Initial import of qemu-2.4.1HEADmaster

1 files changed, 74 insertions, 0 deletions

diff --git a/roms/ipxe/src/arch/i386/include/gdbmach.h b/roms/ipxe/src/arch/i386/include/gdbmach.h
new file mode 100644
index 00000000..416ae341
--- /dev/null
+++ b/roms/ipxe/src/arch/i386/include/gdbmach.h
@@ -0,0 +1,74 @@
+#ifndef GDBMACH_H
+#define GDBMACH_H
+
+/** @file
+ *
+ * GDB architecture specifics
+ *
+ * This file declares functions for manipulating the machine state and
+ * debugging context.
+ *
+ */
+
+#include <stdint.h>
+
+typedef unsigned long gdbreg_t;
+
+/* The register snapshot, this must be in sync with interrupt handler and the
+ * GDB protocol. */
+enum {
+	GDBMACH_EAX,
+	GDBMACH_ECX,
+	GDBMACH_EDX,
+	GDBMACH_EBX,
+	GDBMACH_ESP,
+	GDBMACH_EBP,
+	GDBMACH_ESI,
+	GDBMACH_EDI,
+	GDBMACH_EIP,
+	GDBMACH_EFLAGS,
+	GDBMACH_CS,
+	GDBMACH_SS,
+	GDBMACH_DS,
+	GDBMACH_ES,
+	GDBMACH_FS,
+	GDBMACH_GS,
+	GDBMACH_NREGS,
+	GDBMACH_SIZEOF_REGS = GDBMACH_NREGS * sizeof ( gdbreg_t )
+};
+
+/* Breakpoint types */
+enum {
+	GDBMACH_BPMEM,
+	GDBMACH_BPHW,
+	GDBMACH_WATCH,
+	GDBMACH_RWATCH,
+	GDBMACH_AWATCH,
+};
+
+/* Interrupt vectors */
+extern void gdbmach_nocode_sigfpe ( void );
+extern void gdbmach_nocode_sigtrap ( void );
+extern void gdbmach_nocode_sigstkflt ( void );
+extern void gdbmach_nocode_sigill ( void );
+extern void gdbmach_withcode_sigbus ( void );
+extern void gdbmach_withcode_sigsegv ( void );
+
+static inline void gdbmach_set_pc ( gdbreg_t *regs, gdbreg_t pc ) {
+	regs [ GDBMACH_EIP ] = pc;
+}
+
+static inline void gdbmach_set_single_step ( gdbreg_t *regs, int step ) {
+	regs [ GDBMACH_EFLAGS ] &= ~( 1 << 8 ); /* Trace Flag (TF) */
+	regs [ GDBMACH_EFLAGS ] |= ( step << 8 );
+}
+
+static inline void gdbmach_breakpoint ( void ) {
+	__asm__ __volatile__ ( "int $3\n" );
+}
+
+extern int gdbmach_set_breakpoint ( int type, unsigned long addr, size_t len, int enable );
+
+extern void gdbmach_init ( void );
+
+#endif /* GDBMACH_H */