From 720480934ab9107714f1ffc29222dfb5d3bc5b1d Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Fri, 26 Jun 2020 16:06:49 -0300 Subject: linux: Consolidate brk implementation It removes all the arch-specific assembly implementation. The outliers are alpha, where its kernel ABI explict return -ENOMEM in case of failure; and i686, where it can't use "call *%gs:SYSINFO_OFFSET" during statup in static PIE. Also some ABIs exports an additional ___brk_addr symbol and to handle it an internal HAVE_INTERNAL_BRK_ADDR_SYMBOL is added. Checked on x86_64-linux-gnu, i686-linux-gnu, adn with builsd for the affected ABIs. Reviewed-by: Tulio Magno Quites Machado Filho --- sysdeps/unix/sysv/linux/ia64/brk.S | 50 -------------------------------------- 1 file changed, 50 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/ia64/brk.S (limited to 'sysdeps/unix/sysv/linux/ia64/brk.S') diff --git a/sysdeps/unix/sysv/linux/ia64/brk.S b/sysdeps/unix/sysv/linux/ia64/brk.S deleted file mode 100644 index 734d3467a7..0000000000 --- a/sysdeps/unix/sysv/linux/ia64/brk.S +++ /dev/null @@ -1,50 +0,0 @@ -/* brk system call for Linux/ia64 - Copyright (C) 1999-2020 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Written by Stéphane Eranian and - Jes Sorensen, , April 1999. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include - -#include - - .global __curbrk - .type __curbrk,@object - .size __curbrk,8 - .data - .align 8 -__curbrk: - data8 0 - -weak_alias (__curbrk, ___brk_addr) - -LEAF(__brk) - .regstk 1, 0, 0, 0 - DO_CALL(__NR_brk) - cmp.ltu p6, p0 = ret0, in0 - addl r9 = @ltoff(__curbrk), gp - ;; - ld8 r9 = [r9] -(p6) mov ret0 = ENOMEM -(p6) br.cond.spnt.few __syscall_error - ;; - st8 [r9] = ret0 - mov ret0 = 0 - ret -END(__brk) - -weak_alias (__brk, brk) -- cgit 1.4.1