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| author | Adhemerval Zanella Netto <adhemerval.zanella@linaro.org> | 2022-12-27 18:11:42 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-03-27 13:57:55 -0300 |
| commit | 88677348b4de73874ca7d5a47451f42880f65f07 (patch) | |
| tree | 9ebe22b88c2487331521737dfdf089f9e3e2439f /sysdeps/ieee754 | |
| parent | e4d336f1ace7c7ca535f7f85485373752bc76ed5 (diff) | |
| download | glibc-88677348b4de73874ca7d5a47451f42880f65f07.tar.gz glibc-88677348b4de73874ca7d5a47451f42880f65f07.tar.xz glibc-88677348b4de73874ca7d5a47451f42880f65f07.zip | |
Move libc_freeres_ptrs and libc_subfreeres to hidden/weak functions
They are both used by __libc_freeres to free all library malloc allocated resources to help tooling like mtrace or valgrind with memory leak tracking. The current scheme uses assembly markers and linker script entries to consolidate the free routine function pointers in the RELRO segment and to be freed buffers in BSS. This patch changes it to use specific free functions for libc_freeres_ptrs buffers and call the function pointer array directly with call_function_static_weak. It allows the removal of both the internal macros and the linker script sections. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'sysdeps/ieee754')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt.c | 1 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128ibm-compat/set-freeres-fp.h | 22 |
2 files changed, 23 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt.c index e56e01ab2d..18a881d4d0 100644 --- a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt.c +++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-qefgcvt.c @@ -42,6 +42,7 @@ typeof (qfcvt_r) ___qfcvtieee128_r; #define __GCVT ___qgcvtieee128 #define __ECVT_R ___qecvtieee128_r #define __FCVT_R ___qfcvtieee128_r +#define __EFGCVT_FREEMEM_PTR __libc_efgcvtieee128_freemem_ptr #include <efgcvt-ldbl-macros.h> #include <efgcvt-template.c> diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/set-freeres-fp.h b/sysdeps/ieee754/ldbl-128ibm-compat/set-freeres-fp.h new file mode 100644 index 0000000000..3f6e17612a --- /dev/null +++ b/sysdeps/ieee754/ldbl-128ibm-compat/set-freeres-fp.h @@ -0,0 +1,22 @@ +/* System specific resource deallocation. IBM long double 128 version. + Copyright (C) 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 + 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/>. */ + +extern char * __libc_efgcvtieee128_freemem_ptr attribute_hidden; + +#define call_freeres_fp_funcs \ + call_free_static_weak (__libc_efgcvtieee128_freemem_ptr) |