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Zack Weinberg fd860eaaa8 Remove __need macros from errno.h (__need_Emath, __need_error_t). 
This is fairly complicated, not because the users of __need_Emath and
__need_error_t have complicated requirements, but because the core
changes had a lot of fallout.

__need_error_t exists for gnulib compatibility in argz.h and argp.h.
error_t itself is a Hurdism, an enum containing all the E-constants,
so you can do 'p (error_t) errno' in gdb and get a symbolic value.
argz.h and argp.h use it for function return values, and they want to
fall back to 'int' when that's not available.  There is no reason why
these nonstandard headers cannot just go ahead and include all of
errno.h; so we do that.

__need_Emath is defined only by .S files; what they _really_ need is
for errno.h to avoid declaring anything other than the E-constants
(e.g. 'extern int __errno_location(void);' is a syntax error in
assembly language). This is replaced with a check for __ASSEMBLER__ in
errno.h, plus a carefully documented requirement for bits/errno.h not
to define anything other than macros.  That in turn has the
consequence that bits/errno.h must not define errno - fortunately, all
live ports use the same definition of errno, so I've moved it to
errno.h.  The Hurd bits/errno.h must also take care not to define
error_t when __ASSEMBLER__ is defined, which involves repeating all of
the definitions twice, but it's a generated file so that's okay.

	* stdlib/errno.h: Remove __need_Emath and __need_error_t logic.
	Reorganize file.  Declare errno here.  When __ASSEMBLER__ is
	defined, don't declare anything other than the E-constants.

	* include/errno.h: Change conditional for exposing internal
	declarations to (not _ISOMAC and not __ASSEMBLER__).
	* bits/errno.h: Remove logic for __need_Emath.  Document
	requirements for a port-specific bits/errno.h.

	* sysdeps/unix/sysv/linux/bits/errno.h
	* sysdeps/unix/sysv/linux/alpha/bits/errno.h
	* sysdeps/unix/sysv/linux/hppa/bits/errno.h
	* sysdeps/unix/sysv/linux/mips/bits/errno.h
	* sysdeps/unix/sysv/linux/sparc/bits/errno.h:
	Add multiple-include guard and check against improper inclusion.
	Remove __need_Emath logic.  Don't declare errno here.  Ensure all
	constants are defined as simple integer literals.  Consistent
	formatting.
	* sysdeps/mach/hurd/errnos.awk: Likewise.  Only define error_t and
	enum __error_t_codes if __ASSEMBLER__ is not defined.
	* sysdeps/mach/hurd/bits/errno.h: Regenerate.

	* argp/argp.h, string/argz.h: Don't define __need_error_t before
	including errno.h.
	* sysdeps/i386/i686/fpu/multiarch/s_cosf-sse2.S
	* sysdeps/i386/i686/fpu/multiarch/s_sincosf-sse2.S
	* sysdeps/i386/i686/fpu/multiarch/s_sinf-sse2.S
	* sysdeps/x86_64/fpu/s_cosf.S
	* sysdeps/x86_64/fpu/s_sincosf.S
	* sysdeps/x86_64/fpu/s_sinf.S:
	Just include errno.h; don't define __need_Emath or include
	bits/errno.h directly.
 		2017-06-14 08:14:34 -04:00
..
bits 2017-06-12 Wilco Dijkstra <wdijkstr@arm.com> 2017-06-12 15:22:17 +01:00
Depend
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Makefile 2017-06-12 Wilco Dijkstra <wdijkstr@arm.com> 2017-06-12 15:22:17 +01:00
Versions New string function explicit_bzero (from OpenBSD). 2016-12-16 16:21:54 -05:00
_strerror.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-addsep.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-append.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-count.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-create.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-ctsep.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-delete.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-extract.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-insert.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-next.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-replace.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz-stringify.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
argz.h Remove __need macros from errno.h (__need_Emath, __need_error_t). 2017-06-14 08:14:34 -04:00
basename.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
bcopy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
bug-envz1.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
bug-strcoll1.c
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bug-strcoll2.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
bug-strncat1.c
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bug-strpbrk1.c
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bug-strspn1.c
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bug-strtok1.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
byteswap.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
bzero.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
endian.h Make endian-conversion macros always return correct types (bug 16458). 2017-01-11 15:28:08 +00:00
envz.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
envz.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
explicit_bzero.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ffs.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ffsll.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
inl-tester.c
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memccpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memchr.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memcmp.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memcpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memfrob.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memmem.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memmove.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memory.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
mempcpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memrchr.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memset.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
noinl-tester.c
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rawmemchr.c Fix rawmemchr build with GCC 8. 2017-05-10 00:25:59 +00:00
stpcpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
stpncpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
str-two-way.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
stratcliff.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
strcasecmp.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcasecmp_l.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcasestr.c Miscellaneous low-risk changes preparing for _ISOMAC testsuite. 2017-03-01 20:32:50 -05:00
strcat.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strchr.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strchrnul.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcmp.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcoll.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcoll_l.c Narrowing the visibility of libc-internal.h even further. 2017-03-01 20:33:46 -05:00
strcpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcspn.c Narrowing the visibility of libc-internal.h even further. 2017-03-01 20:33:46 -05:00
strdup.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strerror.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strerror_l.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strfry.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
string-inlines.c Fix build issue on x86. 2017-06-12 19:59:09 +01:00
string.h 2017-06-12 Wilco Dijkstra <wdijkstr@arm.com> 2017-06-12 15:22:17 +01:00
strings.h Clean up redundancies between string.h and strings.h. 2017-02-16 17:02:50 -05:00
strlen.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strncase.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strncase_l.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strncat.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strncmp.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strncpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strndup.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strnlen.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strpbrk.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strrchr.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strsep.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strsignal.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strspn.c Narrowing the visibility of libc-internal.h even further. 2017-03-01 20:33:46 -05:00
strstr.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strtok.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strtok_r.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strverscmp.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strxfrm.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strxfrm_l.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
swab.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-bcopy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-bzero.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-endian-types.c Make endian-conversion macros always return correct types (bug 16458). 2017-01-11 15:28:08 +00:00
test-explicit_bzero.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-ffs.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-memccpy.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-memchr.c Add memchr tests for n == 0 2017-05-25 11:38:01 -07:00
test-memcmp.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-memcpy.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-memmem.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-memmove.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-mempcpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-memrchr.c Add more tests for memchr 2017-06-08 09:56:01 -07:00
test-memset.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-rawmemchr.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-stpcpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-stpncpy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-strcasecmp.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strcasestr.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strcat.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strchr.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strchrnul.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-strcmp.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strcpy.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strcspn.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-string.h Suppress internal declarations for most of the testsuite. 2017-05-11 19:27:59 -04:00
test-strlen.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strncasecmp.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strncat.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strncmp.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strncpy.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strnlen.c Add page tests to string/test-strnlen. 2017-04-05 10:28:41 -03:00
test-strpbrk.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strrchr.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strspn.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
test-strstr.c Suppress internal declarations for most of the testsuite. 2017-05-11 19:27:59 -04:00
testcopy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tester.c Split DIAG_* macros to new header libc-diag.h. 2017-02-25 09:59:46 -05:00
tst-bswap.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-cmp.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-endian.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-inlcall.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-strcoll-overflow.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-strfry.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-strlen.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-strtok.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-strtok_r.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-strxfrm.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-strxfrm2.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-svc.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-svc.expect
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tst-svc.input
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tst-svc2.c Update string tests to use the support test driver. 2017-03-23 11:32:29 -03:00
tst-xbzero-opt.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
wordcopy.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
xpg-strerror.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00