Added semi-working kernel-data.

source/desktop-manager/dm_main.cpp

@@ -11,11 +11,14 @@
 
 #include <basics.h> // Avoid headers from kernel, this header contains just some basic macros.
 
-// int64* fb_addr = null;
-// int64* font_addr = null;
-// int64 width = 0;
-// int64 height = 0;
-// int64 pitch = 0;
+typedef struct
+{
+    int64* fb_addr;
+    int64 width;
+    int64 height;
+    int64 pitch;
+    void (*print)(cstring msg);
+} kernel_data ;
 
 /*
 * Example syscall usage
@@ -30,15 +33,16 @@ Replace [SYSCALL ID] to appropriate syscall numbers.
 void send_alive_msg(){
     asm volatile("movq %0, %%rax" :: "r"((int64)0x3));
     asm volatile("int $0x80");
-    asm volatile("movq %0, %%rax" :: "r"((int64)0x0)); // ! Always revert the RAX register after an syscall
 }
 
 /**
  * @attention Don't rename this function, if you wanted to rename it, u must change the linker also.
  * 
  */
-int dw_main(){
+int dw_main(kernel_data* data){
     send_alive_msg();
 
+    data->print("hello from desktop-manager!");
+
     return 0; // status code
 }

source/includes/executables/fwde.h

@@ -10,6 +10,7 @@
  */
 #include <basics.h>
 #include <stdbool.h>
+#include <graphics.h>
 
 typedef struct {
     char signature[4]; // FWDE
@@ -18,4 +19,14 @@ typedef struct {
     int8 endian; // 0 = error; 1 = little; 2 = big
 } fwde_header;
 
-void execute_fwde(int64* addr);
+typedef struct
+{
+    int64* fb_addr;
+    int64 width;
+    int64 height;
+    int64 pitch;
+    void (*print)(cstring msg);
+} kernel_data ;
+
+
+void execute_fwde(int64* addr, kernel_data* data);

source/kernel/C/executables/fwde.c

@@ -22,7 +22,7 @@ bool verify_signature(char* signature){
         return false;
 }
 
-void execute_fwde(int64* addr){
+void execute_fwde(int64* addr, kernel_data* data){
     info("Verifying the FrostWing deployed executable!", __FILE__);
 
     int8* local = (int8*)addr;
@@ -47,18 +47,13 @@ void execute_fwde(int64* addr){
             info("Valid executable! and ready for execution!", __FILE__);
         }
         info("Starting executing the FrostWing deployed executable...", __FILE__);
-        unsigned long long instruction_count_start, instruction_count_end;
-        int (*execute_binary)() = (int (*)())local;
+
+        typedef void(*EntryFunction)(kernel_data*);
+        EntryFunction execute_binary = (EntryFunction)local;
+
         info("Function is ready!", __FILE__);
-        asm volatile ("rdtsc" : "=A" (instruction_count_start));
-        int status_code = execute_binary();
-        asm volatile ("rdtsc" : "=A" (instruction_count_end));
-        printf("Instructions executed: %u", instruction_count_end - instruction_count_start);
-        if(status_code != 0){
-            error("Executable returned an non zero status code! (something went wrong on the executable side)", __FILE__);
-            printf("Status code : 0x%x (%d)", status_code, status_code);
-            return;
-        }
+
+        execute_binary(data);
     }else{
         error("Unsupported architecture!", __FILE__);
         return;

source/kernel/C/kernel.c

@@ -382,7 +382,15 @@ void main(void) {
 
     font_address = module_request.response->modules[1]->address;
 
-    execute_fwde(module_request.response->modules[2]->address);
+    kernel_data* data = (kernel_data*) malloc(sizeof(kernel_data));
+    data->fb_addr = framebuffer->address;
+    data->width = framebuffer->width;
+    data->height = framebuffer->height;
+    data->pitch = framebuffer->pitch;
+    data->print = print;
+    execute_fwde(module_request.response->modules[2]->address, data);
+
+    free(data);
 
     print("press F10 for (ACPI) Shutdown.\n");
     print("press F9 for (ACPI/Hard) Reboot/Reset.\n");