* Changed arch_debug_save_registers() to take an arch-specific structure

arch_debug_registers instead.
* Call arch_debug_save_registers() on all CPUs when entering the kernel
  debugger.
* Added debug_get_debug_registers() to return a specified CPU's saved
  registers.
* x86:
  - Replaced the previous arch_debug_save_registers() implementation. Disabled
    getting the registers via the gdb interface for the time being.
  - Fixed the "sc", "call", and "calling" commands to also work for threads
    running on another CPU.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35907 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/debug.h

@@ -67,6 +67,10 @@
 #define B_KDEBUG_DONT_PARSE_ARGUMENTS	(0x01)
 #define B_KDEBUG_PIPE_FINAL_RERUN		(0x02)
 
+
+struct arch_debug_registers;
+
+
 struct debugger_module_info {
 	module_info info;
 
@@ -92,8 +96,6 @@ struct debugger_demangle_module_info {
 };
 
 
-extern int dbg_register_file[B_MAX_CPU_COUNT][14];
-
 typedef struct debug_page_fault_info {
 	addr_t	fault_address;
 	addr_t	pc;
@@ -170,6 +172,8 @@ extern status_t	debug_get_next_demangled_argument(uint32* _cookie,
 
 extern struct thread* debug_set_debugged_thread(struct thread* thread);
 extern struct thread* debug_get_debugged_thread();
+extern struct arch_debug_registers* debug_get_debug_registers(int32 cpu);
+
 
 extern status_t	_user_kernel_debugger(const char *message);
 extern void		_user_debug_output(const char *userString);