syscalls: implement basic execve syscall, no argc, argv, envp support yet

2025-09-14 17:17:42 +03:00
parent 4c26652ee2
commit 91e0379fc9
9 changed files with 192 additions and 38 deletions
@@ -3,4 +3,10 @@
 #include "../include/vfs.h"
 #include "../include/lib9660.h"

+#define DivRoundUp(number, divisor) ((number + divisor - 1) / divisor)
+
+#define USER_STACK_TOP            0xBFFFFFF0 // Top of user space memory
+#define USER_STACK_SIZE         0x4000         // 16KB stack (4 pages)
+#define USER_STACK_BOTTOM     (USER_STACK_TOP - USER_STACK_SIZE)
+
 void exec_from_file(const char* filename, const char* dirname);