2019-04-24 05:05:52 +08:00
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/* Error table.
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2022-01-02 06:30:17 +08:00
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Copyright (C) 2019-2022 Free Software Foundation, Inc.
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2019-04-24 05:05:52 +08:00
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This file is part of libctf.
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libctf is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not see
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<http://www.gnu.org/licenses/>. */
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#include <ctf-impl.h>
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libctf: restructure error handling to reduce relocations
Jose Marchesi noted that the traditional-Unix error array in ctf-error.c
introduces one reloc per error to initialize the array: 58 so far. We
can reduce this to zero using an array of carefully-sized individual
members which is used to construct a string table, that is then
referenced by the lookup functions: but doing this automatically is a
pain.
Bruno Haible wrote suitable code years ago: I got permission to reuse it
(Bruno says "... which I hereby put in the public domain"); I modified
it a tiny bit (similarly to what Ulrich Drepper did in the dsohowto
text, but I redid it from scratch), commented it up a bit, and shifted
the error table into that form, migrating it into the new file
ctf-error.h.
This has the advantage that it spotted both typos in the text of the
errors in the comments in ctf-api.h and typos in the error defines in
the comments in ctf-error.c, and places where the two were simply not
in sync. All are now fixed.
One new constant exists in ctf-api.h: CTF_NERR, since the old method of
working out the number of errors in ctf-error.c was no longer usable,
and it seems that the number of CTF errors is something users might
reasonably want as well. It should be pretty easy to keep up to date as
new errors are introduced.
include/
* ctf-api.h (ECTF_*): Improve comments.
(ECTF_NERR): New.
libctf/
* ctf-error.c: Include <stddef.h>, for offsetof.
(_ctf_errlist): Migrate to...
(_ctf_errlist_t): ... this.
(_ctf_erridx): New, indexes into _ctf_errlist_t.
(_ctf_nerr): Remove.
(ctf_errmsg): Adjust accordingly.
* Makefile.am (BUILT_SOURCES): Note...
(ctf-error.h): ... this new rule.
* Makefile.in: Regenerate.
* mkerrors.sed: New, process ctf-api.h to generate ctf-error.h.
* .gitignore: New, ignore ctf-error.h.
2020-06-03 02:07:08 +08:00
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#include <stddef.h>
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2020-06-05 01:07:38 +08:00
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#include <string.h>
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2019-04-24 05:05:52 +08:00
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libctf: restructure error handling to reduce relocations
Jose Marchesi noted that the traditional-Unix error array in ctf-error.c
introduces one reloc per error to initialize the array: 58 so far. We
can reduce this to zero using an array of carefully-sized individual
members which is used to construct a string table, that is then
referenced by the lookup functions: but doing this automatically is a
pain.
Bruno Haible wrote suitable code years ago: I got permission to reuse it
(Bruno says "... which I hereby put in the public domain"); I modified
it a tiny bit (similarly to what Ulrich Drepper did in the dsohowto
text, but I redid it from scratch), commented it up a bit, and shifted
the error table into that form, migrating it into the new file
ctf-error.h.
This has the advantage that it spotted both typos in the text of the
errors in the comments in ctf-api.h and typos in the error defines in
the comments in ctf-error.c, and places where the two were simply not
in sync. All are now fixed.
One new constant exists in ctf-api.h: CTF_NERR, since the old method of
working out the number of errors in ctf-error.c was no longer usable,
and it seems that the number of CTF errors is something users might
reasonably want as well. It should be pretty easy to keep up to date as
new errors are introduced.
include/
* ctf-api.h (ECTF_*): Improve comments.
(ECTF_NERR): New.
libctf/
* ctf-error.c: Include <stddef.h>, for offsetof.
(_ctf_errlist): Migrate to...
(_ctf_errlist_t): ... this.
(_ctf_erridx): New, indexes into _ctf_errlist_t.
(_ctf_nerr): Remove.
(ctf_errmsg): Adjust accordingly.
* Makefile.am (BUILT_SOURCES): Note...
(ctf-error.h): ... this new rule.
* Makefile.in: Regenerate.
* mkerrors.sed: New, process ctf-api.h to generate ctf-error.h.
* .gitignore: New, ignore ctf-error.h.
2020-06-03 02:07:08 +08:00
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/* This construct is due to Bruno Haible: much thanks. */
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/* Give each structure member a unique name. The name does not matter, so we
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2020-10-21 22:54:17 +08:00
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use the enum constant to uniquify them. */
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libctf: restructure error handling to reduce relocations
Jose Marchesi noted that the traditional-Unix error array in ctf-error.c
introduces one reloc per error to initialize the array: 58 so far. We
can reduce this to zero using an array of carefully-sized individual
members which is used to construct a string table, that is then
referenced by the lookup functions: but doing this automatically is a
pain.
Bruno Haible wrote suitable code years ago: I got permission to reuse it
(Bruno says "... which I hereby put in the public domain"); I modified
it a tiny bit (similarly to what Ulrich Drepper did in the dsohowto
text, but I redid it from scratch), commented it up a bit, and shifted
the error table into that form, migrating it into the new file
ctf-error.h.
This has the advantage that it spotted both typos in the text of the
errors in the comments in ctf-api.h and typos in the error defines in
the comments in ctf-error.c, and places where the two were simply not
in sync. All are now fixed.
One new constant exists in ctf-api.h: CTF_NERR, since the old method of
working out the number of errors in ctf-error.c was no longer usable,
and it seems that the number of CTF errors is something users might
reasonably want as well. It should be pretty easy to keep up to date as
new errors are introduced.
include/
* ctf-api.h (ECTF_*): Improve comments.
(ECTF_NERR): New.
libctf/
* ctf-error.c: Include <stddef.h>, for offsetof.
(_ctf_errlist): Migrate to...
(_ctf_errlist_t): ... this.
(_ctf_erridx): New, indexes into _ctf_errlist_t.
(_ctf_nerr): Remove.
(ctf_errmsg): Adjust accordingly.
* Makefile.am (BUILT_SOURCES): Note...
(ctf-error.h): ... this new rule.
* Makefile.in: Regenerate.
* mkerrors.sed: New, process ctf-api.h to generate ctf-error.h.
* .gitignore: New, ignore ctf-error.h.
2020-06-03 02:07:08 +08:00
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2020-10-21 22:54:17 +08:00
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#define ERRSTRFIELD(N) ctf_errstr##N
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/* In this file, we want to treat the first item of the ctf error
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macro like subsequent items. */
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#define _CTF_FIRST(NAME, VALUE) _CTF_ITEM(NAME, VALUE)
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libctf: restructure error handling to reduce relocations
Jose Marchesi noted that the traditional-Unix error array in ctf-error.c
introduces one reloc per error to initialize the array: 58 so far. We
can reduce this to zero using an array of carefully-sized individual
members which is used to construct a string table, that is then
referenced by the lookup functions: but doing this automatically is a
pain.
Bruno Haible wrote suitable code years ago: I got permission to reuse it
(Bruno says "... which I hereby put in the public domain"); I modified
it a tiny bit (similarly to what Ulrich Drepper did in the dsohowto
text, but I redid it from scratch), commented it up a bit, and shifted
the error table into that form, migrating it into the new file
ctf-error.h.
This has the advantage that it spotted both typos in the text of the
errors in the comments in ctf-api.h and typos in the error defines in
the comments in ctf-error.c, and places where the two were simply not
in sync. All are now fixed.
One new constant exists in ctf-api.h: CTF_NERR, since the old method of
working out the number of errors in ctf-error.c was no longer usable,
and it seems that the number of CTF errors is something users might
reasonably want as well. It should be pretty easy to keep up to date as
new errors are introduced.
include/
* ctf-api.h (ECTF_*): Improve comments.
(ECTF_NERR): New.
libctf/
* ctf-error.c: Include <stddef.h>, for offsetof.
(_ctf_errlist): Migrate to...
(_ctf_errlist_t): ... this.
(_ctf_erridx): New, indexes into _ctf_errlist_t.
(_ctf_nerr): Remove.
(ctf_errmsg): Adjust accordingly.
* Makefile.am (BUILT_SOURCES): Note...
(ctf-error.h): ... this new rule.
* Makefile.in: Regenerate.
* mkerrors.sed: New, process ctf-api.h to generate ctf-error.h.
* .gitignore: New, ignore ctf-error.h.
2020-06-03 02:07:08 +08:00
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/* The error message strings, each in a unique structure member precisely big
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enough for that error, plus a str member to access them all as a string
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table. */
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static const union _ctf_errlist_t
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{
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__extension__ struct
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{
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2020-10-21 22:54:17 +08:00
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#define _CTF_ITEM(n, s) char ERRSTRFIELD (n) [sizeof (s)];
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_CTF_ERRORS
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#undef _CTF_ITEM
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libctf: restructure error handling to reduce relocations
Jose Marchesi noted that the traditional-Unix error array in ctf-error.c
introduces one reloc per error to initialize the array: 58 so far. We
can reduce this to zero using an array of carefully-sized individual
members which is used to construct a string table, that is then
referenced by the lookup functions: but doing this automatically is a
pain.
Bruno Haible wrote suitable code years ago: I got permission to reuse it
(Bruno says "... which I hereby put in the public domain"); I modified
it a tiny bit (similarly to what Ulrich Drepper did in the dsohowto
text, but I redid it from scratch), commented it up a bit, and shifted
the error table into that form, migrating it into the new file
ctf-error.h.
This has the advantage that it spotted both typos in the text of the
errors in the comments in ctf-api.h and typos in the error defines in
the comments in ctf-error.c, and places where the two were simply not
in sync. All are now fixed.
One new constant exists in ctf-api.h: CTF_NERR, since the old method of
working out the number of errors in ctf-error.c was no longer usable,
and it seems that the number of CTF errors is something users might
reasonably want as well. It should be pretty easy to keep up to date as
new errors are introduced.
include/
* ctf-api.h (ECTF_*): Improve comments.
(ECTF_NERR): New.
libctf/
* ctf-error.c: Include <stddef.h>, for offsetof.
(_ctf_errlist): Migrate to...
(_ctf_errlist_t): ... this.
(_ctf_erridx): New, indexes into _ctf_errlist_t.
(_ctf_nerr): Remove.
(ctf_errmsg): Adjust accordingly.
* Makefile.am (BUILT_SOURCES): Note...
(ctf-error.h): ... this new rule.
* Makefile.in: Regenerate.
* mkerrors.sed: New, process ctf-api.h to generate ctf-error.h.
* .gitignore: New, ignore ctf-error.h.
2020-06-03 02:07:08 +08:00
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};
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char str[1];
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} _ctf_errlist =
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{
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{
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2020-10-21 22:54:17 +08:00
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#define _CTF_ITEM(n, s) N_(s),
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_CTF_ERRORS
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#undef _CTF_ITEM
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libctf: restructure error handling to reduce relocations
Jose Marchesi noted that the traditional-Unix error array in ctf-error.c
introduces one reloc per error to initialize the array: 58 so far. We
can reduce this to zero using an array of carefully-sized individual
members which is used to construct a string table, that is then
referenced by the lookup functions: but doing this automatically is a
pain.
Bruno Haible wrote suitable code years ago: I got permission to reuse it
(Bruno says "... which I hereby put in the public domain"); I modified
it a tiny bit (similarly to what Ulrich Drepper did in the dsohowto
text, but I redid it from scratch), commented it up a bit, and shifted
the error table into that form, migrating it into the new file
ctf-error.h.
This has the advantage that it spotted both typos in the text of the
errors in the comments in ctf-api.h and typos in the error defines in
the comments in ctf-error.c, and places where the two were simply not
in sync. All are now fixed.
One new constant exists in ctf-api.h: CTF_NERR, since the old method of
working out the number of errors in ctf-error.c was no longer usable,
and it seems that the number of CTF errors is something users might
reasonably want as well. It should be pretty easy to keep up to date as
new errors are introduced.
include/
* ctf-api.h (ECTF_*): Improve comments.
(ECTF_NERR): New.
libctf/
* ctf-error.c: Include <stddef.h>, for offsetof.
(_ctf_errlist): Migrate to...
(_ctf_errlist_t): ... this.
(_ctf_erridx): New, indexes into _ctf_errlist_t.
(_ctf_nerr): Remove.
(ctf_errmsg): Adjust accordingly.
* Makefile.am (BUILT_SOURCES): Note...
(ctf-error.h): ... this new rule.
* Makefile.in: Regenerate.
* mkerrors.sed: New, process ctf-api.h to generate ctf-error.h.
* .gitignore: New, ignore ctf-error.h.
2020-06-03 02:07:08 +08:00
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}
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};
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/* Offsets to each member in the string table, computed using offsetof. */
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static const unsigned int _ctf_erridx[] =
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{
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2020-10-21 22:54:17 +08:00
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#define _CTF_ITEM(n, s) [n - ECTF_BASE] = offsetof (union _ctf_errlist_t, ERRSTRFIELD (n)),
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_CTF_ERRORS
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#undef _CTF_ITEM
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libctf: restructure error handling to reduce relocations
Jose Marchesi noted that the traditional-Unix error array in ctf-error.c
introduces one reloc per error to initialize the array: 58 so far. We
can reduce this to zero using an array of carefully-sized individual
members which is used to construct a string table, that is then
referenced by the lookup functions: but doing this automatically is a
pain.
Bruno Haible wrote suitable code years ago: I got permission to reuse it
(Bruno says "... which I hereby put in the public domain"); I modified
it a tiny bit (similarly to what Ulrich Drepper did in the dsohowto
text, but I redid it from scratch), commented it up a bit, and shifted
the error table into that form, migrating it into the new file
ctf-error.h.
This has the advantage that it spotted both typos in the text of the
errors in the comments in ctf-api.h and typos in the error defines in
the comments in ctf-error.c, and places where the two were simply not
in sync. All are now fixed.
One new constant exists in ctf-api.h: CTF_NERR, since the old method of
working out the number of errors in ctf-error.c was no longer usable,
and it seems that the number of CTF errors is something users might
reasonably want as well. It should be pretty easy to keep up to date as
new errors are introduced.
include/
* ctf-api.h (ECTF_*): Improve comments.
(ECTF_NERR): New.
libctf/
* ctf-error.c: Include <stddef.h>, for offsetof.
(_ctf_errlist): Migrate to...
(_ctf_errlist_t): ... this.
(_ctf_erridx): New, indexes into _ctf_errlist_t.
(_ctf_nerr): Remove.
(ctf_errmsg): Adjust accordingly.
* Makefile.am (BUILT_SOURCES): Note...
(ctf-error.h): ... this new rule.
* Makefile.in: Regenerate.
* mkerrors.sed: New, process ctf-api.h to generate ctf-error.h.
* .gitignore: New, ignore ctf-error.h.
2020-06-03 02:07:08 +08:00
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};
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2019-04-24 05:05:52 +08:00
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const char *
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ctf_errmsg (int error)
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{
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const char *str;
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libctf: restructure error handling to reduce relocations
Jose Marchesi noted that the traditional-Unix error array in ctf-error.c
introduces one reloc per error to initialize the array: 58 so far. We
can reduce this to zero using an array of carefully-sized individual
members which is used to construct a string table, that is then
referenced by the lookup functions: but doing this automatically is a
pain.
Bruno Haible wrote suitable code years ago: I got permission to reuse it
(Bruno says "... which I hereby put in the public domain"); I modified
it a tiny bit (similarly to what Ulrich Drepper did in the dsohowto
text, but I redid it from scratch), commented it up a bit, and shifted
the error table into that form, migrating it into the new file
ctf-error.h.
This has the advantage that it spotted both typos in the text of the
errors in the comments in ctf-api.h and typos in the error defines in
the comments in ctf-error.c, and places where the two were simply not
in sync. All are now fixed.
One new constant exists in ctf-api.h: CTF_NERR, since the old method of
working out the number of errors in ctf-error.c was no longer usable,
and it seems that the number of CTF errors is something users might
reasonably want as well. It should be pretty easy to keep up to date as
new errors are introduced.
include/
* ctf-api.h (ECTF_*): Improve comments.
(ECTF_NERR): New.
libctf/
* ctf-error.c: Include <stddef.h>, for offsetof.
(_ctf_errlist): Migrate to...
(_ctf_errlist_t): ... this.
(_ctf_erridx): New, indexes into _ctf_errlist_t.
(_ctf_nerr): Remove.
(ctf_errmsg): Adjust accordingly.
* Makefile.am (BUILT_SOURCES): Note...
(ctf-error.h): ... this new rule.
* Makefile.in: Regenerate.
* mkerrors.sed: New, process ctf-api.h to generate ctf-error.h.
* .gitignore: New, ignore ctf-error.h.
2020-06-03 02:07:08 +08:00
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if (error >= ECTF_BASE && (error - ECTF_BASE) < ECTF_NERR)
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str = _ctf_errlist.str + _ctf_erridx[error - ECTF_BASE];
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2019-04-24 05:05:52 +08:00
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else
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2020-06-05 01:07:38 +08:00
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str = (const char *) strerror (error);
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2019-04-24 05:05:52 +08:00
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2020-07-31 00:43:12 +08:00
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return (str ? gettext (str) : _("Unknown error"));
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2019-04-24 05:05:52 +08:00
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}
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int
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libctf, include, binutils, gdb, ld: rename ctf_file_t to ctf_dict_t
The naming of the ctf_file_t type in libctf is a historical curiosity.
Back in the Solaris days, CTF dictionaries were originally generated as
a separate file and then (sometimes) merged into objects: hence the
datatype was named ctf_file_t, and known as a "CTF file". Nowadays, raw
CTF is essentially never written to a file on its own, and the datatype
changed name to a "CTF dictionary" years ago. So the term "CTF file"
refers to something that is never a file! This is at best confusing.
The type has also historically been known as a 'CTF container", which is
even more confusing now that we have CTF archives which are *also* a
sort of container (they contain CTF dictionaries), but which are never
referred to as containers in the source code.
So fix this by completing the renaming, renaming ctf_file_t to
ctf_dict_t throughout, and renaming those few functions that refer to
CTF files by name (keeping compatibility aliases) to refer to dicts
instead. Old users who still refer to ctf_file_t will see (harmless)
pointer-compatibility warnings at compile time, but the ABI is unchanged
(since C doesn't mangle names, and ctf_file_t was always an opaque type)
and things will still compile fine as long as -Werror is not specified.
All references to CTF containers and CTF files in the source code are
fixed to refer to CTF dicts instead.
Further (smaller) renamings of annoyingly-named functions to come, as
part of the process of souping up queries across whole archives at once
(needed for the function info and data object sections).
binutils/ChangeLog
2020-11-20 Nick Alcock <nick.alcock@oracle.com>
* objdump.c (dump_ctf_errs): Rename ctf_file_t to ctf_dict_t.
(dump_ctf_archive_member): Likewise.
(dump_ctf): Likewise. Use ctf_dict_close, not ctf_file_close.
* readelf.c (dump_ctf_errs): Rename ctf_file_t to ctf_dict_t.
(dump_ctf_archive_member): Likewise.
(dump_section_as_ctf): Likewise. Use ctf_dict_close, not
ctf_file_close.
gdb/ChangeLog
2020-11-20 Nick Alcock <nick.alcock@oracle.com>
* ctfread.c: Change uses of ctf_file_t to ctf_dict_t.
(ctf_fp_info::~ctf_fp_info): Call ctf_dict_close, not ctf_file_close.
include/ChangeLog
2020-11-20 Nick Alcock <nick.alcock@oracle.com>
* ctf-api.h (ctf_file_t): Rename to...
(ctf_dict_t): ... this. Keep ctf_file_t around for compatibility.
(struct ctf_file): Likewise rename to...
(struct ctf_dict): ... this.
(ctf_file_close): Rename to...
(ctf_dict_close): ... this, keeping compatibility function.
(ctf_parent_file): Rename to...
(ctf_parent_dict): ... this, keeping compatibility function.
All callers adjusted.
* ctf.h: Rename references to ctf_file_t to ctf_dict_t.
(struct ctf_archive) <ctfa_nfiles>: Rename to...
<ctfa_ndicts>: ... this.
ld/ChangeLog
2020-11-20 Nick Alcock <nick.alcock@oracle.com>
* ldlang.c (ctf_output): This is a ctf_dict_t now.
(lang_ctf_errs_warnings): Rename ctf_file_t to ctf_dict_t.
(ldlang_open_ctf): Adjust comment.
(lang_merge_ctf): Use ctf_dict_close, not ctf_file_close.
* ldelfgen.h (ldelf_examine_strtab_for_ctf): Rename ctf_file_t to
ctf_dict_t. Change opaque declaration accordingly.
* ldelfgen.c (ldelf_examine_strtab_for_ctf): Adjust.
* ldemul.h (examine_strtab_for_ctf): Likewise.
(ldemul_examine_strtab_for_ctf): Likewise.
* ldeuml.c (ldemul_examine_strtab_for_ctf): Likewise.
libctf/ChangeLog
2020-11-20 Nick Alcock <nick.alcock@oracle.com>
* ctf-impl.h: Rename ctf_file_t to ctf_dict_t: all declarations
adjusted.
(ctf_fileops): Rename to...
(ctf_dictops): ... this.
(ctf_dedup_t) <cd_id_to_file_t>: Rename to...
<cd_id_to_dict_t>: ... this.
(ctf_file_t): Fix outdated comment.
<ctf_fileops>: Rename to...
<ctf_dictops>: ... this.
(struct ctf_archive_internal) <ctfi_file>: Rename to...
<ctfi_dict>: ... this.
* ctf-archive.c: Rename ctf_file_t to ctf_dict_t.
Rename ctf_archive.ctfa_nfiles to ctfa_ndicts.
Rename ctf_file_close to ctf_dict_close. All users adjusted.
* ctf-create.c: Likewise. Refer to CTF dicts, not CTF containers.
(ctf_bundle_t) <ctb_file>: Rename to...
<ctb_dict): ... this.
* ctf-decl.c: Rename ctf_file_t to ctf_dict_t.
* ctf-dedup.c: Likewise. Rename ctf_file_close to
ctf_dict_close. Refer to CTF dicts, not CTF containers.
* ctf-dump.c: Likewise.
* ctf-error.c: Likewise.
* ctf-hash.c: Likewise.
* ctf-inlines.h: Likewise.
* ctf-labels.c: Likewise.
* ctf-link.c: Likewise.
* ctf-lookup.c: Likewise.
* ctf-open-bfd.c: Likewise.
* ctf-string.c: Likewise.
* ctf-subr.c: Likewise.
* ctf-types.c: Likewise.
* ctf-util.c: Likewise.
* ctf-open.c: Likewise.
(ctf_file_close): Rename to...
(ctf_dict_close): ...this.
(ctf_file_close): New trivial wrapper around ctf_dict_close, for
compatibility.
(ctf_parent_file): Rename to...
(ctf_parent_dict): ... this.
(ctf_parent_file): New trivial wrapper around ctf_parent_dict, for
compatibility.
* libctf.ver: Add ctf_dict_close and ctf_parent_dict.
2020-11-20 21:34:04 +08:00
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ctf_errno (ctf_dict_t * fp)
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2019-04-24 05:05:52 +08:00
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{
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return fp->ctf_errno;
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}
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