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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-12-20 08:41:55 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-01-06 07:59:49 -0300 |
commit | 65ccd641bacea33be23d51da737c2de7543d0f5e (patch) | |
tree | a3dbd16426b4a51dcb8450ede9d47c5a90e58a66 /sysdeps/unix/sysv/linux/s390/s390-32 | |
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/s390/s390-32')
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/register-dump.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/register-dump.h b/sysdeps/unix/sysv/linux/s390/s390-32/register-dump.h deleted file mode 100644 index 51aa1e4cc0..0000000000 --- a/sysdeps/unix/sysv/linux/s390/s390-32/register-dump.h +++ /dev/null @@ -1,128 +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 <sys/uio.h> -#include <_itoa.h> - -/* We will print the register dump in this format: - - GPR0: XXXXXXXX GPR1: XXXXXXXX GPR2: XXXXXXXX GPR3: XXXXXXXX - GPR4: XXXXXXXX GPR5: XXXXXXXX GPR6: XXXXXXXX GPR7: XXXXXXXX - GPR8: XXXXXXXX GPR9: XXXXXXXX GPRA: XXXXXXXX GPRB: XXXXXXXX - GPRC: XXXXXXXX GPRD: XXXXXXXX GPRE: XXXXXXXX GPRF: XXXXXXXX - - PSW.MASK: XXXXXXXX PSW.ADDR: XXXXXXXX - - ST(0) XXXX XXXXXXXXXXXXXXXX ST(1) XXXX XXXXXXXXXXXXXXXX - ST(2) XXXX XXXXXXXXXXXXXXXX ST(3) XXXX XXXXXXXXXXXXXXXX - ST(4) XXXX XXXXXXXXXXXXXXXX ST(5) XXXX XXXXXXXXXXXXXXXX - ST(6) XXXX XXXXXXXXXXXXXXXX ST(7) XXXX XXXXXXXXXXXXXXXX - - */ - -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'; -} - -static void -register_dump (int fd, struct ucontext_t *ctx) -{ - char regs[19][8]; - struct iovec iov[40]; - size_t nr = 0; - -#define ADD_STRING(str) \ - iov[nr].iov_base = (char *) str; \ - iov[nr].iov_len = strlen (str); \ - ++nr -#define ADD_MEM(str, len) \ - iov[nr].iov_base = str; \ - iov[nr].iov_len = len; \ - ++nr - - /* Generate strings of register contents. */ - hexvalue (ctx->uc_mcontext.gregs[0], regs[0], 8); - hexvalue (ctx->uc_mcontext.gregs[1], regs[1], 8); - hexvalue (ctx->uc_mcontext.gregs[2], regs[2], 8); - hexvalue (ctx->uc_mcontext.gregs[3], regs[3], 8); - hexvalue (ctx->uc_mcontext.gregs[4], regs[4], 8); - hexvalue (ctx->uc_mcontext.gregs[5], regs[5], 8); - hexvalue (ctx->uc_mcontext.gregs[6], regs[6], 8); - hexvalue (ctx->uc_mcontext.gregs[7], regs[7], 8); - hexvalue (ctx->uc_mcontext.gregs[8], regs[8], 8); - hexvalue (ctx->uc_mcontext.gregs[9], regs[9], 8); - hexvalue (ctx->uc_mcontext.gregs[10], regs[10], 8); - hexvalue (ctx->uc_mcontext.gregs[11], regs[11], 8); - hexvalue (ctx->uc_mcontext.gregs[12], regs[12], 8); - hexvalue (ctx->uc_mcontext.gregs[13], regs[13], 8); - hexvalue (ctx->uc_mcontext.gregs[14], regs[14], 8); - hexvalue (ctx->uc_mcontext.gregs[15], regs[15], 8); - hexvalue (ctx->uc_mcontext.psw.mask, regs[16], 8); - hexvalue (ctx->uc_mcontext.psw.addr, regs[17], 8); - - /* Generate the output. */ - ADD_STRING ("Register dump:\n\n GPR0: "); - ADD_MEM (regs[0], 8); - ADD_STRING (" GPR1: "); - ADD_MEM (regs[1], 8); - ADD_STRING (" GPR2: "); - ADD_MEM (regs[2], 8); - ADD_STRING (" GPR3: "); - ADD_MEM (regs[3], 8); - ADD_STRING ("\n GPR4: "); - ADD_MEM (regs[4], 8); - ADD_STRING (" GPR5: "); - ADD_MEM (regs[5], 8); - ADD_STRING (" GPR6: "); - ADD_MEM (regs[6], 8); - ADD_STRING (" GPR7: "); - ADD_MEM (regs[7], 8); - ADD_STRING ("\n GPR8: "); - ADD_MEM (regs[8], 8); - ADD_STRING (" GPR9: "); - ADD_MEM (regs[9], 8); - ADD_STRING (" GPRA: "); - ADD_MEM (regs[10], 8); - ADD_STRING (" GPRB: "); - ADD_MEM (regs[11], 8); - ADD_STRING ("\n GPRC: "); - ADD_MEM (regs[12], 8); - ADD_STRING (" GPRD: "); - ADD_MEM (regs[13], 8); - ADD_STRING (" GPRE: "); - ADD_MEM (regs[14], 8); - ADD_STRING (" GPRF: "); - ADD_MEM (regs[15], 8); - ADD_STRING ("\n\n PSW.MASK: "); - ADD_MEM (regs[16], 8); - ADD_STRING (" PSW.ADDR: "); - ADD_MEM (regs[17], 8); - ADD_STRING (" TRAP: "); - ADD_MEM (regs[18], 4); - ADD_STRING ("\n"); - - /* Write the stuff out. */ - writev (fd, iov, nr); -} - - -#define REGISTER_DUMP register_dump (fd, ctx) |