Implement "to_stopped_by_hw_breakpoint" for x86 debug registers.

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

diff --git a/gdb/bfin-tdep.c b/gdb/bfin-tdep.c
index c75858ba985595d26a02104bb67c7a0ccea9aa4e..63fbf6209e2c86dcdeea54e6c0b510f0f3599ff6 100644 (file)
--- a/gdb/bfin-tdep.c
+++ b/gdb/bfin-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for Analog Devices Blackfin processor, for GDB.
 
-   Copyright (C) 2005-2016 Free Software Foundation, Inc.
+   Copyright (C) 2005-2018 Free Software Foundation, Inc.
 
    Contributed by Analog Devices, Inc.
 
@@ -241,6 +241,8 @@ static const int map_gcc_gdb[] =
   BFIN_LB1_REGNUM
 };
 
+/* Big enough to hold the size of the largest register in bytes.  */
+#define BFIN_MAX_REGISTER_SIZE 4
 
 struct bfin_frame_cache
 {
@@ -601,20 +603,12 @@ bfin_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
     return bfin_breakpoint;
 }
 
-/* This function implements the 'breakpoint_from_pc' gdbarch method.
-   It returns a pointer to a string of bytes that encode a breakpoint
-   instruction, stores the length of the string to *lenptr, and
-   adjusts the program counter (if necessary) to point to the actual
-   memory location where the breakpoint should be inserted.  */
-
-GDBARCH_BREAKPOINT_FROM_PC (bfin)
-
 static void
 bfin_extract_return_value (struct type *type,
                           struct regcache *regs,
                           gdb_byte *dst)
 {
-  struct gdbarch *gdbarch = get_regcache_arch (regs);
+  struct gdbarch *gdbarch = regs->arch ();
   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   bfd_byte *valbuf = dst;
   int len = TYPE_LENGTH (type);
@@ -694,10 +688,10 @@ bfin_register_name (struct gdbarch *gdbarch, int i)
 }
 
 static enum register_status
-bfin_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
+bfin_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache,
                           int regnum, gdb_byte *buffer)
 {
-  gdb_byte *buf = (gdb_byte *) alloca (MAX_REGISTER_SIZE);
+  gdb_byte buf[BFIN_MAX_REGISTER_SIZE];
   enum register_status status;
 
   if (regnum != BFIN_CC_REGNUM)
@@ -705,7 +699,7 @@ bfin_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
                    _("invalid register number %d"), regnum);
 
   /* Extract the CC bit from the ASTAT register.  */
-  status = regcache_raw_read (regcache, BFIN_ASTAT_REGNUM, buf);
+  status = regcache->raw_read (BFIN_ASTAT_REGNUM, buf);
   if (status == REG_VALID)
     {
       buffer[1] = buffer[2] = buffer[3] = 0;
@@ -718,7 +712,7 @@ static void
 bfin_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
                            int regnum, const gdb_byte *buffer)
 {
-  gdb_byte *buf = (gdb_byte *) alloca (MAX_REGISTER_SIZE);
+  gdb_byte buf[BFIN_MAX_REGISTER_SIZE];
 
   if (regnum != BFIN_CC_REGNUM)
     internal_error (__FILE__, __LINE__,
@@ -817,7 +811,7 @@ bfin_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
       return arches->gdbarch;
     }
 
-  tdep = XNEW (struct gdbarch_tdep);
+  tdep = XCNEW (struct gdbarch_tdep);
   gdbarch = gdbarch_alloc (&info, tdep);
 
   tdep->bfin_abi = abi;
@@ -838,12 +832,12 @@ bfin_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   set_gdbarch_return_value (gdbarch, bfin_return_value);
   set_gdbarch_skip_prologue (gdbarch, bfin_skip_prologue);
   set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
-  SET_GDBARCH_BREAKPOINT_MANIPULATION (bfin);
+  set_gdbarch_breakpoint_kind_from_pc (gdbarch, bfin_breakpoint_kind_from_pc);
+  set_gdbarch_sw_breakpoint_from_kind (gdbarch, bfin_sw_breakpoint_from_kind);
   set_gdbarch_decr_pc_after_break (gdbarch, 2);
   set_gdbarch_frame_args_skip (gdbarch, 8);
   set_gdbarch_unwind_pc (gdbarch, bfin_unwind_pc);
   set_gdbarch_frame_align (gdbarch, bfin_frame_align);
-  set_gdbarch_print_insn (gdbarch, print_insn_bfin);
 
   /* Hook in ABI-specific overrides, if they have been registered.  */
   gdbarch_init_osabi (info, gdbarch);
@@ -857,9 +851,6 @@ bfin_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   return gdbarch;
 }
 
-/* Provide a prototype to silence -Wmissing-prototypes.  */
-extern initialize_file_ftype _initialize_bfin_tdep;
-
 void
 _initialize_bfin_tdep (void)
 {