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| author | Alan Modra <amodra@gmail.com> | 2020-08-12 23:31:28 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-08-13 08:10:18 +0930 |
| commit | 6738c8a7c93cd77a0caa720c6cc21c422561be2c (patch) | |
| tree | fbb7e126a4d5a43d2292ecd1faafb1a781d08dde /ld/emultempl | |
| parent | 75e100a30d5dfdd3ac2b0391c17173645fc77633 (diff) | |
| download | gdb-6738c8a7c93cd77a0caa720c6cc21c422561be2c.zip gdb-6738c8a7c93cd77a0caa720c6cc21c422561be2c.tar.gz gdb-6738c8a7c93cd77a0caa720c6cc21c422561be2c.tar.bz2 | |
PowerPC64 --no-pcrel-optimize
This new option effectively ignores R_PPC64_PCREL_OPT, disabling the
optimization of instructions marked by that relocation. The patch
also disables GOT indirect to GOT/TOC pointer relative code editing
when --no-toc-optimize.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Add no_pcrel_opt.
* elf64-ppc.c (ppc64_elf_relocate_section): Disable GOT reloc
optimizations when --no-toc-optimize. Disable R_PPC64_PCREL_OPT
optimization when --no-pcrel-optimize.
ld/
* emultempl/ppc64elf.em (params): Init new field.
(enum ppc64_opt): Add OPTION_NO_PCREL_OPT.
(PARSE_AND_LIST_LONGOPTS, PARSE_AND_LIST_OPTIONS),
(PARSE_AND_LIST_ARGS_CASES): Support --no-pcrel-optimize.
Diffstat (limited to 'ld/emultempl')
| -rw-r--r-- | ld/emultempl/ppc64elf.em | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/ld/emultempl/ppc64elf.em b/ld/emultempl/ppc64elf.em index 1331d03..42b9bd4 100644 --- a/ld/emultempl/ppc64elf.em +++ b/ld/emultempl/ppc64elf.em @@ -38,7 +38,7 @@ static struct ppc64_elf_params params = { NULL, &ppc_layout_sections_again, 1, -1, -1, 0, ${DEFAULT_PLT_STATIC_CHAIN-0}, -1, 5, - -1, -1, 0, -1, -1, 0}; + -1, -1, 0, 0, -1, -1, 0}; /* Fake input file for stubs. */ static lang_input_statement_type *stub_file; @@ -686,6 +686,7 @@ enum ppc64_opt OPTION_NO_PLT_LOCALENTRY, OPTION_POWER10_STUBS, OPTION_NO_POWER10_STUBS, + OPTION_NO_PCREL_OPT, OPTION_STUBSYMS, OPTION_NO_STUBSYMS, OPTION_SAVRES, @@ -717,6 +718,7 @@ PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}' { "plt-localentry", optional_argument, NULL, OPTION_PLT_LOCALENTRY }, { "no-plt-localentry", no_argument, NULL, OPTION_NO_PLT_LOCALENTRY }, { "power10-stubs", optional_argument, NULL, OPTION_POWER10_STUBS }, + { "no-pcrel-optimize", no_argument, NULL, OPTION_NO_PCREL_OPT }, { "no-power10-stubs", no_argument, NULL, OPTION_NO_POWER10_STUBS }, { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS }, { "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS }, @@ -776,6 +778,9 @@ PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_OPTIONS}' --power10-stubs [=auto] Use Power10 PLT call stubs (default auto)\n" )); fprintf (file, _("\ + --no-pcrel-optimize Don'\''t perform R_PPC64_PCREL_OPT optimization\n" + )); + fprintf (file, _("\ --no-power10-stubs Don'\''t use Power10 PLT call stubs\n" )); fprintf (file, _("\ @@ -909,6 +914,10 @@ PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}' params.power10_stubs = 0; break; + case OPTION_NO_PCREL_OPT: + params.no_pcrel_opt = 1; + break; + case OPTION_STUBSYMS: params.emit_stub_syms = 1; break; @@ -985,6 +994,7 @@ PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}' params.no_multi_toc = 1; no_toc_sort = 1; params.plt_static_chain = 1; + params.no_pcrel_opt = 1; return FALSE; ' |