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author | Richard Henderson <rth@redhat.com> | 1999-05-03 07:29:06 +0000 |
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committer | Richard Henderson <rth@redhat.com> | 1999-05-03 07:29:06 +0000 |
commit | 860acaebec6b57ce27e244cc02a58e6651a4b6c3 (patch) | |
tree | eff5420756a4bd56b40b74c2b828b261f327610b /bfd/nlm32-sparc.c | |
parent | f9c53ad2d7cb541cbe821d645b90437ac063e5db (diff) | |
download | gdb-860acaebec6b57ce27e244cc02a58e6651a4b6c3.tar.gz |
Initial revision
Diffstat (limited to 'bfd/nlm32-sparc.c')
-rw-r--r-- | bfd/nlm32-sparc.c | 440 |
1 files changed, 440 insertions, 0 deletions
diff --git a/bfd/nlm32-sparc.c b/bfd/nlm32-sparc.c new file mode 100644 index 00000000000..5963adbc70b --- /dev/null +++ b/bfd/nlm32-sparc.c @@ -0,0 +1,440 @@ +/* Support for 32-bit SPARC NLM (NetWare Loadable Module) + Copyright (C) 1993 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" + +#define ARCH_SIZE 32 + +#include "nlm/sparc32-ext.h" +#define Nlm_External_Fixed_Header Nlm32_sparc_External_Fixed_Header + +#include "libnlm.h" + +static boolean nlm_sparc_read_reloc + PARAMS ((bfd *, nlmNAME(symbol_type) *, asection **, arelent *)); +static boolean nlm_sparc_write_reloc + PARAMS ((bfd *, asection *, arelent *)); +static boolean nlm_sparc_mangle_relocs + PARAMS ((bfd *, asection *, PTR, bfd_vma, bfd_size_type)); +static boolean nlm_sparc_read_import + PARAMS ((bfd *, nlmNAME(symbol_type) *)); +static boolean nlm_sparc_write_import + PARAMS ((bfd *, asection *, arelent *)); +static boolean nlm_sparc_write_external + PARAMS ((bfd *, bfd_size_type, asymbol *, struct reloc_and_sec *)); + +enum reloc_type + { + R_SPARC_NONE = 0, + R_SPARC_8, R_SPARC_16, R_SPARC_32, + R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32, + R_SPARC_WDISP30, R_SPARC_WDISP22, + R_SPARC_HI22, R_SPARC_22, + R_SPARC_13, R_SPARC_LO10, + R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22, + R_SPARC_PC10, R_SPARC_PC22, + R_SPARC_WPLT30, + R_SPARC_COPY, + R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT, + R_SPARC_RELATIVE, + R_SPARC_UA32, + R_SPARC_max + }; + +#if 0 +static CONST char *CONST reloc_type_names[] = +{ + "R_SPARC_NONE", + "R_SPARC_8", "R_SPARC_16", "R_SPARC_32", + "R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32", + "R_SPARC_WDISP30", "R_SPARC_WDISP22", + "R_SPARC_HI22", "R_SPARC_22", + "R_SPARC_13", "R_SPARC_LO10", + "R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22", + "R_SPARC_PC10", "R_SPARC_PC22", + "R_SPARC_WPLT30", + "R_SPARC_COPY", + "R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT", + "R_SPARC_RELATIVE", + "R_SPARC_UA32", +}; +#endif + +static reloc_howto_type nlm32_sparc_howto_table[] = +{ + HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, 0,"R_SPARC_NONE", false,0,0x00000000,true), + HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,0,"R_SPARC_8", false,0,0x000000ff,true), + HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,0,"R_SPARC_16", false,0,0x0000ffff,true), + HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,0,"R_SPARC_32", false,0,0xffffffff,true), + HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP8", false,0,0x000000ff,true), + HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP16", false,0,0x0000ffff,true), + HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, 0,"R_SPARC_DISP32", false,0,0x00ffffff,true), + HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, 0,"R_SPARC_WDISP30", false,0,0x3fffffff,true), + HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, 0,"R_SPARC_WDISP22", false,0,0x003fffff,true), + HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, 0,"R_SPARC_HI22", false,0,0x003fffff,true), + HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_22", false,0,0x003fffff,true), + HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,0,"R_SPARC_13", false,0,0x00001fff,true), + HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, 0,"R_SPARC_LO10", false,0,0x000003ff,true), + HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT10", false,0,0x000003ff,true), + HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT13", false,0,0x00001fff,true), + HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_GOT22", false,0,0x003fffff,true), + HOWTO(R_SPARC_PC10, 0,2,10,false,0,complain_overflow_bitfield,0,"R_SPARC_PC10", false,0,0x000003ff,true), + HOWTO(R_SPARC_PC22, 0,2,22,false,0,complain_overflow_bitfield,0,"R_SPARC_PC22", false,0,0x003fffff,true), + HOWTO(R_SPARC_WPLT30, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_WPLT30", false,0,0x00000000,true), + HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_COPY", false,0,0x00000000,true), + HOWTO(R_SPARC_GLOB_DAT,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_GLOB_DAT",false,0,0x00000000,true), + HOWTO(R_SPARC_JMP_SLOT,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_JMP_SLOT",false,0,0x00000000,true), + HOWTO(R_SPARC_RELATIVE,0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_RELATIVE",false,0,0x00000000,true), + HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, 0,"R_SPARC_UA32", false,0,0x00000000,true), +}; + +/* Read a NetWare sparc reloc. */ + +struct nlm32_sparc_reloc_ext { + unsigned char offset[4]; + unsigned char addend[4]; + unsigned char type[1]; + unsigned char pad1[3]; +}; + +static boolean +nlm_sparc_read_reloc (abfd, sym, secp, rel) + bfd *abfd; + nlmNAME(symbol_type) *sym; + asection **secp; + arelent *rel; +{ + bfd_vma val, addend; + unsigned int index; + unsigned int type; + struct nlm32_sparc_reloc_ext tmp_reloc; + asection *code_sec, *data_sec; + + if (bfd_read (&tmp_reloc, 12, 1, abfd) != 12) + return false; + + code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME); + data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); + + *secp = code_sec; + + val = bfd_get_32 (abfd, tmp_reloc.offset); + addend = bfd_get_32 (abfd, tmp_reloc.addend); + type = bfd_get_8 (abfd, tmp_reloc.type); + + rel->address = val; + rel->addend = addend; + rel->howto = NULL; + + for (index = 0; + index < sizeof(nlm32_sparc_howto_table) / sizeof(reloc_howto_type); + index++) + if (nlm32_sparc_howto_table[index].type == type) { + rel->howto = &nlm32_sparc_howto_table[index]; + break; + } + +#ifdef DEBUG + fprintf (stderr, "%s: address = %08lx, addend = %08lx, type = %d, howto = %08lx\n", + __FUNCTION__, rel->address, rel->addend, type, rel->howto); +#endif + return true; + +} + +/* Write a NetWare sparc reloc. */ + +static boolean +nlm_sparc_write_reloc (abfd, sec, rel) + bfd *abfd; + asection *sec; + arelent *rel; +{ + bfd_vma val; + struct nlm32_sparc_reloc_ext tmp_reloc; + unsigned int index; + int type = -1; + reloc_howto_type *tmp; + + + for (index = 0; + index < sizeof (nlm32_sparc_howto_table) / sizeof(reloc_howto_type); + index++) { + tmp = &nlm32_sparc_howto_table[index]; + + if (tmp->rightshift == rel->howto->rightshift + && tmp->size == rel->howto->size + && tmp->bitsize == rel->howto->bitsize + && tmp->pc_relative == rel->howto->pc_relative + && tmp->bitpos == rel->howto->bitpos + && tmp->src_mask == rel->howto->src_mask + && tmp->dst_mask == rel->howto->dst_mask) { + type = tmp->type; + break; + } + } + if (type == -1) + abort(); + + /* + * Netware wants a list of relocs for each address. + * Format is: + * long offset + * long addend + * char type + * That should be it. + */ + + /* The value we write out is the offset into the appropriate + segment. This offset is the section vma, adjusted by the vma of + the lowest section in that segment, plus the address of the + relocation. */ +#if 0 + val = bfd_get_section_vma (abfd, (*rel->sym_ptr_ptr)->section) + rel->address; +#else + val = bfd_get_section_vma (abfd, sec) + rel->address; +#endif + +#ifdef DEBUG + fprintf (stderr, "%s: val = %08lx, addend = %08lx, type = %d\n", + __FUNCTION__, val, rel->addend, rel->howto->type); +#endif + bfd_put_32 (abfd, val, tmp_reloc.offset); + bfd_put_32 (abfd, rel->addend, tmp_reloc.addend); + bfd_put_8 (abfd, (short)(rel->howto->type), tmp_reloc.type); + + if (bfd_write (&tmp_reloc, 12, 1, abfd) != 12) + return false; + + return true; +} + +/* Mangle relocs for SPARC NetWare. We can just use the standard + SPARC relocs. */ + +static boolean +nlm_sparc_mangle_relocs (abfd, sec, data, offset, count) + bfd *abfd; + asection *sec; + PTR data; + bfd_vma offset; + bfd_size_type count; +{ + return true; +} + +/* Read a NetWare sparc import record */ +static boolean +nlm_sparc_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 */ + char *name; + + /* + * First, read in the number of relocation + * entries for this symbol + */ + if (bfd_read ((PTR) temp, 4, 1, abfd) != 4) + return false; + + rcount = bfd_get_32 (abfd, temp); + + /* + * Next, read in the length of the symbol + */ + + if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd) + != sizeof (symlength)) + return false; + sym -> symbol.the_bfd = abfd; + name = bfd_alloc (abfd, symlength + 1); + if (name == NULL) + return false; + + /* + * Then read in the symbol + */ + + if (bfd_read (name, symlength, 1, 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; + + /* + * Next, start reading in the relocs. + */ + + nlm_relocs = ((struct nlm_relent *) + 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_sparc_read_reloc (abfd, sym, §ion, + &nlm_relocs -> reloc) + == false) + return false; + nlm_relocs -> section = section; + nlm_relocs++; + sym -> rcnt++; + } + return true; +} + +static boolean +nlm_sparc_write_import (abfd, sec, rel) + bfd *abfd; + asection *sec; + arelent *rel; +{ + char temp[4]; + asection *code, *data, *bss, *symsec; + bfd_vma base; + + code = bfd_get_section_by_name (abfd, NLM_CODE_NAME); + data = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); + bss = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); + symsec = (*rel->sym_ptr_ptr)->section; + + if (symsec == code) { + base = 0; + } else if (symsec == data) { + base = bfd_section_size (abfd, code); + } else if (symsec == bss) { + base = bfd_section_size (abfd, code) + bfd_section_size (abfd, data); + } else + base = 0; + +#ifdef DEBUG + fprintf (stderr, "%s: <%x, 1>\n\t", + __FUNCTION__, base + (*rel->sym_ptr_ptr)->value); +#endif + bfd_put_32 (abfd, base + (*rel->sym_ptr_ptr)->value, temp); + if (bfd_write ((PTR)temp, 4, 1, abfd) != 4) + return false; + bfd_put_32 (abfd, 1, temp); + if (bfd_write ((PTR)temp, 4, 1, abfd) != 4) + return false; + if (nlm_sparc_write_reloc (abfd, sec, rel) == false) + return false; + return true; +} + +/* Write out an external reference. */ + +static boolean +nlm_sparc_write_external (abfd, count, sym, relocs) + 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]; + + bfd_put_32 (abfd, count, temp); + if (bfd_write (temp, sizeof(temp), 1, abfd) != sizeof (temp)) + return false; + + len = strlen (sym->name); + if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) != sizeof(bfd_byte)) + || bfd_write (sym->name, len, 1, abfd) != len) + return false; + + for (i = 0; i < count; i++) + { + if (nlm_sparc_write_reloc (abfd, relocs[i].sec, + relocs[i].rel) == false) + return false; + } + + return true; +} + +static boolean +nlm_sparc_write_export (abfd, sym, value) + bfd *abfd; + asymbol *sym; + bfd_vma value; +{ + bfd_byte len; + bfd_byte temp[4]; + +#ifdef DEBUG + fprintf (stderr, "%s: <%x, %d, %s>\n", + __FUNCTION__, value, strlen (sym->name), sym->name); +#endif + bfd_put_32 (abfd, value, temp); + len = strlen (sym->name); + + if (bfd_write (temp, 4, 1, abfd) != 4 + || bfd_write (&len, 1, 1, abfd) != 1 + || bfd_write (sym->name, len, 1, abfd) != len) + return false; + + return true; +} + +#undef nlm_swap_fixed_header_in +#undef nlm_swap_fixed_header_out + +#include "nlmswap.h" + +static const struct nlm_backend_data nlm32_sparc_backend = +{ + "NetWare SPARC Module \032", + sizeof (Nlm32_sparc_External_Fixed_Header), + 0, /* optional_prefix_size */ + bfd_arch_sparc, + 0, + false, + 0, /* backend_object_p */ + 0, /* write_prefix_func */ + nlm_sparc_read_reloc, + nlm_sparc_mangle_relocs, + nlm_sparc_read_import, + nlm_sparc_write_import, + 0, /* set_public_section */ + 0, /* get_public_offset */ + nlm_swap_fixed_header_in, + nlm_swap_fixed_header_out, + nlm_sparc_write_external, + nlm_sparc_write_export +}; + +#define TARGET_BIG_NAME "nlm32-sparc" +#define TARGET_BIG_SYM nlmNAME(sparc_vec) +#define TARGET_BACKEND_DATA &nlm32_sparc_backend + +#include "nlm-target.h" |