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[PATCH] Irix OSABI support
- From: Kevin Buettner <kevinb at redhat dot com>
- To: gdb-patches at sources dot redhat dot com
- Date: Fri, 26 Jul 2002 18:31:59 -0700
- Subject: [PATCH] Irix OSABI support
I've just committed the patch below. I'll commit the configury changes
separately.
* osabi.h (gdb_osabi): Add new enum constant GDB_OSABI_IRIX.
* osabi.c (gdb_osabi_names): Add corresponding string for Irix.
* mips-irix-tdep.c: New file.
Index: osabi.h
===================================================================
RCS file: /cvs/src/src/gdb/osabi.h,v
retrieving revision 1.3
diff -u -p -r1.3 osabi.h
--- osabi.h 15 Jun 2002 12:26:31 -0000 1.3
+++ osabi.h 27 Jul 2002 01:24:44 -0000
@@ -39,6 +39,7 @@ enum gdb_osabi
GDB_OSABI_WINCE,
GDB_OSABI_GO32,
GDB_OSABI_NETWARE,
+ GDB_OSABI_IRIX,
GDB_OSABI_LYNXOS,
GDB_OSABI_ARM_EABI_V1,
Index: osabi.c
===================================================================
RCS file: /cvs/src/src/gdb/osabi.c,v
retrieving revision 1.4
diff -u -p -r1.4 osabi.c
--- osabi.c 4 Jul 2002 15:36:51 -0000 1.4
+++ osabi.c 27 Jul 2002 01:24:44 -0000
@@ -42,6 +42,7 @@ static const char * const gdb_osabi_name
"Windows CE",
"DJGPP",
"NetWare",
+ "Irix",
"LynxOS",
"ARM EABI v1",
Index: mips-irix-tdep.c
===================================================================
RCS file: mips-irix-tdep.c
diff -N mips-irix-tdep.c
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ mips-irix-tdep.c 27 Jul 2002 01:24:44 -0000
@@ -0,0 +1,95 @@
+/* Target-dependent code for the MIPS architecture running on IRIX,
+ for GDB, the GNU Debugger.
+
+ Copyright 2002 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
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ 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. */
+
+#include "defs.h"
+#include "osabi.h"
+
+#include "elf-bfd.h"
+
+static void
+mips_irix_elf_osabi_sniff_abi_tag_sections (bfd *abfd, asection *sect,
+ void *obj)
+{
+ enum gdb_osabi *os_ident_ptr = obj;
+ const char *name;
+ unsigned int sectsize;
+
+ name = bfd_get_section_name (abfd, sect);
+ sectsize = bfd_section_size (abfd, sect);
+
+ if (strncmp (name, ".MIPS.", 6) == 0 && sectsize > 0)
+ {
+ /* The presence of a section named with a ".MIPS." prefix is
+ indicative of an IRIX binary. */
+ *os_ident_ptr = GDB_OSABI_IRIX;
+ }
+}
+
+static enum gdb_osabi
+mips_irix_elf_osabi_sniffer (bfd *abfd)
+{
+ unsigned int elfosabi;
+ enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;
+
+ /* If the generic sniffer gets a hit, return and let other sniffers
+ get a crack at it. */
+ bfd_map_over_sections (abfd,
+ generic_elf_osabi_sniff_abi_tag_sections,
+ &osabi);
+ if (osabi != GDB_OSABI_UNKNOWN)
+ return GDB_OSABI_UNKNOWN;
+
+ elfosabi = elf_elfheader (abfd)->e_ident[EI_OSABI];
+
+ if (elfosabi == ELFOSABI_NONE)
+ {
+ /* When elfosabi is ELFOSABI_NONE (0), then the ELF structures in the
+ file are conforming to the base specification for that machine
+ (there are no OS-specific extensions). In order to determine the
+ real OS in use we must look for OS notes that have been added.
+
+ For IRIX, we simply look for sections named with .MIPS. as
+ prefixes. */
+ bfd_map_over_sections (abfd,
+ mips_irix_elf_osabi_sniff_abi_tag_sections,
+ &osabi);
+ }
+ return osabi;
+}
+
+static void
+mips_irix_init_abi (struct gdbarch_info info,
+ struct gdbarch *gdbarch)
+{
+}
+
+void
+_initialize_mips_irix_tdep (void)
+{
+ /* Register an ELF OS ABI sniffer for IRIX binaries. */
+ gdbarch_register_osabi_sniffer (bfd_arch_mips,
+ bfd_target_elf_flavour,
+ mips_irix_elf_osabi_sniffer);
+
+ gdbarch_register_osabi (bfd_arch_mips, GDB_OSABI_IRIX,
+ mips_irix_init_abi);
+}