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Implement -taso command line option.

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Nick Clifton 2000-07-28 00:57:45 +00:00
parent 456981d715
commit 88cdf29775
2 changed files with 93 additions and 0 deletions
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8
ld/ChangeLog
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@ -1,3 +1,11 @@
2000-07-27 Ivan Kokshaysky <ink@jurassic.park.msu.ru>
* emulparams/elf64alpha.sh: Implement "-taso" emulation
specific option to fit 64-bit executable in the lower
31-bit address range. This is done by changing start
address of .interp (the very first section of executable)
and then setting EF_ALPHA_32BIT elf header flag.
2000-07-21 Michael Sokolov <msokolov@ivan.Harhan.ORG>
* emultempl/m68kcoff.em: New file.

85
ld/emulparams/elf64alpha.sh
View file

@ -13,3 +13,88 @@ DATA_PLT=
NOP=0x47ff041f
OTHER_READONLY_SECTIONS='.reginfo : { *(.reginfo) }'
# This code gets inserted into the generic elf32.sc linker script
# and allows us to define our own command line switches.
PARSE_AND_LIST_ARGS='
#define OPTION_TASO 300
/* Set the start address as in the Tru64 ld */
#define ALPHA_TEXT_START_32BIT 0x12000000
static int elf64alpha_32bit = 0;
static struct option longopts[] =
{
{"taso", no_argument, NULL, OPTION_TASO},
{NULL, no_argument, NULL, 0}
};
static void
gld_elf64alpha_list_options (file)
FILE * file;
{
fprintf (file, _(
" -taso Load executable in the lower 31-bit addressable
virtual address range.\n"));
}
struct ld_emulation_xfer_struct ld_elf64alpha_emulation;
static void gld_elf64alpha_finish ();
static int
gld_elf64alpha_parse_args (argc, argv)
int argc;
char ** argv;
{
int longind;
int optc;
int prevoptind = optind;
int prevopterr = opterr;
int wanterror;
static int lastoptind = -1;
if (lastoptind != optind)
opterr = 0;
wanterror = opterr;
lastoptind = optind;
optc = getopt_long_only (argc, argv, "-", longopts, & longind);
opterr = prevopterr;
switch (optc)
{
default:
if (wanterror)
xexit (1);
optind = prevoptind;
return 0;
case EOF:
if (elf64alpha_32bit && !link_info.shared && !link_info.relocateable)
{
lang_section_start (".interp",
exp_binop ('\''+'\'',
exp_intop (ALPHA_TEXT_START_32BIT),
exp_nameop (SIZEOF_HEADERS, NULL)));
ld_elf64alpha_emulation.finish = gld_elf64alpha_finish;
}
return 0;
case OPTION_TASO:
elf64alpha_32bit = 1;
break;
}
return 1;
}
#include "elf/internal.h"
#include "elf/alpha.h"
#include "elf-bfd.h"
static void
gld_elf64alpha_finish ()
{
elf_elfheader (output_bfd)->e_flags |= EF_ALPHA_32BIT;
}'