feat: add initial process, thread and scheduler

.gitignore

@@ -30,6 +30,7 @@ build/
 /.idea/
 !/.idea/runConfigurations
 /.vscode/
+!/.idea/settings.json
 *~
 *.swp
 [._]*.s[a-w][a-z]
@@ -60,4 +61,5 @@ compile_commands.json
 # Misc
 NOTES
 /server.PID
-
+compile_commands.json
+user/swi/swi

.vscode/launch.json

@@ -12,6 +12,6 @@
             "cwd": "${workspaceRoot}",
             // "preLaunchTask": "run_debug",
             "valuesFormatting": "prettyPrinters"
-        },
+        }
     ]
-}
+}

kernel/src/common/include/interrupt.h

@@ -36,30 +36,6 @@
 
 #define BRANCH_INSTRUCTION 0xe59ff018  // ldr pc, pc+offset (where offset is 0x20 bytes)
 
-// System Call Types
-// TODO: maybe make enum?
-#define SYSCALL_CREATE        0
-#define SYSCALL_SWITCH        1
-#define SYSCALL_DELETE        2
-#define SYSCALL_OPEN          3
-#define SYSCALL_READ          4
-#define SYSCALL_WRITE         5
-#define SYSCALL_CLOSE         6
-#define SYSCALL_SET_PERM      7
-#define SYSCALL_MEM_MAP       8
-#define SYSCALL_SEEK          9
-#define SYSCALL_MKDIR         10
-#define SYSCALL_COPY          11
-#define SYSCALL_LS            12
-#define SYSCALL_MALLOC        13
-#define SYSCALL_ALIGNED_ALLOC 14
-#define SYSCALL_FREE          15
-#define SYSCALL_PRINTF        16
-#define SYSCALL_DUMMY         99
-#define SYSCALL_EXIT          100
-#define SYSCALL_WRITEV        101
-#define SYSCALL_PAUSE         102
-
 void init_vector_table(void);
 
 // vector table handlers, should be loaded at 0x00 in this order!
@@ -68,7 +44,7 @@ extern void _Reset();
 void reset_handler(void);
 
 void __attribute__((interrupt("UNDEF"))) undef_instruction_handler();  // 0x04
-long __attribute__((interrupt("SWI"))) software_interrupt_handler();   // 0x08
+void swi_handler(void * registers);                                    // Initially handled in asm
 void __attribute__((interrupt("ABORT"))) prefetch_abort_handler();     // 0x0c
 void __attribute__((interrupt("ABORT"))) data_abort_handler();         // 0x10
 void reserved_handler();                                               // 0x14

kernel/src/common/include/interrupt_asm.h

@@ -0,0 +1,8 @@
+#ifndef COURSE_OS_INTERRUPT_ASM_H
+#define COURSE_OS_INTERRUPT_ASM_H
+
+#include "interrupt.h"
+
+long __attribute__((interrupt("SWI"))) software_interrupt_handler();  // 0x08
+
+#endif  // COURSE_OS_INTERRUPT_ASM_H

kernel/src/common/include/kernel_programs.h

@@ -0,0 +1,2 @@
+void kernel_one();
+void kernel_two();