diff options
author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-12-20 08:41:55 -0300 |
---|---|---|
committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-01-06 07:59:49 -0300 |
commit | 65ccd641bacea33be23d51da737c2de7543d0f5e (patch) | |
tree | a3dbd16426b4a51dcb8450ede9d47c5a90e58a66 /sysdeps/unix/sysv/linux/riscv | |
parent | c1fc366ec9e78e17ad3e2ecdb4c4cc662decc32b (diff) | |
download | glibc-65ccd641bacea33be23d51da737c2de7543d0f5e.tar.gz glibc-65ccd641bacea33be23d51da737c2de7543d0f5e.tar.xz glibc-65ccd641bacea33be23d51da737c2de7543d0f5e.zip |
debug: Remove catchsegv and libSegfault (BZ #14913)
Trapping SIGSEGV within the process is error-prone, adds security issues, and modern analysis design tends to happen out of the process (either by attaching a debugger or by post-mortem analysis). The libSegfault also has some design problems, it uses non async-signal-safe function (backtrace) on signal handler. There are multiple alternatives if users do want to use similar functionality, such as sigsegv gnulib module or libsegfault.
Diffstat (limited to 'sysdeps/unix/sysv/linux/riscv')
-rw-r--r-- | sysdeps/unix/sysv/linux/riscv/register-dump.h | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/sysdeps/unix/sysv/linux/riscv/register-dump.h b/sysdeps/unix/sysv/linux/riscv/register-dump.h deleted file mode 100644 index 177636f18f..0000000000 --- a/sysdeps/unix/sysv/linux/riscv/register-dump.h +++ /dev/null @@ -1,63 +0,0 @@ -/* Dump registers. - Copyright (C) 2000-2022 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/>. */ - -#include <unistd.h> -#include <string.h> -#include <_itoa.h> - -static void -hexvalue (unsigned long int value, char *buf, size_t len) -{ - char *cp = _itoa_word (value, buf + len, 16, 0); - while (cp > buf) - *--cp = '0'; -} - -#define REGDUMP_NREGS 32 -#define REGDUMP_PER_LINE (80 / (__WORDSIZE / 4 + 4)) - -static void -register_dump (int fd, ucontext_t *ctx) -{ - int i; - char regvalue[__WORDSIZE / 4 + 1]; - char str[82 * ((REGDUMP_NREGS + REGDUMP_PER_LINE - 1) / REGDUMP_PER_LINE)]; - - static const char names[REGDUMP_NREGS][4] = { - "pc", "ra", "sp", "gp", "tp", "t0", "t1", "t2", - "s0", "s1", "a0", "a1", "a2", "a3", "a4", "a5", - "a6", "a7", "s2", "s3", "s4", "s5", "s6", "s7", - "s8", "s9", "sA", "sB", "t3", "t4", "t5", "t6" - }; - - str[0] = 0; - for (i = 0; i < REGDUMP_NREGS; i++) - { - strcat (str, names[i]); - strcat (str, " "); - hexvalue (ctx->uc_mcontext.__gregs[i], regvalue, __WORDSIZE / 4); - strcat (str, regvalue); - - if ((i + 1) % REGDUMP_PER_LINE == 0) - strcat (str, "\n"); - } - - write (fd, str, strlen (str)); -} - -#define REGISTER_DUMP register_dump (fd, ctx) |