* alpha-linux-tdep.c (alpha_linux_sigtramp_offset_1): New.

	(alpha_linux_sigtramp_offset): Use it.  Make static.
	(alpha_linux_sigcontext_addr): Handle __NR_rt_sigreturn;
	update for new frame model.
	* alpha-mdebug-tdep.c: New file.
	* alpha-osf1-tdep.c (alpha_call_dummy_address): Move from alpha-tdep.c.
	(alpha_osf1_init_abi): Install it.
	* alpha-tdep.c (PROC_*): Move to alpha-mdebug-tdep.c.
	(linked_proc_desc_table): Remove.
	(alpha_frame_past_sigtramp_frame): Remove.
	(alpha_dynamic_sigtramp_offset): Remove.
	(ALPHA_PROC_SIGTRAMP_MAGIC): Remove.
	(alpha_proc_desc_is_dyn_sigtramp): Remove.
	(alpha_set_proc_desc_is_dyn_sigtramp): Remove.
	(push_sigtramp_desc): Remove.
	(alpha_cannot_fetch_register): Use ALPHA_FP_REGNUM.
	(alpha_cannot_store_register): Likewise.
	(alpha_sigcontext_addr): Remove.
	(alpha_find_saved_regs): Remove.
	(alpha_frame_init_saved_regs): Remove.
	(alpha_init_frame_pc_first): Remove.
	(read_next_frame_reg): Remove.
	(alpha_frame_saved_pc): Remove.
	(alpha_saved_pc_after_call): Remove.
	(temp_proc_desc, temp_saved_regs): Remove.
	(alpha_about_to_return): Remove.
	(cached_proc_desc): Remove.
	(alpha_frame_chain): Remove.
	(alpha_print_extra_frame_info): Remove.
	(alpha_init_extra_frame_info): Remove.
	(alpha_frame_locals_address): Remove.
	(alpha_frame_args_address): Remove.
	(alpha_push_arguments): Use ALPHA_REGISTER_BYTES not sizeof CORE_ADDR.
	(alpha_push_dummy_frame): Remove.
	(alpha_pop_frame): Remove.
	(alpha_after_prologue): Rename from after_prologue; remove mdebug bits.
	(alpha_read_insn): New.
	(alpha_skip_prologue): Merge alpha_skip_prologue_internal; adjust
	for different insn encodings.
	(alpha_in_lenient_prologue): Remove.
	(struct alpha_sigtramp_unwind_cache): New.
	(alpha_sigtramp_frame_unwind_cache): New.
	(alpha_sigtramp_register_address): New.
	(alpha_sigtramp_frame_this_id): New.
	(alpha_sigtramp_frame_prev_register): New.
	(alpha_sigtramp_frame_unwind): New.
	(alpha_sigtramp_frame_p): New.
	(struct alpha_heuristic_unwind_cache): New.
	(alpha_heuristic_proc_start): Rename from heuristic_proc_start;
	don't count nop insns that occur between functions.
	(alpha_heuristic_frame_unwind_cache): New; incorporate much of
	heuristic_proc_desc, but without the mdebug wrapping.
	(alpha_heuristic_frame_this_id): New.
	(alpha_heuristic_frame_prev_register): New.
	(alpha_heuristic_frame_unwind): New.
	(alpha_heuristic_frame_p): New.
	(alpha_heuristic_frame_base_address): New.
	(alpha_heuristic_frame_base): New.
	(alpha_unwind_dummy_id): New.
	(alpha_unwind_pc): New.
	(alpha_gdbarch_init): Don't set skip_sigtramp_frame.  Kill use of
	frame related deprecated initializations; install replacements.
	(alpha_dump_tdep): Remove.
	* alpha-tdep.h (struct gdbarch_tdep): Remove skip_sigtramp_frame.
	(alpha_read_insn, alpha_after_prologue,
	alpha_heuristic_frame_unwind_cache, alpha_heuristic_frame_this_id,
	alpha_heuristic_frame_prev_register,
	alpha_heuristic_frame_base_address, alpha_mdebug_init_abi): Declare.
	* config/alpha/alpha-linux.mt (TDEPFILES): Add alpha-mdebug-tdep.o.
	* config/alpha/tm-alpha.h (PRINT_EXTRA_FRAME_INFO): Remove.
	* config/alpha/tm-alphalinux.h (SIGTRAMP_START, SIGTRAMP_END): Remove.

1 files changed, 20 insertions, 8 deletions

diff --git a/gdb/alpha-tdep.h b/gdb/alpha-tdep.h
index 0e8aefbfe16..412ec37c5a9 100644
--- a/gdb/alpha-tdep.h
+++ b/gdb/alpha-tdep.h
@@ -80,19 +80,15 @@
 /* Target-dependent structure in gdbarch.  */
 struct gdbarch_tdep
 {
-  CORE_ADDR vm_min_address;	/* used by heuristic_proc_start */
+  CORE_ADDR vm_min_address;	/* Used by alpha_heuristic_proc_start.  */
 
   /* If PC is inside a dynamically-generated signal trampoline function
      (i.e. one copied onto the user stack at run-time), return how many
      bytes PC is beyond the start of that function.  Otherwise, return -1.  */
   LONGEST (*dynamic_sigtramp_offset) (CORE_ADDR);
 
-  /* If FRAME refers to a sigtramp frame, return the address of the next
-     frame.  */
-  CORE_ADDR (*skip_sigtramp_frame) (struct frame_info *, CORE_ADDR);
-
-  /* Translate a signal handler frame into the address of the sigcontext
-     structure for that signal handler.  */
+  /* Translate a signal handler stack base address into the address of
+     the sigcontext structure for that signal handler.  */
   CORE_ADDR (*sigcontext_addr) (struct frame_info *);
 
   int jb_pc;			/* Offset to PC value in jump buffer.
@@ -101,6 +97,22 @@ struct gdbarch_tdep
   size_t jb_elt_size;		/* And the size of each entry in the buf. */
 };
 
-void alpha_software_single_step (enum target_signal, int);
+extern unsigned int alpha_read_insn (CORE_ADDR pc);
+extern void alpha_software_single_step (enum target_signal, int);
+
+/* Let other files poke at the heuristic unwinder.  */
+extern CORE_ADDR alpha_after_prologue (CORE_ADDR pc);
+extern struct alpha_heuristic_unwind_cache *
+  alpha_heuristic_frame_unwind_cache (struct frame_info *, void **, CORE_ADDR);
+extern void alpha_heuristic_frame_this_id (struct frame_info *, void **,
+					   struct frame_id *);
+extern void alpha_heuristic_frame_prev_register (struct frame_info *,
+						 void **, int, int *,
+						 enum lval_type *,
+						 CORE_ADDR *, int *, void *);
+extern CORE_ADDR alpha_heuristic_frame_base_address (struct frame_info *,
+						     void **);
+
+extern void alpha_mdebug_init_abi (struct gdbarch_info, struct gdbarch *);
 
 #endif /* ALPHA_TDEP_H */