494 lines
15 KiB
Diff
494 lines
15 KiB
Diff
From: Kurt Roeckx <kurt@roeckx.be>
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From: Thorsten Glaser <tg@mirbsd.de>
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Subject: m68k support
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Written by Kurt Roeckx, except for the retval support which was written
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by Thorsten Glaser
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Index: elfutils-0.158/backends/m68k_init.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ elfutils-0.158/backends/m68k_init.c 2014-04-21 11:14:23.813175704 +0000
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@@ -0,0 +1,50 @@
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+/* Initialization of m68k specific backend library.
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+ Copyright (C) 2007 Kurt Roeckx <kurt@roeckx.be>
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+
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+ This software is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by the
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+ Free Software Foundation; version 2 of the License.
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+
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+ This softare is distributed in the hope that it will be useful, but
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+ WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License along
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+ with this software; if not, write to the Free Software Foundation,
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+ Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
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+
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+*/
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+
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+#ifdef HAVE_CONFIG_H
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+# include <config.h>
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+#endif
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+
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+#define BACKEND m68k_
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+#define RELOC_PREFIX R_68K_
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+#include "libebl_CPU.h"
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+
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+/* This defines the common reloc hooks based on m68k_reloc.def. */
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+#include "common-reloc.c"
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+
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+
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+const char *
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+m68k_init (elf, machine, eh, ehlen)
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+ Elf *elf __attribute__ ((unused));
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+ GElf_Half machine __attribute__ ((unused));
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+ Ebl *eh;
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+ size_t ehlen;
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+{
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+ /* Check whether the Elf_BH object has a sufficent size. */
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+ if (ehlen < sizeof (Ebl))
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+ return NULL;
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+
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+ /* We handle it. */
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+ eh->name = "m68k";
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+ m68k_init_reloc (eh);
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+ HOOK (eh, reloc_simple_type);
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+ HOOK (eh, return_value_location);
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+ HOOK (eh, register_info);
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+
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+ return MODVERSION;
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+}
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Index: elfutils-0.158/backends/m68k_regs.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ elfutils-0.158/backends/m68k_regs.c 2014-04-21 11:14:23.813175704 +0000
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@@ -0,0 +1,106 @@
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+/* Register names and numbers for m68k DWARF.
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+ Copyright (C) 2007 Kurt Roeckx <kurt@roeckx.be>
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+
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+ This software is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by the
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+ Free Software Foundation; version 2 of the License.
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+
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+ This software is distributed in the hope that it will be useful, but
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+ WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License along
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+ with this software; if not, write to the Free Software Foundation,
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+ Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
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+
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+ */
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+
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+#ifdef HAVE_CONFIG_H
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+# include <config.h>
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+#endif
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+
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+#include <string.h>
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+#include <dwarf.h>
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+
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+#define BACKEND m68k_
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+#include "libebl_CPU.h"
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+
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+ssize_t
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+m68k_register_info (Ebl *ebl __attribute__ ((unused)),
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+ int regno, char *name, size_t namelen,
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+ const char **prefix, const char **setname,
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+ int *bits, int *type)
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+{
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+ if (name == NULL)
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+ return 25;
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+
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+ if (regno < 0 || regno > 24 || namelen < 5)
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+ return -1;
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+
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+ *prefix = "%";
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+ *bits = 32;
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+ *type = (regno < 8 ? DW_ATE_signed
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+ : regno < 16 ? DW_ATE_address : DW_ATE_float);
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+
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+ if (regno < 8)
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+ {
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+ *setname = "integer";
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+ }
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+ else if (regno < 16)
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+ {
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+ *setname = "address";
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+ }
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+ else if (regno < 24)
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+ {
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+ *setname = "FPU";
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+ }
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+ else
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+ {
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+ *setname = "address";
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+ *type = DW_ATE_address;
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+ }
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+
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+ switch (regno)
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+ {
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+ case 0 ... 7:
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+ name[0] = 'd';
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+ name[1] = regno + '0';
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+ namelen = 2;
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+ break;
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+
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+ case 8 ... 13:
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+ name[0] = 'a';
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+ name[1] = regno - 8 + '0';
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+ namelen = 2;
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+ break;
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+
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+ case 14:
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+ name[0] = 'f';
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+ name[1] = 'p';
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+ namelen = 2;
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+ break;
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+
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+ case 15:
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+ name[0] = 's';
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+ name[1] = 'p';
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+ namelen = 2;
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+ break;
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+
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+ case 16 ... 23:
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+ name[0] = 'f';
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+ name[1] = 'p';
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+ name[2] = regno - 16 + '0';
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+ namelen = 3;
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+ break;
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+
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+ case 24:
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+ name[0] = 'p';
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+ name[1] = 'c';
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+ namelen = 2;
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+ }
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+
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+ name[namelen++] = '\0';
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+ return namelen;
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+}
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+
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Index: elfutils-0.158/backends/m68k_reloc.def
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ elfutils-0.158/backends/m68k_reloc.def 2014-04-21 11:14:23.813175704 +0000
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@@ -0,0 +1,45 @@
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+/* List the relocation types for m68k. -*- C -*-
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+ Copyright (C) 2007 Kurt Roeckx <kurt@roeckx.be>
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+
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+ This software is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by the
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+ Free Software Foundation; version 2 of the License.
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+
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+ This software is distributed in the hope that it will be useful, but
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+ WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License along
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+ with this software; if not, write to the Free Software Foundation,
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+ Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
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+*/
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+
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+/* NAME, REL|EXEC|DYN */
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+
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+RELOC_TYPE (NONE, 0)
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+RELOC_TYPE (32, REL|EXEC|DYN)
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+RELOC_TYPE (16, REL)
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+RELOC_TYPE (8, REL)
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+RELOC_TYPE (PC32, REL|EXEC|DYN)
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+RELOC_TYPE (PC16, REL)
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+RELOC_TYPE (PC8, REL)
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+RELOC_TYPE (GOT32, REL)
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+RELOC_TYPE (GOT16, REL)
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+RELOC_TYPE (GOT8, REL)
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+RELOC_TYPE (GOT32O, REL)
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+RELOC_TYPE (GOT16O, REL)
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+RELOC_TYPE (GOT8O, REL)
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+RELOC_TYPE (PLT32, REL)
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+RELOC_TYPE (PLT16, REL)
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+RELOC_TYPE (PLT8, REL)
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+RELOC_TYPE (PLT32O, REL)
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+RELOC_TYPE (PLT16O, REL)
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+RELOC_TYPE (PLT8O, REL)
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+RELOC_TYPE (COPY, EXEC)
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+RELOC_TYPE (GLOB_DAT, EXEC|DYN)
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+RELOC_TYPE (JMP_SLOT, EXEC|DYN)
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+RELOC_TYPE (RELATIVE, EXEC|DYN)
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+RELOC_TYPE (GNU_VTINHERIT, REL)
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+RELOC_TYPE (GNU_VTENTRY, REL)
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+
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Index: elfutils-0.158/libelf/elf.h
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===================================================================
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--- elfutils-0.158.orig/libelf/elf.h 2014-04-21 11:14:23.813175704 +0000
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+++ elfutils-0.158/libelf/elf.h 2014-04-21 11:14:23.813175704 +0000
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@@ -1157,6 +1157,9 @@
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#define R_68K_GLOB_DAT 20 /* Create GOT entry */
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#define R_68K_JMP_SLOT 21 /* Create PLT entry */
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#define R_68K_RELATIVE 22 /* Adjust by program base */
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+/* The next 2 are GNU extensions to enable C++ vtable garbage collection. */
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+#define R_68K_GNU_VTINHERIT 23
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+#define R_68K_GNU_VTENTRY 24
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#define R_68K_TLS_GD32 25 /* 32 bit GOT offset for GD */
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#define R_68K_TLS_GD16 26 /* 16 bit GOT offset for GD */
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#define R_68K_TLS_GD8 27 /* 8 bit GOT offset for GD */
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Index: elfutils-0.158/backends/Makefile.am
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===================================================================
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--- elfutils-0.158.orig/backends/Makefile.am 2014-04-21 11:14:23.813175704 +0000
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+++ elfutils-0.158/backends/Makefile.am 2014-04-21 11:14:48.344621167 +0000
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@@ -33,12 +33,12 @@
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modules = i386 sh x86_64 ia64 alpha arm aarch64 sparc ppc ppc64 s390 \
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- tilegx parisc mips
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+ tilegx parisc mips m68k
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libebl_pic = libebl_i386_pic.a libebl_sh_pic.a libebl_x86_64_pic.a \
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libebl_ia64_pic.a libebl_alpha_pic.a libebl_arm_pic.a \
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libebl_aarch64_pic.a libebl_sparc_pic.a libebl_ppc_pic.a \
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libebl_ppc64_pic.a libebl_s390_pic.a libebl_tilegx_pic.a \
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- libebl_parisc_pic.a libebl_mips_pic.a
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+ libebl_parisc_pic.a libebl_mips_pic.a libebl_m68k_pic.a
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noinst_LIBRARIES = $(libebl_pic)
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noinst_DATA = $(libebl_pic:_pic.a=.so)
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@@ -125,6 +125,10 @@
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libebl_mips_pic_a_SOURCES = $(mips_SRCS)
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am_libebl_mips_pic_a_OBJECTS = $(mips_SRCS:.c=.os)
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+m68k_SRCS = m68k_init.c m68k_symbol.c m68k_regs.c m68k_retval.c
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+libebl_m68k_pic_a_SOURCES = $(m68k_SRCS)
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+am_libebl_m68k_pic_a_OBJECTS = $(m68k_SRCS:.c=.os)
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+
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libebl_%.so libebl_%.map: libebl_%_pic.a $(libelf) $(libdw)
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@rm -f $(@:.so=.map)
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echo 'ELFUTILS_$(PACKAGE_VERSION) { global: $*_init; local: *; };' \
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Index: elfutils-0.158/backends/m68k_symbol.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ elfutils-0.158/backends/m68k_symbol.c 2014-04-21 11:14:23.813175704 +0000
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@@ -0,0 +1,43 @@
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+/* m68k specific symbolic name handling.
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+ Copyright (C) 2007 Kurt Roeckx <kurt@roeckx.be>
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+
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+ This software is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by the
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+ Free Software Foundation; version 2 of the License.
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+
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+ This software distributed in the hope that it will be useful, but
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+ WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License along
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+ with this software; if not, write to the Free Software Foundation,
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+ Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
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+*/
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+
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+#ifdef HAVE_CONFIG_H
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+# include <config.h>
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+#endif
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+
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+#include <elf.h>
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+#include <stddef.h>
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+
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+#define BACKEND m68k_
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+#include "libebl_CPU.h"
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+
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+/* Check for the simple reloc types. */
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+Elf_Type
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+m68k_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type)
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+{
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+ switch (type)
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+ {
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+ case R_68K_32:
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+ return ELF_T_SWORD;
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+ case R_68K_16:
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+ return ELF_T_HALF;
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+ case R_68K_8:
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+ return ELF_T_BYTE;
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+ default:
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+ return ELF_T_NUM;
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+ }
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+}
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Index: elfutils-0.158/backends/m68k_retval.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ elfutils-0.158/backends/m68k_retval.c 2014-04-21 11:14:23.813175704 +0000
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@@ -0,0 +1,172 @@
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+/* Function return value location for Linux/m68k ABI.
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+ Copyright (C) 2005-2010 Red Hat, Inc.
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+ Copyright (c) 2011 Thorsten Glaser, Debian.
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+ This file is part of Red Hat elfutils.
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+
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+ Red Hat elfutils is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by the
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+ Free Software Foundation; version 2 of the License.
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+
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+ Red Hat elfutils is distributed in the hope that it will be useful, but
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+ WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License along
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+ with Red Hat elfutils; if not, write to the Free Software Foundation,
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+ Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
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+
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+ Red Hat elfutils is an included package of the Open Invention Network.
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+ An included package of the Open Invention Network is a package for which
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+ Open Invention Network licensees cross-license their patents. No patent
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+ license is granted, either expressly or impliedly, by designation as an
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+ included package. Should you wish to participate in the Open Invention
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+ Network licensing program, please visit www.openinventionnetwork.com
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+ <http://www.openinventionnetwork.com>. */
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+
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+#ifdef HAVE_CONFIG_H
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+# include <config.h>
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+#endif
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+
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+#include <assert.h>
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+#include <dwarf.h>
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+
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+#define BACKEND m68k_
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+#include "libebl_CPU.h"
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+
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+
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+/* %d0, or pair %d0, %d1, or %a0 */
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+static const Dwarf_Op loc_intreg[] =
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+ {
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+ { .atom = DW_OP_reg0 }, { .atom = DW_OP_piece, .number = 4 },
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+ { .atom = DW_OP_reg1 }, { .atom = DW_OP_piece, .number = 4 },
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+ };
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+static const Dwarf_Op loc_ptrreg[] =
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+ {
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+ { .atom = DW_OP_reg8 },
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+ };
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+#define nloc_intreg 1
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+#define nloc_intregpair 4
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+#define nloc_ptrreg 1
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+
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+/* %f0 */
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+static const Dwarf_Op loc_fpreg[] =
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+ {
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+ { .atom = DW_OP_reg16 }
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+ };
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+#define nloc_fpreg 1
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+
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+/* Structures are a bit more complicated - small structures are returned
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+ in %d0 / %d1 (-freg-struct-return which is enabled by default), large
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+ structures use %a1 (in constrast to the SYSV psABI which says %a0) as
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+ reentrant storage space indicator. */
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+static const Dwarf_Op loc_aggregate[] =
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+ {
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+ { .atom = DW_OP_breg9, .number = 0 }
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+ };
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+#define nloc_aggregate 1
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+
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+int
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+m68k_return_value_location (Dwarf_Die *functypedie, const Dwarf_Op **locp)
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+{
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+ Dwarf_Word size;
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+
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+ /* Start with the function's type, and get the DW_AT_type attribute,
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+ which is the type of the return value. */
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+
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+ Dwarf_Attribute attr_mem;
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+ Dwarf_Attribute *attr = dwarf_attr_integrate (functypedie, DW_AT_type,
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+ &attr_mem);
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+ if (attr == NULL)
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+ /* The function has no return value, like a `void' function in C. */
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+ return 0;
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+
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+ Dwarf_Die die_mem;
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+ Dwarf_Die *typedie = dwarf_formref_die (attr, &die_mem);
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+ int tag = dwarf_tag (typedie);
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+
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+ /* Follow typedefs and qualifiers to get to the actual type. */
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+ while (tag == DW_TAG_typedef
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+ || tag == DW_TAG_const_type || tag == DW_TAG_volatile_type
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+ || tag == DW_TAG_restrict_type)
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+ {
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+ attr = dwarf_attr_integrate (typedie, DW_AT_type, &attr_mem);
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+ typedie = dwarf_formref_die (attr, &die_mem);
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+ tag = dwarf_tag (typedie);
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+ }
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+
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+ switch (tag)
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+ {
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+ case -1:
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+ return -1;
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+
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+ case DW_TAG_subrange_type:
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+ if (! dwarf_hasattr_integrate (typedie, DW_AT_byte_size))
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+ {
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+ attr = dwarf_attr_integrate (typedie, DW_AT_type, &attr_mem);
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+ typedie = dwarf_formref_die (attr, &die_mem);
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+ tag = dwarf_tag (typedie);
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+ }
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+ /* Fall through. */
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+
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+ case DW_TAG_base_type:
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+ case DW_TAG_enumeration_type:
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+ case DW_TAG_pointer_type:
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+ case DW_TAG_ptr_to_member_type:
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+ if (dwarf_formudata (dwarf_attr_integrate (typedie, DW_AT_byte_size,
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+ &attr_mem), &size) != 0)
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+ {
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+ if (tag == DW_TAG_pointer_type || tag == DW_TAG_ptr_to_member_type)
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+ size = 4;
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+ else
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+ return -1;
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+ }
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+ if (tag == DW_TAG_pointer_type || tag == DW_TAG_ptr_to_member_type)
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+ {
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+ *locp = loc_ptrreg;
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+ return nloc_ptrreg;
|
|
+ }
|
|
+ if (tag == DW_TAG_base_type)
|
|
+ {
|
|
+ Dwarf_Word encoding;
|
|
+ if (dwarf_formudata (dwarf_attr_integrate (typedie, DW_AT_encoding,
|
|
+ &attr_mem),
|
|
+ &encoding) != 0)
|
|
+ return -1;
|
|
+ if (encoding == DW_ATE_float)
|
|
+ {
|
|
+ /* XXX really 10? */
|
|
+ if (size > 10)
|
|
+ return -2;
|
|
+ *locp = loc_fpreg;
|
|
+ return nloc_fpreg;
|
|
+ }
|
|
+ }
|
|
+ if (size <= 8)
|
|
+ {
|
|
+ intreg:
|
|
+ /* XXX check endianness of dword pair, int64 vs aggregate */
|
|
+ *locp = loc_intreg;
|
|
+ return size <= 4 ? nloc_intreg : nloc_intregpair;
|
|
+ }
|
|
+
|
|
+ aggregate:
|
|
+ *locp = loc_aggregate;
|
|
+ return nloc_aggregate;
|
|
+
|
|
+ case DW_TAG_structure_type:
|
|
+ case DW_TAG_class_type:
|
|
+ case DW_TAG_union_type:
|
|
+ case DW_TAG_array_type:
|
|
+ if (dwarf_aggregate_size (typedie, &size) == 0
|
|
+ && size > 0 && size <= 8)
|
|
+ /* not accurate for a struct whose only member is a float */
|
|
+ goto intreg;
|
|
+ goto aggregate;
|
|
+ }
|
|
+
|
|
+ /* XXX We don't have a good way to return specific errors from ebl calls.
|
|
+ This value means we do not understand the type, but it is well-formed
|
|
+ DWARF and might be valid. */
|
|
+ return -2;
|
|
+}
|