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bfd/

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* bfd-in.h (bfd_elf32_arm_set_target_relocs): Add prototype.
	(bfd_elf32_arm_process_before_allocation): Update prototype.
	* bfd-in2.h: Regenerate.
	* bfd/elf32-arm.h (elf32_arm_link_hash_table): Add target2_reloc.
	(elf32_arm_link_hash_table_create): Set it.
	(bfd_elf32_arm_process_before_allocation): Remove target1_is_rel.
	(bfd_elf32_arm_set_target_relocs): New function.
	(arm_real_reloc_type): New function.
	(elf32_arm_final_link_relocate): Use it.  Handle R_ARM_PREL31 and
	R_ARM_GOT_PREL.  Remove R_ARM_TARGET1.
	(elf32_arm_gc_sweep_hook): Ditto.
	(elf32_arm_check_relocs): Ditto.
	(elf32_arm_relocate_section): Handle R_ARM_GOT_PREL.
	* elfarm-nabi.c (elf32_arm_howto_table): Add R_ARM_PREL31 and
	R_ARM_GOT_TARGET2.
	(elf32_arm_got_prel): New variable.
	(elf32_arm_howto_from_type): New function.
	(elf32_arm_info_to_howto): Use it.
	(elf32_arm_reloc_map): Add BFD_RELOC_ARM_PREL31 and
	BFD_RELOC_ARM_TARGET2.
	* libbfd.h: Regenerate.
	* reloc.c: Add BFD_RELOC_ARM_TARGET2 and BFD_RELOC_ARM_PREL31.
gas/
	* config/tc-arm.c (s_arm_rel31): New funciton.
	(md_pseudo_table): Add .rel31.
	(md_apply_fix3): Handle BFD_RELOC_ARM_TARGET2,
	BFD_RELOC_32_PCREL and BFD_RELOC_ARM_PREL31.
	(tc_gen_reloc): Handle BFD_RELOC_ARM_PREL31 and BFD_RELOC_ARM_TARGET2.
	(arm_fix_adjustable): Return 0 for BFD_RELOC_ARM_TARGET2.
	(arm_parse_reloc): Add (target2).
gas/testsuite/
	* gas/arm/pic.s: Add (target2).
	* gas/arm/pic.d: Ditto.
include/
	* elf/arm.h: Remove R_ARM_STKCHK and R_ARM_THM_STKCHK.
	Add R_ARM_TARGET2, R_ARM_PREL31, R_ARM_GOT_ABS, R_ARM_GOT_PREL,
	R_ARM_GOT_BREL12, R_ARM_GOTOFF12 and R_ARM_GOTRELAX.
ld/
	* ld.texinfo: Rename arm-specific section.  Document --target*
	* emulparams/armelf_fbsd.sh: Set TARGET2_TYPE.
	* emulparams/armelf_linux.sh: Ditto.
	* emulparams/armelf_nbsd.sh: Ditto.
	* emultempl/armelf.em: Set default for TARGET2_TYPE.
	(target2_type): New variable.
	(arm_elf_before_allocation): Don't pass target1_type.
	(arm_elf_create_output_section_statements): New function.
	(PARSE_AND_LIST_PROLOGUE): Add OPTION_TARGET2.
	(PARSE_AND_LIST_LONGOPTS, PARSE_AND_LIST_OPTIONS): Add --target=.
	(PARSE_AND_LIST_ARGS_CASES): Handle OPTION_TARGET2.
	(LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS): Set.
	* emultempl/armelf_oabi.em (_before_allocation): Remove extra
	argument to bfd_elf32_arm_process_before_allocation.
ld/testsuite/
	* ld-arm/arm-target1-{abs,rel}.d}: New files.
	* ld-arm/arm-target1.s: New file.
	* ld-arm/arm-target2-{,got-}rel.d: New files.
	* ld-arm/arm-target2.s: New file.
	* ld-arm/arm-rel31.d: New files.
	* ld-arm/arm-rel31.s: New files.
	* ld-arm/arm.ld: New file.
	* ld-arm/arm-elf.exp: Add new tests.
This commit is contained in:
Paul Brook 2004-09-17 12:18:19 +00:00
parent f6e332e660
commit 3674e28ad0
18 changed files with 155 additions and 6 deletions
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17
ld/ChangeLog
View File

@ -1,3 +1,20 @@
2004-09-17 Paul Brook <paul@codesourcery.com>
* ld.texinfo: Rename arm-specific section. Document --target*
* emulparams/armelf_fbsd.sh: Set TARGET2_TYPE.
* emulparams/armelf_linux.sh: Ditto.
* emulparams/armelf_nbsd.sh: Ditto.
* emultempl/armelf.em: Set default for TARGET2_TYPE.
(target2_type): New variable.
(arm_elf_before_allocation): Don't pass target1_type.
(arm_elf_create_output_section_statements): New function.
(PARSE_AND_LIST_PROLOGUE): Add OPTION_TARGET2.
(PARSE_AND_LIST_LONGOPTS, PARSE_AND_LIST_OPTIONS): Add --target=.
(PARSE_AND_LIST_ARGS_CASES): Handle OPTION_TARGET2.
(LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS): Set.
* emultempl/armelf_oabi.em (_before_allocation): Remove extra
argument to bfd_elf32_arm_process_before_allocation.
2004-09-17 Alan Modra <amodra@bigpond.net.au>
* ldexp.c (fold_name): Update u.undef.next refs.

1
ld/emulparams/armelf_fbsd.sh
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@ -1,2 +1,3 @@
. ${srcdir}/emulparams/armelf.sh
. ${srcdir}/emulparams/elf_fbsd.sh
TARGET2_TYPE=got-rel

1
ld/emulparams/armelf_linux.sh
View File

@ -16,6 +16,7 @@ OTHER_BSS_END_SYMBOLS='_bss_end__ = . ; __bss_end__ = . ; __end__ = . ;'
OTHER_SECTIONS='.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }'
TEXT_START_ADDR=0x00008000
TARGET2_TYPE=got-rel
# ARM does not support .s* sections.
NO_SMALL_DATA=yes

1
ld/emulparams/armelf_nbsd.sh
View File

@ -1,6 +1,7 @@
. ${srcdir}/emulparams/armelf.sh
MAXPAGESIZE=0x8000
TEXT_START_ADDR=0x00008000
TARGET2_TYPE=got-rel
unset STACK_ADDR
unset EMBEDDED

25
ld/emultempl/armelf.em
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@ -22,6 +22,7 @@
# This file is sourced from elf32.em, and defines extra arm-elf
# specific routines.
#
test -z $TARGET2_TYPE && TARGET2_TYPE="rel"
cat >>e${EMULATION_NAME}.c <<EOF
static int no_pipeline_knowledge = 0;
@ -29,6 +30,7 @@ static char *thumb_entry_symbol = NULL;
static bfd *bfd_for_interwork;
static int byteswap_code = 0;
static int target1_is_rel = 0${TARGET1_IS_REL};
static char *target2_type = "${TARGET2_TYPE}";
static void
gld${EMULATION_NAME}_before_parse (void)
@ -121,8 +123,7 @@ arm_elf_before_allocation (void)
{
if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, & link_info,
no_pipeline_knowledge,
byteswap_code,
target1_is_rel))
byteswap_code))
{
/* xgettext:c-format */
einfo (_("Errors encountered processing file %s"), is->filename);
@ -182,6 +183,14 @@ arm_elf_finish (void)
thumb_entry_symbol);
}
/* This is a convenitent point to tell BFD about target specific flags.
After the output has been created, but before inputs are read. */
static void
arm_elf_create_output_section_statements (void)
{
bfd_elf32_arm_set_target_relocs (&link_info, target1_is_rel, target2_type);
}
EOF
# Define some shell vars to insert bits of code into the standard elf
@ -192,6 +201,7 @@ PARSE_AND_LIST_PROLOGUE='
#define OPTION_BE8 302
#define OPTION_TARGET1_REL 303
#define OPTION_TARGET1_ABS 304
#define OPTION_TARGET2 305
'
PARSE_AND_LIST_SHORTOPTS=p
@ -202,14 +212,16 @@ PARSE_AND_LIST_LONGOPTS='
{ "be8", no_argument, NULL, OPTION_BE8},
{ "target1-rel", no_argument, NULL, OPTION_TARGET1_REL},
{ "target1-abs", no_argument, NULL, OPTION_TARGET1_ABS},
{ "target2", required_argument, NULL, OPTION_TARGET2},
'
PARSE_AND_LIST_OPTIONS='
fprintf (file, _(" -p --no-pipeline-knowledge Stop the linker knowing about the pipeline length\n"));
fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n"));
fprintf (file, _(" --be8 Oputput BE8 format image\n"));
fprintf (file, _(" --target1-rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n"));
fprintf (file, _(" --target1-abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n"));
fprintf (file, _(" --target1=rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n"));
fprintf (file, _(" --target1=abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n"));
fprintf (file, _(" --target2=<type> Specify definition of R_ARM_TARGET2\n"));
'
PARSE_AND_LIST_ARGS_CASES='
@ -232,12 +244,17 @@ PARSE_AND_LIST_ARGS_CASES='
case OPTION_TARGET1_ABS:
target1_is_rel = 0;
break;
case OPTION_TARGET2:
target2_type = optarg;
break;
'
# We have our own after_open and before_allocation functions, but they call
# the standard routines, so give them a different name.
LDEMUL_AFTER_OPEN=arm_elf_after_open
LDEMUL_BEFORE_ALLOCATION=arm_elf_before_allocation
LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=arm_elf_create_output_section_statements
# Replace the elf before_parse function with our own.
LDEMUL_BEFORE_PARSE=gld"${EMULATION_NAME}"_before_parse

2
ld/emultempl/armelf_oabi.em
View File

@ -69,7 +69,7 @@ gld${EMULATION_NAME}_before_allocation (void)
LANG_FOR_EACH_INPUT_STATEMENT (is)
{
if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, &link_info,
0, 0, 0))
0, 0))
{
/* xgettext:c-format */
einfo (_("Errors encountered processing file %s"), is->filename);

22
ld/ld.texinfo
View File

@ -4877,7 +4877,7 @@ point to the function trampoline.
@end ifset
@node ARM
@section @command{ld}'s Support for Interworking Between ARM and Thumb Code
@section @command{ld} and the ARM family
@cindex ARM interworking support
@kindex --support-old-code
@ -4907,6 +4907,26 @@ The @samp{--be8} switch instructs @command{ld} to generate BE8 format
executables. This option is only valid when linking big-endian objects.
The resulting image will contain big-endian data and little-endian code.
@cindex TARGET1
@kindex --target1-rel
@kindex --target1-abs
The @samp{R_ARM_TARGET1} relocation is typically used for entries in the
@samp{.init_array} section. It is interpreted as either @samp{R_ARM_REL32}
or @samp{R_ARM_ABS32}, depending on the target. The @samp{--target1-rel}
and @samp{--target1-abs} switches override the default.
@cindex TARGET2
@kindex --target2=@var{type}
The @samp{--target2=type} switch overrides the default definition of the
@samp{R_ARM_TARGET2} relocation. Valid values for @samp{type}, their
meanings, and target defaults are as follows:
@table @samp
@item rel
@samp{R_ARM_REL32} (arm*-*-symbianelf, arm*-*-elf, arm*-*-eabi)
@item got-rel
@samp{R_ARM_GOT_PREL} (arm*-*-linux, arm*-*-*bsd)
@end table
@ifclear GENERIC
@lowersections
@end ifclear

11
ld/testsuite/ChangeLog
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@ -1,3 +1,14 @@
2004-09-17 Paul Brook <paul@codesourcery.com>
* ld-arm/arm-target1-{abs,rel}.d}: New files.
* ld-arm/arm-target1.s: New file.
* ld-arm/arm-target2-{,got-}rel.d: New files.
* ld-arm/arm-target2.s: New file.
* ld-arm/arm-rel31.d: New files.
* ld-arm/arm-rel31.s: New files.
* ld-arm/arm.ld: New file.
* ld-arm/arm-elf.exp: Add new tests.
2004-09-07 Hans-Peter Nilsson <hp@axis.com>
* ld-cris/hiddef1.d, ld-cris/hiddef1.s, ld-cris/hidrefgotplt1.s:

15
ld/testsuite/ld-arm/arm-elf.exp
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@ -47,6 +47,21 @@ set armelftests {
{"Non-pcrel function reference" "tmpdir/arm-lib.so" "" {arm-app-abs32.s}
{{objdump -fdw arm-app-abs32.d} {objdump -Rw arm-app-abs32.r}}
"arm-app-abs32"}
{"target1-abs" "-static --target1-abs -T arm.ld" "" {arm-target1.s}
{{objdump -s arm-target1-abs.d}}
"arm-target1-abs"}
{"target1-rel" "-static --target1-rel -T arm.ld" "" {arm-target1.s}
{{objdump -s arm-target1-rel.d}}
"arm-target1-rel"}
{"target2-rel" "-static --target2=rel -T arm.ld" "" {arm-target2.s}
{{objdump -s arm-target2-rel.d}}
"arm-target2-rel"}
{"target2-got-rel" "-static --target2=got-rel -T arm.ld" "" {arm-target2.s}
{{objdump -s arm-target2-got-rel.d}}
"arm-target2-got-rel"}
{"arm-rel31" "-static -T arm.ld" "" {arm-rel31.s}
{{objdump -s arm-rel31.d}}
"arm-rel31"}
}
run_ld_link_tests $armelftests

5
ld/testsuite/ld-arm/arm-rel31.d Normal file
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@ -0,0 +1,5 @@
.*: file format.*
Contents of section .text:
8000 (10000000 fcffff7f 08000080 f4ffffff|00000010 7ffffffc 80000008 fffffff4) .*

11
ld/testsuite/ld-arm/arm-rel31.s Normal file
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@ -0,0 +1,11 @@
# Test the R_ARM_REL31 relocation
.section .before
.global _start
_start:
.text
.rel31 0, foo
.rel31 0, _start
.rel31 1, foo
.rel31 1, _start
.section .after
foo:

5
ld/testsuite/ld-arm/arm-target1-abs.d Normal file
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@ -0,0 +1,5 @@
.*: file format.*
Contents of section .text:
8000 (04800000|00008004) .*

5
ld/testsuite/ld-arm/arm-target1-rel.d Normal file
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@ -0,0 +1,5 @@
.*: file format .*
Contents of section .text:
8000 (04000000|00000004) .*

6
ld/testsuite/ld-arm/arm-target1.s Normal file
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@ -0,0 +1,6 @@
# Test the R_ARM_TARGET1 relocation
.text
.global _start
_start:
.word foo(target1)
foo:

7
ld/testsuite/ld-arm/arm-target2-got-rel.d Normal file
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@ -0,0 +1,7 @@
.*: file format.*
Contents of section .text:
8000 (00100000|00001000) .*
Contents of section .got:
9000 (04800000|00008004) .*

5
ld/testsuite/ld-arm/arm-target2-rel.d Normal file
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@ -0,0 +1,5 @@
.*: file format.*
Contents of section .text:
8000 (04000000|00000004) .*

6
ld/testsuite/ld-arm/arm-target2.s Normal file
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@ -0,0 +1,6 @@
# Test the R_ARM_TARGET2 relocation
.text
.global _start
_start:
.word foo(target2)
foo:

16
ld/testsuite/ld-arm/arm.ld Normal file
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@ -0,0 +1,16 @@
/* Script for ld testsuite */
OUTPUT_ARCH(arm)
ENTRY(_start)
SECTIONS
{
/* Read-only sections, merged into text segment: */
PROVIDE (__executable_start = 0x8000); . = 0x8000;
.text :
{
*(.before)
*(.text)
*(.after)
} =0
. = 0x9000;
.got : { *(.got) *(.got.plt)}
}