From 71e4f3812982dba2efb471283d310224e8db363e Mon Sep 17 00:00:00 2001
From: "Kartik K. Agaram" <vc@akkartik.com>
Date: Wed, 3 Mar 2021 22:09:50 -0800
Subject: 7842 - new directory organization

Baremetal is now the default build target and therefore has its sources
at the top-level. Baremetal programs build using the phase-2 Mu toolchain
that requires a Linux kernel. This phase-2 codebase which used to be at
the top-level is now under the linux/ directory. Finally, the phase-2 toolchain,
while self-hosting, has a way to bootstrap from a C implementation, which
is now stored in linux/bootstrap. The bootstrap C implementation uses some
literate programming tools that are now in linux/bootstrap/tools.

So the whole thing has gotten inverted. Each directory should build one
artifact and include the main sources (along with standard library). Tools
used for building it are relegated to sub-directories, even though those
tools are often useful in their own right, and have had lots of interesting
programs written using them.

A couple of things have gotten dropped in this process:
  - I had old ways to run on just a Linux kernel, or with a Soso kernel.
    No more.
  - I had some old tooling for running a single test at the cursor. I haven't
    used that lately. Maybe I'll bring it back one day.

The reorg isn't done yet. Still to do:
  - redo documentation everywhere. All the README files, all other markdown,
    particularly vocabulary.md.
  - clean up how-to-run comments at the start of programs everywhere
  - rethink what to do with the html/ directory. Do we even want to keep
    supporting it?

In spite of these shortcomings, all the scripts at the top-level, linux/
and linux/bootstrap are working. The names of the scripts also feel reasonable.
This is a good milestone to take stock at.
---
 tools/iso/kernel.soso/process.h | 132 ----------------------------------------
 1 file changed, 132 deletions(-)
 delete mode 100644 tools/iso/kernel.soso/process.h

(limited to 'tools/iso/kernel.soso/process.h')

diff --git a/tools/iso/kernel.soso/process.h b/tools/iso/kernel.soso/process.h
deleted file mode 100644
index a2979714..00000000
--- a/tools/iso/kernel.soso/process.h
+++ /dev/null
@@ -1,132 +0,0 @@
-#ifndef PROCESS_H
-#define PROCESS_H
-
-#define KERNELMODE	0
-#define USERMODE	1
-
-#define MAX_OPENED_FILES 20
-
-#include "common.h"
-#include "fs.h"
-#include "fifobuffer.h"
-#include "spinlock.h"
-
-typedef enum ThreadState {
-    TS_RUN,
-    TS_WAITIO,
-    TS_WAITCHILD,
-    TS_SLEEP,
-    TS_SUSPEND,
-    TS_YIELD
-} ThreadState;
-
-struct Process {
-    char name[32];
-
-    uint32 pid;
-
-
-    uint32 *pd;
-
-    uint32 b_exec;
-    uint32 e_exec;
-    uint32 b_bss;
-    uint32 e_bss;
-
-    char *heapBegin;
-    char *heapEnd;
-    char *heapNextUnallocatedPageBegin;
-
-    uint8 mmappedVirtualMemory[RAM_AS_4M_PAGES / 8];
-
-    uint32 signal;
-    void* sigfn[32];
-
-    FileSystemNode* tty;
-
-    FileSystemNode* workingDirectory;
-
-    //Thread* mainThread;
-
-    Process* parent;
-
-    // Save exit status of child process that most recently performed exit().
-    int32 childExitStatusPresent;  // boolean
-    int32 childExitStatus;
-
-    File* fd[MAX_OPENED_FILES];
-
-} __attribute__ ((packed));
-
-typedef struct Process Process;
-
-struct Thread {
-    uint32 threadId;
-
-    struct {
-        uint32 eax, ecx, edx, ebx;
-        uint32 esp, ebp, esi, edi;
-        uint32 eip, eflags;
-        uint32 cs:16, ss:16, ds:16, es:16, fs:16, gs:16;
-        uint32 cr3;
-    } regs __attribute__ ((packed));
-
-    struct {
-        uint32 esp0;
-        uint16 ss0;
-        uint32 stackStart;
-    } kstack __attribute__ ((packed));
-
-
-    uint32 userMode;
-
-    ThreadState state;
-
-    Process* owner;
-
-    uint32 yield;
-
-    uint32 contextSwitchCount;
-    uint32 totalContextSwitchCount;
-    uint32 totalContextSwitchCountPrevious;
-
-    void* state_privateData;
-
-    FifoBuffer* messageQueue;
-    Spinlock messageQueueLock;
-
-    struct Thread* next;
-
-};
-
-typedef struct Thread Thread;
-
-typedef struct TimerInt_Registers {
-    uint32 gs, fs, es, ds;
-    uint32 edi, esi, ebp, esp, ebx, edx, ecx, eax; //pushed by pushad
-    uint32 eip, cs, eflags, esp_if_privilege_change, ss_if_privilege_change; //pushed by the CPU
-} TimerInt_Registers;
-
-typedef void (*Function0)();
-
-void initializeTasking();
-Process* createUserProcessFromElfData(const char* name, uint8* elfData, char *const argv[], char *const envp[], Process* parent, FileSystemNode* tty);
-Process* createUserProcessEx(const char* name, uint32 processId, uint32 threadId, Function0 func, uint8* elfData, char *const argv[], char *const envp[], Process* parent, FileSystemNode* tty);
-void destroyThread(Thread* thread);
-void destroyProcess(Process* process);
-void threadStateToString(ThreadState state, uint8* buffer, uint32 bufferSize);
-void waitForSchedule();
-void yield(uint32 count);
-int32 getEmptyFd(Process* process);
-int32 addFileToProcess(Process* process, File* file);
-int32 removeFileFromProcess(Process* process, File* file);
-Thread* getThreadById(uint32 threadId);
-Thread* getPreviousThread(Thread* thread);
-Thread* getMainKernelThread();
-Thread* getCurrentThread();
-void schedule(TimerInt_Registers* registers);
-BOOL isThreadValid(Thread* thread);
-BOOL isProcessValid(Process* process);
-uint32 getSystemContextSwitchCount();
-
-#endif // PROCESS_H
-- 
cgit 1.4.1-2-gfad0