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authorGabriel F. T. Gomes <gabrielftg@linux.ibm.com>2019-12-19 12:06:09 -0300
committerPaul E. Murphy <murphyp@linux.vnet.ibm.com>2020-02-17 15:28:29 -0600
commite4a399921390509418826e8e8995d2441f29e243 (patch)
treecc9f1df5edb43ade00aa12cc1ba1c5a662e5f1c8 /wcsmbs
parent1f1c65e232878bca88fe8551318c7bc02b90ee90 (diff)
downloadglibc-e4a399921390509418826e8e8995d2441f29e243.zip
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Prepare redirections for IEEE long double on powerpc64le
All functions that have a format string, which can consume a long double argument, must have one version for each long double format supported on a platform. On powerpc64le, these functions currently have two versions (i.e.: long double with the same format as double, and long double with IBM Extended Precision format). Support for a third long double format option (i.e. long double with IEEE long double format) is being prepared and all the aforementioned functions now have a third version (not yet exported on the master branch, but the code is in). For these functions to get selected (during build time), references to them in user programs (or dependent libraries) must get redirected to the aforementioned new versions of the functions. This patch installs the header magic required to perform such redirections. Notice, however, that since the redirections only happen when __LONG_DOUBLE_USES_FLOAT128 is set to 1, and no platform (including powerpc64le) currently does it, no redirections actually happen. Redirections and the exporting of the new functions will happen at the same time (when powerpc64le adds ldbl-128ibm-compat to their Implies. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> Reviewed-by: Paul E. Murphy <murphyp@linux.vnet.ibm.com>
Diffstat (limited to 'wcsmbs')
-rw-r--r--wcsmbs/bits/wchar-ldbl.h36
-rw-r--r--wcsmbs/wchar.h14
2 files changed, 39 insertions, 11 deletions
diff --git a/wcsmbs/bits/wchar-ldbl.h b/wcsmbs/bits/wchar-ldbl.h
index fc50ee2..75d547f 100644
--- a/wcsmbs/bits/wchar-ldbl.h
+++ b/wcsmbs/bits/wchar-ldbl.h
@@ -28,9 +28,17 @@ __LDBL_REDIR_DECL (vfwprintf);
__LDBL_REDIR_DECL (vwprintf);
__LDBL_REDIR_DECL (vswprintf);
# if !__GLIBC_USE (DEPRECATED_SCANF)
+# if defined __LDBL_COMPAT
__LDBL_REDIR1_DECL (fwscanf, __nldbl___isoc99_fwscanf)
__LDBL_REDIR1_DECL (wscanf, __nldbl___isoc99_wscanf)
__LDBL_REDIR1_DECL (swscanf, __nldbl___isoc99_swscanf)
+# elif __LONG_DOUBLE_USES_FLOAT128 == 1
+__LDBL_REDIR1_DECL (fwscanf, __isoc99_fwscanfieee128)
+__LDBL_REDIR1_DECL (wscanf, __isoc99_wscanfieee128)
+__LDBL_REDIR1_DECL (swscanf, __isoc99_swscanfieee128)
+# else
+# error bits/stdlib-ldbl.h included when no ldbl redirections are required.
+# endif
# else
__LDBL_REDIR_DECL (fwscanf);
__LDBL_REDIR_DECL (wscanf);
@@ -39,11 +47,23 @@ __LDBL_REDIR_DECL (swscanf);
#endif
#ifdef __USE_ISOC99
+# ifdef __LDBL_COMPAT
__LDBL_REDIR1_DECL (wcstold, wcstod);
+# else
+__LDBL_REDIR1_DECL (wcstold, __wcstoieee128)
+# endif
# if !__GLIBC_USE (DEPRECATED_SCANF)
+# if defined __LDBL_COMPAT
__LDBL_REDIR1_DECL (vfwscanf, __nldbl___isoc99_vfwscanf)
__LDBL_REDIR1_DECL (vwscanf, __nldbl___isoc99_vwscanf)
__LDBL_REDIR1_DECL (vswscanf, __nldbl___isoc99_vswscanf)
+# elif __LONG_DOUBLE_USES_FLOAT128 == 1
+__LDBL_REDIR1_DECL (vfwscanf, __isoc99_vfwscanfieee128)
+__LDBL_REDIR1_DECL (vwscanf, __isoc99_vwscanfieee128)
+__LDBL_REDIR1_DECL (vswscanf, __isoc99_vswscanfieee128)
+# else
+# error bits/stdlib-ldbl.h included when no ldbl redirections are required.
+# endif
# else
__LDBL_REDIR_DECL (vfwscanf);
__LDBL_REDIR_DECL (vwscanf);
@@ -52,16 +72,20 @@ __LDBL_REDIR_DECL (vswscanf);
#endif
#ifdef __USE_GNU
+# ifdef __LDBL_COMPAT
__LDBL_REDIR1_DECL (wcstold_l, wcstod_l);
+# else
+__LDBL_REDIR1_DECL (wcstold_l, __wcstoieee128_l)
+# endif
#endif
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
-__LDBL_REDIR_DECL (__swprintf_chk)
-__LDBL_REDIR_DECL (__vswprintf_chk)
+__LDBL_REDIR2_DECL (swprintf_chk)
+__LDBL_REDIR2_DECL (vswprintf_chk)
# if __USE_FORTIFY_LEVEL > 1
-__LDBL_REDIR_DECL (__fwprintf_chk)
-__LDBL_REDIR_DECL (__wprintf_chk)
-__LDBL_REDIR_DECL (__vfwprintf_chk)
-__LDBL_REDIR_DECL (__vwprintf_chk)
+__LDBL_REDIR2_DECL (fwprintf_chk)
+__LDBL_REDIR2_DECL (wprintf_chk)
+__LDBL_REDIR2_DECL (vfwprintf_chk)
+__LDBL_REDIR2_DECL (vwprintf_chk)
# endif
#endif
diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h
index 5e0d65b..fb2cec8 100644
--- a/wcsmbs/wchar.h
+++ b/wcsmbs/wchar.h
@@ -633,9 +633,11 @@ extern int swscanf (const wchar_t *__restrict __s,
__THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
/* For historical reasons, the C99-compliant versions of the scanf
- functions are at alternative names. When __LDBL_COMPAT is in
- effect, this is handled in bits/wchar-ldbl.h. */
-#if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT
+ functions are at alternative names. When __LDBL_COMPAT or
+ __LONG_DOUBLE_USES_FLOAT128 are in effect, this is handled in
+ bits/wchar-ldbl.h. */
+#if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT \
+ && __LONG_DOUBLE_USES_FLOAT128 == 0
# ifdef __REDIRECT
extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream,
const wchar_t *__restrict __format, ...),
@@ -688,7 +690,8 @@ extern int vswscanf (const wchar_t *__restrict __s,
/* Same redirection as above for the v*wscanf family. */
# if !__GLIBC_USE (DEPRECATED_SCANF) \
&& (!defined __LDBL_COMPAT || !defined __REDIRECT) \
- && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
+ && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) \
+ && __LONG_DOUBLE_USES_FLOAT128 == 0
# ifdef __REDIRECT
extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s,
const wchar_t *__restrict __format,
@@ -849,7 +852,8 @@ extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
# include <bits/wchar2.h>
#endif
-#ifdef __LDBL_COMPAT
+#include <bits/floatn.h>
+#if defined __LDBL_COMPAT || __LONG_DOUBLE_USES_FLOAT128 == 1
# include <bits/wchar-ldbl.h>
#endif