eliminate os_core, move into base; eliminate regs, move into arch abstraction layer, define x64 regs in x64 layer; move win32 backend for os core (now base) functionality to top-level win32 layer

src/base/base_processes.h

@@ -0,0 +1,87 @@
+// Copyright (c) Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#ifndef BASE_PROCESSES_H
+#define BASE_PROCESSES_H
+
+typedef struct ProcessInfo ProcessInfo;
+struct ProcessInfo
+{
+  U32 pid;
+  B32 large_pages_allowed;
+  String8 binary_path;
+  String8 initial_path;
+  String8 user_program_data_path;
+  String8List module_load_paths;
+  String8List environment;
+};
+
+typedef struct Process Process;
+struct Process
+{
+  U64 u64[1];
+};
+
+typedef struct ProcessNode ProcessNode;
+struct ProcessNode
+{
+  ProcessNode *next;
+  Process v;
+};
+
+typedef struct ProcessList ProcessList;
+struct ProcessList
+{
+  ProcessNode *first;
+  ProcessNode *last;
+  U64 count;
+};
+
+typedef struct ProcessLaunchParams ProcessLaunchParams;
+struct ProcessLaunchParams
+{
+  String8List cmd_line;
+  String8 path;
+  String8List env;
+  B32 inherit_env;
+  B32 debug_subprocesses;
+  B32 consoleless;
+  File stdout_file;
+  File stderr_file;
+  File stdin_file;
+};
+
+////////////////////////////////
+//~ rjf: Handle Type Functions
+
+internal Process process_zero(void);
+internal B32 process_match(Process a, Process b);
+internal void process_list_push(Arena *arena, ProcessList *list, Process p);
+
+////////////////////////////////
+//~ rjf: Process Launcher Helpers
+
+internal Process launch_cmd_line(String8 string);
+internal Process launch_cmd_linef(char *fmt, ...);
+
+////////////////////////////////
+//~ rjf: @per_os_impl Aborting
+
+internal void abort_self(S32 exit_code);
+
+////////////////////////////////
+//~ rjf: @per_os_impl Process Info
+
+internal ProcessInfo *get_process_info(void);
+internal String8 get_current_path(Arena *arena);
+internal U32 get_process_start_time_unix(void);
+
+////////////////////////////////
+//~ rjf: @per_os_impl Child Processes
+
+internal Process process_launch(ProcessLaunchParams *params);
+internal B32 process_join(Process process, U64 endt_us, U64 *exit_code_out);
+internal void process_detach(Process process);
+internal B32 process_kill(Process process);
+
+#endif // BASE_PROCESSES_H