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Add ORIGIN and LENGTH linker script operators.

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This commit is contained in:
Nick Clifton
2004-11-19 09:31:55 +00:00
parent 288f74fae9
commit 3ec5763260
9 changed files with 287 additions and 152 deletions
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54
ld/ldexp.c
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@ -4,22 +4,22 @@
Free Software Foundation, Inc.
Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
This file is part of GLD, the Gnu Linker.
This file is part of GLD, the Gnu Linker.
GLD 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, or (at your option)
any later version.
GLD 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, or (at your option)
any later version.
GLD 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.
GLD 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 GLD; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
You should have received a copy of the GNU General Public License
along with GLD; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
/* This module is in charge of working out the contents of expressions.
@ -105,6 +105,8 @@ exp_print_token (token_code_type code, int infix_p)
{ DATA_SEGMENT_ALIGN, "DATA_SEGMENT_ALIGN" },
{ DATA_SEGMENT_RELRO_END, "DATA_SEGMENT_RELRO_END" },
{ DATA_SEGMENT_END, "DATA_SEGMENT_END" },
{ ORIGIN, "ORIGIN" },
{ LENGTH, "LENGTH" },
{ SEGMENT_START, "SEGMENT_START" }
};
unsigned int idx;
@ -645,6 +647,32 @@ fold_name (etree_type *tree,
}
break;
case LENGTH:
{
lang_memory_region_type *mem;
mem = lang_memory_region_lookup (tree->name.name, FALSE);
if (mem != NULL)
result = new_abs (mem->length);
else
einfo (_("%F%S: undefined MEMORY region `%s' referenced in expression\n"),
tree->name.name);
}
break;
case ORIGIN:
{
lang_memory_region_type *mem;
mem = lang_memory_region_lookup (tree->name.name, FALSE);
if (mem != NULL)
result = new_abs (mem->origin);
else
einfo (_("%F%S: undefined MEMORY region `%s' referenced in expression\n"),
tree->name.name);
}
break;
default:
FAIL ();
break;