diff options
Diffstat (limited to 'gnu/usr.bin/binutils/bfd/evax-egsd.c')
| -rw-r--r-- | gnu/usr.bin/binutils/bfd/evax-egsd.c | 582 |
1 files changed, 582 insertions, 0 deletions
diff --git a/gnu/usr.bin/binutils/bfd/evax-egsd.c b/gnu/usr.bin/binutils/bfd/evax-egsd.c new file mode 100644 index 00000000000..f5275a98567 --- /dev/null +++ b/gnu/usr.bin/binutils/bfd/evax-egsd.c @@ -0,0 +1,582 @@ +/* evax-egsd.c -- BFD back-end for ALPHA EVAX (openVMS/AXP) files. + Copyright 1996 Free Software Foundation Inc. + + go and read the openVMS linker manual (esp. appendix B) + if you don't know what's going on here :-) + + Written by Klaus Kämpf (kkaempf@progis.de) + of proGIS Softwareentwicklung, Aachen, Germany + +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 <stdio.h> +#include <ctype.h> + +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" +#include "libbfd.h" + +#include "evax.h" + +/*-----------------------------------------------------------------------------*/ + +/* sections every evax object file has */ + +#define EVAX_ABS_NAME "$ABS$" +#define EVAX_CODE_NAME "$CODE$" +#define EVAX_LINK_NAME "$LINK$" +#define EVAX_DATA_NAME "$DATA$" +#define EVAX_BSS_NAME "$BSS$" +#define EVAX_READONLY_NAME "$READONLY$" +#define EVAX_LITERAL_NAME "$LITERAL$" + +struct sec_flags_struct { + char *name; /* name of section */ + int eflags_always; + flagword flags_always; /* flags we set always */ + int eflags_hassize; + flagword flags_hassize; /* flags we set if the section has a size > 0 */ +}; + +/* just a dummy flag array since i don't understand it yet */ + +static struct sec_flags_struct evax_section_flags[] = { + { EVAX_ABS_NAME, + (EGPS_S_V_SHR), + (SEC_DATA), + (EGPS_S_V_SHR), + (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }, + { EVAX_CODE_NAME, + (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE), + (SEC_CODE), + (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE), + (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }, + { EVAX_LINK_NAME, + (EGPS_S_V_REL|EGPS_S_V_RD), + (SEC_DATA|SEC_READONLY), + (EGPS_S_V_REL|EGPS_S_V_RD), + (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) }, + { EVAX_DATA_NAME, + (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT), + (SEC_DATA), + (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT), + (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }, + { EVAX_BSS_NAME, + (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD), + (SEC_NO_FLAGS), + (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD), + (SEC_IN_MEMORY|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }, + { EVAX_READONLY_NAME, + (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD), + (SEC_DATA|SEC_READONLY), + (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD), + (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) }, + { EVAX_LITERAL_NAME, + (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD), + (SEC_DATA|SEC_READONLY), + (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD), + (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) }, + { NULL, + (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT), + (SEC_DATA), + (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT), + (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) } +}; + +/* Retrieve bfd section flags by name and size */ + +static flagword +evax_secflag_by_name(name, size) + char *name; + int size; +{ + int i = 0; + + while (evax_section_flags[i].name != NULL) + { + if (strcmp (name, evax_section_flags[i].name) == 0) + { + if (size > 0) + return evax_section_flags[i].flags_hassize; + else + return evax_section_flags[i].flags_always; + } + i++; + } + if (size > 0) + return evax_section_flags[i].flags_hassize; + return evax_section_flags[i].flags_always; +} + + +/* Retrieve evax section flags by name and size */ + +static flagword +evax_esecflag_by_name(name, size) + char *name; + int size; +{ + int i = 0; + + while (evax_section_flags[i].name != NULL) + { + if (strcmp (name, evax_section_flags[i].name) == 0) + { + if (size > 0) + return evax_section_flags[i].eflags_hassize; + else + return evax_section_flags[i].eflags_always; + } + i++; + } + if (size > 0) + return evax_section_flags[i].eflags_hassize; + return evax_section_flags[i].eflags_always; +} + +/*-----------------------------------------------------------------------------*/ +#if EVAX_DEBUG +/* debug */ + +struct flagdescstruct { char *name; flagword value; }; + +/* Convert flag to printable string */ + +static char * +flag2str(flagdesc, flags) + struct flagdescstruct *flagdesc; + flagword flags; +{ + + static char res[64]; + int next = 0; + + res[0] = 0; + while (flagdesc->name != NULL) + { + if ((flags & flagdesc->value) != 0) + { + if (next) + strcat(res, ","); + else + next = 1; + strcat (res, flagdesc->name); + } + flagdesc++; + } + return res; +} +#endif + +/*-----------------------------------------------------------------------------*/ +/* input routines */ + +/* Process EGSD record + return 0 on success, -1 on error */ + +int +_bfd_evax_slurp_egsd (abfd) + bfd *abfd; +{ +#if EVAX_DEBUG + static struct flagdescstruct gpsflagdesc[] = + { + { "PIC", 0x0001 }, + { "LIB", 0x0002 }, + { "OVR", 0x0004 }, + { "REL", 0x0008 }, + { "GBL", 0x0010 }, + { "SHR", 0x0020 }, + { "EXE", 0x0040 }, + { "RD", 0x0080 }, + { "WRT", 0x0100 }, + { "VEC", 0x0200 }, + { "NOMOD", 0x0400 }, + { "COM", 0x0800 }, + { NULL, 0 } + }; + + static struct flagdescstruct gsyflagdesc[] = + { + { "WEAK", 0x0001 }, + { "DEF", 0x0002 }, + { "UNI", 0x0004 }, + { "REL", 0x0008 }, + { "COMM", 0x0010 }, + { "VECEP", 0x0020 }, + { "NORM", 0x0040 }, + { NULL, 0 } + }; +#endif + + int gsd_type, gsd_size; + asection *section; + unsigned char *evax_rec; + flagword new_flags, old_flags; + char *name; + asymbol *symbol; + evax_symbol_entry *entry; + unsigned long base_addr; + unsigned long align_addr; + +#if EVAX_DEBUG + evax_debug (2, "EGSD\n"); +#endif + + PRIV(evax_rec) += 8; /* skip type, size, l_temp */ + PRIV(rec_size) -= 8; + + /* calculate base address for each section */ + base_addr = 0L; + + abfd->symcount = 0; + + while (PRIV(rec_size) > 0) + { + evax_rec = PRIV(evax_rec); + _bfd_evax_get_header_values (abfd, evax_rec, &gsd_type, &gsd_size); + switch (gsd_type) + { + case EGSD_S_C_PSC: + { + /* program section definition */ + + name = _bfd_evax_save_counted_string ((char *)evax_rec+12); + section = bfd_make_section (abfd, name); + if (!section) + return -1; + old_flags = bfd_getl16 (evax_rec + 6); + section->_raw_size = bfd_getl32 (evax_rec + 8); /* allocation */ + new_flags = evax_secflag_by_name (name, (int) section->_raw_size); + if (old_flags & EGPS_S_V_REL) + new_flags |= SEC_RELOC; + if (!bfd_set_section_flags (abfd, section, new_flags)) + return -1; + section->alignment_power = evax_rec[4]; + align_addr = (1 << section->alignment_power); + if ((base_addr % align_addr) != 0) + base_addr += (align_addr - (base_addr % align_addr)); + section->vma = (bfd_vma)base_addr; + base_addr += section->_raw_size; + section->contents = ((unsigned char *) + bfd_malloc (section->_raw_size)); + if (section->contents == NULL) + return -1; + memset (section->contents, 0, (size_t) section->_raw_size); + section->_cooked_size = section->_raw_size; +#if EVAX_DEBUG + evax_debug(3, "egsd psc %d (%s, flags %04x=%s) ", + section->index, name, old_flags, flag2str(gpsflagdesc, old_flags)); + evax_debug(3, "%d bytes at 0x%08lx (mem %p)\n", + section->_raw_size, section->vma, section->contents); +#endif + } + break; + + case EGSD_S_C_SYM: + { + /* symbol specification (definition or reference) */ + + symbol = _bfd_evax_make_empty_symbol (abfd); + if (symbol == 0) + return -1; + + old_flags = bfd_getl16 (evax_rec + 6); + new_flags = BSF_NO_FLAGS; + + if (old_flags & EGSY_S_V_WEAK) + new_flags |= BSF_WEAK; + + if (evax_rec[6] & EGSY_S_V_DEF) /* symbol definition */ + { + symbol->name = + _bfd_evax_save_counted_string ((char *)evax_rec+32); + if (old_flags & EGSY_S_V_NORM) + { /* proc def */ + new_flags |= BSF_FUNCTION; + } + symbol->value = bfd_getl64 (evax_rec+8); + symbol->section = (asection *)((unsigned long) bfd_getl32 (evax_rec+28)); +#if EVAX_DEBUG + evax_debug(3, "egsd sym def #%d (%s, %d, %04x=%s)\n", abfd->symcount, + symbol->name, (int)symbol->section, old_flags, flag2str(gsyflagdesc, old_flags)); +#endif + } + else /* symbol reference */ + { +#if EVAX_DEBUG + evax_debug(3, "egsd sym ref #%d (%s, %04x=%s)\n", abfd->symcount, evax_rec+9, old_flags, flag2str(gsyflagdesc, old_flags)); +#endif + symbol->name = + _bfd_evax_save_counted_string ((char *)evax_rec+8); + symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME); + } + + symbol->flags = new_flags; + + /* save symbol in evax_symbol_table */ + + entry = (evax_symbol_entry *) bfd_hash_lookup (PRIV(evax_symbol_table), symbol->name, true, false); + if (entry == (evax_symbol_entry *)NULL) + { + bfd_set_error (bfd_error_no_memory); + return -1; + } + if (entry->symbol != (asymbol *)NULL) + { /* FIXME ?, DEC C generates this */ +#if EVAX_DEBUG + evax_debug(3, "EGSD_S_C_SYM: duplicate \"%s\"\n", symbol->name); +#endif + } + else + { + entry->symbol = symbol; + PRIV(egsd_sym_count)++; + abfd->symcount++; + } + } + break; + + case EGSD_S_C_IDC: + break; + + default: + (*_bfd_error_handler) ("unknown egsd subtype %d", gsd_type); + bfd_set_error (bfd_error_bad_value); + return -1; + + } /* switch */ + + PRIV(rec_size) -= gsd_size; + PRIV(evax_rec) += gsd_size; + + } /* while (recsize > 0) */ + + if (abfd->symcount > 0) + abfd->flags |= HAS_SYMS; + + return 0; +} + +/*-----------------------------------------------------------------------------*/ +/* output routines */ + +/* Write section and symbol directory of bfd abfd */ + +int +_bfd_evax_write_egsd (abfd) + bfd *abfd; +{ + asection *section; + asymbol *symbol; + int symnum; + int last_index = -1; + char dummy_name[10]; + char *sname; + flagword new_flags, old_flags; + char uname[200]; + char *nptr, *uptr; + +#if EVAX_DEBUG + evax_debug (2, "evax_write_egsd(%p)\n", abfd); +#endif + + /* output sections */ + + section = abfd->sections; +#if EVAX_DEBUG + evax_debug (3, "%d sections found\n", abfd->section_count); +#endif + + /* egsd is quadword aligned */ + + _bfd_evax_output_alignment (abfd, 8); + + _bfd_evax_output_begin (abfd, EOBJ_S_C_EGSD, -1); + _bfd_evax_output_long (abfd, 0); + _bfd_evax_output_push (abfd); /* prepare output for subrecords */ + + while (section != 0) + { +#if EVAX_DEBUG + evax_debug (3, "Section #%d %s, %d bytes\n", section->index, section->name, (int)section->_raw_size); +#endif + + /* 13 bytes egsd, max 31 chars name -> should be 44 bytes */ + if (_bfd_evax_output_check (abfd, 64) < 0) + { + _bfd_evax_output_pop (abfd); + _bfd_evax_output_end (abfd); + _bfd_evax_output_begin (abfd, EOBJ_S_C_EGSD, -1); + _bfd_evax_output_long (abfd, 0); + _bfd_evax_output_push (abfd); /* prepare output for subrecords */ + } + + /* Create dummy sections to keep consecutive indices */ + + while (section->index - last_index > 1) + { +#if EVAX_DEBUG + evax_debug (3, "index %d, last %d\n", section->index, last_index); +#endif + _bfd_evax_output_begin (abfd, EGSD_S_C_PSC, -1); + _bfd_evax_output_short (abfd, 0); + _bfd_evax_output_short (abfd, 0); + _bfd_evax_output_long (abfd, 0); + sprintf (dummy_name, ".DUMMY%02d", last_index); + _bfd_evax_output_counted (abfd, dummy_name); + _bfd_evax_output_flush (abfd); + last_index++; + } + + /* Don't know if this is neccesary for the linker but for now it keeps + evax_slurp_egsd happy */ + + sname = (char *)section->name; + if (*sname == '.') + { + sname++; + if ((*sname == 't') && (strcmp (sname, "text") == 0)) + sname = EVAX_CODE_NAME; + else if ((*sname == 'd') && (strcmp (sname, "data") == 0)) + sname = EVAX_DATA_NAME; + else if ((*sname == 'b') && (strcmp (sname, "bss") == 0)) + sname = EVAX_BSS_NAME; + else if ((*sname == 'l') && (strcmp (sname, "link") == 0)) + sname = EVAX_LINK_NAME; + else if ((*sname == 'r') && (strcmp (sname, "rdata") == 0)) + sname = EVAX_READONLY_NAME; + else if ((*sname == 'l') && (strcmp (sname, "literal") == 0)) + sname = EVAX_LITERAL_NAME; + } + + _bfd_evax_output_begin (abfd, EGSD_S_C_PSC, -1); + _bfd_evax_output_short (abfd, section->alignment_power & 0xff); + _bfd_evax_output_short (abfd, + evax_esecflag_by_name (sname, + section->_raw_size)); + _bfd_evax_output_long (abfd, section->_raw_size); + _bfd_evax_output_counted (abfd, sname); + _bfd_evax_output_flush (abfd); + + last_index = section->index; + section = section->next; + } + + /* output symbols */ + +#if EVAX_DEBUG + evax_debug (3, "%d symbols found\n", abfd->symcount); +#endif + + bfd_set_start_address (abfd, (bfd_vma)-1); + + for (symnum = 0; symnum < abfd->symcount; symnum++) + { + + symbol = abfd->outsymbols[symnum]; + if (*(symbol->name) == '_') + { + if (strcmp (symbol->name, "__main") == 0) + bfd_set_start_address (abfd, (bfd_vma)symbol->value); + } + old_flags = symbol->flags; + + if (((old_flags & BSF_GLOBAL) == 0) /* not xdef */ + && (!bfd_is_und_section (symbol->section))) /* and not xref */ + continue; /* dont output */ + + /* 13 bytes egsd, max 64 chars name -> should be 77 bytes */ + + if (_bfd_evax_output_check (abfd, 80) < 0) + { + _bfd_evax_output_pop (abfd); + _bfd_evax_output_end (abfd); + _bfd_evax_output_begin (abfd, EOBJ_S_C_EGSD, -1); + _bfd_evax_output_long (abfd, 0); + _bfd_evax_output_push (abfd); /* prepare output for subrecords */ + } + + _bfd_evax_output_begin (abfd, EGSD_S_C_SYM, -1); + + _bfd_evax_output_short (abfd, 0); /* data type, alignment */ + + new_flags = 0; + if (old_flags & BSF_WEAK) + new_flags |= EGSY_S_V_WEAK; + if (old_flags & BSF_FUNCTION) + { + new_flags |= EGSY_S_V_NORM; + new_flags |= EGSY_S_V_REL; + } + if (old_flags & BSF_GLOBAL) + { + new_flags |= EGSY_S_V_DEF; + if (!bfd_is_abs_section (symbol->section)) + new_flags |= EGSY_S_V_REL; + } + _bfd_evax_output_short (abfd, new_flags); + + if (old_flags & BSF_GLOBAL) /* symbol definition */ + { + if (old_flags & BSF_FUNCTION) + { + _bfd_evax_output_quad (abfd, symbol->value); + _bfd_evax_output_quad (abfd, + ((asymbol *)(symbol->udata.p))->value); + _bfd_evax_output_long (abfd, + (((asymbol *)(symbol->udata.p)) + ->section->index)); + _bfd_evax_output_long (abfd, symbol->section->index); + } + else + { + _bfd_evax_output_quad (abfd, symbol->value); /* L_VALUE */ + _bfd_evax_output_quad (abfd, 0); /* L_CODE_ADDRESS */ + _bfd_evax_output_long (abfd, 0); /* L_CA_PSINDX */ + _bfd_evax_output_long (abfd, symbol->section->index);/* L_PSINDX, FIXME */ + } + } + if (strlen ((char *)symbol->name) > 198) + { + (*_bfd_error_handler) ("Name '%s' too long\n", symbol->name); + abort (); + } + nptr = (char *)symbol->name; + uptr = uname; + while (*nptr) + { + if (islower (*nptr)) + *uptr = toupper (*nptr); + else + *uptr = *nptr; + uptr++; + nptr++; + } + *uptr = 0; + _bfd_evax_output_counted (abfd, uname); + + _bfd_evax_output_flush (abfd); + + } + + _bfd_evax_output_alignment (abfd, 8); + _bfd_evax_output_pop (abfd); + _bfd_evax_output_end (abfd); + + return 0; +} |