X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fi386-sol2-tdep.c;h=953b942108af357ab5c0aa6ddb25b512c4b0be18;hb=0f48b757071509040d800ff9f7c8726e5828bd1a;hp=0da32d5c0e28e6375d29358882fa72bb9a3f84c2;hpb=8349554debe1e86515a9d89d02bd976357281039;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/i386-sol2-tdep.c b/gdb/i386-sol2-tdep.c
index 0da32d5c0e..953b942108 100644
--- a/gdb/i386-sol2-tdep.c
+++ b/gdb/i386-sol2-tdep.c
@@ -1,11 +1,12 @@
 /* Target-dependent code for Solaris x86.
-   Copyright 2002, 2003 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2016 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -14,15 +15,15 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
 #include "value.h"
 #include "osabi.h"
 
+#include "sol2-tdep.h"
 #include "i386-tdep.h"
+#include "solib-svr4.h"
 
 /* From <ia32/sys/reg.h>.  */
 static int i386_sol2_gregset_reg_offset[] =
@@ -45,28 +46,58 @@ static int i386_sol2_gregset_reg_offset[] =
   0 * 4				/* %gs */
 };
 
+/* Return whether THIS_FRAME corresponds to a Solaris sigtramp
+   routine.  */
+
 static int
-i386_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name)
+i386_sol2_sigtramp_p (struct frame_info *this_frame)
 {
-  /* Signal handler frames under Solaris 2 are recognized by a return
-     address of 0xffffffff.  */
-  return (pc == 0xffffffff);
+  CORE_ADDR pc = get_frame_pc (this_frame);
+  const char *name;
+
+  find_pc_partial_function (pc, &name, NULL, NULL);
+  return (name && (strcmp ("sigacthandler", name) == 0
+		   || strcmp (name, "ucbsigvechandler") == 0));
 }
 
 /* Solaris doesn't have a `struct sigcontext', but it does have a
    `mcontext_t' that contains the saved set of machine registers.  */
 
 static CORE_ADDR
-i386_sol2_mcontext_addr (struct frame_info *next_frame)
+i386_sol2_mcontext_addr (struct frame_info *this_frame)
 {
   CORE_ADDR sp, ucontext_addr;
 
-  sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM);
-  ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4);
+  sp = get_frame_register_unsigned (this_frame, I386_ESP_REGNUM);
+  ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 4);
 
   return ucontext_addr + 36;
 }
 
+/* SunPRO encodes the static variables.  This is not related to C++
+   mangling, it is done for C too.  */
+
+static const char *
+i386_sol2_static_transform_name (const char *name)
+{
+  if (name[0] == '.')
+    {
+      const char *p;
+
+      /* For file-local statics there will be a period, a bunch of
+         junk (the contents of which match a string given in the
+         N_OPT), a period and the name.  For function-local statics
+         there will be a bunch of junk (which seems to change the
+         second character from 'A' to 'B'), a period, the name of the
+         function, and the name.  So just skip everything before the
+         last period.  */
+      p = strrchr (name, '.');
+      if (p != NULL)
+        name = p + 1;
+    }
+  return name;
+}
+
 /* Solaris 2.  */
 
 static void
@@ -77,6 +108,13 @@ i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* Solaris is SVR4-based.  */
   i386_svr4_init_abi (info, gdbarch);
 
+  /* The SunPRO compiler puts out 0 instead of the address in N_SO symbols,
+     and for SunPRO 3.0, N_FUN symbols too.  */
+  set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
+
+  /* Handle SunPRO encoding of static symbols.  */
+  set_gdbarch_static_transform_name (gdbarch, i386_sol2_static_transform_name);
+
   /* Solaris reserves space for its FPU emulator in `fpregset_t'.
      There is also some space reserved for the registers of a Weitek
      math coprocessor.  */
@@ -85,12 +123,19 @@ i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->sizeof_gregset = 19 * 4;
   tdep->sizeof_fpregset = 380;
 
+  /* Signal trampolines are slightly different from SVR4.  */
+  tdep->sigtramp_p = i386_sol2_sigtramp_p;
   tdep->sigcontext_addr = i386_sol2_mcontext_addr;
   tdep->sc_reg_offset = tdep->gregset_reg_offset;
   tdep->sc_num_regs = tdep->gregset_num_regs;
 
-  /* Signal trampolines are slightly different from SVR4.  */
-  set_gdbarch_pc_in_sigtramp (gdbarch, i386_sol2_pc_in_sigtramp);
+  /* Solaris has SVR4-style shared libraries.  */
+  set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
+  set_solib_svr4_fetch_link_map_offsets
+    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
+
+  /* How to print LWP PTIDs from core files.  */
+  set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
 }