From 592b6d00aaaf435efd687e99b5985852dffb4c80 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Wed, 6 Apr 2022 11:46:46 -0300 Subject: stdio: Split __get_errname definition from errlist.c The loader does not need to pull all __get_errlist definitions and its size is decreased: Before: $ size elf/ld.so text data bss dec hex filename 197774 11024 456 209254 33166 elf/ld.so After: $ size elf/ld.so text data bss dec hex filename 191510 9936 456 201902 314ae elf/ld.so Checked on x86_64-linux-gnu. --- stdio-common/errlist.c | 38 ++------------------------------------ 1 file changed, 2 insertions(+), 36 deletions(-) (limited to 'stdio-common/errlist.c') diff --git a/stdio-common/errlist.c b/stdio-common/errlist.c index 310b858e31..1c09a31a7a 100644 --- a/stdio-common/errlist.c +++ b/stdio-common/errlist.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1991-2022 Free Software Foundation, Inc. +/* Internal errno names mapping definition. + Copyright (C) 1991-2022 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -40,39 +41,4 @@ __get_errlist (int errnum) return NULL; } -static const union sys_errname_t -{ - struct - { -#define MSGSTRFIELD1(line) str##line -#define MSGSTRFIELD(line) MSGSTRFIELD1(line) -#define _S(n, str) char MSGSTRFIELD(__LINE__)[sizeof(#n)]; -#include -#undef _S - }; - char str[0]; -} _sys_errname = { { -#define _S(n, s) #n, -#include -#undef _S -} }; - -static const unsigned short _sys_errnameidx[] = -{ -#define _S(n, s) \ - [ERR_MAP(n)] = offsetof(union sys_errname_t, MSGSTRFIELD(__LINE__)), -#include -#undef _S -}; - -const char * -__get_errname (int errnum) -{ - int mapped = ERR_MAP (errnum); - if (mapped < 0 || mapped >= array_length (_sys_errnameidx) - || (mapped > 0 && _sys_errnameidx[mapped] == 0)) - return NULL; - return _sys_errname.str + _sys_errnameidx[mapped]; -} - #include -- cgit v1.2.3