#EDITS: broken dgemm implementation for x86 SSE2

experiment/test.S

@@ -1,19 +1,23 @@
 .globl asm_function
 asm_function:
-    // Assembly code to add two integers
-    // Parameters are passed in registers: a in %edi, b in %esi
-    // Result is stored in %eax
-    // Load a into %eax
-    mov %edi, %eax
+
+    // a + b + c - d - e + f + g - h
+    // Parameters are passed in registers: a in %rdi, b in %rsi
+    // Result is stored in %rax
+    // Load a into %rax
+    mov %rdi, %rax
 
-    // Add b to %eax
-    add %esi, %eax
+    // Add b to %rax
+    add %rsi, %rax
 
-    // Add c to %eax
-    add %edx, %eax
+    // Add c to %rax
+    add %rdx, %rax
 
-    // Subtract d from %eax
-    sub %ecx, %eax
+    // Subtract d from %rax
+    sub %rcx, %rax
+
+    // subtract e from %rax
+    sub %r8, %rax
 
     ret // Return
 

experiment/test.c

@@ -1,12 +1,19 @@
 #include <stdio.h>
 
 // Declare the assembly function as an external function
-extern int asm_function(int a, int b, int c, int d);
+extern int asm_function(int a, int b, int c, int d, int e, int f, int g, int h, int i, int j, int k, double l);
 
 int add (int a, int b, int c) {
-    int d = 2;
 
-    return asm_function(a, b, c, d);
+    // performs:
+    //
+    // a + b + c - d - e + f + g - h + i - j + k
+
+    int d = 2, e = 11, f = 33, g = 22, h = 4, i = 39, j = 18, k = 9;
+
+    double l = 1.23;
+
+    return asm_function(a, b, c, d, e, f, g, h, i, j, k, l);
 }
 
 int main() {