1 files changed, 115 insertions, 0 deletions
diff --git a/qemu/roms/openbios/arch/ppc/qemu/kernel.c b/qemu/roms/openbios/arch/ppc/qemu/kernel.c
new file mode 100644
index 000000000..b26fba5f7
--- /dev/null
+++ b/qemu/roms/openbios/arch/ppc/qemu/kernel.c
@@ -0,0 +1,115 @@
+/*
+ *   Creation Date: <2003/10/25 14:07:17 samuel>
+ *   Time-stamp: <2004/08/28 17:48:19 stepan>
+ *
+ *	<kernel.c>
+ *
+ *   Copyright (C) 2003, 2004 Samuel Rydh (samuel@ibrium.se)
+ *   Copyright (C) 2003, 2004 Stefan Reinauer
+ *
+ *   Based upon unix.c (from OpenBIOS):
+ *
+ *   Copyright (C) 2003 Patrick Mauritz, Stefan Reinauer
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   version 2
+ *
+ */
+
+#include "config.h"
+#include "dict.h"
+#include "libopenbios/bindings.h"
+#include "kernel/stack.h"
+#include "kernel/kernel.h"
+#include "libc/string.h"
+#include "kernel.h"
+
+#define MEMORY_SIZE	(256*1024)	/* 256K ram for hosted system */
+/* 512K for the dictionary  */
+#define DICTIONARY_SIZE (512 * 1024 / sizeof(ucell))
+#ifdef __powerpc64__
+#define DICTIONARY_BASE 0xfff08000 /* this must match the value in ldscript! */
+#define DICTIONARY_SECTION __attribute__((section(".data.dict")))
+#else
+#define DICTIONARY_BASE ((ucell)((char *)&forth_dictionary))
+#define DICTIONARY_SECTION
+#endif
+
+static ucell forth_dictionary[DICTIONARY_SIZE] DICTIONARY_SECTION = {
+#include "qemu-dict.h"
+};
+
+static ucell 		*memory;
+
+/************************************************************************/
+/*	F U N C T I O N S						*/
+/************************************************************************/
+
+int
+forth_segv_handler( char *segv_addr )
+{
+	ucell addr = 0xdeadbeef;
+
+	if( PC >= pointer2cell(dict) && PC <= pointer2cell(dict) + dicthead )
+		addr = *(ucell *)cell2pointer(PC);
+
+	printk("panic: segmentation violation at 0x%p\n", segv_addr);
+	printk("dict=0x%p here=0x%p(dict+0x%x) pc=0x%x(dict+0x%x)\n",
+	       dict, (char*)dict + dicthead, dicthead,
+	       PC, PC - pointer2cell(dict));
+	printk("dstackcnt=%d rstackcnt=%d instruction=%x\n",
+	       dstackcnt, rstackcnt, addr);
+
+#ifdef DEBUG_DSTACK
+	printdstack();
+#endif
+#ifdef DEBUG_RSTACK
+	printrstack();
+#endif
+	return -1;
+}
+
+/*
+ * allocate memory and prepare engine for memory management.
+ */
+
+static void
+init_memory( void )
+{
+	memory = malloc(MEMORY_SIZE);
+	if( !memory )
+		panic("panic: not enough memory on host system.\n");
+
+	/* we push start and end of memory to the stack
+	 * so that it can be used by the forth word QUIT
+	 * to initialize the memory allocator
+	 */
+
+	PUSH( pointer2cell(memory) );
+	PUSH( pointer2cell(memory) + MEMORY_SIZE );
+}
+
+int
+initialize_forth( void )
+{
+        dict = (unsigned char *)forth_dictionary;
+        dicthead = (ucell)FORTH_DICTIONARY_END;
+        last = (ucell *)((unsigned char *)forth_dictionary +
+                         FORTH_DICTIONARY_LAST);
+        dictlimit = sizeof(forth_dictionary);
+
+	forth_init();
+
+	PUSH_xt( bind_noname_func(arch_of_init) );
+	fword("PREPOST-initializer");
+
+	PC = (ucell)findword("initialize-of");
+	if( PC ) {
+		init_memory();
+		enterforth((xt_t)PC);
+		free( memory );
+	}
+	free( dict );
+	return 0;
+}