2003-01-03 Andrew Cagney <cagney@redhat.com>

[deliverable/binutils-gdb.git] / gdb / mips-tdep.c

diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index 799415a390a0a2f11c49761784ef5d1868d73123..1aa369666b214f7d8c59544f2a0d7c2078da1f2e 100644 (file)
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -1459,7 +1459,7 @@ mips_find_saved_regs (struct frame_info *fci)
   /* Don't bother unless we are inside a function prologue.  Outside the
      prologue, we know where everything is. */
 
-       && in_prologue (fci->pc, PROC_LOW_ADDR (proc_desc))
+       && in_prologue (get_frame_pc (fci), PROC_LOW_ADDR (proc_desc))
 
   /* Not sure exactly what kernel_trap means, but if it means
      the kernel saves the registers without a prologue doing it,
@@ -1483,7 +1483,7 @@ mips_find_saved_regs (struct frame_info *fci)
 
       /* Scan through this function's instructions preceding the current
          PC, and look for those that save registers.  */
-      while (addr < fci->pc)
+      while (addr < get_frame_pc (fci))
        {
          inst = mips_fetch_instruction (addr);
          if (pc_is_mips16 (addr))
@@ -1699,7 +1699,7 @@ mips_frame_saved_pc (struct frame_info *frame)
   int pcreg = (get_frame_type (frame) == SIGTRAMP_FRAME) ? PC_REGNUM
   : (proc_desc ? PROC_PC_REG (proc_desc) : RA_REGNUM);
 
-  if (DEPRECATED_PC_IN_CALL_DUMMY (frame->pc, 0, 0))
+  if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), 0, 0))
     {
       LONGEST tmp;
       frame_unwind_signed_register (frame, PC_REGNUM, &tmp);
@@ -1714,7 +1714,13 @@ mips_frame_saved_pc (struct frame_info *frame)
 }
 
 static struct mips_extra_func_info temp_proc_desc;
-static CORE_ADDR temp_saved_regs[NUM_REGS];
+
+/* This hack will go away once the get_prev_frame() code has been
+   modified to set the frame's type first.  That is BEFORE init extra
+   frame info et.al.  is called.  This is because it will become
+   possible to skip the init extra info call for sigtramp and dummy
+   frames.  */
+static CORE_ADDR *temp_saved_regs;
 
 /* Set a register's saved stack address in temp_saved_regs.  If an address
    has already been set for this register, do nothing; this way we will
@@ -2026,6 +2032,7 @@ mips32_heuristic_proc_desc (CORE_ADDR start_pc, CORE_ADDR limit_pc,
   CORE_ADDR cur_pc;
   CORE_ADDR frame_addr = 0;    /* Value of $r30. Used by gcc for frame-pointer */
 restart:
+  temp_saved_regs = xrealloc (temp_saved_regs, SIZEOF_FRAME_SAVED_REGS);
   memset (temp_saved_regs, '\0', SIZEOF_FRAME_SAVED_REGS);
   PROC_FRAME_OFFSET (&temp_proc_desc) = 0;
   PROC_FRAME_ADJUST (&temp_proc_desc) = 0;     /* offset of FP from SP */
@@ -2134,7 +2141,8 @@ heuristic_proc_desc (CORE_ADDR start_pc, CORE_ADDR limit_pc,
   if (start_pc == 0)
     return NULL;
   memset (&temp_proc_desc, '\0', sizeof (temp_proc_desc));
-  memset (&temp_saved_regs, '\0', SIZEOF_FRAME_SAVED_REGS);
+  temp_saved_regs = xrealloc (temp_saved_regs, SIZEOF_FRAME_SAVED_REGS);
+  memset (temp_saved_regs, '\0', SIZEOF_FRAME_SAVED_REGS);
   PROC_LOW_ADDR (&temp_proc_desc) = start_pc;
   PROC_FRAME_REG (&temp_proc_desc) = SP_REGNUM;
   PROC_PC_REG (&temp_proc_desc) = RA_REGNUM;
@@ -2447,7 +2455,7 @@ mips_frame_chain (struct frame_info *frame)
       && !(get_frame_type (frame) == SIGTRAMP_FRAME)
       /* For a generic dummy frame, let get_frame_pointer() unwind a
          register value saved as part of the dummy frame call.  */
-      && !(DEPRECATED_PC_IN_CALL_DUMMY (frame->pc, 0, 0)))
+      && !(DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), 0, 0)))
     return 0;
   else
     return get_frame_pointer (frame, proc_desc);
@@ -2460,7 +2468,7 @@ mips_init_extra_frame_info (int fromleaf, struct frame_info *fci)
 
   /* Use proc_desc calculated in frame_chain */
   mips_extra_func_info_t proc_desc =
-    fci->next ? cached_proc_desc : find_proc_desc (fci->pc, fci->next, 1);
+    fci->next ? cached_proc_desc : find_proc_desc (get_frame_pc (fci), fci->next, 1);
 
   fci->extra_info = (struct frame_extra_info *)
     frame_obstack_alloc (sizeof (struct frame_extra_info));
@@ -2474,10 +2482,10 @@ mips_init_extra_frame_info (int fromleaf, struct frame_info *fci)
       /* This may not be quite right, if proc has a real frame register.
          Get the value of the frame relative sp, procedure might have been
          interrupted by a signal at it's very start.  */
-      if (fci->pc == PROC_LOW_ADDR (proc_desc)
+      if (get_frame_pc (fci) == PROC_LOW_ADDR (proc_desc)
          && !PROC_DESC_IS_DUMMY (proc_desc))
-       fci->frame = read_next_frame_reg (fci->next, SP_REGNUM);
-      else if (DEPRECATED_PC_IN_CALL_DUMMY (fci->pc, 0, 0))
+       deprecated_update_frame_base_hack (fci, read_next_frame_reg (fci->next, SP_REGNUM));
+      else if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fci), 0, 0))
        /* Do not ``fix'' fci->frame.  It will have the value of the
            generic dummy frame's top-of-stack (since the draft
            fci->frame is obtained by returning the unwound stack
@@ -2486,7 +2494,7 @@ mips_init_extra_frame_info (int fromleaf, struct frame_info *fci)
            part of the dummy frames data.  */
        /* Do nothing.  */;
       else
-       fci->frame = get_frame_pointer (fci->next, proc_desc);
+       deprecated_update_frame_base_hack (fci, get_frame_pointer (fci->next, proc_desc));
 
       if (proc_desc == &temp_proc_desc)
        {
@@ -2499,9 +2507,9 @@ mips_init_extra_frame_info (int fromleaf, struct frame_info *fci)
          /* FIXME: cagney/2002-11-18: This problem will go away once
              frame.c:get_prev_frame() is modified to set the frame's
              type before calling functions like this.  */
-         find_pc_partial_function (fci->pc, &name,
+         find_pc_partial_function (get_frame_pc (fci), &name,
                                    (CORE_ADDR *) NULL, (CORE_ADDR *) NULL);
-         if (!PC_IN_SIGTRAMP (fci->pc, name))
+         if (!PC_IN_SIGTRAMP (get_frame_pc (fci), name))
            {
              frame_saved_regs_zalloc (fci);
              memcpy (fci->saved_regs, temp_saved_regs, SIZEOF_FRAME_SAVED_REGS);
@@ -3807,7 +3815,7 @@ mips_pop_frame (void)
   CORE_ADDR new_sp = get_frame_base (frame);
   mips_extra_func_info_t proc_desc = frame->extra_info->proc_desc;
 
-  if (DEPRECATED_PC_IN_CALL_DUMMY (frame->pc, 0, 0))
+  if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), 0, 0))
     {
       generic_pop_dummy_frame ();
       flush_cached_frames ();
@@ -5757,6 +5765,11 @@ mips_gdbarch_init (struct gdbarch_info info,
   set_gdbarch_elf_make_msymbol_special (gdbarch, 
                                        mips_elf_make_msymbol_special);
 
+  if (osabi == GDB_OSABI_IRIX)
+    set_gdbarch_num_regs (gdbarch, 71);
+  else
+    set_gdbarch_num_regs (gdbarch, 90);
+
   switch (mips_abi)
     {
     case MIPS_ABI_O32: