gdb: fix python/lib/gdb/__init__.py formatting

[deliverable/binutils-gdb.git] / gdb / i386-sol2-tdep.c

diff --git a/gdb/i386-sol2-tdep.c b/gdb/i386-sol2-tdep.c
index 78487af4658e9c95551860ee50d904e27d430059..acc85eead5b57ea6669b2dbd24d0b89dc307adc9 100644 (file)
--- 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) 2002-2021 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,
@@ -14,22 +15,49 @@
    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"
 
-static int
-i386_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name)
+/* From <ia32/sys/reg.h>.  */
+static int i386_sol2_gregset_reg_offset[] =
+{
+  11 * 4,                      /* %eax */
+  10 * 4,                      /* %ecx */
+  9 * 4,                       /* %edx */
+  8 * 4,                       /* %ebx */
+  17 * 4,                      /* %esp */
+  6 * 4,                       /* %ebp */
+  5 * 4,                       /* %esi */
+  4 * 4,                       /* %edi */
+  14 * 4,                      /* %eip */
+  16 * 4,                      /* %eflags */
+  15 * 4,                      /* %cs */
+  18 * 4,                      /* %ss */
+  3 * 4,                       /* %ds */
+  2 * 4,                       /* %es */
+  1 * 4,                       /* %fs */
+  0 * 4                                /* %gs */
+};
+
+/* 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 *this_frame)
 {
-  /* Signal handler frames under Solaris 2 are recognized by a return
-     address of 0xffffffff.  */
-  return (pc == 0xffffffff);
+  CORE_ADDR sp, ucontext_addr;
+
+  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;
 }
 
 /* Solaris 2.  */
@@ -42,8 +70,25 @@ i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   /* Solaris is SVR4-based.  */
   i386_svr4_init_abi (info, gdbarch);
 
+  sol2_init_abi (info, gdbarch);
+
+  /* Solaris reserves space for its FPU emulator in `fpregset_t'.
+     There is also some space reserved for the registers of a Weitek
+     math coprocessor.  */
+  tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset;
+  tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
+  tdep->sizeof_gregset = 19 * 4;
+  tdep->sizeof_fpregset = 380;
+
   /* Signal trampolines are slightly different from SVR4.  */
-  set_gdbarch_pc_in_sigtramp (gdbarch, i386_sol2_pc_in_sigtramp);
+  tdep->sigtramp_p = 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;
+
+  /* Solaris has SVR4-style shared libraries.  */
+  set_solib_svr4_fetch_link_map_offsets
+    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
 }
 \f
 
@@ -58,11 +103,9 @@ i386_sol2_osabi_sniffer (bfd *abfd)
   return GDB_OSABI_UNKNOWN;
 }
 
-/* Provide a prototype to silence -Wmissing-prototypes.  */
-void _initialize_i386_sol2_tdep (void);
-
+void _initialize_i386_sol2_tdep ();
 void
-_initialize_i386_sol2_tdep (void)
+_initialize_i386_sol2_tdep ()
 {
   /* Register an ELF OS ABI sniffer for Solaris 2 binaries.  */
   gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,