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30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
274 lines
8.4 KiB
C
274 lines
8.4 KiB
C
/* Dump registers.
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Copyright (C) 1999-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sys/uio.h>
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#include <_itoa.h>
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/* We will print the register dump in this format:
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TSTATE: XXXXXXXXXXXXXXXX TPC: XXXXXXXXXXXXXXXX TNPC: XXXXXXXXXXXXXXXX
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Y: XXXXXXXX
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g0: 0000000000000000 g1: XXXXXXXXXXXXXXXX g2: XXXXXXXXXXXXXXXX
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g3: XXXXXXXXXXXXXXXX g4: XXXXXXXXXXXXXXXX g5: XXXXXXXXXXXXXXXX
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g6: XXXXXXXXXXXXXXXX g7: XXXXXXXXXXXXXXXX
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o0: XXXXXXXXXXXXXXXX o1: XXXXXXXXXXXXXXXX o2: XXXXXXXXXXXXXXXX
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o3: XXXXXXXXXXXXXXXX o4: XXXXXXXXXXXXXXXX o5: XXXXXXXXXXXXXXXX
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sp: XXXXXXXXXXXXXXXX o7: XXXXXXXXXXXXXXXX
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l0: XXXXXXXXXXXXXXXX l1: XXXXXXXXXXXXXXXX l2: XXXXXXXXXXXXXXXX
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l3: XXXXXXXXXXXXXXXX l4: XXXXXXXXXXXXXXXX l5: XXXXXXXXXXXXXXXX
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l6: XXXXXXXXXXXXXXXX l7: XXXXXXXXXXXXXXXX
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i0: XXXXXXXXXXXXXXXX i1: XXXXXXXXXXXXXXXX i2: XXXXXXXXXXXXXXXX
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i3: XXXXXXXXXXXXXXXX i4: XXXXXXXXXXXXXXXX i5: XXXXXXXXXXXXXXXX
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fp: XXXXXXXXXXXXXXXX i7: XXXXXXXXXXXXXXXX
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Mask: XXXXXXXXXXXXXXXX XFSR: XXXXXXXXXXXXXXXX GSR: XX FPRS: X
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f0: XXXXXXXXXXXXXXXX f2: XXXXXXXXXXXXXXXX f4: XXXXXXXXXXXXXXXX
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f6: XXXXXXXXXXXXXXXX f8: XXXXXXXXXXXXXXXX f10: XXXXXXXXXXXXXXXX
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f12: XXXXXXXXXXXXXXXX f14: XXXXXXXXXXXXXXXX f16: XXXXXXXXXXXXXXXX
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f18: XXXXXXXXXXXXXXXX f20: XXXXXXXXXXXXXXXX f22: XXXXXXXXXXXXXXXX
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f24: XXXXXXXXXXXXXXXX f26: XXXXXXXXXXXXXXXX f28: XXXXXXXXXXXXXXXX
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f30: XXXXXXXXXXXXXXXX f32: XXXXXXXXXXXXXXXX f34: XXXXXXXXXXXXXXXX
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f36: XXXXXXXXXXXXXXXX f38: XXXXXXXXXXXXXXXX f40: XXXXXXXXXXXXXXXX
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f42: XXXXXXXXXXXXXXXX f44: XXXXXXXXXXXXXXXX f46: XXXXXXXXXXXXXXXX
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f48: XXXXXXXXXXXXXXXX f50: XXXXXXXXXXXXXXXX f52: XXXXXXXXXXXXXXXX
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f54: XXXXXXXXXXXXXXXX f56: XXXXXXXXXXXXXXXX f58: XXXXXXXXXXXXXXXX
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f60: XXXXXXXXXXXXXXXX f62: XXXXXXXXXXXXXXXX
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*/
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static void
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hexvalue (unsigned long int value, char *buf, size_t len)
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{
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char *cp = _itoa_word (value, buf + len, 16, 0);
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while (cp > buf)
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*--cp = '0';
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}
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/* The sparc64 kernel signal frame for SA_SIGINFO is defined as:
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struct rt_signal_frame
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{
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struct sparc_stackf ss;
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siginfo_t info;
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struct pt_regs regs; <- void *ctx
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__siginfo_fpu_t *fpu_save;
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stack_t stack;
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sigset_t mask;
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__siginfo_rwin_t *rwin_save;
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};
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Unlike other architectures, sparc32 passes pt_regs32 REGS pointers as
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the third argument to a sa_sigaction handler with SA_SIGINFO enabled. */
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static void
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register_dump (int fd, void *ctx)
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{
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char regs[36][16];
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char fregs[68][8];
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struct iovec iov[150];
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size_t nr = 0;
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int i;
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struct pt_regs *ptregs = (struct pt_regs*) ((siginfo_t *)ctx + 1);
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unsigned long *r = (unsigned long *) (ptregs->u_regs[14] + STACK_BIAS);
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__siginfo_fpu_t *f = (__siginfo_fpu_t *)(ptregs + 1);
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struct kernel_sigset_t {
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unsigned long sig[1];
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} *mask = (struct kernel_sigset_t *)((stack_t *)(f + 1) + 1);
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#define ADD_STRING(str) \
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iov[nr].iov_base = (char *) str; \
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iov[nr].iov_len = strlen (str); \
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++nr
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#define ADD_MEM(str, len) \
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iov[nr].iov_base = str; \
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iov[nr].iov_len = len; \
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++nr
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/* Generate strings of register contents. */
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hexvalue (ptregs->tstate, regs[0], 16);
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hexvalue (ptregs->tpc, regs[1], 16);
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hexvalue (ptregs->tnpc, regs[2], 16);
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hexvalue (ptregs->y, regs[3], 8);
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for (i = 1; i <= 15; i++)
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hexvalue (ptregs->u_regs[i], regs[3+i], 16);
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for (i = 0; i <= 15; i++)
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hexvalue (r[i], regs[19+i], 16);
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hexvalue (mask->sig[0], regs[35], 16);
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/* Generate the output. */
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ADD_STRING ("Register dump:\n\n TSTATE: ");
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ADD_MEM (regs[0], 16);
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ADD_STRING (" TPC: ");
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ADD_MEM (regs[1], 16);
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ADD_STRING (" TNPC: ");
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ADD_MEM (regs[2], 16);
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ADD_STRING ("\n Y: ");
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ADD_MEM (regs[3], 8);
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ADD_STRING ("\n g0: 0000000000000000 g1: ");
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ADD_MEM (regs[4], 16);
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ADD_STRING (" g2: ");
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ADD_MEM (regs[5], 16);
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ADD_STRING ("\n g3: ");
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ADD_MEM (regs[6], 16);
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ADD_STRING (" g4: ");
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ADD_MEM (regs[7], 16);
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ADD_STRING (" g5: ");
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ADD_MEM (regs[8], 16);
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ADD_STRING ("\n g6: ");
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ADD_MEM (regs[9], 16);
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ADD_STRING (" g7: ");
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ADD_MEM (regs[10], 16);
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ADD_STRING ("\n o0: ");
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ADD_MEM (regs[11], 16);
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ADD_STRING (" o1: ");
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ADD_MEM (regs[12], 16);
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ADD_STRING (" o2: ");
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ADD_MEM (regs[13], 16);
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ADD_STRING ("\n o3: ");
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ADD_MEM (regs[14], 16);
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ADD_STRING (" o4: ");
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ADD_MEM (regs[15], 16);
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ADD_STRING (" o5: ");
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ADD_MEM (regs[16], 16);
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ADD_STRING ("\n sp: ");
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ADD_MEM (regs[17], 16);
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ADD_STRING (" o7: ");
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ADD_MEM (regs[18], 16);
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ADD_STRING ("\n l0: ");
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ADD_MEM (regs[19], 16);
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ADD_STRING (" l1: ");
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ADD_MEM (regs[20], 16);
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ADD_STRING (" l2: ");
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ADD_MEM (regs[21], 16);
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ADD_STRING ("\n l3: ");
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ADD_MEM (regs[22], 16);
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ADD_STRING (" l4: ");
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ADD_MEM (regs[23], 16);
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ADD_STRING (" l5: ");
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ADD_MEM (regs[24], 16);
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ADD_STRING ("\n l6: ");
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ADD_MEM (regs[25], 16);
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ADD_STRING (" l7: ");
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ADD_MEM (regs[26], 16);
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ADD_STRING ("\n i0: ");
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ADD_MEM (regs[27], 16);
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ADD_STRING (" i1: ");
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ADD_MEM (regs[28], 16);
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ADD_STRING (" i2: ");
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ADD_MEM (regs[29], 16);
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ADD_STRING ("\n i3: ");
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ADD_MEM (regs[30], 16);
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ADD_STRING (" i4: ");
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ADD_MEM (regs[31], 16);
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ADD_STRING (" i5: ");
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ADD_MEM (regs[32], 16);
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ADD_STRING ("\n fp: ");
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ADD_MEM (regs[33], 16);
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ADD_STRING (" i7: ");
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ADD_MEM (regs[34], 16);
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ADD_STRING ("\n\n Mask: ");
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ADD_MEM (regs[35], 16);
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if (f != NULL)
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{
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for (i = 0; i < 64; i++)
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hexvalue (f->si_float_regs[i], fregs[i], 8);
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hexvalue (f->si_fsr, fregs[64], 16);
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hexvalue (f->si_gsr, fregs[66], 2);
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hexvalue (f->si_fprs, fregs[67], 1);
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ADD_STRING (" XFSR: ");
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ADD_MEM (fregs[64], 16);
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ADD_STRING (" GSR: ");
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ADD_MEM (fregs[66], 2);
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ADD_STRING (" FPRS: ");
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ADD_MEM (fregs[67], 1);
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ADD_STRING ("\n f0: ");
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ADD_MEM (fregs[0], 16);
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ADD_STRING (" f2: ");
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ADD_MEM (fregs[2], 16);
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ADD_STRING (" f4: ");
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ADD_MEM (fregs[4], 16);
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ADD_STRING ("\n f6: ");
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ADD_MEM (fregs[6], 16);
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ADD_STRING (" f8: ");
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ADD_MEM (fregs[8], 16);
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ADD_STRING (" f10: ");
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ADD_MEM (fregs[10], 16);
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ADD_STRING ("\n f12: ");
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ADD_MEM (fregs[12], 16);
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ADD_STRING (" f14: ");
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ADD_MEM (fregs[14], 16);
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ADD_STRING (" f16: ");
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ADD_MEM (fregs[16], 16);
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ADD_STRING ("\n f18: ");
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ADD_MEM (fregs[18], 16);
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ADD_STRING (" f20: ");
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ADD_MEM (fregs[20], 16);
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ADD_STRING (" f22: ");
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ADD_MEM (fregs[22], 16);
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ADD_STRING ("\n f24: ");
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ADD_MEM (fregs[24], 16);
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ADD_STRING (" f26: ");
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ADD_MEM (fregs[26], 16);
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ADD_STRING (" f28: ");
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ADD_MEM (fregs[28], 16);
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ADD_STRING ("\n f30: ");
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ADD_MEM (fregs[30], 16);
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ADD_STRING (" f32: ");
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ADD_MEM (fregs[32], 16);
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ADD_STRING (" f34: ");
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ADD_MEM (fregs[34], 16);
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ADD_STRING ("\n f36: ");
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ADD_MEM (fregs[36], 16);
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ADD_STRING (" f38: ");
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ADD_MEM (fregs[38], 16);
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ADD_STRING (" f40: ");
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ADD_MEM (fregs[40], 16);
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ADD_STRING ("\n f42: ");
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ADD_MEM (fregs[42], 16);
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ADD_STRING (" f44: ");
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ADD_MEM (fregs[44], 16);
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ADD_STRING (" f46: ");
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ADD_MEM (fregs[46], 16);
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ADD_STRING ("\n f48: ");
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ADD_MEM (fregs[48], 16);
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ADD_STRING (" f50: ");
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ADD_MEM (fregs[50], 16);
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ADD_STRING (" f52: ");
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ADD_MEM (fregs[52], 16);
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ADD_STRING ("\n f54: ");
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ADD_MEM (fregs[54], 16);
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ADD_STRING (" f56: ");
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ADD_MEM (fregs[56], 16);
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ADD_STRING (" f58: ");
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ADD_MEM (fregs[58], 16);
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ADD_STRING ("\n f60: ");
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ADD_MEM (fregs[60], 16);
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ADD_STRING (" f62: ");
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ADD_MEM (fregs[62], 16);
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}
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ADD_STRING ("\n");
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/* Write the stuff out. */
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writev (fd, iov, nr);
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}
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#define REGISTER_DUMP register_dump (fd, ctx)
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