MASM

问题 I am trying to run procedure from asm file in cpp file but i get such errors: Error 1 error LNK2019: unresolved external symbol _calka referenced in function _main D:\Addem\main.obj Project Error 2 error LNK1120: 1 unresolved externals D:\Addem\Debug\Project.exe 1 1 Project Here is my main.cpp: #include <iostream> using namespace std; extern "C" void calka(); int main() { calka(); system("Pause"); return 0; } And my calka.asm ; The calka Subroutine (calka.asm) public _calka INCLUDELIB

问题 So I'm new to assembly, and my professor is far from helpful when it comes to actually explaining what's happening. In class, we set up loops like this: mov si, 0 mov cx, 5 (repeating the loop 5 times) L1: ... loop L1 And we print strings like this: mov ah, 40h ;write to mov bx, handle ;file mov cx, lmess2 ;number of bytes to write mov dx, offset mess2 ; int 21h So now the issue is that I need to print a string inside the loop. The issue I see with this is that the CX register is used in both

问题 I'm trying to link main.c program with procedure.asm. I have the following C program and Assembly program. main.c #include <Windows.h> #include <iostream> using namespace std; extern "C" { void ClearUsingIndex(int[], int); } static int Array[10] ={1, 2, 3, 4, 5, 6, 7, 8, 9, -1}; int main() { int size = 10; ClearUsingIndex( Array, size); system("pause"); return 0; } procedure.asm ; Listing generated by Microsoft (R) Optimizing Compiler Version 17.00.50727.1 TITLE c:\Users\GS\documents\visual

问题 I have an ASM file written for X64. It provides a leaf function. The file was assembled with MASM64/ML64. The C-pseduo code with a signature is: int GenerateBlock(byte* ptr, size_t size, unsigned int safety) { if (ptr == NUL) return 0; /*FAIL*/ ... } Here's the same portion of ASM code: ;; RCX (in): byte* buffer ;; RDX (in): size_t bsize ;; R8d (in): unsigned int safety ;; RAX (out): bool, success (1), failure (0) ASM_GenerateBlock PROC buffer:QWORD,bsize:QWORD,safety:DWORD LOCAL val:QWORD ;;

问题 I'm writing a program to convert image and compare the speed of processing data in C and assembly. I have 3 projects: main project in C DLL in C to convert image DLL in ASM to convert image In C DLL header, I simply wrote: #ifdef PROJEKTC_EXPORTS #define PROJEKTC_API __declspec(dllexport) #else #define PROJEKTC_API __declspec(dllimport) #endif ... extern PROJEKTC_API unsigned int ThreadID; PROJEKTC_API void __cdecl funkcjaC(void* Args); and after including this header, I can access variable

问题 I have a solid knowledge of C#, I can use C quite well, and I am learning C++. I really would like to learn x86 assembly language for Windows, perhaps MASM, but I don't know where to start. The first thing is the IDE. If at all possible I would like a syntax-highlighting, compiling, linking IDE, as I hate using command-line tools. I do have a nice enough editor, so just a compiler and linker GUI would also be fine. Does anybody have any recommendations? I also am going to need some good

问题 for an reverse engineering project i want to split an IDA Pro produced asm file into multiple segment files which must result in binary identical executeables binary equal means to me 100% equal: segment-starts, ordering, sizes, opcodes etc. - because its from a reversed exe and only some of the symbols are detected by IDA, mostly just variable or function offsets, etc. so i can't rely on the assembler own ordering of segments,symbols etc. - it needs to be 100% exact or else i introduce

问题 I have MASM assembler to "compile" 16 bit programs. When I tried to "compile" my sample, the MASM throw me some errors: error A2004: symbol type conflict warning A4023: with /coff switch, leading underscore required for start address : START my code is: STA SEGMENT STACK DB 100H DUP(0) STA ENDS CODE SEGMENT ASSUME CS:CODE, DS:CODE,SS:STA START:MOV AX,CODE MOV DS, AX MOV DX, OFFSET BOKER MOV AH, 8 INT 21H MOV AX, 4C00H INT 21H BOKER DB 'Hello world!$' CODE ENDS END START Please help! Thanks.

问题 I need to create a procedure that generates a random string of length L, containing all capital letters. When calling the procedure, I need to pass the value of L in EAX, and pass a pointer to an array of byte that will hold the random string. Then I need to write a test program that calls your procedure 20 times and displays the strings in the console window. The code below wont work it comes back with these errors: Line (33): error A2008: syntax error : main ENDP Line (35): error A2144:

问题 I need help with my MASM dll. I'm counting elements in array then I want to allocate memory for another array, in C I'm using vector. I tried to use: invoe GetProcessHeap invoke HeapAlloc, eax, HEAP_NO_SERIALIZE + HEAP_ZERO_MEMORY, <size> or invoke GlobalAlloc, GMEM_ZEROINIT, <size> mov tab, eax but I'm getting errors undefined symbol : GetProcessHeap undefined symbol : HeapAlloc I'm using this library in C# application. Can you show me example how can I dynamically allocate memory? 回答1: You