From 8e3411139b27a3421e9ac75c13f14f99f6dd3137 Mon Sep 17 00:00:00 2001
From: Miguel <m.i@gmx.at>
Date: Sun, 2 Sep 2018 00:08:42 +0200
Subject: syscalls

---
 kernel/syscalls.c | 80 +++++++++++++++++++------------------------------------
 1 file changed, 28 insertions(+), 52 deletions(-)

(limited to 'kernel/syscalls.c')

diff --git a/kernel/syscalls.c b/kernel/syscalls.c
index 56c4ae8..7a0dc50 100644
--- a/kernel/syscalls.c
+++ b/kernel/syscalls.c
@@ -22,6 +22,8 @@ static uint32_t next_fd=0;
 static fifo fifos[MAX_FIFOS];
 static uint32_t next_fifo=0;
 
+extern uint32_t fb_addr;
+
 // screen / terminal
 term_out screen;
 terminal_tty tty1;
@@ -54,9 +56,6 @@ int syscall_gettimeofday(struct timeval *tv, struct timezone *tz)
 
 int syscall_lseek(int file,int ptr,int dir) 
 {
-    #ifdef LOG_SYSCALLS
-    klog("lseek (file=%d, ptr=%d, dir=%d)", file,ptr,dir);
-    #endif
 
     kpanic("unhandled syscall: lseek");
 
@@ -66,9 +65,6 @@ int syscall_lseek(int file,int ptr,int dir)
 // TODO: /dev/console or /dev/tty1 - /dev/ttyN
 int syscall_write(int file, char *buf, int len)
 {
-    #ifdef LOG_SYSCALLS
-    klog("[%d] write(file=%d, buf=0x%08X, len=%d)", task_get_current_pid(),file,buf,len);
-    #endif
 
     for(int i=0;i<len;i++)
     {
@@ -80,9 +76,6 @@ int syscall_write(int file, char *buf, int len)
 
 int syscall_read(int file, char *buf, int len)
 {
-    #ifdef LOG_SYSCALLS
-    klog("read(file=%d, buf=0x%08X, len=%d)", file,buf,len);
-    #endif
     //file 0 = stdin ,  file 1 = stdout , file 2 = stderr
 
     char c;
@@ -105,9 +98,6 @@ int syscall_read(int file, char *buf, int len)
 //TODO: replace with dirent!
 int syscall_readdir(const char *name,fs_dirent *dirs,int max)
 {
-    #ifdef LOG_SYSCALLS
-    klog("readdir(name=0x%08X, dirs=0x%08X,  %d)", name,dirs,max);
-    #endif
 
     return fs_readdir(name,dirs,max);
 }
@@ -116,9 +106,6 @@ int syscall_readdir(const char *name,fs_dirent *dirs,int max)
 int syscall_poll(int file)
 {
     file=2; //workaround
-    #ifdef LOG_SYSCALLS
-    klog("has data waiting?");
-    #endif
 
     return fd_has(&fds[file]);
 }
@@ -126,9 +113,6 @@ int syscall_poll(int file)
 // TODO: DELETE THIS SHIT!
 int syscall_tune(int v1,int v2, int v3)
 {
-    #ifdef LOG_SYSCALLS
-    klog("tuning request");
-    #endif
 
     // osbolete
     /*
@@ -176,29 +160,28 @@ int copy_args(char **in, char **out)
     return count;
 }
 
-int syscall_execve(char *name, char **argv, char **env)
+int syscall_execve(char *name, char **argv, char **env,int pid)
 {
-    #ifdef LOG_SYSCALLS
-    klog("execve (name=0x%08X(%s), argvs=0x%08X,  env=0x%08X)", name,name,argv,env);
-    #endif
-
+    
     int arg_count=0;
     while(argv[arg_count]!=NULL)arg_count++;
 
-    char **argv1=kballoc(1);
+    char **argv1=0x08000000;
     if(argv!=NULL)
     {
         copy_args(argv,argv1);
     }
+
     else{
 	argv1=NULL;
     }
 
-    char **env1=kballoc(1);
+    char **env1=0x08020000;
     if(env!=NULL)
     {
 	copy_args(env,env1);
     }
+
     else{
 	env1=NULL;
     }
@@ -209,17 +192,18 @@ int syscall_execve(char *name, char **argv, char **env)
 
     if(!entry_global)
     {
-	#ifdef LOG_SYSCALLS
-	klog("execve: bailing out!");
-	#endif
+	kpanic("error loading %s",name);
 	return -1; // errror loading
     }
 
+    task_reset(pid,entry_global,0x08fff000);
+    return 0;
+
     /* try to move this to asm */
     //    asm volatile("jmp ."); // loop forever
     //klog("returning to jump addy (0x%08X)", entry_global);
-
-    asm volatile("mov $0x8fff000,%esp"); // set stack at high end of process image
+/*
+    asm volatile("mov $0x08fff000,%esp"); // set stack at high end of process image
 
     asm volatile ("push %0" :: "r" (argv1));
     asm volatile ("push %0" :: "r" (arg_count));
@@ -231,6 +215,7 @@ int syscall_execve(char *name, char **argv, char **env)
 
     asm volatile ("sti");
     asm volatile ("ret");
+    */
 
     // this is never reached!
 }
@@ -245,9 +230,6 @@ int get_max_fd()
 // TODO: allow opening existing files/named pipes
 int syscall_open(char *name, int flags, int mode)
 {
-    #ifdef LOG_SYSCALLS
-    klog("open (name=0x%08X(\"%s\"), flags=%d,  mode=%d)",name, name,flags,mode);
-    #endif
     
     if( next_fifo>=MAX_FIFOS || next_fd>=MAX_FD)kpanic("we ran out of fd's or fifo's");
     
@@ -258,13 +240,20 @@ int syscall_open(char *name, int flags, int mode)
     }
     else
     {
-	// FIRST TIME WE SEE THE GENIUS OF OUR ABSTRACTIONS (I HOPE...)
+
+	// HERE WE SEE THE GENIUS OF OUR ABSTRACTIONS (I HOPE...)
+	
+	if (fb_addr<0x100000)
+	{
 	screen.put_char=console_put_char;
 	screen.update_cursor=update_cursor;
-
-	// FIRST TIME WE SEE THE GENIUS OF OUR ABSTRACTIONS (I HOPE...)
+	}
+	else
+	{
 	screen.put_char=vesa_console_put_char;
 	screen.update_cursor=vesa_update_cursor;
+	}
+
 
 	tty1=terminal_init(&screen,NULL);
 
@@ -284,9 +273,6 @@ int syscall_open(char *name, int flags, int mode)
 //
 int syscall_close(int file,int none1,int none2)  
 {
-    #ifdef LOG_SYSCALLS
-    klog("close (file=%d)", file);
-    #endif
 
     //if(file!=0&&file!=1&&file!=2)
     //    kpanic("unhandled syscall: close");
@@ -297,9 +283,6 @@ int syscall_close(int file,int none1,int none2)
 // TODO: check if file is termminal!
 int syscall_isatty(int file,int none1,int none2)  
 {
-    #ifdef LOG_SYSCALLS
-    klog("isatty (file=%d)", file);
-    #endif
 
     return 1;
 }
@@ -315,9 +298,6 @@ uint32_t syscall_sbrk(int incr, int none1, int none2)
 
     task_set_brk(alloc);
 
-    #ifdef LOG_SYSCALLS
-    klog("sbrk (incr=%d) = 0x%08X", incr,oldalloc);
-    #endif
 
     return oldalloc;
 }
@@ -325,10 +305,6 @@ uint32_t syscall_sbrk(int incr, int none1, int none2)
 // stat, fstat, lstat
 int syscall_stat(const char *path, struct stat *st,int none)
 {
-    #ifdef LOG_SYSCALLS
-    klog("stat (path=0x%08X,stat=0x%08X)", path,st);
-    #endif
-
     st->st_mode = S_IFCHR;
     return 0;
 }
@@ -336,7 +312,7 @@ int syscall_stat(const char *path, struct stat *st,int none)
 /// there also is task_fork, task_wait, task_exit.. which is in scheduler.c
 ////////////////////////////////////////
 
-uint32_t syscall_generic(uint32_t nr,uint32_t p1, uint32_t p2, uint32_t p3)
+uint32_t syscall_generic(uint32_t nr,uint32_t p1, uint32_t p2, uint32_t p3, uint32_t pid)
 {
 
     switch(nr){
@@ -345,9 +321,9 @@ uint32_t syscall_generic(uint32_t nr,uint32_t p1, uint32_t p2, uint32_t p3)
     case  SYSCALL_CLOSE       :
 	return syscall_close(p1,p2,p3);
     case  SYSCALL_EXECVE      :
-	return syscall_execve(p1,p2,p3);
+	return syscall_execve(p1,p2,p3,pid);
     case  SYSCALL_FORK        :
-	return task_fork(p1,p2,p3);
+	return task_fork(pid);
     case  SYSCALL_GETPID      :
 //	return syscall_getpid(p1,p2,p3);
 	return -1;
-- 
cgit v1.2.3