- added getpid(), kill(), link(), unlink()

- modifed read()
- added flush() for UART
- added screen_get_resx(), screen_get_resy(), screen_get_fps()
- added some more initializations in libsys_init()
Committed on the Free edition of March Hare Software CVSNT Server.
Upgrade to CVS Suite for more features and support:
http://march-hare.com/cvsnt/


git-svn-id: http://moon:8086/svn/vhdl/trunk@696 cc03376c-175c-47c8-b038-4cd826a8556b

lib/CPUs/MIPS/bsp/examples/libsys.c

@@ -7,14 +7,38 @@
 #include <stdlib.h>
 #include "libsys.h"
 
+
+// ---------------------------------------------------------------------------------
+// Forward declarations
+// ---------------------------------------------------------------------------------
+void flush(UINT32 port);
+UINT32 GetPort(int file);
+
 // ---------------------------------------------------------------------------------
 // Types
 // ---------------------------------------------------------------------------------
 void libsys_init(void)
 {
+	UINT32 volatile *pVGA_ctrl = (UINT32*)SYS_VGA_CTRL;
+	UINT32 volatile *pITIM_ctrl = (UINT32*)SYS_ITIM_CTRL;
+
+	Screen_clr();
+
+	// Disable timers
+	*pITIM_ctrl = 0;
+
+	// Disable all VGA stuff
+	*pVGA_ctrl = 0;
+
+	// Initialzie syscall support
+	syscalls_init();
+
 	// Initalize debugger
 	dbg_init();
 
+	// flush stdin
+	flush(GetPort(0));
+
 	// Do some initializations here
 
 }
@@ -22,13 +46,13 @@ void libsys_init(void)
 UINT32 GetPort(int file)
 {
 	if (file == 0)
-		return 2;
+		return 0;
 
 	if (file == 1)
-		return 2;
+		return 0;
 
 	if (file == 2)
-		return 0;
+		return 2;
 }
 
 enum
@@ -81,11 +105,7 @@ static uart_if_t uart_if[2] =
 	{(UINT32*)SYS_UART1_STAT, (UINT32*)SYS_UART1_DATA, (UINT32*)SYS_UART1_BAUD}
 };
 
-static ps2_if_t ps2_if[2] =
+extern ps2_if_t ps2_if[];
-{
-	{(UINT32*)SYS_PS2_0_STAT, (UINT32*)SYS_PS2_0_DATA},
-	{(UINT32*)SYS_PS2_1_STAT, (UINT32*)SYS_PS2_1_DATA}
-};
 
 static vga_if_t vga_if =
 {
@@ -318,6 +338,7 @@ static const libsys_key_entry_t __keymap_german[] =
     {0x5d, '#', '\'', '#'},
     {0x0e, '^', '°', '^'},
     {0x61, '<', '>', '|'},
+    {0x66, '\b', '\b', '\b'},
     {0}       //sentinel
 };
 
@@ -607,7 +628,54 @@ void Screen_csr_set_y(UINT32 coord)
 	cg_set_csr_y(&vga_if, coord);
 }
 
+UINT32 Screen_get_resx(void)
+{
+	UINT32 volatile *pVGA_res = (UINT32*)SYS_VGA_RES;
+
+	return (0xFFF & (*pVGA_res >> 0));
+}
+
+UINT32 Screen_get_resy(void)
+{
+	UINT32 volatile *pVGA_res = (UINT32*)SYS_VGA_RES;
+
+	return (0xFFF & (*pVGA_res >> 12));
+}
+
+UINT32 Screen_get_fps(void)
+{
+	UINT32 volatile *pVGA_res = (UINT32*)SYS_VGA_RES;
+
+	return (0xFF & (*pVGA_res >> 24));
+}
+
 // ---------------------------------------------------------------------------------
+void flush(UINT32 port)
+{
+	int c;
+	con_if_in_t *pIF;
+
+	pIF = &con_if_in[port];
+
+	do
+	{
+		switch(pIF->type)
+		{
+			case IF_TYPE_UART:
+			c = UART_readchar((uart_if_t*)pIF->pIF);
+			break;
+
+			case IF_TYPE_PS2:
+			c = con_readchar((ps2_if_t*)pIF->pIF);
+			break;
+
+			default:
+			break;
+		}
+
+	} while(c > 0);
+}
+
 char readchar(UINT32 port)
 {
 	int c;
@@ -837,26 +905,29 @@ int read(int file, char *ptr, int len)
 	int i;
 	char c;
 
-//	sputs("read ("); print_word(file); sputs(")\n");
+//	sputs("read (file="); print_word(file); sputs(", len ="); print_word(len); sputs(")\n");
 	i = 0;
 	port = GetPort(file);
 
 	while (i < len)
 	{
 		c = readchar(port);
-		_putchar(port, c);
+
+		if (c == 0x04)
+			break;
+
 		if ((c == 0x0D) || (c == 0x0A))
 		{
-			if (i==0)
+			writechar(port, 0x0D);
-				continue;
+			ptr[i++] = 0x0D;
-
+			writechar(port, 0x0A);
-			ptr[i++] = c;
+			ptr[i++] = 0x0A;
 			break;
 		}
-		else
+
-		{
+		writechar(port, c);
 		ptr[i++] = c;
-		}
+
 	}
 	return i;
 }
@@ -881,6 +952,38 @@ int isatty(int file)
 	return 1;
 }
 
+int getpid(void)
+{
+	return 1;
+}
+
+#include <errno.h>
+#undef errno
+extern int errno;
+int kill(int pid, int sig)
+{
+	errno = EINVAL;
+	return -1;
+}
+
+#include <errno.h>
+#undef errno
+extern int errno;
+int link(char *old, char *new)
+{
+	errno = EMLINK;
+	return -1;
+}
+
+#include <errno.h>
+#undef errno
+extern int errno;
+int unlink(char *name)
+{
+	errno = ENOENT;
+	return -1;
+}
+
 int sputs(char *pStr)
 {
 	char *start;