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| author | Hans-Peter Nilsson <hp@axis.com> | 2002-02-01 08:24:03 +0000 |
|---|---|---|
| committer | Hans-Peter Nilsson <hp@axis.com> | 2002-02-01 08:24:03 +0000 |
| commit | 48fa4a5def1116273c2c2a236939e96eb9b6231a (patch) | |
| tree | b8597630be4f09f870fede949598daddae5d1d15 /ld/emultempl/mmo.em | |
| parent | 930b4cb2c2da2be8643a1e79fe09fe7328544d32 (diff) | |
| download | gdb-48fa4a5def1116273c2c2a236939e96eb9b6231a.zip gdb-48fa4a5def1116273c2c2a236939e96eb9b6231a.tar.gz gdb-48fa4a5def1116273c2c2a236939e96eb9b6231a.tar.bz2 | |
Support on-demand global register allocation from
R_MMIX_BASE_PLUS_OFFSET relocs.
* emultempl/mmix-elfnmmo.em (mmix_after_allocation): Rename from
mmix_set_reg_section_vma. Call
_bfd_mmix_finalize_linker_allocated_gregs.
(mmix_before_allocation): New function.
(LDEMUL_AFTER_ALLOCATION): Set to mmix_after_allocation.
(LDEMUL_BEFORE_ALLOCATION): Define to mmix_before_allocation.
* scripttempl/mmo.sc (.text): Mark .init, .fini as KEEP.
(.MMIX.reg_contents): Add .MMIX.reg_contents.linker_allocated
before .MMIX.reg_contents.
* emultempl/mmo.em (gldmmo_before_allocation): Define to default.
(mmo_after_open): New function.
(LDEMUL_AFTER_OPEN): Define to mmo_after_open.
* emulparams/elf64mmix.sh (OTHER_SECTIONS): Tweak formatting. Add
.MMIX.reg_contents.linker_allocated before .MMIX.reg_contents.
Diffstat (limited to 'ld/emultempl/mmo.em')
| -rw-r--r-- | ld/emultempl/mmo.em | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/ld/emultempl/mmo.em b/ld/emultempl/mmo.em index 8fed0f6..1a3941d 100644 --- a/ld/emultempl/mmo.em +++ b/ld/emultempl/mmo.em @@ -1,5 +1,5 @@ # This shell script emits a C file. -*- C -*- -# Copyright 2001 Free Software Foundation, Inc. +# Copyright 2001, 2002 Free Software Foundation, Inc. # # This file is part of GLD, the Gnu Linker. # @@ -21,6 +21,13 @@ # This file is sourced from elf32.em and mmo.em, used to define # linker MMIX-specifics common to ELF and MMO. +cat >>e${EMULATION_NAME}.c <<EOF +/* Need to have this define before mmix-elfnmmo, which includes + needrelax.em which uses this name for the before_allocation function, + normally defined in elf32.em. */ +#define gldmmo_before_allocation before_allocation_default +EOF + . ${srcdir}/emultempl/mmix-elfnmmo.em cat >>e${EMULATION_NAME}.c <<EOF @@ -31,6 +38,7 @@ static asection *output_prev_sec_find PARAMS ((lang_output_section_statement_type *)); static void mmo_finish PARAMS ((void)); static void mmo_wipe_sec_reloc_flag PARAMS ((bfd *, asection *, PTR)); +static void mmo_after_open PARAMS ((void)); /* Find the last output section before given output statement. Used by place_orphan. */ @@ -220,8 +228,26 @@ mmo_finish () { bfd_map_over_sections (output_bfd, mmo_wipe_sec_reloc_flag, NULL); } + +/* To get on-demand global register allocation right, we need to parse the + relocs, like what happens when linking to ELF. It needs to be done + before all input sections are supposed to be present. When linking to + ELF, it's done when reading symbols. When linking to mmo, we do it + when all input files are seen, which is equivalent. */ +static void +mmo_after_open () +{ + LANG_FOR_EACH_INPUT_STATEMENT (is) + { + if (bfd_get_flavour (is->the_bfd) == bfd_target_elf_flavour + && !_bfd_mmix_check_all_relocs (is->the_bfd, &link_info)) + einfo ("%X%P: Internal problems scanning %B after opening it", + is->the_bfd); + } +} EOF LDEMUL_PLACE_ORPHAN=mmo_place_orphan LDEMUL_FINISH=mmo_finish +LDEMUL_AFTER_OPEN=mmo_after_open |