gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / hppa-linux-tdep.c

diff --git a/gdb/hppa-linux-tdep.c b/gdb/hppa-linux-tdep.c
index 55fcd23f4b7ab5a52e5f99666ed70f3a0f7eba0f..6a38d7200bec2b55388fc1a15b2f34d471f55f09 100644 (file)
--- a/gdb/hppa-linux-tdep.c
+++ b/gdb/hppa-linux-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for GNU/Linux running on PA-RISC, for GDB.
 
-   Copyright (C) 2004-2015 Free Software Foundation, Inc.
+   Copyright (C) 2004-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -26,7 +26,7 @@
 #include "glibc-tdep.h"
 #include "frame-unwind.h"
 #include "trad-frame.h"
-#include "dwarf2-frame.h"
+#include "dwarf2/frame.h"
 #include "value.h"
 #include "regset.h"
 #include "regcache.h"
@@ -39,14 +39,13 @@ static int
 hppa_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
 {
   /* The general registers and the sar are the same in both sets.  */
-  if (reg <= 32)
+  if (reg >= 0 && reg <= 32)
     return reg;
 
   /* fr4-fr31 (left and right halves) are mapped from 72.  */
   if (reg >= 72 && reg <= 72 + 28 * 2)
     return HPPA_FP4_REGNUM + (reg - 72);
 
-  warning (_("Unmapped DWARF DBX Register #%d encountered."), reg);
   return -1;
 }
 
@@ -136,7 +135,7 @@ hppa_linux_sigtramp_find_sigcontext (struct gdbarch *gdbarch, CORE_ADDR pc)
 {
   unsigned int dummy[HPPA_MAX_INSN_PATTERN_LEN];
   int offs = 0;
-  int try;
+  int attempt;
   /* offsets to try to find the trampoline */
   static int pcoffs[] = { 0, 4*4, 5*4 };
   /* offsets to the rt_sigframe structure */
@@ -154,12 +153,12 @@ hppa_linux_sigtramp_find_sigcontext (struct gdbarch *gdbarch, CORE_ADDR pc)
      e4008200 be,l 0x100(%sr2, %r0), %sr0, %r31
      08000240 nop  */
 
-  for (try = 0; try < ARRAY_SIZE (pcoffs); try++)
+  for (attempt = 0; attempt < ARRAY_SIZE (pcoffs); attempt++)
     {
-      if (insns_match_pattern (gdbarch, sp + pcoffs[try],
+      if (insns_match_pattern (gdbarch, sp + pcoffs[attempt],
                               hppa_sigtramp, dummy))
        {
-          offs = sfoffs[try];
+          offs = sfoffs[attempt];
          break;
        }
     }
@@ -171,8 +170,8 @@ hppa_linux_sigtramp_find_sigcontext (struct gdbarch *gdbarch, CORE_ADDR pc)
          /* sigaltstack case: we have no way of knowing which offset to 
             use in this case; default to new kernel handling.  If this is
             wrong the unwinding will fail.  */
-         try = 2;
-         sp = pc - pcoffs[try];
+         attempt = 2;
+         sp = pc - pcoffs[attempt];
        }
       else
       {
@@ -186,7 +185,7 @@ hppa_linux_sigtramp_find_sigcontext (struct gdbarch *gdbarch, CORE_ADDR pc)
      bad we cannot include system specific headers :-(.
      sizeof(struct siginfo) == 128
      offsetof(struct ucontext, uc_mcontext) == 24.  */
-  return sp + sfoffs[try] + 128 + 24;
+  return sp + sfoffs[attempt] + 128 + 24;
 }
 
 struct hppa_linux_sigtramp_unwind_cache
@@ -205,7 +204,7 @@ hppa_linux_sigtramp_frame_unwind_cache (struct frame_info *this_frame,
   int i;
 
   if (*this_cache)
-    return *this_cache;
+    return (struct hppa_linux_sigtramp_unwind_cache *) *this_cache;
 
   info = FRAME_OBSTACK_ZALLOC (struct hppa_linux_sigtramp_unwind_cache);
   *this_cache = info;
@@ -480,14 +479,10 @@ hppa_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
-  cb (".reg", 80 * tdep->bytes_per_address, &hppa_linux_regset,
-      NULL, cb_data);
-  cb (".reg2", 64 * 4, &hppa_linux_fpregset, NULL, cb_data);
+  cb (".reg", 80 * tdep->bytes_per_address, 80 * tdep->bytes_per_address,
+      &hppa_linux_regset, NULL, cb_data);
+  cb (".reg2", 64 * 4, 64 * 4, &hppa_linux_fpregset, NULL, cb_data);
 }
-\f
-
-/* Forward declarations.  */
-extern initialize_file_ftype _initialize_hppa_linux_tdep;
 
 static void
 hppa_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
@@ -519,6 +514,7 @@ hppa_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
      some discussions to support 128-bit long double, but it requires some
      more work in gcc and glibc first.  */
   set_gdbarch_long_double_bit (gdbarch, 64);
+  set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
 
   set_gdbarch_iterate_over_regset_sections
     (gdbarch, hppa_linux_iterate_over_regset_sections);
@@ -530,8 +526,9 @@ hppa_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
                                              svr4_fetch_objfile_link_map);
 }
 
+void _initialize_hppa_linux_tdep ();
 void
-_initialize_hppa_linux_tdep (void)
+_initialize_hppa_linux_tdep ()
 {
   gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_LINUX,
                          hppa_linux_init_abi);