first commit

src/debug/gdb-userlib.c

@@ -0,0 +1,195 @@
+/*
+ * PSP Software Development Kit - http://www.pspdev.org
+ * -----------------------------------------------------------------------
+ * Licensed under the BSD license, see LICENSE in PSPSDK root for details.
+ *
+ * gdb-userlib.c - GDB support functions for user mode.
+ *
+ * Copyright (c) 2005 James Forshaw <tyranid@gmail.com>
+ *
+ * $Id: gdb-userlib.c 2166 2007-02-04 10:52:49Z tyranid $
+ */
+#include <pspkernel.h>
+#include <pspdebug.h>
+
+#include <string.h>
+
+static int sio_fd = -1;
+
+/* GDB Debug putchar */
+void putDebugChar(char ch)
+{
+	sceIoWrite(sio_fd, &ch, 1);
+}
+
+/* GDB Debug getchar */
+char getDebugChar(void)
+{
+	char ch = 0;
+	int count = 0;
+
+	while(count <= 0)
+	{
+		count = sceIoRead(sio_fd, &ch, 1);
+	}
+
+	return ch;
+}
+
+int g_initialised = 0;
+
+static int io_init(PspIoDrvArg *arg)
+{
+	return 0;
+}
+
+static int io_exit(PspIoDrvArg *arg)
+{
+	return 0;
+}
+
+static int io_read(PspIoDrvFileArg *arg, char *data, int len)
+{
+	int ret = 0;
+	int ch;
+
+	while(ret < len)
+	{
+		ch = pspDebugSioGetchar();
+		if(ch != -1)
+		{
+			data[ret++] = ch & 0xFF;
+		}
+		else
+		{
+			break;
+		}
+	}
+
+	return ret;
+}
+
+static int io_write(PspIoDrvFileArg *arg, const char *data, int len)
+{
+	int ret = 0;
+
+	while(ret < len)
+	{
+		pspDebugSioPutchar(data[ret++]);
+	}
+
+	return ret;
+}
+
+void sceKernelDcacheWBinvAll(void);
+void sceKernelIcacheClearAll(void);
+
+static int io_devctl(PspIoDrvFileArg *arg, const char *devname, unsigned int cmd, void *indata, int inlen, void *outdata, int outlen)
+{
+	pspKernelSetKernelPC();
+	sceKernelDcacheWBinvAll();
+	sceKernelIcacheClearAll();
+
+	return 0;
+}
+
+static PspIoDrvFuncs sio_funcs = 
+{
+	io_init,
+	io_exit,
+	NULL,
+	NULL,
+	io_read,
+	io_write,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	io_devctl,
+	NULL,
+};
+
+static PspIoDrv sio_driver = 
+{
+	"sio", 0x10, 0x800, "SIO", &sio_funcs
+};
+
+int _gdbSupportLibReadByte(unsigned char *address, unsigned char *dest)
+{
+	u32 addr;
+
+	addr = (u32) address;
+	if((addr >= 0x08400000) && (addr < 0x0a000000))
+	{
+		*dest = *address;
+		return 1;
+	}
+
+	/*
+	else if((addr >= 0x88000000) && (addr < 0x8a000000))
+	{
+		*dest = *address;
+		return 1;
+	}
+	*/
+
+	return 0;
+}
+
+int _gdbSupportLibWriteByte(char val, unsigned char *dest)
+{
+	u32 addr;
+
+	addr = (u32) dest;
+	if((addr >= 0x08400000) && (addr < 0x0a000000))
+	{
+		*dest = val;
+		return 1;
+	}
+
+	/*
+	else if((addr >= 0x88000000) && (addr < 0x8a000000))
+	{
+		*dest = val;
+		return 1;
+	}
+	*/
+
+	return 0;
+}
+
+void _gdbSupportLibFlushCaches(void)
+{
+	sceIoDevctl("sio:", 0, NULL, 0, NULL, 0);
+}
+
+int _gdbSupportLibInit(void)
+{
+	int ret;
+
+	if(!g_initialised)
+	{
+		(void) sceIoDelDrv("sio"); /* Ignore error */
+		ret = sceIoAddDrv(&sio_driver);
+		if(ret < 0)
+		{
+			return ret;
+		}
+
+		sio_fd = sceIoOpen("sio:", PSP_O_RDWR, 0);
+
+		g_initialised = 1;
+	}
+
+	return 0;
+}