Added support for architecture specific debug variables, e.g. for

referencing iframe registers. Their prefix is "$". E.g. "$eax" refers to
the eax register of the current iframe. The features cooperates with the
"in_context" command, i.e. "in_context 92 $eip = 0" will set the eip
register of thread 92 to 0 (thus sealing its fate ;-)).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27192 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/arch/debug.h

@@ -28,6 +28,10 @@ bool arch_debug_contains_call(struct thread *thread, const char *symbol,
 		addr_t start, addr_t end);
 void arch_debug_save_registers(int *);
 
+bool arch_is_debug_variable_defined(const char* variableName);
+status_t arch_set_debug_variable(const char* variableName, uint64 value);
+status_t arch_get_debug_variable(const char* variableName, uint64* value);
+
 #ifdef __cplusplus
 }
 #endif