From 3674e28ad07f67fd87b8d04cb36d27b0b7f75d65 Mon Sep 17 00:00:00 2001 From: Paul Brook Date: Fri, 17 Sep 2004 12:18:19 +0000 Subject: [PATCH] bfd/ * 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. --- ld/ChangeLog | 17 +++++++++++++++++ ld/emulparams/armelf_fbsd.sh | 1 + ld/emulparams/armelf_linux.sh | 1 + ld/emulparams/armelf_nbsd.sh | 1 + ld/emultempl/armelf.em | 25 +++++++++++++++++++++---- ld/emultempl/armelf_oabi.em | 2 +- ld/ld.texinfo | 22 +++++++++++++++++++++- ld/testsuite/ChangeLog | 11 +++++++++++ ld/testsuite/ld-arm/arm-elf.exp | 15 +++++++++++++++ ld/testsuite/ld-arm/arm-rel31.d | 5 +++++ ld/testsuite/ld-arm/arm-rel31.s | 11 +++++++++++ ld/testsuite/ld-arm/arm-target1-abs.d | 5 +++++ ld/testsuite/ld-arm/arm-target1-rel.d | 5 +++++ ld/testsuite/ld-arm/arm-target1.s | 6 ++++++ ld/testsuite/ld-arm/arm-target2-got-rel.d | 7 +++++++ ld/testsuite/ld-arm/arm-target2-rel.d | 5 +++++ ld/testsuite/ld-arm/arm-target2.s | 6 ++++++ ld/testsuite/ld-arm/arm.ld | 16 ++++++++++++++++ 18 files changed, 155 insertions(+), 6 deletions(-) create mode 100644 ld/testsuite/ld-arm/arm-rel31.d create mode 100644 ld/testsuite/ld-arm/arm-rel31.s create mode 100644 ld/testsuite/ld-arm/arm-target1-abs.d create mode 100644 ld/testsuite/ld-arm/arm-target1-rel.d create mode 100644 ld/testsuite/ld-arm/arm-target1.s create mode 100644 ld/testsuite/ld-arm/arm-target2-got-rel.d create mode 100644 ld/testsuite/ld-arm/arm-target2-rel.d create mode 100644 ld/testsuite/ld-arm/arm-target2.s create mode 100644 ld/testsuite/ld-arm/arm.ld diff --git a/ld/ChangeLog b/ld/ChangeLog index 6caf17b..a267b23 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,20 @@ +2004-09-17 Paul Brook + + * 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 * ldexp.c (fold_name): Update u.undef.next refs. diff --git a/ld/emulparams/armelf_fbsd.sh b/ld/emulparams/armelf_fbsd.sh index 52da345..ee9520d 100644 --- a/ld/emulparams/armelf_fbsd.sh +++ b/ld/emulparams/armelf_fbsd.sh @@ -1,2 +1,3 @@ . ${srcdir}/emulparams/armelf.sh . ${srcdir}/emulparams/elf_fbsd.sh +TARGET2_TYPE=got-rel diff --git a/ld/emulparams/armelf_linux.sh b/ld/emulparams/armelf_linux.sh index 88a2d19..60df081 100644 --- a/ld/emulparams/armelf_linux.sh +++ b/ld/emulparams/armelf_linux.sh @@ -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 diff --git a/ld/emulparams/armelf_nbsd.sh b/ld/emulparams/armelf_nbsd.sh index 571483c..3d94839 100644 --- a/ld/emulparams/armelf_nbsd.sh +++ b/ld/emulparams/armelf_nbsd.sh @@ -1,6 +1,7 @@ . ${srcdir}/emulparams/armelf.sh MAXPAGESIZE=0x8000 TEXT_START_ADDR=0x00008000 +TARGET2_TYPE=got-rel unset STACK_ADDR unset EMBEDDED diff --git a/ld/emultempl/armelf.em b/ld/emultempl/armelf.em index 6a690f8..54af832 100644 --- a/ld/emultempl/armelf.em +++ b/ld/emultempl/armelf.em @@ -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 <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= Set the entry point to be Thumb symbol \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= 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"${EMULATION_NAME}"_before_parse diff --git a/ld/emultempl/armelf_oabi.em b/ld/emultempl/armelf_oabi.em index 64f908a..a9b053b 100644 --- a/ld/emultempl/armelf_oabi.em +++ b/ld/emultempl/armelf_oabi.em @@ -69,7 +69,7 @@ gld${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); diff --git a/ld/ld.texinfo b/ld/ld.texinfo index 3a64bc2..8acc3c4 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -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 diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog index 4772ab5..bc25d1c 100644 --- a/ld/testsuite/ChangeLog +++ b/ld/testsuite/ChangeLog @@ -1,3 +1,14 @@ +2004-09-17 Paul Brook + + * 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 * ld-cris/hiddef1.d, ld-cris/hiddef1.s, ld-cris/hidrefgotplt1.s: diff --git a/ld/testsuite/ld-arm/arm-elf.exp b/ld/testsuite/ld-arm/arm-elf.exp index 2f32a11..17fb089 100644 --- a/ld/testsuite/ld-arm/arm-elf.exp +++ b/ld/testsuite/ld-arm/arm-elf.exp @@ -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 diff --git a/ld/testsuite/ld-arm/arm-rel31.d b/ld/testsuite/ld-arm/arm-rel31.d new file mode 100644 index 0000000..1ab6839 --- /dev/null +++ b/ld/testsuite/ld-arm/arm-rel31.d @@ -0,0 +1,5 @@ + +.*: file format.* + +Contents of section .text: + 8000 (10000000 fcffff7f 08000080 f4ffffff|00000010 7ffffffc 80000008 fffffff4) .* diff --git a/ld/testsuite/ld-arm/arm-rel31.s b/ld/testsuite/ld-arm/arm-rel31.s new file mode 100644 index 0000000..37eee66 --- /dev/null +++ b/ld/testsuite/ld-arm/arm-rel31.s @@ -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: diff --git a/ld/testsuite/ld-arm/arm-target1-abs.d b/ld/testsuite/ld-arm/arm-target1-abs.d new file mode 100644 index 0000000..81cc9cc --- /dev/null +++ b/ld/testsuite/ld-arm/arm-target1-abs.d @@ -0,0 +1,5 @@ + +.*: file format.* + +Contents of section .text: + 8000 (04800000|00008004) .* diff --git a/ld/testsuite/ld-arm/arm-target1-rel.d b/ld/testsuite/ld-arm/arm-target1-rel.d new file mode 100644 index 0000000..2d10dee --- /dev/null +++ b/ld/testsuite/ld-arm/arm-target1-rel.d @@ -0,0 +1,5 @@ + +.*: file format .* + +Contents of section .text: + 8000 (04000000|00000004) .* diff --git a/ld/testsuite/ld-arm/arm-target1.s b/ld/testsuite/ld-arm/arm-target1.s new file mode 100644 index 0000000..5a7ba91 --- /dev/null +++ b/ld/testsuite/ld-arm/arm-target1.s @@ -0,0 +1,6 @@ +# Test the R_ARM_TARGET1 relocation + .text + .global _start +_start: + .word foo(target1) +foo: diff --git a/ld/testsuite/ld-arm/arm-target2-got-rel.d b/ld/testsuite/ld-arm/arm-target2-got-rel.d new file mode 100644 index 0000000..089c061 --- /dev/null +++ b/ld/testsuite/ld-arm/arm-target2-got-rel.d @@ -0,0 +1,7 @@ + +.*: file format.* + +Contents of section .text: + 8000 (00100000|00001000) .* +Contents of section .got: + 9000 (04800000|00008004) .* diff --git a/ld/testsuite/ld-arm/arm-target2-rel.d b/ld/testsuite/ld-arm/arm-target2-rel.d new file mode 100644 index 0000000..4913e07 --- /dev/null +++ b/ld/testsuite/ld-arm/arm-target2-rel.d @@ -0,0 +1,5 @@ + +.*: file format.* + +Contents of section .text: + 8000 (04000000|00000004) .* diff --git a/ld/testsuite/ld-arm/arm-target2.s b/ld/testsuite/ld-arm/arm-target2.s new file mode 100644 index 0000000..0c343ef --- /dev/null +++ b/ld/testsuite/ld-arm/arm-target2.s @@ -0,0 +1,6 @@ +# Test the R_ARM_TARGET2 relocation + .text + .global _start +_start: + .word foo(target2) +foo: diff --git a/ld/testsuite/ld-arm/arm.ld b/ld/testsuite/ld-arm/arm.ld new file mode 100644 index 0000000..23d914b --- /dev/null +++ b/ld/testsuite/ld-arm/arm.ld @@ -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)} +} -- 2.7.4