--- /dev/null
+/* PowerPC-specific support for 32-bit ELF
+ Copyright 1994 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Cygnus Support.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* I wrote this file without the benefit of a PowerPC ELF ABI. Thus,
+ it probably does not correspond to whatever people finally settle
+ on. Ian Taylor. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "libelf.h"
+
+static bfd_reloc_status_type powerpc_elf_toc16_reloc PARAMS ((bfd *abfd,
+ arelent *reloc,
+ asymbol *symbol,
+ PTR data,
+ asection *sec,
+ bfd *output_bfd,
+ char **error));
+static bfd_reloc_status_type powerpc_elf_b26_reloc PARAMS ((bfd *abfd,
+ arelent *reloc,
+ asymbol *symbol,
+ PTR data,
+ asection *sec,
+ bfd *output_bfd,
+ char **error));
+static const struct reloc_howto_struct *bfd_elf32_bfd_reloc_type_lookup
+ PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
+static void powerpc_info_to_howto_rel
+ PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rel *dst));
+
+#define USE_REL
+
+enum reloc_type
+{
+ R_POWERPC_NONE = 0,
+ R_POWERPC_32,
+ R_POWERPC_B26,
+ R_POWERPC_BA26,
+ R_POWERPC_TOC16,
+ R_POWERPC_max
+};
+
+static reloc_howto_type elf_powerpc_howto_table[] =
+{
+ /* This relocation does not do anything. */
+ HOWTO (R_POWERPC_NONE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_POWERPC_NONE", /* name */
+ true, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Standard 32 bit relocation. */
+ HOWTO (R_POWERPC_32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_POWERPC_32", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 26 bit relative branch. */
+ HOWTO (R_POWERPC_B26, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ powerpc_elf_b26_reloc, /* special_function */
+ "R_POWERPC_B26", /* name */
+ true, /* partial_inplace */
+ 0x3fffffc, /* src_mask */
+ 0x3fffffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 26 bit absolute branch. */
+ HOWTO (R_POWERPC_BA26, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_POWERPC_BA26", /* name */
+ true, /* partial_inplace */
+ 0x3fffffc, /* src_mask */
+ 0x3fffffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 16 bit reference to TOC section. */
+ HOWTO (R_POWERPC_TOC16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ powerpc_elf_toc16_reloc, /* special_function */
+ "R_POWERPC_TOC16", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+};
+
+/* Handle the TOC16 reloc. We want to use the offset within the .toc
+ section, not the actual VMA. */
+
+static bfd_reloc_status_type
+powerpc_elf_toc16_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ asection *sec;
+
+ /* Simply adjust the reloc addend by the negative of the VMA of the
+ .toc section. */
+ sec = bfd_get_section (*reloc_entry->sym_ptr_ptr);
+ if (sec == &bfd_und_section)
+ return bfd_reloc_continue;
+ BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".toc") == 0);
+ reloc_entry->addend -= sec->output_section->vma;
+ return bfd_reloc_continue;
+}
+
+/* Handle a branch. If the next instruction is the special
+ instruction "cror 31,31,31", and this branch is to a stub routine
+ we have created, we must change the cror instruction into an
+ instruction which reloads the TOC register. We can detect a stub
+ routine because it is in a BFD named "linker stubs". FIXME: What a
+ hack. */
+
+static bfd_reloc_status_type
+powerpc_elf_b26_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ if (bfd_get_section (symbol) != &bfd_und_section
+ && (strcmp (bfd_get_section (symbol)->owner->filename, "linker stubs")
+ == 0))
+ {
+ bfd_vma val;
+
+ /* This symbol is a stub created by the linker. */
+ val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4);
+ if (val == 0x4ffffb82) /* cror 31,31,31 */
+ bfd_put_32 (abfd, (bfd_vma) 0x80410014, /* l r2,20(r1) */
+ (bfd_byte *) data + reloc_entry->address + 4);
+ }
+
+ if (output_bfd != (bfd *) NULL
+ && bfd_get_section (symbol) == &bfd_und_section)
+ {
+ bfd_size_type address;
+
+ /* If we are generating relocateable output, and the symbol is
+ undefined, we just want to adjust the reloc by the amount the
+ section moved. */
+ address = reloc_entry->address;
+ reloc_entry->address += input_section->output_offset;
+ return _bfd_relocate_contents (reloc_entry->howto, abfd,
+ - input_section->output_offset,
+ (bfd_byte *) data + address);
+ }
+
+ /* Otherwise, let bfd_perform_relocation handle it. */
+ return bfd_reloc_continue;
+}
+
+/* Map BFD reloc types to PowerPC ELF reloc types. */
+
+struct powerpc_reloc_map
+{
+ unsigned char bfd_reloc_val;
+ unsigned char elf_reloc_val;
+};
+
+static const struct powerpc_reloc_map powerpc_reloc_map[] =
+{
+ { BFD_RELOC_NONE, R_POWERPC_NONE, },
+ { BFD_RELOC_32, R_POWERPC_32 },
+ { BFD_RELOC_CTOR, R_POWERPC_32 },
+ { BFD_RELOC_PPC_B26, R_POWERPC_B26 },
+ { BFD_RELOC_PPC_BA26, R_POWERPC_BA26 },
+ { BFD_RELOC_PPC_TOC16, R_POWERPC_TOC16 }
+};
+
+static const struct reloc_howto_struct *
+bfd_elf32_bfd_reloc_type_lookup (abfd, code)
+ bfd *abfd;
+ bfd_reloc_code_real_type code;
+{
+ int i;
+
+ for (i = 0;
+ i < sizeof (powerpc_reloc_map) / sizeof (struct powerpc_reloc_map);
+ i++)
+ {
+ if (powerpc_reloc_map[i].bfd_reloc_val == code)
+ return &elf_powerpc_howto_table[powerpc_reloc_map[i].elf_reloc_val];
+ }
+
+ return NULL;
+}
+
+/* Set the howto pointer for a PowerPC ELF reloc. */
+
+static void
+powerpc_info_to_howto_rel (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf32_Internal_Rel *dst;
+{
+ BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_POWERPC_max);
+ cache_ptr->howto = &elf_powerpc_howto_table[ELF32_R_TYPE(dst->r_info)];
+}
+
+#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
+#define TARGET_BIG_NAME "elf32-powerpc"
+#define ELF_ARCH bfd_arch_powerpc
+#define ELF_MACHINE_CODE EM_CYGNUS_POWERPC
+#define ELF_MAXPAGESIZE 0x10000
+#define elf_info_to_howto 0
+#define elf_info_to_howto_rel powerpc_info_to_howto_rel
+
+#include "elf32-target.h"
--- /dev/null
+/* Support for 32-bit PowerPC NLM (NetWare Loadable Module)
+ Copyright (C) 1994 Free Software Foundation, Inc.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+
+#define ARCH_SIZE 32
+
+#include "nlm/ppc-ext.h"
+#define Nlm_External_Fixed_Header Nlm32_powerpc_External_Fixed_Header
+
+#include "libnlm.h"
+
+static boolean nlm_powerpc_backend_object_p
+ PARAMS ((bfd *));
+static boolean nlm_powerpc_write_prefix
+ PARAMS ((bfd *));
+static boolean nlm_powerpc_read_reloc
+ PARAMS ((bfd *, nlmNAME(symbol_type) *, asection **, arelent *));
+static boolean nlm_powerpc_mangle_relocs
+ PARAMS ((bfd *, asection *, PTR, bfd_vma, bfd_size_type));
+static boolean nlm_powerpc_read_import
+ PARAMS ((bfd *, nlmNAME(symbol_type) *));
+static boolean nlm_powerpc_write_import
+ PARAMS ((bfd *, asection *, arelent *));
+static boolean nlm_powerpc_write_external
+ PARAMS ((bfd *, bfd_size_type, asymbol *, struct reloc_and_sec *));
+\f
+/* PowerPC NLM's have a prefix header before the standard NLM. This
+ function reads it in, verifies the version, and seeks the bfd to
+ the location before the regular NLM header. */
+
+static boolean
+nlm_powerpc_backend_object_p (abfd)
+ bfd *abfd;
+{
+ struct nlm32_powerpc_external_prefix_header s;
+
+ if (bfd_read ((PTR) &s, sizeof s, 1, abfd) != sizeof s)
+ return false;
+
+ if (memcmp (s.signature, NLM32_POWERPC_SIGNATURE, sizeof s.signature) != 0
+ || bfd_h_get_32 (abfd, s.headerVersion) != NLM32_POWERPC_HEADER_VERSION)
+ return false;
+
+ return true;
+}
+
+/* Write out the prefix. */
+
+static boolean
+nlm_powerpc_write_prefix (abfd)
+ bfd *abfd;
+{
+ struct nlm32_powerpc_external_prefix_header s;
+
+ memset (&s, 0, sizeof s);
+ memcpy (s.signature, NLM32_POWERPC_SIGNATURE, sizeof s.signature);
+ bfd_h_put_32 (abfd, (bfd_vma) NLM32_POWERPC_HEADER_VERSION, s.headerVersion);
+ bfd_h_put_32 (abfd, (bfd_vma) 0, s.origins);
+
+ /* FIXME: What should we do about the date? */
+
+ if (bfd_write ((PTR) &s, sizeof s, 1, abfd) != sizeof s)
+ return false;
+
+ return true;
+}
+\f
+/* How to process the various reloc types. PowerPC NLMs use XCOFF
+ reloc types, and I have just copied the XCOFF reloc table here. */
+
+static reloc_howto_type nlm_powerpc_howto_table[] =
+{
+ /* Standard 32 bit relocation. */
+ HOWTO (0, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_POS", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 32 bit relocation, but store negative value. */
+ HOWTO (1, /* type */
+ 0, /* rightshift */
+ -2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_NEG", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 32 bit PC relative relocation. */
+ HOWTO (2, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_REL", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 16 bit TOC relative relocation. */
+ HOWTO (3, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_TOC", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* I don't really know what this is. */
+ HOWTO (4, /* type */
+ 1, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_RTB", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* External TOC relative symbol. */
+ HOWTO (5, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_GL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Local TOC relative symbol. */
+ HOWTO (6, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_TCL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ { 7 },
+
+ /* Non modifiable absolute branch. */
+ HOWTO (8, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_BA", /* name */
+ true, /* partial_inplace */
+ 0x3fffffc, /* src_mask */
+ 0x3fffffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ { 9 },
+
+ /* Non modifiable relative branch. */
+ HOWTO (0xa, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_BR", /* name */
+ true, /* partial_inplace */
+ 0x3fffffc, /* src_mask */
+ 0x3fffffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ { 0xb },
+
+ /* Indirect load. */
+ HOWTO (0xc, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_RL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Load address. */
+ HOWTO (0xd, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_RLA", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ { 0xe },
+
+ /* Non-relocating reference. */
+ HOWTO (0xf, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_REF", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ { 0x10 },
+ { 0x11 },
+
+ /* TOC relative indirect load. */
+ HOWTO (0x12, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_TRL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* TOC relative load address. */
+ HOWTO (0x13, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_TRLA", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Modifiable relative branch. */
+ HOWTO (0x14, /* type */
+ 1, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_RRTBI", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Modifiable absolute branch. */
+ HOWTO (0x15, /* type */
+ 1, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_RRTBA", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Modifiable call absolute indirect. */
+ HOWTO (0x16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_CAI", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Modifiable call relative. */
+ HOWTO (0x17, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_REL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Modifiable branch absolute. */
+ HOWTO (0x18, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_RBA", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Modifiable branch absolute. */
+ HOWTO (0x19, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_RBAC", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Modifiable branch relative. */
+ HOWTO (0x1a, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_REL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Modifiable branch absolute. */
+ HOWTO (0x1b, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "R_REL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false) /* pcrel_offset */
+};
+
+#define HOWTO_COUNT (sizeof nlm_powerpc_howto_table \
+ / sizeof nlm_powerpc_howto_table[0])
+
+/* Read a PowerPC NLM reloc. */
+
+static boolean
+nlm_powerpc_read_reloc (abfd, sym, secp, rel)
+ bfd *abfd;
+ nlmNAME(symbol_type) *sym;
+ asection **secp;
+ arelent *rel;
+{
+ struct nlm32_powerpc_external_reloc ext;
+ bfd_vma l_vaddr;
+ unsigned long l_symndx;
+ int l_rtype;
+ int l_rsecnm;
+
+ /* Read the reloc from the file. */
+ if (bfd_read (&ext, sizeof ext, 1, abfd) != sizeof ext)
+ {
+ bfd_set_error (bfd_error_system_call);
+ return false;
+ }
+
+ /* Swap in the fields. */
+ l_vaddr = bfd_h_get_32 (abfd, ext.l_vaddr);
+ l_symndx = bfd_h_get_32 (abfd, ext.l_symndx);
+ l_rtype = bfd_h_get_16 (abfd, ext.l_rtype);
+ l_rsecnm = bfd_h_get_16 (abfd, ext.l_rsecnm);
+
+ /* Work out the arelent fields. */
+ if (sym != NULL)
+ {
+ /* This is an import. sym_ptr_ptr is filled in by
+ nlm_canonicalize_reloc. */
+ rel->sym_ptr_ptr = NULL;
+ }
+ else
+ {
+ asection *sec;
+
+ if (l_symndx == 0)
+ sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
+ else if (l_symndx == 1)
+ sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
+ else if (l_symndx == 2)
+ sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME);
+ else
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ rel->sym_ptr_ptr = sec->symbol_ptr_ptr;
+ }
+
+ rel->address = l_vaddr;
+ rel->addend = 0;
+
+ BFD_ASSERT ((l_rtype & 0xff) < HOWTO_COUNT);
+
+ rel->howto = nlm_powerpc_howto_table + (l_rtype & 0xff);
+
+ BFD_ASSERT (rel->howto->name != NULL
+ && ((l_rtype & 0x8000) != 0
+ ? (rel->howto->complain_on_overflow
+ == complain_overflow_signed)
+ : (rel->howto->complain_on_overflow
+ == complain_overflow_bitfield))
+ && ((l_rtype >> 8) & 0x1f) == rel->howto->bitsize - 1);
+
+ if (l_rsecnm == 0)
+ *secp = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
+ else if (l_rsecnm == 1)
+ *secp = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
+ else
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ return true;
+}
+
+/* Mangle PowerPC NLM relocs for output. */
+
+static boolean
+nlm_powerpc_mangle_relocs (abfd, sec, data, offset, count)
+ bfd *abfd;
+ asection *sec;
+ PTR data;
+ bfd_vma offset;
+ bfd_size_type count;
+{
+ return true;
+}
+
+/* Read a PowerPC NLM import record */
+
+static boolean
+nlm_powerpc_read_import (abfd, sym)
+ bfd *abfd;
+ nlmNAME(symbol_type) *sym;
+{
+ struct nlm_relent *nlm_relocs; /* relocation records for symbol */
+ bfd_size_type rcount; /* number of relocs */
+ bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* temporary 32-bit value */
+ unsigned char symlength; /* length of symbol name */
+
+ if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd)
+ != sizeof (symlength))
+ {
+ bfd_set_error (bfd_error_system_call);
+ return (false);
+ }
+ sym -> symbol.the_bfd = abfd;
+ sym -> symbol.name = bfd_alloc (abfd, symlength + 1);
+ if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd)
+ != symlength)
+ {
+ bfd_set_error (bfd_error_system_call);
+ return (false);
+ }
+ sym -> symbol.flags = 0;
+ sym -> symbol.value = 0;
+ sym -> symbol.section = &bfd_und_section;
+ if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
+ {
+ bfd_set_error (bfd_error_system_call);
+ return (false);
+ }
+ rcount = bfd_h_get_32 (abfd, temp);
+ nlm_relocs = ((struct nlm_relent *)
+ bfd_alloc (abfd, rcount * sizeof (struct nlm_relent)));
+ if (nlm_relocs == (struct nlm_relent *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ sym -> relocs = nlm_relocs;
+ sym -> rcnt = 0;
+ while (sym -> rcnt < rcount)
+ {
+ asection *section;
+
+ if (nlm_powerpc_read_reloc (abfd, sym, §ion,
+ &nlm_relocs -> reloc)
+ == false)
+ return false;
+ nlm_relocs -> section = section;
+ nlm_relocs++;
+ sym -> rcnt++;
+ }
+ return true;
+}
+
+/* Write a PowerPC NLM reloc. */
+
+static boolean
+nlm_powerpc_write_import (abfd, sec, rel)
+ bfd *abfd;
+ asection *sec;
+ arelent *rel;
+{
+ struct nlm32_powerpc_external_reloc ext;
+ asymbol *sym;
+ asection *symsec;
+ unsigned long l_symndx;
+ int l_rtype;
+ int l_rsecnm;
+ const reloc_howto_type *howto;
+
+ bfd_h_put_32 (abfd, rel->address, ext.l_vaddr);
+
+ sym = *rel->sym_ptr_ptr;
+ symsec = bfd_get_section (sym);
+ if (symsec == &bfd_und_section)
+ l_symndx = 0;
+ else if (symsec == bfd_get_section_by_name (abfd, NLM_CODE_NAME))
+ l_symndx = 0;
+ else if (symsec == bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME))
+ l_symndx = 1;
+ else if (symsec == bfd_get_section_by_name (abfd,
+ NLM_UNINITIALIZED_DATA_NAME))
+ l_symndx = 2;
+ else
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ bfd_h_put_32 (abfd, (bfd_vma) l_symndx, ext.l_symndx);
+
+ for (howto = nlm_powerpc_howto_table;
+ howto < nlm_powerpc_howto_table + HOWTO_COUNT;
+ howto++)
+ {
+ if (howto->rightshift == rel->howto->rightshift
+ && howto->size == rel->howto->size
+ && howto->bitsize == rel->howto->bitsize
+ && howto->pc_relative == rel->howto->pc_relative
+ && howto->bitpos == rel->howto->bitpos
+ && howto->partial_inplace == rel->howto->partial_inplace
+ && howto->src_mask == rel->howto->src_mask
+ && howto->dst_mask == rel->howto->dst_mask
+ && howto->pcrel_offset == rel->howto->pcrel_offset)
+ break;
+ }
+ if (howto >= nlm_powerpc_howto_table + HOWTO_COUNT)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ l_rtype = howto->type;
+ if (howto->complain_on_overflow == complain_overflow_signed)
+ l_rtype |= 0x8000;
+ l_rtype |= (howto->bitsize - 1) << 8;
+ bfd_h_put_16 (abfd, (bfd_vma) l_rtype, ext.l_rtype);
+
+ if (sec == bfd_get_section_by_name (abfd, NLM_CODE_NAME))
+ l_rsecnm = 0;
+ else if (sec == bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME))
+ l_rsecnm = 1;
+ else
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ bfd_h_put_16 (abfd, (bfd_vma) l_rsecnm, ext.l_rsecnm);
+
+ if (bfd_write (&ext, sizeof ext, 1, abfd) != sizeof ext)
+ return false;
+
+ return true;
+}
+
+/* Write a PowerPC NLM external symbol. */
+
+static boolean
+nlm_powerpc_write_external (abfd, count, sym, relocs)
+ bfd *abfd;
+ bfd_size_type count;
+ asymbol *sym;
+ struct reloc_and_sec *relocs;
+{
+ int i;
+ bfd_byte len;
+ unsigned char temp[NLM_TARGET_LONG_SIZE];
+
+ len = strlen (sym->name);
+ if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) != sizeof(bfd_byte))
+ || bfd_write (sym->name, len, 1, abfd) != len)
+ {
+ bfd_set_error (bfd_error_system_call);
+ return false;
+ }
+
+ bfd_put_32 (abfd, count, temp);
+ if (bfd_write (temp, sizeof(temp), 1, abfd) != sizeof (temp))
+ {
+ bfd_set_error (bfd_error_system_call);
+ return false;
+ }
+
+ for (i = 0; i < count; i++)
+ {
+ if (nlm_powerpc_write_import (abfd, relocs[i].sec,
+ relocs[i].rel) == false)
+ return false;
+ }
+
+ return true;
+}
+
+#include "nlmswap.h"
+
+static const struct nlm_backend_data nlm32_powerpc_backend =
+{
+ "NetWare PowerPC Module \032",
+ sizeof (Nlm32_powerpc_External_Fixed_Header),
+ sizeof (struct nlm32_powerpc_external_prefix_header),
+ bfd_arch_powerpc,
+ 0,
+ false,
+ nlm_powerpc_backend_object_p,
+ nlm_powerpc_write_prefix,
+ nlm_powerpc_read_reloc,
+ nlm_powerpc_mangle_relocs,
+ nlm_powerpc_read_import,
+ nlm_powerpc_write_import,
+ 0, /* set_public_section */
+ 0, /* get_public_offset */
+ nlm_swap_fixed_header_in,
+ nlm_swap_fixed_header_out,
+ nlm_powerpc_write_external,
+ 0, /* write_export */
+};
+
+#define TARGET_BIG_NAME "nlm32-powerpc"
+#define TARGET_BIG_SYM nlmNAME(powerpc_vec)
+#define TARGET_BACKEND_DATA &nlm32_powerpc_backend
+
+#include "nlm-target.h"
projects / binutils-gdb.git / commitdiff