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changeset 19:4717146a7606

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Initial support for M68k reset vector, rather than starting at an arbitrary address
author Mike Pavone <pavone@retrodev.com>
date Tue, 04 Dec 2012 19:25:54 -0800
parents 3e7bfde7606e
children f664eeb55cb4
files fib.s68 m68k_to_x86.c trans.c
diffstat 3 files changed, 11 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/fib.s68	Tue Dec 04 19:13:12 2012 -0800
+++ b/fib.s68	Tue Dec 04 19:25:54 2012 -0800
@@ -1,4 +1,5 @@
-	lea 0, a7
+    dc.l $0, start
+start:
 	moveq #10, d0
 	bsr fib
 	illegal
--- a/m68k_to_x86.c	Tue Dec 04 19:13:12 2012 -0800
+++ b/m68k_to_x86.c	Tue Dec 04 19:25:54 2012 -0800
@@ -786,6 +786,14 @@
 	m68k_start_context(addr, context);
 }
 
+void m68k_reset(m68k_context * context)
+{
+    //TODO: Make this actually use the normal read functions
+    context->aregs[7] = context->mem_pointers[0][0] << 16 | context->mem_pointers[0][1];
+    uint32_t address = context->mem_pointers[0][2] << 16 | context->mem_pointers[0][3];
+    start_68k_context(context, address);
+}
+
 void init_x86_68k_opts(x86_68k_options * opts)
 {
 	opts->flags = 0;
--- a/trans.c	Tue Dec 04 19:13:12 2012 -0800
+++ b/trans.c	Tue Dec 04 19:25:54 2012 -0800
@@ -34,6 +34,6 @@
 	//work RAM
 	context.mem_pointers[1] = malloc(64 * 1024);
 	translate_m68k_stream(transbuf, transbuf + size, 0, &context);
-	start_68k_context(&context, 0);
+	m68k_reset(&context);
 	return 0;
 }