 'S' || *tmp == 's')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tDS;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DS_TOKEN;
+ p++;
+ p++;
+ break;
+ }
+ if ((*tmp == 'F' || *tmp == 'f') && (*(tmp + 1) == ' ' || *(tmp + 1) == '=' ))
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & DF_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DF_TOKEN;
+ p++;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode, mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+
+ case 'e':
+ case 'E':
+ tmp = p;
+ tmp++;
+ if (*tmp == 'A' || *tmp == 'a')
+ {
+ tmp++;
+ if (*tmp == 'X' || *tmp == 'x')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tEAX;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EAX_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode,
+ mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+ }
+ if (*tmp == 'B' || *tmp == 'b')
+ {
+ tmp++;
+ if (*tmp == 'X' || *tmp == 'x')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tEBX;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EBX_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ if (*tmp == 'P' || *tmp == 'p')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tEBP;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EBP_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode,
+ mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+ }
+ if (*tmp == 'C' || *tmp == 'c')
+ {
+ tmp++;
+ if (*tmp == 'X' || *tmp == 'x')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tECX;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = ECX_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode,
+ mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+ }
+ if (*tmp == 'D' || *tmp == 'd')
+ {
+ tmp++;
+ if (*tmp == 'X' || *tmp == 'x')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tEDX;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EDX_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ if (*tmp == 'I' || *tmp == 'i')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tEDI;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EDI_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode,
+ mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+ }
+ if (*tmp == 'S' || *tmp == 's')
+ {
+ tmp++;
+ if (*tmp == 'P' || *tmp == 'p')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tESP;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = ESP_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ if (*tmp == 'I' || *tmp == 'i')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tESI;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = ESI_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tES;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = ES_TOKEN;
+ p++;
+ p++;
+ break;
+ }
+ if (*tmp == 'I' || *tmp == 'i')
+ {
+ tmp++;
+ if (*tmp == 'P' || *tmp == 'p')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tEIP;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EIP_TOKEN;
+ p++;
+ p++;
+ p++;
+ break;
+ }
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode, mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+
+ case 'f':
+ case 'F':
+ tmp = p;
+ tmp++;
+ if (*tmp == 'S' || *tmp == 's')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tFS;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = FS_TOKEN;
+ p++;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode, mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+
+ case 'g':
+ case 'G': /* GS */
+ p++;
+ if (*p == 'S' || *p == 's')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tGS;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = GS_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case 's':
+ case 'S':
+ p++;
+ if (*p == 'S' || *p == 's')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSS;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = SS_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == 'F' || *p == 'f')
+ {
+ if (stackFrame)
+ TokenValue[TokenCount] = stackFrame->tSystemFlags & SF_FLAG;
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = SF_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case '[':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DREF_OPEN_TOKEN;
+ p++;
+ if (*p == 'D' || *p == 'd')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DWORD_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == 'W' || *p == 'w')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = WORD_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == 'B' || *p == 'b')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = BYTE_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case '=':
+ p++;
+ if (*p == '=')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EQUAL_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = ASSIGNMENT_TOKEN;
+ break;
+
+ case '<':
+ p++;
+ if (*p == '<')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LEFT_SHIFT_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == '=')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LESS_EQUAL_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LESS_TOKEN;
+ break;
+
+ case '>':
+ p++;
+ if (*p == '>')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = RIGHT_SHIFT_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == '=')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = GREATER_EQUAL_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = GREATER_TOKEN;
+ break;
+
+ case '|':
+ p++;
+ if (*p == '|')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LOGICAL_OR_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = OR_TOKEN;
+ break;
+
+ case '&':
+ p++;
+ if (*p == '&')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LOGICAL_AND_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = AND_TOKEN;
+ break;
+
+ default: /* if we get a default, drop the character on the floor */
+ p++;
+ break;
+
+ }
+ }
+ else
+ {
+ switch (*p)
+ {
+ case '\0':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = NULL_TOKEN;
+ return (p);
+
+ case ']':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DREF_CLOSE_TOKEN;
+ p++;
+ break;
+
+ case '(':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = BB_TOKEN;
+ p++;
+ break;
+
+ case ')':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EB_TOKEN;
+ p++;
+ break;
+
+ case '+':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = PLUS_TOKEN;
+ p++;
+ break;
+
+ case '-':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = MINUS_TOKEN;
+ p++;
+ break;
+
+ case '*':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = MULTIPLY_TOKEN;
+ p++;
+ break;
+
+ case '/':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DIVIDE_TOKEN;
+ p++;
+ break;
+
+ case '%':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = MOD_TOKEN;
+ p++;
+ break;
+
+ case '~':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = NEG_TOKEN;
+ p++;
+ break;
+
+ case '^':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = XOR_TOKEN;
+ p++;
+ break;
+
+ case '!':
+ p++;
+ if (*p == '=')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = NOT_EQUAL_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = NOT_TOKEN;
+ break;
+
+ case ' ': /* drop spaces on the floor */
+ p++;
+ break;
+
+ /*
+ * These cases require special handling
+ */
+
+ case 'x':
+ case 'X':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case 'a':
+ case 'A':
+ case 'b':
+ case 'B':
+ case 'c':
+ case 'C':
+ case 'd':
+ case 'D':
+ case 'e':
+ case 'E':
+ case 'f':
+ case 'F':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenValue[TokenCount] = GetNumber(p, &p, &delta, &retCode, mode);
+ ((retCode) ? (TokenType[TokenCount++] = INVALID_NUMBER_TOKEN)
+ : (TokenType[TokenCount++] = NUMBER_TOKEN));
+ break;
+
+ case '[':
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DREF_OPEN_TOKEN;
+ p++;
+ if (*p == 'D' || *p == 'd')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = DWORD_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == 'W' || *p == 'w')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = WORD_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == 'B' || *p == 'b')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = BYTE_TOKEN;
+ p++;
+ break;
+ }
+ break;
+
+ case '=':
+ p++;
+ if (*p == '=')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = EQUAL_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = ASSIGNMENT_TOKEN;
+ break;
+
+ case '<':
+ p++;
+ if (*p == '<')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LEFT_SHIFT_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == '=')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LESS_EQUAL_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LESS_TOKEN;
+ break;
+
+ case '>':
+ p++;
+ if (*p == '>')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = RIGHT_SHIFT_TOKEN;
+ p++;
+ break;
+ }
+ if (*p == '=')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = GREATER_EQUAL_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = GREATER_TOKEN;
+ break;
+
+ case '|':
+ p++;
+ if (*p == '|')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LOGICAL_OR_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = OR_TOKEN;
+ break;
+
+ case '&':
+ p++;
+ if (*p == '&')
+ {
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = LOGICAL_AND_TOKEN;
+ p++;
+ break;
+ }
+ TokenIndex[TokenCount] = (unsigned long) ((unsigned long) p - (unsigned long) op);
+ TokenType[TokenCount++] = AND_TOKEN;
+ break;
+
+ default: /* if we get a default, drop the character on the floor */
+ p++;
+ break;
+
+ }
+ }
+ }
+ return p;
+
+}
+
+void displayExpressionHelp(void)
+{
+
+ if (DBGPrint("Arithmetic Operators\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("+ add\n")) return;
+ if (DBGPrint("- subtract\n")) return;
+ if (DBGPrint("* multiply\n")) return;
+ if (DBGPrint("/ divide\n")) return;
+ if (DBGPrint("<< bit shift left\n")) return;
+ if (DBGPrint(">> bit shift right\n")) return;
+ if (DBGPrint("| OR operator\n")) return;
+ if (DBGPrint("& AND operator\n")) return;
+ if (DBGPrint("^ XOR operator\n")) return;
+ if (DBGPrint("~ NEG operator\n")) return;
+ if (DBGPrint("%% MODULO operator\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 1:\n")) return;
+ if (DBGPrint("(0)> .e (100 + 100)\n")) return;
+ if (DBGPrint("(0)> result = 0x200 (512)\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 2:\n")) return;
+ if (DBGPrint("(0)> .e (1 << 20)\n")) return;
+ if (DBGPrint("(0)> result = 0x00100000 (1,024,000)\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 3:\n")) return;
+ if (DBGPrint("(0)> .e (FEF023 & 100F)\n")) return;
+ if (DBGPrint("(0)> result = 0x1003 (4099)\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Boolean Operators (Conditional Breakpoint)\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("== is equal to\n")) return;
+ if (DBGPrint("!= is not equal to\n")) return;
+ if (DBGPrint("!<expr> is not\n")) return;
+ if (DBGPrint("> is greater than\n")) return;
+ if (DBGPrint("< is less than\n")) return;
+ if (DBGPrint(">= is greater than or equal to\n")) return;
+ if (DBGPrint("<= if less than or equal to\n")) return;
+ if (DBGPrint("|| logical OR operator\n")) return;
+ if (DBGPrint("&& logical AND operator\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("all breakpoint conditions must be enclosed in brackets () to\n")) return;
+ if (DBGPrint("evaluate correctly\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 1 (Execute Breakpoint):\n")) return;
+ if (DBGPrint("(0)> b 37000 (EAX == 20 && EBX <= 4000)\n")) return;
+ if (DBGPrint("breakpoint will activate if condition is true (returns 1)\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 2 (IO Breakpoint):\n")) return;
+ if (DBGPrint("(0)> bi 3D4 (!EBX && [d ESI+40] != 2000)\n")) return;
+ if (DBGPrint("breakpoint will activate if condition is true (returns 1)\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Register Operators\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("EAX, EBX, ECX, EDX - general registers\n")) return;
+ if (DBGPrint("ESI, EDI, EBP, ESP - pointer registers\n")) return;
+ if (DBGPrint("EIP, <symbol> - instruction pointer or symbol\n")) return;
+ if (DBGPrint("CS, DS, ES, FS, GS, SS - segment registers\n")) return;
+ if (DBGPrint("CF, PF, AF, ZF, SF, IF - flags\n")) return;
+ if (DBGPrint("DF, OF, VM, AC\n")) return;
+ if (DBGPrint("= - set equal to\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 1:\n")) return;
+ if (DBGPrint("(0)> EAX = 0032700 \n")) return;
+ if (DBGPrint("EAX changed to 0x0032700\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 2:\n")) return;
+ if (DBGPrint("(0)> u thread_switch\n")) return;
+ if (DBGPrint("unassembles function thread_switch\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 3 (Dump):\n")) return;
+ if (DBGPrint("(0)> d EBP+ECX\n")) return;
+ if (DBGPrint("(dumps [d EBP + ECX])\n")) return;
+ if (DBGPrint("[addr] 00 00 00 01 02 04 07 ...\n")) return;
+ if (DBGPrint("[addr] 00 34 56 00 7A 01 00 ...\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Bracket Operators\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("( begin expression bracket\n")) return;
+ if (DBGPrint(") end expression bracket\n")) return;
+ if (DBGPrint("[ begin pointer\n")) return;
+ if (DBGPrint("] end pointer\n")) return;
+ if (DBGPrint("d Dunsigned short reference\n")) return;
+ if (DBGPrint("w unsigned short reference\n")) return;
+ if (DBGPrint("b unsigned char reference\n")) return;
+ if (DBGPrint("<num>r parse number as decimal not hex flag"
+ " (e.g. 512r == 200)\n")) return;
+ if (DBGPrint("Note - Dunsigned short,unsigned short, and unsigned char dereference operators must\n")) return;
+ if (DBGPrint("immediately follow pointer brackets (no spaces)\n")) return;
+ if (DBGPrint("i.e. [d <addr/symbol>] or [w <addr/symbol>] or\n"))
+ return;
+ if (DBGPrint("[b <addr/symbol>], etc.\n"))
+ return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 1 (dump):\n")) return;
+ if (DBGPrint("(0)> d [d EAX+100r] \n")) return;
+ if (DBGPrint("[eax + 100 (dec)] 00 00 00 01 02 04 07 00\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 2 (dump):\n")) return;
+ if (DBGPrint("(0)> d [w 003400] \n")) return;
+ if (DBGPrint("[addr (hex)] 00 22 00 01 02 04 07 ...\n")) return;
+ if (DBGPrint("[addr (hex)] 00 31 A1 00 6A 05 00 ...\n")) return;
+ if (DBGPrint("\n")) return;
+ if (DBGPrint("Example 3 (break):\n")) return;
+ if (DBGPrint("(0)> b = 7A000 (EAX + ECX == 30) && ([d B8000+50] == 0x07)\n")) return;
+ if (DBGPrint("breakpoint will activate if condition is true (returns 1)\n")) return;
+ if (DBGPrint("\n")) return;
+
+ return;
+
+}
+
+unsigned long deref(unsigned long type, unsigned long value)
+{
+ unsigned long *pd;
+ unsigned short *pw;
+ unsigned char *pb;
+
+ switch (type)
+ {
+ case ULONG_PTR:
+ pd = (unsigned long *) value;
+#if (DEBUG_EXPRESS)
+ DBGPrint("dref (d): [%08X]-> %08X\n", pd,
+ mdb_getword((unsigned long)pd, 4));
+#endif
+ return (unsigned long) mdb_getword((unsigned long)pd, 4);
+
+ case WORD_PTR:
+ pw = (unsigned short *) value;
+#if (DEBUG_EXPRESS)
+ DBGPrint("dref (w): [%08X]-> %04X\n", pw,
+ mdb_getword((unsigned long)pw, 2));
+#endif
+ return (unsigned short) mdb_getword((unsigned long)pw, 2);
+
+ case BYTE_PTR:
+ pb = (unsigned char *) value;
+#if (DEBUG_EXPRESS)
+ DBGPrint("dref (b): [%08X]-> %02X\n", pb,
+ mdb_getword((unsigned long)pb, 1));
+#endif
+ return (unsigned char) mdb_getword((unsigned long)pb, 1);
+
+ default:
+#if (DEBUG_EXPRESS)
+ DBGPrint("dref (?): [0]-> 0\n");
+#endif
+ return 0;
+ }
+
+}
+
+unsigned long ExpressPush(unsigned long i)
+{
+ if (sp > bos)
+ {
+#if (DEBUG_EXPRESS)
+ DBGPrint("push : <err>\n");
+#endif
+ return 0;
+ }
+ *sp = i;
+#if (DEBUG_EXPRESS)
+ DBGPrint("push : %08X (%d)\n", *sp, *sp);
+#endif
+ sp++;
+ return 1;
+}
+
+unsigned long ExpressPop(void)
+{
+ sp--;
+ if (sp < tos)
+ {
+ sp++;
+#if (DEBUG_EXPRESS)
+ DBGPrint("pop : <err>\n");
+#endif
+ return 0;
+ }
+#if (DEBUG_EXPRESS)
+ DBGPrint("pop : %08X (%d)\n", *sp, *sp);
+#endif
+ return *sp;
+
+}
+
+unsigned long ContextPush(unsigned long i)
+{
+ if (c_sp > c_bos)
+ {
+#if (DEBUG_EXPRESS)
+ DBGPrint("cpush: <err>\n");
+#endif
+ return 0;
+ }
+ *c_sp = i;
+#if (DEBUG_EXPRESS)
+ DBGPrint("cpush: %08X (%d)\n", *c_sp, *c_sp);
+#endif
+ c_sp++;
+ return 1;
+}
+
+unsigned long ContextPop(void)
+{
+ c_sp--;
+ if (c_sp < c_tos)
+ {
+ c_sp++;
+#if (DEBUG_EXPRESS)
+ DBGPrint("cpop : <err>\n");
+#endif
+ return 0;
+ }
+#if (DEBUG_EXPRESS)
+ DBGPrint("cpop : %08X (%d)\n", *c_sp, *c_sp);
+#endif
+ return *c_sp;
+
+}
+
+unsigned long BooleanPush(unsigned long i)
+{
+ if (b_sp > b_bos)
+ {
+#if (DEBUG_BOOL_STACK)
+ DBGPrint("bpush: <err>\n");
+#endif
+ return 0;
+ }
+ *b_sp = i;
+#if (DEBUG_BOOL_STACK)
+ DBGPrint("bpush: %08X (%d)\n", *b_sp, *b_sp);
+#endif
+ b_sp++;
+ return 1;
+}
+
+unsigned long BooleanPop(void)
+{
+ b_sp--;
+ if (b_sp < b_tos)
+ {
+ b_sp++;
+#if (DEBUG_BOOL_STACK)
+ DBGPrint("bpop : <err>\n");
+#endif
+ return 0;
+ }
+#if (DEBUG_BOOL_STACK)
+ DBGPrint("bpop : %08X (%d)\n", *b_sp, *b_sp);
+#endif
+ return *b_sp;
+
+}
+
+unsigned long LogicalPush(unsigned long i)
+{
+ if (l_sp > l_bos)
+ {
+#if (DEBUG_LOGICAL_STACK)
+ DBGPrint("lpush: <err>\n");
+#endif
+ return 0;
+ }
+ *l_sp = i;
+#if (DEBUG_LOGICAL_STACK)
+ DBGPrint("lpush: %08X (%d)\n", *l_sp, *l_sp);
+#endif
+ l_sp++;
+ return 1;
+}
+
+unsigned long LogicalPop(void)
+{
+ l_sp--;
+ if (l_sp < l_tos)
+ {
+ l_sp++;
+#if (DEBUG_LOGICAL_STACK)
+ DBGPrint("lpop : <err>\n");
+#endif
+ return 0;
+ }
+#if (DEBUG_LOGICAL_STACK)
+ DBGPrint("lpop : %08X (%d)\n", *l_sp, *l_sp);
+#endif
+ return *l_sp;
+
+}
+
+void initNumericStacks(void)
+{
+
+ sp = numStack;
+ tos = sp;
+ bos = sp + NUM_STACK_SIZE - 1;
+
+ c_sp = contextStack;
+ c_tos = c_sp;
+ c_bos = c_sp + CONTEXT_STACK_SIZE - 1;
+
+ b_sp = booleanStack;
+ b_tos = b_sp;
+ b_bos = b_sp + BOOL_STACK_SIZE - 1;
+
+ l_sp = logicalStack;
+ l_tos = l_sp;
+ l_bos = l_sp + LOGICAL_STACK_SIZE - 1;
+
+}
+
+unsigned long ProcessOperator(unsigned long oper)
+{
+ unsigned long a, b;
+
+ b = ExpressPop();
+ a = ExpressPop();
+ switch(oper)
+ {
+ case NEG_TOKEN:
+ break;
+
+ case LEFT_SHIFT_TOKEN:
+ ExpressPush(a << (b % PROCESSOR_32)); /* mod (b) to base 32 */
+ break;
+
+ case RIGHT_SHIFT_TOKEN:
+ ExpressPush(a >> (b % PROCESSOR_32)); /* mob (b) to base 32 */
+ break;
+
+ case PLUS_TOKEN:
+ ExpressPush(a + b);
+ break;
+
+ case XOR_TOKEN:
+ ExpressPush(a ^ b);
+ break;
+
+ case AND_TOKEN:
+ ExpressPush(a & b);
+ break;
+
+ case MOD_TOKEN:
+ if (b) /* if modulo by zero, drop value on the floor */
+ ExpressPush(a % b);
+ else
+ ExpressPush(0);
+ break;
+
+ case OR_TOKEN:
+ ExpressPush(a | b);
+ break;
+
+ case MINUS_TOKEN:
+ ExpressPush(a - b);
+ break;
+
+ case MULTIPLY_TOKEN:
+ ExpressPush(a * b);
+ break;
+
+ case DIVIDE_TOKEN:
+ if (b) /* if divide by zero, drop value on the floor */
+ ExpressPush(a / b);
+ else
+ ExpressPush(0);
+ break;
+
+ }
+ return 0;
+
+}
+
+unsigned long ProcessBoolean(unsigned long oper)
+{
+
+ unsigned long a, b;
+
+ b = ExpressPop();
+ a = ExpressPop();
+ switch(oper)
+ {
+ case NOT_TOKEN:
+ ExpressPush(a == b); /* we pushed an imaginary zero on the stack */
+ break; /* this operation returns the boolean for (!x) */
+
+ case GREATER_TOKEN:
+ ExpressPush(a > b);
+ break;
+
+ case LESS_TOKEN:
+ ExpressPush(a < b);
+ break;
+
+ case GREATER_EQUAL_TOKEN:
+ ExpressPush(a >= b);
+ break;
+
+ case LESS_EQUAL_TOKEN:
+ ExpressPush(a <= b);
+ break;
+
+ case EQUAL_TOKEN:
+ ExpressPush(a == b);
+ break;
+
+ case NOT_EQUAL_TOKEN:
+ ExpressPush(a != b);
+ break;
+ }
+ return 0;
+
+}
+
+unsigned long ProcessLogical(unsigned long oper)
+{
+
+ unsigned long a, b;
+
+ b = ExpressPop();
+ a = ExpressPop();
+ switch(oper)
+ {
+ case LOGICAL_AND_TOKEN:
+ ExpressPush(a && b);
+ break;
+
+ case LOGICAL_OR_TOKEN:
+ ExpressPush(a || b);
+ break;
+ }
+ return 0;
+
+}
+
+unsigned long ParseLogical(unsigned long logicalCount)
+{
+
+ register int i, r;
+ unsigned long a;
+ unsigned long c = 0, lastClass = 0, oper = 0;
+
+ for (i = 0; i < logicalCount; i++)
+ ExpressPush(LogicalPop());
+
+ for (i = 0, r = 0; i < (logicalCount / 2); i++)
+ {
+ a = ExpressPop();
+ TokenType[r] = NUMBER_TOKEN;
+ TokenValue[r++] = a;
+ a = ExpressPop();
+ TokenType[r] = a; /* get the operator type */
+ TokenValue[r++] = 0;
+ }
+
+ initNumericStacks();
+
+#if (DEBUG_LOGICAL)
+ DBGPrint("\n");
+#endif
+ for (i = 0; i < logicalCount; i++)
+ {
+#if DEBUG_LOGICAL
+ DBGPrint("token: %02X value: %08X type: %s\n", TokenType[i],
+ TokenValue[i], parserDescription[TokenType[i]]);
+#endif
+ switch (TokenType[i])
+ {
+ case LOGICAL_AND_TOKEN:
+ case LOGICAL_OR_TOKEN:
+ if (lastClass != CLASS_BOOLEAN)
+ {
+ lastClass = CLASS_BOOLEAN;
+ oper = TokenType[i];
+ }
+ continue;
+
+ case NUMBER_TOKEN:
+ if (lastClass == CLASS_DATA)
+ {
+ c = ExpressPop();
+ return c;
+ }
+ lastClass = CLASS_DATA;
+ c = TokenValue[i];
+ ExpressPush(c);
+ if (oper)
+ oper = ProcessLogical(oper);
+ continue;
+
+ case NULL_TOKEN:
+ c = ExpressPop();
+ return c;
+
+ default:
+ continue;
+ }
+ }
+ return c;
+
+}
+
+unsigned long ParseBoolean(unsigned long booleanCount)
+{
+
+ register int i, r;
+ unsigned long a, oper = 0;
+ unsigned long c = 0, lastClass = 0, logicalCount = 0;
+
+ for (i = 0; i < booleanCount; i++)
+ ExpressPush(BooleanPop());
+
+ for (i = 0, r = 0; i < (booleanCount / 2); i++)
+ {
+ a = ExpressPop();
+ TokenType[r] = NUMBER_TOKEN;
+ TokenValue[r++] = a;
+ a = ExpressPop();
+ TokenType[r] = a; /* get the operator type */
+ TokenValue[r++] = 0;
+ }
+
+ initNumericStacks();
+
+#if (DEBUG_BOOL)
+ DBGPrint("\n");
+#endif
+ for (i = 0; i < booleanCount; i++)
+ {
+#if DEBUG_BOOL
+ DBGPrint("token: %02X value: %08X type: %s\n", TokenType[i],
+ TokenValue[i], parserDescription[TokenType[i]]);
+#endif
+ switch (TokenType[i])
+ {
+ /* partition operators */
+ case LOGICAL_AND_TOKEN:
+ case LOGICAL_OR_TOKEN:
+ c = ExpressPop();
+ LogicalPush(c);
+ logicalCount++;
+ LogicalPush(TokenType[i]);
+ logicalCount++;
+ ExpressPush(c);
+ oper = 0;
+ lastClass = 0;
+ continue;
+
+ /* boolean operators */
+ case NOT_TOKEN:
+ if (lastClass != CLASS_BOOLEAN)
+ {
+ ExpressPush(0);
+ lastClass = CLASS_BOOLEAN;
+ oper = TokenType[i];
+ }
+ continue;
+
+ case GREATER_TOKEN:
+ case LESS_TOKEN:
+ case GREATER_EQUAL_TOKEN:
+ case LESS_EQUAL_TOKEN:
+ case EQUAL_TOKEN:
+ case NOT_EQUAL_TOKEN:
+ if (lastClass != CLASS_BOOLEAN)
+ {
+ lastClass = CLASS_BOOLEAN;
+ oper = TokenType[i];
+ }
+ continue;
+
+ case NUMBER_TOKEN:
+ if (lastClass == CLASS_DATA)
+ {
+ c = ExpressPop();
+ if (logicalCount)
+ {
+ LogicalPush(c);
+ logicalCount++;
+ LogicalPush(0); /* push null token */
+ logicalCount++;
+ c = ParseLogical(logicalCount);
+ return c;
+ }
+ return c;
+ }
+ lastClass = CLASS_DATA;
+ c = TokenValue[i];
+ ExpressPush(c);
+ if (oper)
+ oper = ProcessBoolean(oper);
+ continue;
+
+ case NULL_TOKEN:
+ c = ExpressPop();
+ if (logicalCount)
+ {
+ LogicalPush(c);
+ logicalCount++;
+ LogicalPush(0); /* push null token */
+ logicalCount++;
+ c = ParseLogical(logicalCount);
+ return c;
+ }
+ return c;
+
+ default:
+ continue;
+ }
+ }
+ return c;
+
+}
+
+unsigned long Evaluate(StackFrame *stackFrame, unsigned char **p, unsigned long *type, unsigned long mode)
+{
+
+ register int i;
+ unsigned long oper = 0, dref = 0, bracket = 0;
+ unsigned long dref_type = 0, lastClass = 0, lastToken = 0;
+ unsigned long neg_flag = 0, negative_flag = 0, c;
+ unsigned long booleanCount = 0;
+
+#ifdef MDB_ATOMIC
+ spin_lock_irqsave(&expressLock, flags);
+#endif
+
+ if (type)
+ *type = INVALID_EXPRESSION;
+#if (DEBUG_BOOL)
+ DBGPrint("\n");
+#endif
+#if (DEBUG_EXPRESS)
+ DBGPrint("\np: %08X %s\n", *p, *p);
+#endif
+ parseTokens(stackFrame, *p, mode);
+ if (TokenCount)
+ {
+ initNumericStacks();
+ for (i = 0; i < TokenCount; i++)
+ {
+#if (DEBUG_EXPRESS)
+ DBGPrint("token: %s lastClass: %d\n", parserDescription[TokenType[i]], lastClass);
+#endif
+ switch (TokenType[i])
+ {
+ case INVALID_NUMBER_TOKEN:
+ goto evaluate_error_exit;
+
+ case NOT_TOKEN:
+ if (lastClass != CLASS_DATA)
+ {
+ if (oper)
+ oper = ProcessOperator(oper);
+ c = ExpressPop();
+ BooleanPush(c);
+ booleanCount++;
+ BooleanPush(TokenType[i]);
+ booleanCount++;
+ dref_type = 0;
+ lastClass = 0;
+ neg_flag = 0;
+ negative_flag = 0;
+ }
+ lastToken = NOT_TOKEN;
+ continue;
+
+ /* boolean operators */
+ case GREATER_TOKEN:
+ case LESS_TOKEN:
+ case GREATER_EQUAL_TOKEN:
+ case LESS_EQUAL_TOKEN:
+ case LOGICAL_AND_TOKEN:
+ case LOGICAL_OR_TOKEN:
+ case EQUAL_TOKEN:
+ case NOT_EQUAL_TOKEN:
+ if (oper)
+ oper = ProcessOperator(oper);
+ c = ExpressPop();
+ BooleanPush(c);
+ booleanCount++;
+ BooleanPush(TokenType[i]);
+ booleanCount++;
+ dref_type = 0;
+ lastClass = 0;
+ neg_flag = 0;
+ negative_flag = 0;
+ lastToken = 0;
+ continue;
+
+ /* partition operators */
+ case DWORD_TOKEN:
+ if (dref)
+ dref_type = ULONG_PTR;
+ lastToken = 0;
+ continue;
+
+ case WORD_TOKEN:
+ if (dref)
+ dref_type = WORD_PTR;
+ lastToken = 0;
+ continue;
+
+ case BYTE_TOKEN:
+ if (dref)
+ dref_type = BYTE_PTR;
+ lastToken = 0;
+ continue;
+
+ case DREF_OPEN_TOKEN: /* push state and nest for de-reference */
+ if (lastClass == CLASS_DATA)
+ {
+ *p = (unsigned char *)((unsigned long)*p + (unsigned long)TokenIndex[i]);
+ if (type)
+ {
+ if (booleanCount)
+ *type = BOOLEAN_EXPRESSION;
+ else
+ *type = NUMERIC_EXPRESSION;
+ }
+ c = ExpressPop();
+ if (booleanCount)
+ {
+ BooleanPush(c);
+ booleanCount++;
+ BooleanPush(0); /* last operator is the null token */
+ booleanCount++;
+ c = ParseBoolean(booleanCount);
+#if (DEBUG_BOOL)
+ DBGPrint("be_N : (%d) = (%s)\n", c, c ? "TRUE" : "FALSE");
+#endif
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return c;
+ }
+#if (DEBUG_EXPRESS)
+ DBGPrint("ee_N : %08X (%d)\n", c, c);
+#endif
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return c;
+ }
+ dref++;
+ ContextPush(dref_type);
+ ContextPush(oper);
+ ContextPush(lastClass);
+ ContextPush(neg_flag);
+ ContextPush(negative_flag);
+ dref_type = 0;
+ oper = 0;
+ lastClass = 0;
+ neg_flag = 0;
+ negative_flag = 0;
+ lastToken = 0;
+ continue;
+
+ case DREF_CLOSE_TOKEN: /* pop state,restore,and complete oper */
+ if (!dref)
+ continue;
+ c = deref(dref_type, ExpressPop());
+ ExpressPush(c);
+ negative_flag = ContextPop();
+ neg_flag = ContextPop();
+ ContextPop();
+ oper = ContextPop();
+ dref_type = ContextPop();
+ if (dref)
+ dref--;
+ lastClass = CLASS_DATA;
+
+ c = ExpressPop();
+ if (negative_flag)
+ c = 0 - c;
+ if (neg_flag)
+ c = ~c;
+ neg_flag = 0;
+ negative_flag = 0;
+ ExpressPush(c);
+
+ if (oper)
+ oper = ProcessOperator(oper);
+ lastToken = 0;
+ continue;
+
+ case BB_TOKEN:
+ if (lastClass == CLASS_DATA)
+ {
+ *p = (unsigned char *)((unsigned long)*p + (unsigned long)TokenIndex[i]);
+ if (type)
+ {
+ if (booleanCount)
+ *type = BOOLEAN_EXPRESSION;
+ else
+ *type = NUMERIC_EXPRESSION;
+ }
+ c = ExpressPop();
+ if (booleanCount)
+ {
+ BooleanPush(c);
+ booleanCount++;
+ BooleanPush(0); /* last operator is the null token */
+ booleanCount++;
+ c = ParseBoolean(booleanCount);
+#if (DEBUG_BOOL)
+ DBGPrint("be_N : (%d) = (%s)\n", c, c ? "TRUE" : "FALSE");
+#endif
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return c;
+ }
+#if (DEBUG_EXPRESS)
+ DBGPrint("ee_N : %08X (%d)\n", c, c);
+#endif
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return c;
+ }
+ bracket++;
+ ContextPush(oper);
+ ContextPush(lastClass);
+ ContextPush(neg_flag);
+ ContextPush(negative_flag);
+ oper = 0;
+ lastClass = 0;
+ neg_flag = 0;
+ negative_flag = 0;
+ lastToken = 0;
+ continue;
+
+ case EB_TOKEN:
+ if (!bracket)
+ continue;
+ negative_flag = ContextPop();
+ neg_flag = ContextPop();
+ ContextPop();
+ oper = ContextPop();
+ if (bracket)
+ bracket--;
+ lastClass = CLASS_DATA;
+ c = ExpressPop();
+ if (negative_flag)
+ c = 0 - c;
+ if (neg_flag)
+ c = ~c;
+ neg_flag = 0;
+ negative_flag = 0;
+ ExpressPush(c);
+ if (oper)
+ oper = ProcessOperator(oper);
+ lastToken = 0;
+ continue;
+
+ /* arithmetic operators */
+ case NEG_TOKEN:
+ neg_flag = 1;
+ lastToken = 0;
+ continue;
+
+ case MINUS_TOKEN:
+ if (lastClass == CLASS_ARITHMETIC)
+ {
+ lastToken = MINUS_TOKEN;
+ negative_flag = 1;
+ continue;
+ }
+ if (lastClass != CLASS_ARITHMETIC)
+ {
+ lastClass = CLASS_ARITHMETIC;
+ oper = TokenType[i];
+ }
+ lastToken = 0;
+ continue;
+
+ case PLUS_TOKEN:
+ case LEFT_SHIFT_TOKEN:
+ case RIGHT_SHIFT_TOKEN:
+ case XOR_TOKEN:
+ case AND_TOKEN:
+ case MOD_TOKEN:
+ case OR_TOKEN:
+ case MULTIPLY_TOKEN:
+ case DIVIDE_TOKEN:
+ if (lastClass != CLASS_ARITHMETIC)
+ {
+ lastClass = CLASS_ARITHMETIC;
+ oper = TokenType[i];
+ }
+ lastToken = 0;
+ continue;
+
+ /* data operators */
+ case CF_TOKEN:
+ case PF_TOKEN:
+ case AF_TOKEN:
+ case ZF_TOKEN:
+ case SF_TOKEN:
+ case IF_TOKEN:
+ case DF_TOKEN:
+ case OF_TOKEN:
+ case VM_TOKEN:
+ case AC_TOKEN:
+ case EIP_TOKEN:
+ case FLAGS_TOKEN:
+ case EAX_TOKEN:
+ case EBX_TOKEN:
+ case ECX_TOKEN:
+ case EDX_TOKEN:
+ case ESI_TOKEN:
+ case EDI_TOKEN:
+ case EBP_TOKEN:
+ case ESP_TOKEN:
+ case CS_TOKEN:
+ case DS_TOKEN:
+ case ES_TOKEN:
+ case FS_TOKEN:
+ case GS_TOKEN:
+ case SS_TOKEN:
+ case NUMBER_TOKEN:
+ if (lastClass == CLASS_DATA)
+ {
+ *p = (unsigned char *)((unsigned long)*p + (unsigned long)TokenIndex[i]);
+ if (type)
+ {
+ if (booleanCount)
+ *type = BOOLEAN_EXPRESSION;
+ else
+ *type = NUMERIC_EXPRESSION;
+ }
+ c = ExpressPop();
+ if (booleanCount)
+ {
+ BooleanPush(c);
+ booleanCount++;
+ BooleanPush(0); /* last operator is the null token */
+ booleanCount++;
+ c = ParseBoolean(booleanCount);
+#if (DEBUG_BOOL)
+ DBGPrint("be_N : (%d) = (%s)\n", c, c ? "TRUE" : "FALSE");
+#endif
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return c;
+ }
+#if (DEBUG_EXPRESS)
+ DBGPrint("ee_N : %08X (%d)\n", c, c);
+#endif
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return c;
+ }
+ lastClass = CLASS_DATA;
+ c = TokenValue[i];
+ if (negative_flag)
+ c = 0 - c;
+ if (neg_flag)
+ c = ~TokenValue[i];
+ neg_flag = 0;
+ negative_flag = 0;
+ ExpressPush(c);
+ if (oper)
+ oper = ProcessOperator(oper);
+ lastToken = 0;
+ continue;
+
+ case NULL_TOKEN:
+ *p = (unsigned char *)((unsigned long)*p + (unsigned long)TokenIndex[i]);
+ if (TokenCount > 1 && type)
+ {
+ if (booleanCount)
+ *type = BOOLEAN_EXPRESSION;
+ else
+ *type = NUMERIC_EXPRESSION;
+ }
+ c = ExpressPop();
+ if (booleanCount)
+ {
+ BooleanPush(c);
+ booleanCount++;
+ BooleanPush(0); /* last operator is the null token */
+ booleanCount++;
+ c = ParseBoolean(booleanCount);
+#if (DEBUG_BOOL)
+ DBGPrint("be_N : (%d) = (%s)\n", c, c ? "TRUE" : "FALSE");
+#endif
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return c;
+ }
+#if (DEBUG_EXPRESS)
+ DBGPrint("ee_N : %08X (%d)\n", c, c);
+#endif
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return c;
+
+ /* assignment operators */
+ case ASSIGNMENT_TOKEN:
+ lastToken = 0;
+ continue;
+
+ default:
+ lastToken = 0;
+ continue;
+ }
+ }
+ }
+
+evaluate_error_exit:
+ if (type)
+ *type = INVALID_EXPRESSION;
+
+ if (lastToken) {};
+
+#ifdef MDB_ATOMIC
+ spin_unlock_irqrestore(&expressLock, flags);
+#endif
+ return 0;
+
+}
+
+unsigned long EvaluateNumericExpression(StackFrame *stackFrame, unsigned char **p, unsigned long *type)
+{
+ register unsigned long c;
+ c = Evaluate(stackFrame, p, type, 1);
+ return c;
+}
+
+unsigned long EvaluateExpression(StackFrame *stackFrame, unsigned char **p, unsigned long *type)
+{
+ register unsigned long c;
+ c = Evaluate(stackFrame, p, type, 0);
+ return c;
+}
+
+void EvaluateCommandExpression(StackFrame *stackFrame, unsigned char *p)
+{
+ unsigned char *expr;
+ unsigned long type;
+ unsigned long c;
+
+#if DEBUG_EXPRESS
+ DBGPrint("expr: [%s]\n", p);
+#endif
+ expr = p;
+ c = EvaluateExpression(stackFrame, &p, &type);
+ if (type)
+ {
+ DBGPrint("expr: %s = 0x%08X (%dr) (%s) bool(%i) = %s\n",
+ expr, (unsigned)c, (int)c, exprDescription[type & 3],
+ (c) ? 1 : 0, (c) ? "TRUE" : "FALSE");
+ }
+ else
+ {
+ DBGPrint("expression parameters invalid\n");
+ DBGPrint("expr: %s = 0x%08X (%dr) (results invalid) (%s)"
+ " bool(%i) = %s\n",
+ expr, (unsigned)c, (int)c, exprDescription[type & 3],
+ (c) ? 1 : 0, (c) ? "TRUE" : "FALSE");
+ }
+ return;
+
+}
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists