Merging support files from cogvm branch.

git-svn-id: http://squeakvm.org/svn/squeak/trunk/platforms/Cross/plugins@2410 fa1542d4-bde8-0310-ad64-8ed1123d492a

Author: andreas

BochsIA32Plugin/BochsIA32Plugin.h

@@ -0,0 +1,62 @@
+/* Bochs seems to use error code 1 for execution errors.
+ * So we use > 1 for various errors
+ */
+#define NoError 0
+#define ExecutionError 1
+#define BadCPUInstance 2
+#define MemoryBoundsError 3
+#define PanicError 4
+#define UnsupportedOperationError 5
+#define SomethingLoggedError 6
+
+#if !defined(ulong)
+typedef unsigned long ulong;
+#endif
+
+/*
+ * Answer a pointer to a new Bochs IA32 CPU (an instance of C++ class bx_cpu_c)
+ */
+extern void *newCPU();
+/*
+ * reset the cpu to register contents 0, protected 32-bit mode.
+ */
+extern int   resetCPU(void *cpu);
+/*
+ * Single-step *cpu (a bx_cpu_c instance) using memory as its memory.
+ * Answer 0 on success, or an integer error code if something went awry.
+ */
+extern int  singleStepCPUInSizeMinAddrReadWrite(void *cpu, void *memory,
+					ulong byteSize, ulong minReadAddr, ulong minWriteAddr);
+/*
+ * Run *cpu (a bx_cpu_c instance) using memory as its memory.
+ * Answer an integer error code when the processor hits some exception.
+ * Answer 0 when it is interrupted.
+ */
+extern int	runCPUInSizeMinAddrReadWrite(void *cpu, void *memory,
+					ulong byteSize, ulong minReadAddr, ulong minWriteAddr);
+/*
+ * Flush any icache entries from start to end
+ */
+extern void	flushICacheFromTo(void *cpu, ulong strt, ulong nd);
+/*
+ * force runCPUInSize to exit asap.  Used by interrupts.
+ */
+extern void	forceStopRunning(void);
+/*
+ * The previous entry in the interruptCheckChain so forceStopRunning can chain.
+ */
+extern void (*prevInterruptCheckChain)();
+/*
+ * Disassemble the instruction at address in memory, writing the output to the
+ * log.
+ */
+extern int disassembleForAtInSize(void *cpu, ulong laddr,
+									void *memory, ulong byteSize);
+/*
+ * The saved error if the previous singleStepIn failed.
+ */
+extern int   errorAcorn();
+/*
+ * The current log (if singleStep failed with SomethingLoggedError).
+ */
+extern char *getlog(long *len);