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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-06-26 16:06:49 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-12-10 17:42:37 -0300 |
| commit | 720480934ab9107714f1ffc29222dfb5d3bc5b1d (patch) | |
| tree | 3851a6f8fe50b3548e667651805dadb7c242f43b /sysdeps/unix/sysv/linux/ia64 | |
| parent | 880433de13fa31e52587720f81b762a6c7797e4e (diff) | |
| download | glibc-720480934ab9107714f1ffc29222dfb5d3bc5b1d.tar.gz glibc-720480934ab9107714f1ffc29222dfb5d3bc5b1d.tar.xz glibc-720480934ab9107714f1ffc29222dfb5d3bc5b1d.zip | |
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 <tuliom@linux.ibm.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/brk.S | 50 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/dl-brk.S | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sysdep.h | 3 |
3 files changed, 3 insertions, 51 deletions
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 <eranian@hpl.hp.com> and - Jes Sorensen, <Jes.Sorensen@cern.ch>, 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 - <https://www.gnu.org/licenses/>. */ - -#include <sysdep.h> - -#include <asm/errno.h> - - .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) diff --git a/sysdeps/unix/sysv/linux/ia64/dl-brk.S b/sysdeps/unix/sysv/linux/ia64/dl-brk.S deleted file mode 100644 index eeb96544e3..0000000000 --- a/sysdeps/unix/sysv/linux/ia64/dl-brk.S +++ /dev/null @@ -1 +0,0 @@ -#include <brk.S> diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.h b/sysdeps/unix/sysv/linux/ia64/sysdep.h index 03ed52552e..e6bcaabecc 100644 --- a/sysdeps/unix/sysv/linux/ia64/sysdep.h +++ b/sysdeps/unix/sysv/linux/ia64/sysdep.h @@ -172,6 +172,9 @@ #else /* not __ASSEMBLER__ */ +#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL +#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1 + #define BREAK_INSN_1(num) "break " #num ";;\n\t" #define BREAK_INSN(num) BREAK_INSN_1(num) |