/* Support for 32-bit i386 NLM (NetWare Loadable Module)
- Copyright (C) 1993 Free Software Foundation, Inc.
+ Copyright (C) 1993-2018 Free Software Foundation, Inc.
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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 3 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.
+ 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. */
+ 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., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
#define ARCH_SIZE 32
-#include "libnlm.h"
-static boolean nlm_i386_read_reloc
- PARAMS ((bfd *, nlmNAME(symbol_type) *, asection **, arelent *));
-static boolean nlm_i386_write_reloc
- PARAMS ((bfd *, asection *, arelent *));
-static boolean nlm_i386_mangle_relocs
- PARAMS ((bfd *, asection *, PTR, bfd_vma, bfd_size_type));
+#include "nlm/i386-ext.h"
+#define Nlm_External_Fixed_Header Nlm32_i386_External_Fixed_Header
+
+#include "libnlm.h"
/* Adjust the reloc location by an absolute value. */
static reloc_howto_type nlm_i386_abs_howto =
- 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 */
- "32", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false); /* pcrel_offset */
+ 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. */
+ "32", /* Name. */
+ TRUE, /* Partial_inplace. */
+ 0xffffffff, /* Source mask. */
+ 0xffffffff, /* Dest mask. */
+ FALSE); /* PR rel_offset. */
/* Adjust the reloc location by a PC relative displacement. */
static reloc_howto_type nlm_i386_pcrel_howto =
- HOWTO (1, /* 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 */
- "DISP32", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- true); /* pcrel_offset */
+ HOWTO (1, /* 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. */
+ "DISP32", /* Name. */
+ TRUE, /* Partial_inplace. */
+ 0xffffffff, /* Source mask. */
+ 0xffffffff, /* Dest mask. */
+ TRUE); /* PR rel_offset. */
/* Read a NetWare i386 reloc. */
-static boolean
-nlm_i386_read_reloc (abfd, sym, secp, rel)
- bfd *abfd;
- nlmNAME(symbol_type) *sym;
- asection **secp;
- arelent *rel;
+static bfd_boolean
+nlm_i386_read_reloc (bfd *abfd,
+ nlmNAME (symbol_type) *sym,
+ asection **secp,
+ arelent *rel)
{
bfd_byte temp[4];
bfd_vma val;
const char *name;
- if (bfd_read (temp, sizeof (temp), 1, abfd) != sizeof (temp))
- {
- bfd_error = system_call_error;
- return false;
- }
+ if (bfd_bread (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp))
+ return FALSE;
val = bfd_get_32 (abfd, temp);
rel->address = val;
rel->addend = 0;
- return true;
+ return TRUE;
}
/* Write a NetWare i386 reloc. */
-static boolean
-nlm_i386_write_reloc (abfd, sec, rel)
- bfd *abfd;
- asection *sec;
- arelent *rel;
+static bfd_boolean
+nlm_i386_write_import (bfd * abfd, asection * sec, arelent * rel)
{
asymbol *sym;
bfd_vma val;
|| rel->howto->size != 2
|| rel->howto->bitsize != 32
|| rel->howto->bitpos != 0
- || ! rel->howto->partial_inplace
|| rel->howto->src_mask != 0xffffffff
|| rel->howto->dst_mask != 0xffffffff)
{
- bfd_error = invalid_operation;
- return false;
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
}
sym = *rel->sym_ptr_ptr;
else
val -= nlm_get_data_low (abfd);
- if (bfd_get_section (sym) != &bfd_und_section)
+ if (! bfd_is_und_section (bfd_get_section (sym)))
{
/* NetWare only supports absolute internal relocs. */
if (rel->howto->pc_relative)
{
- bfd_error = invalid_operation;
- return false;
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
}
/* The high bit is 1 if the reloc is against the code section, 0
/* PC relative relocs on NetWare must be pcrel_offset. */
if (! rel->howto->pcrel_offset)
{
- bfd_error = invalid_operation;
- return false;
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
}
}
}
-
+
bfd_put_32 (abfd, val, temp);
- if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
- {
- bfd_error = system_call_error;
- return false;
- }
+ if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp))
+ return FALSE;
- return true;
+ return TRUE;
}
-/* I want to be able to use objcopy to turn a i386 a.out or COFF file
+/* I want to be able to use objcopy to turn an i386 a.out or COFF file
into a NetWare i386 module. That means that the relocs from the
source file have to be mapped into relocs that apply to the target
file. This function is called by nlm_set_section_contents to give
This is actually a fairly general concept. However, this is not a
general implementation. */
-static boolean
-nlm_i386_mangle_relocs (abfd, sec, data, offset, count)
- bfd *abfd;
- asection *sec;
- PTR data;
- bfd_vma offset;
- bfd_size_type count;
+static bfd_boolean
+nlm_i386_mangle_relocs (bfd *abfd,
+ asection *sec,
+ const void * data,
+ bfd_vma offset,
+ bfd_size_type count)
{
arelent **rel_ptr_ptr, **rel_end;
sym = *rel->sym_ptr_ptr;
/* Note that no serious harm will ensue if we fail to change a
- reloc. We will wind up failing in nlm_i386_write_reloc. */
+ reloc. We will wind up failing in nlm_i386_write_import. */
/* Make sure this reloc is within the data we have. We only 4
byte relocs here, so we insist on having 4 bytes. */
that at this point the size of the data section is in the NLM
header. */
if (((bfd_get_section_flags (abfd, bfd_get_section (sym))
- & (SEC_CODE | SEC_DATA)) == 0)
+ & SEC_LOAD) == 0)
&& ((bfd_get_section_flags (abfd, bfd_get_section (sym))
& SEC_ALLOC) != 0))
addend += nlm_fixed_header (abfd)->dataImageSize;
&& rel->howto->size == 2
&& rel->howto->bitsize == 32
&& rel->howto->bitpos == 0
- && rel->howto->partial_inplace
&& rel->howto->src_mask == 0xffffffff
&& rel->howto->dst_mask == 0xffffffff)
{
bfd_vma val;
- val = bfd_get_32 (abfd, (char *) data + rel->address - offset);
+ val = bfd_get_32 (abfd, (bfd_byte *) data + rel->address - offset);
val += addend;
- bfd_put_32 (abfd, val, (char *) data + rel->address - offset);
+ bfd_put_32 (abfd, val, (bfd_byte *) data + rel->address - offset);
rel->addend = 0;
}
&& rel->howto->size == 2
&& rel->howto->bitsize == 32
&& rel->howto->bitpos == 0
- && rel->howto->partial_inplace
&& rel->howto->src_mask == 0xffffffff
&& rel->howto->dst_mask == 0xffffffff)
{
/* When pcrel_offset is not set, it means that the negative
of the address of the memory location is stored in the
memory location. We must add it back in. */
- val = bfd_get_32 (abfd, (char *) data + rel->address - offset);
+ val = bfd_get_32 (abfd, (bfd_byte *) data + rel->address - offset);
val += rel->address;
- bfd_put_32 (abfd, val, (char *) data + rel->address - offset);
+ bfd_put_32 (abfd, val, (bfd_byte *) data + rel->address - offset);
rel->howto = &nlm_i386_pcrel_howto;
}
}
- return true;
+ return TRUE;
+}
+
+/* Read a NetWare i386 import record. */
+
+static bfd_boolean
+nlm_i386_read_import (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. */
+ char *name;
+
+ if (bfd_bread (& symlength, (bfd_size_type) sizeof (symlength), abfd)
+ != sizeof (symlength))
+ return FALSE;
+ sym -> symbol.the_bfd = abfd;
+ name = bfd_alloc (abfd, (bfd_size_type) symlength + 1);
+ if (name == NULL)
+ return FALSE;
+ if (bfd_bread (name, (bfd_size_type) symlength, abfd) != symlength)
+ return FALSE;
+ name[symlength] = '\0';
+ sym -> symbol.name = name;
+ sym -> symbol.flags = 0;
+ sym -> symbol.value = 0;
+ sym -> symbol.section = bfd_und_section_ptr;
+ if (bfd_bread (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp))
+ return FALSE;
+ rcount = H_GET_32 (abfd, temp);
+ nlm_relocs = bfd_alloc (abfd, rcount * sizeof (struct nlm_relent));
+ if (!nlm_relocs)
+ return FALSE;
+ sym -> relocs = nlm_relocs;
+ sym -> rcnt = 0;
+ while (sym -> rcnt < rcount)
+ {
+ asection *section;
+
+ if (! nlm_i386_read_reloc (abfd, sym, §ion, &nlm_relocs -> reloc))
+ return FALSE;
+ nlm_relocs -> section = section;
+ nlm_relocs++;
+ sym -> rcnt++;
+ }
+ return TRUE;
+}
+
+/* Write out an external reference. */
+
+static bfd_boolean
+nlm_i386_write_external (bfd *abfd,
+ bfd_size_type count,
+ asymbol *sym,
+ struct reloc_and_sec *relocs)
+{
+ unsigned int i;
+ bfd_byte len;
+ unsigned char temp[NLM_TARGET_LONG_SIZE];
+
+ len = strlen (sym->name);
+ if ((bfd_bwrite (&len, (bfd_size_type) sizeof (bfd_byte), abfd)
+ != sizeof (bfd_byte))
+ || bfd_bwrite (sym->name, (bfd_size_type) len, abfd) != len)
+ return FALSE;
+
+ bfd_put_32 (abfd, count, temp);
+ if (bfd_bwrite (temp, (bfd_size_type) sizeof (temp), abfd) != sizeof (temp))
+ return FALSE;
+
+ for (i = 0; i < count; i++)
+ if (! nlm_i386_write_import (abfd, relocs[i].sec, relocs[i].rel))
+ return FALSE;
+
+ return TRUE;
}
+#include "nlmswap.h"
+
static const struct nlm_backend_data nlm32_i386_backend =
{
+ "NetWare Loadable Module\032",
+ sizeof (Nlm32_i386_External_Fixed_Header),
+ 0, /* Optional_prefix_size. */
bfd_arch_i386,
+ 0,
+ FALSE,
+ 0, /* Backend_object_p. */
+ 0, /* Write_prefix_func. */
nlm_i386_read_reloc,
- nlm_i386_write_reloc,
- nlm_i386_mangle_relocs
+ nlm_i386_mangle_relocs,
+ nlm_i386_read_import,
+ nlm_i386_write_import,
+ 0, /* Set_public_section. */
+ 0, /* Set_public_offset. */
+ nlm_swap_fixed_header_in,
+ nlm_swap_fixed_header_out,
+ nlm_i386_write_external,
+ 0, /* Write_export. */
};
#define TARGET_LITTLE_NAME "nlm32-i386"
-#define TARGET_LITTLE_SYM nlmNAME(i386_vec)
-#define TARGET_BACKEND_DATA &nlm32_i386_backend
+#define TARGET_LITTLE_SYM i386_nlm32_vec
+#define TARGET_BACKEND_DATA & nlm32_i386_backend
#include "nlm-target.h"
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