From 1acde03a7c0f85aca9919e374e3df6cee6f0bd08 Mon Sep 17 00:00:00 2001
From: Michal Idziorek <m.i@gmx.at>
Date: Thu, 20 Nov 2014 04:51:23 +0100
Subject: workin on syscall interface etc..

---
 userspace/syscalls.c | 76 +++++++++++++++++-----------------------------------
 1 file changed, 25 insertions(+), 51 deletions(-)

(limited to 'userspace/syscalls.c')

diff --git a/userspace/syscalls.c b/userspace/syscalls.c
index b5959eb..7471418 100644
--- a/userspace/syscalls.c
+++ b/userspace/syscalls.c
@@ -1,20 +1,17 @@
-//printf needs following syscalls: sbrk write close fstat isatty lseek read
-//
-
 #include <sys/stat.h>
 #include <string.h>
 #include <stdint.h>
-#include "../fs/fs.h"
+#include "../kernel/syscalls.h"
 
-static int preread;
-static int alloc;
-easywrite(char *c);
+/*
+char *__env1[]={0};
+char *__env2[]={"dupa","test"};
+char **environ={__env1,__env2};
+*/
 
-// init syscalls 
-void syscalls_init()
+void _exit(int ret)
 {
-    // TODO dynamic!
-    alloc=0x300000;
+while(1);
 }
 
 // generic syscall interface!
@@ -43,85 +40,62 @@ int syscall(int call, int p1, int p2, int p3)
 	return ebx;
 }
 
-//
 int close(int file) 
 {
-    return -1;
+    return syscall(SYSCALL_CLOSE,file,0,0);
 }
 
 int fstat(int file, struct stat *st)
 {
-    st->st_mode = S_IFCHR;
-    return 0;
+    return syscall(SYSCALL_FSTAT,file,st,0);
 }
 
 int isatty(int file) 
 {
-    return 1;
+    return syscall(SYSCALL_ISATTY,file,0,0);
 }
 
 int lseek(int file, int ptr, int dir) 
 {
-    if(dir==0)preread=ptr;
-    else{ puts("other modes unsupported sorry"); while(1);}
-    return preread;
+    return syscall(SYSCALL_LSEEK,file,ptr,dir);
 }
 
 int read(int file, char *ptr, int len)
 {
-    return syscall(62,file,ptr,len);
+
+    return syscall(SYSCALL_READ,file,ptr,len);
 }
 
 int readdir(const char *name,fs_dirent  *dirs,int max)
 {
 
-    return syscall(63,name,dirs,max);
+    return syscall(SYSCALL_READDIR,name,dirs,max);
 }
 
 int open(const char *name, int flags, int mode)
 {
-    return name;
+    return syscall(SYSCALL_OPEN,name,flags,mode);
 }
 
 int write(int file, char *ptr, int len) 
 {
-    return syscall(61,file,ptr,len);
+    return syscall(SYSCALL_WRITE,file,ptr,len);
 }
 
 int execve(char *name, char **argv, char **env) 
 {
-
-    return syscall(64,name,argv,env);
+    return syscall(SYSCALL_EXECVE,name,argv,env);
 }
 
 
-
 caddr_t sbrk(int incr) 
 {
-//	    easywrite("syscall: sbrk!!\n");
-	    int oldalloc=alloc;
-	    alloc+=incr;
-	    return oldalloc;
-	    /*
-	    
-            extern char end;	    
-//	    char _end;
-            static char *heap_end;
-            char *prev_heap_end;
-          
-            if (heap_end == 0) {
-              heap_end = &end;
-            }
-            prev_heap_end = heap_end;
-
-            if (heap_end + incr > stack_ptr) {
-              write (1, "Heap and stack collision\n", 25);
-              abort ();
-            }
-          
-            heap_end += incr;
-            return (caddr_t) prev_heap_end;
-	    */
+    static int alloc=0x300000; // TODO: implement properly sbrk!!!
+    int oldalloc=alloc;
+    alloc+=incr;
+    return oldalloc;
+
+    return syscall(SYSCALL_SBRK,incr,0,0);
 }
-//
+
 
-- 
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