Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / openbios / arch / ppc / kernel.c

diff --git a/qemu/roms/openbios/arch/ppc/kernel.c b/qemu/roms/openbios/arch/ppc/kernel.c
new file mode 100644 (file)
index 0000000..28f2965
--- /dev/null
+++ b/qemu/roms/openbios/arch/ppc/kernel.c
@@ -0,0 +1,99 @@
+/*
+ *   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 */
+#define DICTIONARY_SIZE        (512*1024)      /* 512K for the dictionary   */
+
+static ucell           *memory;
+
+/************************************************************************/
+/*     F U N C T I O N S                                               */
+/************************************************************************/
+
+int
+forth_segv_handler( char *segv_addr )
+{
+       ucell addr = 0xdeadbeef;
+
+       if( PC >= (ucell) dict && PC <= (ucell) dict + dicthead )
+               addr = *(ucell *) PC;
+
+       printk("panic: segmentation violation at %x\n", (int)segv_addr);
+       printk("dict=0x%x here=0x%x(dict+0x%x) pc=0x%x(dict+0x%x)\n",
+              (int)dict, (int)(dict + dicthead), dicthead,
+              PC, PC - (ucell) 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( (ucell)memory );
+       PUSH( (ucell)memory + MEMORY_SIZE );
+}
+
+int
+initialize_forth( void )
+{
+       dict = malloc(DICTIONARY_SIZE);
+       load_dictionary( forth_dictionary, 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;
+}