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Implement MEMORY attributes for unknown sections

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This commit is contained in:
Michael Meissner 1998-01-02 17:27:05 +00:00
parent a26171caf4
commit d3c324e51d
5 changed files with 214 additions and 30 deletions
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27
ld/ChangeLog
View file

@ -1,4 +1,31 @@
Fri Jan 2 20:15:37 1998 Michael Meissner <meissner@cygnus.com>
* ldgram.y (attributes_opt): Pass region pointer to
lang_set_flags, not &region->flags.
* ldlang.c (lang_memory_default): New function to figure out a
default memory region for a section if it was not specified.
(lang_memory_region_lookup): Zero flags, not_flags field.
(lang_map{,_flags}): Print attribute flags in memory map.
(lang_size_sections): Call lang_memory_default to get default
memory region.
(lang_set_flags): Implement attribute flags for real. Take new
argument to give the flags we are to skip for this region.
* ldlang.h (memory_region_struct): Add not_flags field, make both
flags fields flagword type.
(lang_output_section_state): Make flags field flagword type.
(lang_set_flags): Update prototype to match new calling sequence.
(lang_memory_region_default): Add prototype.
start-sanitize-d30v
* emulparams/d30v{_e,_o,elf}.sh ({TEXT,DATA,EMEM}_DEF_SECTION):
Define whether or not the region gets default sections, and if so,
what sections.
* scripttempl/elfd30v.sc (MEMORY): Set up which of the regions get
default sections.
Thu Jan 1 22:58:04 1998 Michael Meissner <meissner@cygnus.com>
* scripttempl/elfd30v.sc (.eh_frame): Link into the data section.

18
ld/emulparams/d30v_e.sh Normal file
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@ -0,0 +1,18 @@
MACHINE=
SCRIPT_NAME=elfd30v
OUTPUT_FORMAT="elf32-d30v"
TEXT_START_ADDR=0x00000000
DATA_START_ADDR=0x20000000
EMEM_START_ADDR=0x80000000
STACK_START_ADDR=0x20008000
TEXT_SIZE=64K
DATA_SIZE=32K
EMEM_SIZE=8M
TEXT_MEMORY=emem
DATA_MEMORY=emem
BSS_MEMORY=emem
TEXT_DEF_SECTION=""
DATA_DEF_SECTION=""
EMEM_DEF_SECTION="(rwx)"
ARCH=d30v
EMBEDDED=t

18
ld/emulparams/d30v_o.sh Normal file
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@ -0,0 +1,18 @@
MACHINE=
SCRIPT_NAME=elfd30v
OUTPUT_FORMAT="elf32-d30v"
TEXT_START_ADDR=0x00000000
DATA_START_ADDR=0x20000000
EMEM_START_ADDR=0x80000000
STACK_START_ADDR=0x20008000
TEXT_SIZE=64K
DATA_SIZE=32K
EMEM_SIZE=8M
TEXT_MEMORY=text
DATA_MEMORY=data
BSS_MEMORY=data
TEXT_DEF_SECTION="(x)"
DATA_DEF_SECTION="(rw)"
EMEM_DEF_SECTION=""
ARCH=d30v
EMBEDDED=t

18
ld/emulparams/d30velf.sh Normal file
View file

@ -0,0 +1,18 @@
MACHINE=
SCRIPT_NAME=elfd30v
OUTPUT_FORMAT="elf32-d30v"
TEXT_START_ADDR=0x00000000
DATA_START_ADDR=0x20000000
EMEM_START_ADDR=0x80000000
STACK_START_ADDR=0x20008000
TEXT_SIZE=64K
DATA_SIZE=32K
EMEM_SIZE=8M
TEXT_MEMORY=text
DATA_MEMORY=data
BSS_MEMORY=data
TEXT_DEF_SECTION="(x)"
DATA_DEF_SECTION="(rw)"
EMEM_DEF_SECTION=""
ARCH=d30v
EMBEDDED=t

163
ld/ldlang.c
View file

@ -128,6 +128,7 @@ static bfd_vma size_input_section
lang_output_section_statement_type *output_section_statement,
fill_type fill, bfd_vma dot, boolean relax));
static void lang_finish PARAMS ((void));
static void ignore_bfd_errors PARAMS ((const char *, ...));
static void lang_check PARAMS ((void));
static void lang_common PARAMS ((void));
static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
@ -412,7 +413,6 @@ lang_memory_region_type *
lang_memory_region_lookup (name)
CONST char *CONST name;
{
lang_memory_region_type *p;
for (p = lang_memory_region_list;
@ -451,6 +451,8 @@ lang_memory_region_lookup (name)
*lang_memory_region_list_tail = new;
lang_memory_region_list_tail = &new->next;
new->origin = 0;
new->flags = 0;
new->not_flags = 0;
new->length = ~(bfd_size_type)0;
new->current = 0;
new->had_full_message = false;
@ -460,6 +462,31 @@ lang_memory_region_lookup (name)
}
lang_memory_region_type *
lang_memory_default (section)
asection *section;
{
lang_memory_region_type *p;
flagword sec_flags = section->flags;
/* Override SEC_DATA to mean a writable section. */
if (sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE) == SEC_ALLOC)
sec_flags |= SEC_DATA;
for (p = lang_memory_region_list;
p != (lang_memory_region_type *) NULL;
p = p->next)
{
if ((p->flags & sec_flags) != 0
&& (p->not_flags & sec_flags) == 0)
{
return p;
}
}
return lang_memory_region_lookup ("*default*");
}
lang_output_section_statement_type *
lang_output_section_find (name)
CONST char *CONST name;
@ -518,14 +545,34 @@ lang_output_section_statement_lookup (name)
return lookup;
}
static void
lang_map_flags (flag)
flagword flag;
{
if (flag & SEC_ALLOC)
minfo ("a");
if (flag & SEC_CODE)
minfo ("x");
if (flag & SEC_READONLY)
minfo ("r");
if (flag & SEC_DATA)
minfo ("w");
if (flag & SEC_LOAD)
minfo ("l");
}
void
lang_map ()
{
lang_memory_region_type *m;
minfo ("\nMemory Configuration\n\n");
fprintf (config.map_file, "%-16s %-18s %-18s\n",
"Name", "Origin", "Length");
fprintf (config.map_file, "%-16s %-18s %-18s %s\n",
"Name", "Origin", "Length", "Attributes");
for (m = lang_memory_region_list;
m != (lang_memory_region_type *) NULL;
@ -545,7 +592,26 @@ lang_map ()
++len;
}
minfo ("0x%V\n", m->length);
minfo ("0x%V", m->length);
if (m->flags || m->not_flags)
{
#ifndef BFD64
minfo (" ");
#endif
if (m->flags)
{
print_space ();
lang_map_flags (m->flags);
}
if (m->not_flags)
{
minfo (" !");
lang_map_flags (m->not_flags);
}
}
print_nl ();
}
fprintf (config.map_file, "\nLinker script and memory map\n\n");
@ -2101,7 +2167,7 @@ lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
*/
if (os->region == (lang_memory_region_type *) NULL)
{
os->region = lang_memory_region_lookup ("*default*");
os->region = lang_memory_default (os->bfd_section);
}
dot = os->region->current;
if (os->section_alignment == -1)
@ -2630,6 +2696,20 @@ lang_finish ()
}
}
/* This is a small function used when we want to ignore errors from
BFD. */
static void
#ifdef ANSI_PROTOTYPES
ignore_bfd_errors (const char *s, ...)
#else
ignore_bfd_errors (s)
const char *s;
#endif
{
/* Don't do anything. */
}
/* Check that the architecture of all the input files is compatible
with the output file. Also call the backend to let it do any
other checking that is needed. */
@ -2649,13 +2729,31 @@ lang_check ()
compatible = bfd_arch_get_compatible (input_bfd,
output_bfd);
if (compatible == NULL)
einfo ("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n",
bfd_printable_name (input_bfd), input_bfd,
bfd_printable_name (output_bfd));
else if (! bfd_merge_private_bfd_data (input_bfd, output_bfd))
{
einfo ("%E%X: failed to merge target specific data of file %B\n", input_bfd);
if (command_line.warn_mismatch)
einfo ("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n",
bfd_printable_name (input_bfd), input_bfd,
bfd_printable_name (output_bfd));
}
else
{
bfd_error_handler_type pfn;
/* If we aren't supposed to warn about mismatched input
files, temporarily set the BFD error handler to a
function which will do nothing. We still want to call
bfd_merge_private_bfd_data, since it may set up
information which is needed in the output file. */
if (! command_line.warn_mismatch)
pfn = bfd_set_error_handler (ignore_bfd_errors);
if (! bfd_merge_private_bfd_data (input_bfd, output_bfd))
{
if (command_line.warn_mismatch)
einfo ("%E%X: failed to merge target specific data of file %B\n",
input_bfd);
}
if (! command_line.warn_mismatch)
bfd_set_error_handler (pfn);
}
}
}
@ -2853,36 +2951,41 @@ lang_place_orphans ()
void
lang_set_flags (ptr, flags)
int *ptr;
lang_memory_region_type *ptr;
CONST char *flags;
{
boolean state = false;
flagword *ptr_flags = &ptr->flags;
*ptr = 0;
ptr->flags = ptr->not_flags = 0;
while (*flags)
{
if (*flags == '!')
{
state = false;
flags++;
}
else
state = true;
switch (*flags)
{
case 'R':
/* ptr->flag_read = state; */
case '!':
ptr_flags = (ptr_flags == &ptr->flags) ? &ptr->not_flags : &ptr->flags;
break;
case 'W':
/* ptr->flag_write = state; */
case 'A': case 'a':
*ptr_flags |= SEC_ALLOC;
break;
case 'X':
/* ptr->flag_executable= state;*/
case 'R': case 'r':
*ptr_flags |= SEC_READONLY;
break;
case 'L':
case 'I':
/* ptr->flag_loadable= state;*/
case 'W': case 'w':
*ptr_flags |= SEC_DATA;
break;
case 'X': case 'x':
*ptr_flags |= SEC_CODE;
break;
case 'L': case 'l':
case 'I': case 'i':
*ptr_flags |= SEC_LOAD;
break;
default:
einfo ("%P%F: invalid syntax in flags\n");
break;