Spawn Processes using memory primitives rather than and elf loader.

This allows us to remove the temporary syscall for that style of process
spawn.

zion/include/zcall.h

@@ -12,53 +12,45 @@
 #define Z_PROCESS_SPAWN 0x02
 #define Z_PROCESS_START 0x03
 
-#define Z_PROCESS_SPAWN_ELF 0x1'00000002
-
 #define ZC_PROC_SPAWN_PROC 0x100
 #define ZC_PROC_SPAWN_THREAD 0x101
 
 #define Z_INIT_PROC_SELF 0x1
+#define Z_INIT_AS_SELF 0x2
 
 // Thread Calls.
 #define Z_THREAD_CREATE 0x10
 #define Z_THREAD_START 0x11
 #define Z_THREAD_EXIT 0x12
 
+// Memory Calls
+#define Z_ADDRESS_SPACE_MAP 0x21
+#define Z_ADDRESS_SPACE_UNMAP 0x22
+
+#define Z_MEMORY_OBJECT_CREATE 0x30
+
 // Debugging Calls.
 #define Z_DEBUG_PRINT 0x10000000
 
-uint64_t ZDebug(const char* message);
+void ZProcessExit(uint64_t code);
 
-// TODO: Move structs into an internal header.
-struct ZProcessSpawnElfReq {
-  uint64_t cap_id;
-  uint64_t elf_base;
-  uint64_t elf_size;
-};
+[[nodiscard]] uint64_t ZProcessSpawn(uint64_t proc_cap, uint64_t* new_proc_cap,
+                                     uint64_t* new_as_cap);
 
-// Creates a child process of the current one and
-// starts its root thread from the provided ELF file.
-uint64_t ZProcessSpawnElf(uint64_t cap_id, uint64_t elf_base,
-                          uint64_t elf_size);
+// UNUSED for now, I think we can get away with just starting a thread.
+[[nodiscard]] uint64_t ZProcessStart(uint64_t proc_cap, uint64_t thread_cap,
+                                     uint64_t entry, uint64_t arg1,
+                                     uint64_t arg2);
 
-struct ZThreadCreateReq {
-  uint64_t proc_cap;
-};
+[[nodiscard]] uint64_t ZThreadCreate(uint64_t proc_cap, uint64_t* thread_cap);
 
-struct ZThreadCreateResp {
-  uint64_t thread_cap;
-};
-
-uint64_t ZThreadCreate(uint64_t proc_cap, uint64_t* thread_cap);
-
-struct ZThreadStartReq {
-  uint64_t thread_cap;
-  uint64_t entry;
-  uint64_t arg1;
-  uint64_t arg2;
-};
-
-uint64_t ZThreadStart(uint64_t thread_cap, uint64_t entry, uint64_t arg1,
-                      uint64_t arg2);
+[[nodiscard]] uint64_t ZThreadStart(uint64_t thread_cap, uint64_t entry,
+                                    uint64_t arg1, uint64_t arg2);
 
 void ZThreadExit();
+
+[[nodiscard]] uint64_t ZAddressSpaceMap(uint64_t as_cap, uint64_t offset,
+                                        uint64_t mem_cap, uint64_t* vaddr);
+[[nodiscard]] uint64_t ZMemoryObjectCreate(uint64_t size, uint64_t* mem_cap);
+
+[[nodiscard]] uint64_t ZDebug(const char* message);

zion/include/zerrors.h

@@ -4,3 +4,4 @@
 #define ZE_NOT_FOUND 0x1
 #define ZE_INVALID 0x2
 #define ZE_DENIED 0x4
+#define ZE_UNIMPLEMENTED 0x8