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asm/Calling C from Asm with Int Parameter/myLibrary.c

@@ -0,0 +1,20 @@
+#include "myLibrary.h"
+#include <stdio.h>
+int foo(int a) {
+	printf ("\n");
+	if (a < 100) {
+		printf("Number is: %i\n",a);
+		for (int i = 0; i < a; i++) {
+			printf("d");
+		}
+		printf("\n");
+	}
+	else {
+		printf("Number very large: %i\n",a);
+	}
+	return 0;
+}
+int doo(char * a) {
+	printf("Hey | %s |\n",a);
+	return 0;
+}

asm/Calling C from Asm with Int Parameter/myLibrary.h

@@ -0,0 +1,5 @@
+#ifndef WHATEVER_H_INCLUDED
+#define WHATEVER_H_INCLUDED
+	int foo(int a);
+	int doo(char * a);
+#endif

asm/Calling C from Asm with Int Parameter/myLibraryExample.asm

@@ -0,0 +1,18 @@
+; See Readme for instructions
+
+  global _main
+  extern _foo
+
+  section .text
+_main:
+  sub     rsp, 8
+
+  mov     rdi, 0x55        ; Use this instead of 'mov rdi, message'
+  call    _foo
+  add     rsp, 8
+  ret
+
+  section .data
+message:
+default rel                     ; Add 'default rel' under label
+  db   0x2

asm/Calling C from Asm with Int Parameter/myLibraryExample.c

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+// --------------------------------------------------
+// gcc -c myLibrary.c -o myLibrary.o
+// gcc -c myLibraryExample.c -o example.o
+// gcc example.o myLibrary.o -o example
+// ./example
+// --------------------------------------------------
+
+#include "myLibrary.h"
+
+int main() {
+	foo(11);
+	return 0;
+}

asm/Calling C from Asm with Int Parameter/myLibraryExample2.asm

@@ -0,0 +1,22 @@
+; ------------------------------------------------------------------------------
+;	gcc -c myLibrary.c -o myLibrary.o
+
+;       /usr/local/bin/nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm
+; ------------------------------------------------------------------------------
+
+  global _main
+  extern _foo
+
+  section .text
+_main:
+  sub     rsp, 8
+
+  lea     rdi, [message]        ; Use this instead of 'mov rdi, message'
+  call    _foo
+  add     rsp, 8
+  ret
+
+  section .data
+message:
+default rel                     ; Add 'default rel' under label
+  db   "Hola, mundo",0

asm/Calling C from Asm with Int Parameter/readme.txt

@@ -0,0 +1,27 @@
+
+To Compile the library:
+ gcc -c myLibrary.c -o myLibrary.o
+
+For just the C Example:
+Compile
+ gcc -c myLibraryExample.c -o example.o
+Link
+ gcc example.o myLibrary.o -o example
+Run
+ ./example
+
+For just the Asm Example:
+Compile
+ /usr/local/bin/nasm -f macho64 myLibraryExample.asm
+Link
+ gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o 
+Run:
+ ./exampleAsm
+All:
+ nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm
+
+Compile the library and CLR the asm:
+ gcc -c myLibrary.c -o myLibrary.o &&  nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm
+
+
+

asm/Calling C from Asm with String Parameter/myLibrary.c

@@ -0,0 +1,10 @@
+#include "myLibrary.h"
+#include <stdio.h>
+int foo(int a) {
+	printf("Hey %d\n",a);
+	return 0;
+}
+int doo(char * a) {
+	printf("Hey | %s |\n",a);
+	return 0;
+}

asm/Calling C from Asm with String Parameter/myLibrary.h

@@ -0,0 +1,5 @@
+#ifndef WHATEVER_H_INCLUDED
+#define WHATEVER_H_INCLUDED
+	int foo(int a);
+	int doo(char * a);
+#endif

asm/Calling C from Asm with String Parameter/myLibraryExample.asm

@@ -0,0 +1,18 @@
+; See Readme for instructions
+
+  global _main
+  extern _doo
+
+  section .text
+_main:
+  sub     rsp, 8
+
+  lea     rdi, [message]        ; Use this instead of 'mov rdi, message'
+  call    _doo
+  add     rsp, 8
+  ret
+
+  section .data
+message:
+default rel                     ; Add 'default rel' under label
+  db   "Hey there, World!",0

asm/Calling C from Asm with String Parameter/myLibraryExample.c

@@ -0,0 +1,13 @@
+// --------------------------------------------------
+// gcc -c myLibrary.c -o myLibrary.o
+// gcc -c myLibraryExample.c -o example.o
+// gcc example.o myLibrary.o -o example
+// ./example
+// --------------------------------------------------
+
+#include "myLibrary.h"
+
+int main() {
+	foo(11);
+	return 0;
+}

asm/Calling C from Asm with String Parameter/myLibraryExample2.asm

@@ -0,0 +1,22 @@
+; ------------------------------------------------------------------------------
+;	gcc -c myLibrary.c -o myLibrary.o
+
+;       /usr/local/bin/nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm
+; ------------------------------------------------------------------------------
+
+  global _main
+  extern _foo
+
+  section .text
+_main:
+  sub     rsp, 8
+
+  lea     rdi, [message]        ; Use this instead of 'mov rdi, message'
+  call    _foo
+  add     rsp, 8
+  ret
+
+  section .data
+message:
+default rel                     ; Add 'default rel' under label
+  db   "Hola, mundo",0

asm/Calling C from Asm with String Parameter/readme.txt

@@ -0,0 +1,27 @@
+
+To Compile the library:
+ gcc -c myLibrary.c -o myLibrary.o
+
+For just the C Example:
+Compile
+ gcc -c myLibraryExample.c -o example.o
+Link
+ gcc example.o myLibrary.o -o example
+Run
+ ./example
+
+For just the Asm Example:
+Compile
+ /usr/local/bin/nasm -f macho64 myLibraryExample.asm
+Link
+ gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o 
+Run:
+ ./exampleAsm
+All:
+ nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm
+
+Compile the library and CLR the asm:
+ gcc -c myLibrary.c -o myLibrary.o &&  nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm
+
+
+

asm/Calling My C Library From Assembly/myLibrary.c

@@ -0,0 +1,6 @@
+#include "myLibrary.h"
+#include <stdio.h>
+int foo(int a) {
+	printf("Hey %d\n",a);
+	return 0;
+}

asm/Calling My C Library From Assembly/myLibrary.h

@@ -0,0 +1,4 @@
+#ifndef WHATEVER_H_INCLUDED
+#define WHATEVER_H_INCLUDED
+	int foo(int a);
+#endif

asm/Calling My C Library From Assembly/myLibraryExample.asm

@@ -0,0 +1,22 @@
+; ------------------------------------------------------------------------------
+;	gcc -c myLibrary.c -o myLibrary.o
+
+;       /usr/local/bin/nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm
+; ------------------------------------------------------------------------------
+
+  global _main
+  extern _foo
+
+  section .text
+_main:
+  sub     rsp, 8
+
+  lea     rdi, [message]        ; Use this instead of 'mov rdi, message'
+  call    _foo
+  add     rsp, 8
+  ret
+
+  section .data
+message:
+default rel                     ; Add 'default rel' under label
+  db   "Hola, mundo",0

asm/Calling My C Library From Assembly/myLibraryExample.c

@@ -0,0 +1,13 @@
+// --------------------------------------------------
+// gcc -c myLibrary.c -o myLibrary.o
+// gcc -c myLibraryExample.c -o example.o
+// gcc example.o myLibrary.o -o example
+// ./example
+// --------------------------------------------------
+
+#include "myLibrary.h"
+
+int main() {
+	foo(11);
+	return 0;
+}

asm/Calling My C Library From Assembly/myLibraryExample2.asm

@@ -0,0 +1,22 @@
+; ------------------------------------------------------------------------------
+;	gcc -c myLibrary.c -o myLibrary.o
+
+;       /usr/local/bin/nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm
+; ------------------------------------------------------------------------------
+
+  global _main
+  extern _foo
+
+  section .text
+_main:
+  sub     rsp, 8
+
+  lea     rdi, [message]        ; Use this instead of 'mov rdi, message'
+  call    _foo
+  add     rsp, 8
+  ret
+
+  section .data
+message:
+default rel                     ; Add 'default rel' under label
+  db   "Hola, mundo",0

asm/Calling My C Library From Assembly/readme.txt

@@ -0,0 +1,15 @@
+
+To Compile the library:
+ gcc -c myLibrary.c -o myLibrary.o
+
+To Compile the C Example
+ gcc -c myLibraryExample.c -o example.o
+
+To Link the C Example
+ gcc example.o myLibrary.o -o example
+
+To Run the C Example
+ ./example
+
+ To Compile the Asm Example
+/usr/local/bin/nasm -f macho64 myLibraryExample.asm && gcc -arch x86_64 -o exampleAsm myLibraryExample.o myLibrary.o && ./exampleAsm

asm/Hello World In Assembly/hola.asm

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+; ------------------------------------------------------------------------------
+; Writes "Hola, mundo" to the console using a C library. Runs on Linux or any
+; other system that does not use underscores for symbols in its C library. To
+; assemble and run:
+;
+;       /usr/local/bin/nasm -f macho64 hola.asm && gcc -arch x86_64 -o hola hola.o && ./hola
+; ------------------------------------------------------------------------------
+
+  global _main
+  extern _puts
+
+  section .text
+_main:
+  sub     rsp, 8
+
+  lea     rdi, [message]        ; Use this instead of 'mov rdi, message'
+  call    _puts
+  add     rsp, 8
+  ret
+
+  section .data
+message:
+default rel                     ; Add 'default rel' under label
+  db   "Hola, mundo",0

asm/Hello World In Assembly/hw.asm

@@ -0,0 +1,14 @@
+global start
+section .text
+start:
+	mov rax, 0x2000004 ; write
+	mov rdi, 1 ; stdout
+	mov rsi, msg
+	mov rdx, msg.len
+	syscall
+	mov rax, 0x2000001 ; exit
+	mov rdi, 0
+	syscall
+section .data
+msg:		db		"Hello, world!", 10
+.len: 	equ		$ - msg

asm/Hello World In Assembly/hw2.asm

@@ -0,0 +1,21 @@
+; --------------------------------------------------------
+; nasm -f macho64 hw2.asm && gcc -arch x86_64 -o hw2 hw2.o && ./hw2
+; --------------------------------------------------------
+
+
+	global _main
+	extern _puts
+
+	section .text
+_main:
+	sub		rsp, 8
+	
+	lea		rdi, [message] ; use lea instead of mov rdi
+	call		_puts
+	add		rsp, 8
+	ret
+	
+	section	.data
+message:
+default rel		; put under label when referencing labeled memory
+	db		"Hola, mundo",0