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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-12-20 08:41:55 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2022-01-06 07:59:49 -0300
commit65ccd641bacea33be23d51da737c2de7543d0f5e (patch)
treea3dbd16426b4a51dcb8450ede9d47c5a90e58a66 /sysdeps/unix/sysv/linux/sparc/sparc32
parentc1fc366ec9e78e17ad3e2ecdb4c4cc662decc32b (diff)
downloadglibc-65ccd641bacea33be23d51da737c2de7543d0f5e.tar.gz
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/sparc/sparc32')
-rw-r--r--sysdeps/unix/sysv/linux/sparc/sparc32/register-dump.h342
1 files changed, 0 insertions, 342 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/register-dump.h b/sysdeps/unix/sysv/linux/sparc/sparc32/register-dump.h
deleted file mode 100644
index 4c27c1e854..0000000000
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/register-dump.h
+++ /dev/null
@@ -1,342 +0,0 @@
-/* Dump registers.
- Copyright (C) 1999-2022 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:
-
- PSR: XXXXXXXX PC: XXXXXXXX NPC: XXXXXXXX Y: XXXXXXXX
- g0: 00000000 g1: XXXXXXXX g2: XXXXXXXX g3: XXXXXXXX
- g4: XXXXXXXX g5: XXXXXXXX g6: XXXXXXXX g7: XXXXXXXX
- o0: XXXXXXXX o1: XXXXXXXX o2: XXXXXXXX o3: XXXXXXXX
- o4: XXXXXXXX o5: XXXXXXXX sp: XXXXXXXX o7: XXXXXXXX
- l0: XXXXXXXX l1: XXXXXXXX l2: XXXXXXXX l3: XXXXXXXX
- l4: XXXXXXXX l5: XXXXXXXX l6: XXXXXXXX l7: XXXXXXXX
- i0: XXXXXXXX i1: XXXXXXXX i2: XXXXXXXX i3: XXXXXXXX
- i4: XXXXXXXX i5: XXXXXXXX fp: XXXXXXXX i7: XXXXXXXX
-
- followed on sun4, sun4c, sun4d, sun4m by:
-
- Old mask: XXXXXXXX FSR: XXXXXXXX FPQ: XXXXXXXX
- f0: XXXXXXXXXXXXXXXX f2: XXXXXXXXXXXXXXXX f4: XXXXXXXXXXXXXXXX
- f6: XXXXXXXXXXXXXXXX f8: XXXXXXXXXXXXXXXX f10: XXXXXXXXXXXXXXXX
- f12: XXXXXXXXXXXXXXXX f14: XXXXXXXXXXXXXXXX f16: XXXXXXXXXXXXXXXX
- f18: XXXXXXXXXXXXXXXX f20: XXXXXXXXXXXXXXXX f22: XXXXXXXXXXXXXXXX
- f24: XXXXXXXXXXXXXXXX f26: XXXXXXXXXXXXXXXX f28: XXXXXXXXXXXXXXXX
- f30: XXXXXXXXXXXXXXXX
-
- and on sun4u by:
-
- Old mask: XXXXXXXX XFSR: XXXXXXXXXXXXXXXX GSR: XX FPRS: X
- f0: XXXXXXXXXXXXXXXX f2: XXXXXXXXXXXXXXXX f4: XXXXXXXXXXXXXXXX
- f6: XXXXXXXXXXXXXXXX f8: XXXXXXXXXXXXXXXX f10: XXXXXXXXXXXXXXXX
- f12: XXXXXXXXXXXXXXXX f14: XXXXXXXXXXXXXXXX f16: XXXXXXXXXXXXXXXX
- f18: XXXXXXXXXXXXXXXX f20: XXXXXXXXXXXXXXXX f22: XXXXXXXXXXXXXXXX
- f24: XXXXXXXXXXXXXXXX f26: XXXXXXXXXXXXXXXX f28: XXXXXXXXXXXXXXXX
- f30: XXXXXXXXXXXXXXXX f32: XXXXXXXXXXXXXXXX f34: XXXXXXXXXXXXXXXX
- f36: XXXXXXXXXXXXXXXX f38: XXXXXXXXXXXXXXXX f40: XXXXXXXXXXXXXXXX
- f42: XXXXXXXXXXXXXXXX f44: XXXXXXXXXXXXXXXX f46: XXXXXXXXXXXXXXXX
- f48: XXXXXXXXXXXXXXXX f50: XXXXXXXXXXXXXXXX f52: XXXXXXXXXXXXXXXX
- f54: XXXXXXXXXXXXXXXX f56: XXXXXXXXXXXXXXXX f58: XXXXXXXXXXXXXXXX
- f60: XXXXXXXXXXXXXXXX f62: 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';
-}
-
-struct __siginfo_sparc32_fpu
-{
- unsigned int si_float_regs[32];
- unsigned int si_fsr;
- unsigned int si_fpq;
-};
-struct __siginfo_sparc64_fpu
-{
- unsigned int si_float_regs[64];
- unsigned int si_xfsr;
- unsigned int si_fsr;
- unsigned int _pad1;
- unsigned int si_gsr;
- unsigned int _pad2;
- unsigned int si_fprs;
-};
-
-/* Unlike other architectures, sparc32 passes pt_regs32 REGS pointer as
- the third argument to a sa_sigaction handler with SA_SIGINFO enabled. */
-static void
-register_dump (int fd, void *ctx)
-{
- char regs[36][8];
- char fregs[68][8];
- struct iovec iov[150];
- size_t nr = 0;
- int i;
- struct pt_regs32 *ptregs = (struct pt_regs32 *) ctx;
- struct compat_sigset_t
- {
- unsigned int sig[2];
- };
- struct compat_sigset_t *mask = (struct compat_sigset_t *)(ptregs + 1);
- unsigned int *r = (unsigned int *) ptregs->u_regs[14];
-
-#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 (ptregs->psr, regs[0], 8);
- hexvalue (ptregs->pc, regs[1], 8);
- hexvalue (ptregs->npc, regs[2], 8);
- hexvalue (ptregs->y, regs[3], 8);
- for (i = 1; i <= 15; i++)
- hexvalue (ptregs->u_regs[i], regs[3+i], 8);
- for (i = 0; i <= 15; i++)
- hexvalue (r[i], regs[19+i], 8);
-
- hexvalue (mask->sig[0], regs[35], 8);
-
- /* Generate the output. */
- ADD_STRING ("Register dump:\n\n PSR: ");
- ADD_MEM (regs[0], 8);
- ADD_STRING (" PC: ");
- ADD_MEM (regs[1], 8);
- ADD_STRING (" NPC: ");
- ADD_MEM (regs[2], 8);
- ADD_STRING (" Y: ");
- ADD_MEM (regs[3], 8);
- ADD_STRING ("\n g0: 00000000 g1: ");
- ADD_MEM (regs[4], 8);
- ADD_STRING (" g2: ");
- ADD_MEM (regs[5], 8);
- ADD_STRING (" g3: ");
- ADD_MEM (regs[6], 8);
- ADD_STRING ("\n g4: ");
- ADD_MEM (regs[7], 8);
- ADD_STRING (" g5: ");
- ADD_MEM (regs[8], 8);
- ADD_STRING (" g6: ");
- ADD_MEM (regs[9], 8);
- ADD_STRING (" g7: ");
- ADD_MEM (regs[10], 8);
- ADD_STRING ("\n o0: ");
- ADD_MEM (regs[11], 8);
- ADD_STRING (" o1: ");
- ADD_MEM (regs[12], 8);
- ADD_STRING (" o2: ");
- ADD_MEM (regs[13], 8);
- ADD_STRING (" o3: ");
- ADD_MEM (regs[14], 8);
- ADD_STRING ("\n o4: ");
- ADD_MEM (regs[15], 8);
- ADD_STRING (" o5: ");
- ADD_MEM (regs[16], 8);
- ADD_STRING (" sp: ");
- ADD_MEM (regs[17], 8);
- ADD_STRING (" o7: ");
- ADD_MEM (regs[18], 8);
- ADD_STRING ("\n l0: ");
- ADD_MEM (regs[19], 8);
- ADD_STRING (" l1: ");
- ADD_MEM (regs[20], 8);
- ADD_STRING (" l2: ");
- ADD_MEM (regs[21], 8);
- ADD_STRING (" l3: ");
- ADD_MEM (regs[22], 8);
- ADD_STRING ("\n l4: ");
- ADD_MEM (regs[23], 8);
- ADD_STRING (" l5: ");
- ADD_MEM (regs[24], 8);
- ADD_STRING (" l6: ");
- ADD_MEM (regs[25], 8);
- ADD_STRING (" l7: ");
- ADD_MEM (regs[26], 8);
- ADD_STRING ("\n i0: ");
- ADD_MEM (regs[27], 8);
- ADD_STRING (" i1: ");
- ADD_MEM (regs[28], 8);
- ADD_STRING (" i2: ");
- ADD_MEM (regs[29], 8);
- ADD_STRING (" i3: ");
- ADD_MEM (regs[30], 8);
- ADD_STRING ("\n i4: ");
- ADD_MEM (regs[31], 8);
- ADD_STRING (" i5: ");
- ADD_MEM (regs[32], 8);
- ADD_STRING (" fp: ");
- ADD_MEM (regs[33], 8);
- ADD_STRING (" i7: ");
- ADD_MEM (regs[34], 8);
- ADD_STRING ("\n\n Old mask: ");
- ADD_MEM (regs[35], 8);
-
- if ((ptregs->psr & 0xff000000) == 0xff000000)
- {
- struct __siginfo_sparc64_fpu *f = *(struct __siginfo_sparc64_fpu **)
- (mask + 1);
-
- if (f != NULL)
- {
- for (i = 0; i < 64; i++)
- hexvalue (f->si_float_regs[i], fregs[i], 8);
- hexvalue (f->si_xfsr, fregs[64], 8);
- hexvalue (f->si_fsr, fregs[65], 8);
- hexvalue (f->si_gsr, fregs[66], 2);
- hexvalue (f->si_fprs, fregs[67], 1);
- ADD_STRING (" XFSR: ");
- ADD_MEM (fregs[64], 8);
- ADD_MEM (fregs[65], 8);
- ADD_STRING (" GSR: ");
- ADD_MEM (fregs[66], 2);
- ADD_STRING (" FPRS: ");
- ADD_MEM (fregs[67], 1);
- ADD_STRING ("\n f0: ");
- ADD_MEM (fregs[0], 16);
- ADD_STRING (" f2: ");
- ADD_MEM (fregs[2], 16);
- ADD_STRING (" f4: ");
- ADD_MEM (fregs[4], 16);
- ADD_STRING ("\n f6: ");
- ADD_MEM (fregs[6], 16);
- ADD_STRING (" f8: ");
- ADD_MEM (fregs[8], 16);
- ADD_STRING (" f10: ");
- ADD_MEM (fregs[10], 16);
- ADD_STRING ("\n f12: ");
- ADD_MEM (fregs[12], 16);
- ADD_STRING (" f14: ");
- ADD_MEM (fregs[14], 16);
- ADD_STRING (" f16: ");
- ADD_MEM (fregs[16], 16);
- ADD_STRING ("\n f18: ");
- ADD_MEM (fregs[18], 16);
- ADD_STRING (" f20: ");
- ADD_MEM (fregs[20], 16);
- ADD_STRING (" f22: ");
- ADD_MEM (fregs[22], 16);
- ADD_STRING ("\n f24: ");
- ADD_MEM (fregs[24], 16);
- ADD_STRING (" f26: ");
- ADD_MEM (fregs[26], 16);
- ADD_STRING (" f28: ");
- ADD_MEM (fregs[28], 16);
- ADD_STRING ("\n f30: ");
- ADD_MEM (fregs[30], 16);
- ADD_STRING (" f32: ");
- ADD_MEM (fregs[32], 16);
- ADD_STRING (" f34: ");
- ADD_MEM (fregs[34], 16);
- ADD_STRING ("\n f36: ");
- ADD_MEM (fregs[36], 16);
- ADD_STRING (" f38: ");
- ADD_MEM (fregs[38], 16);
- ADD_STRING (" f40: ");
- ADD_MEM (fregs[40], 16);
- ADD_STRING ("\n f42: ");
- ADD_MEM (fregs[42], 16);
- ADD_STRING (" f44: ");
- ADD_MEM (fregs[44], 16);
- ADD_STRING (" f46: ");
- ADD_MEM (fregs[46], 16);
- ADD_STRING ("\n f48: ");
- ADD_MEM (fregs[48], 16);
- ADD_STRING (" f50: ");
- ADD_MEM (fregs[50], 16);
- ADD_STRING (" f52: ");
- ADD_MEM (fregs[52], 16);
- ADD_STRING ("\n f54: ");
- ADD_MEM (fregs[54], 16);
- ADD_STRING (" f56: ");
- ADD_MEM (fregs[56], 16);
- ADD_STRING (" f58: ");
- ADD_MEM (fregs[58], 16);
- ADD_STRING ("\n f60: ");
- ADD_MEM (fregs[60], 16);
- ADD_STRING (" f62: ");
- ADD_MEM (fregs[62], 16);
- }
- }
- else
- {
- struct __siginfo_sparc32_fpu *f = *(struct __siginfo_sparc32_fpu **)
- (mask + 1);
-
- if (f != NULL)
- {
- for (i = 0; i < 32; i++)
- hexvalue (f->si_float_regs[i], fregs[i], 8);
- hexvalue (f->si_fsr, fregs[64], 8);
- hexvalue (f->si_fpq, fregs[65], 8);
- ADD_STRING (" FSR: ");
- ADD_MEM (fregs[64], 8);
- ADD_STRING (" FPQ: ");
- ADD_MEM (fregs[65], 8);
- ADD_STRING ("\n f0: ");
- ADD_MEM (fregs[0], 16);
- ADD_STRING (" f2: ");
- ADD_MEM (fregs[2], 16);
- ADD_STRING (" f4: ");
- ADD_MEM (fregs[4], 16);
- ADD_STRING ("\n f6: ");
- ADD_MEM (fregs[6], 16);
- ADD_STRING (" f8: ");
- ADD_MEM (fregs[8], 16);
- ADD_STRING (" f10: ");
- ADD_MEM (fregs[10], 16);
- ADD_STRING ("\n f12: ");
- ADD_MEM (fregs[12], 16);
- ADD_STRING (" f14: ");
- ADD_MEM (fregs[14], 16);
- ADD_STRING (" f16: ");
- ADD_MEM (fregs[16], 16);
- ADD_STRING ("\n f18: ");
- ADD_MEM (fregs[18], 16);
- ADD_STRING (" f20: ");
- ADD_MEM (fregs[20], 16);
- ADD_STRING (" f22: ");
- ADD_MEM (fregs[22], 16);
- ADD_STRING ("\n f24: ");
- ADD_MEM (fregs[24], 16);
- ADD_STRING (" f26: ");
- ADD_MEM (fregs[26], 16);
- ADD_STRING (" f28: ");
- ADD_MEM (fregs[28], 16);
- ADD_STRING ("\n f30: ");
- ADD_MEM (fregs[30], 16);
- }
- }
-
- ADD_STRING ("\n");
-
- /* Write the stuff out. */
- writev (fd, iov, nr);
-}
-
-
-#define REGISTER_DUMP register_dump (fd, ctx)