* sysdeps/unix/sysv/linux/m68k/register-dump.h: New file.

1 files changed, 214 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/m68k/register-dump.h b/sysdeps/unix/sysv/linux/m68k/register-dump.h
new file mode 100644
index 0000000000..6e66b62f5b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/m68k/register-dump.h
@@ -0,0 +1,214 @@
+/* Dump registers.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@gnu.org>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <stddef.h>
+#include <sys/uio.h>
+#include <stdio-common/_itoa.h>
+
+/* We will print the register dump in this format:
+
+  D0: XXXXXXXX   D1: XXXXXXXX   D2: XXXXXXXX   D3: XXXXXXXX
+  D4: XXXXXXXX   D5: XXXXXXXX   D6: XXXXXXXX   D7: XXXXXXXX
+  A0: XXXXXXXX   A1: XXXXXXXX   A2: XXXXXXXX   A3: XXXXXXXX
+  A4: XXXXXXXX   A5: XXXXXXXX   A6: XXXXXXXX   A7: XXXXXXXX
+  PC: XXXXXXXX   SR: XXXX
+
+  OldMask: XXXXXXXX  Vector: XXXX
+
+  FP0: XXXXXXXXXXXXXXXXXXXXXXXX   FP1: XXXXXXXXXXXXXXXXXXXXXXXX
+  FP2: XXXXXXXXXXXXXXXXXXXXXXXX   FP3: XXXXXXXXXXXXXXXXXXXXXXXX
+  FP4: XXXXXXXXXXXXXXXXXXXXXXXX   FP5: XXXXXXXXXXXXXXXXXXXXXXXX
+  FP6: XXXXXXXXXXXXXXXXXXXXXXXX   FP7: XXXXXXXXXXXXXXXXXXXXXXXX
+  FPCR: XXXXXXXX   FPSR: XXXXXXXX   FPIAR: XXXXXXXX
+
+*/
+
+/* Linux saves only the call-clobbered registers in the sigcontext.  We
+   need to use a trampoline that saves the rest so that the C code can
+   access them.  We use the sc_fpstate field, since the handler is not
+   supposed to return anyway, thus it doesn't matter that it's clobbered.  */
+
+/* static */ void catch_segfault (int, int, struct sigcontext *);
+
+/* Dummy function so that we can use asm with arguments.  */
+static void __attribute__ ((unused))
+__dummy__ (void)
+{
+  asm ("
+catch_segfault:
+	move.l 12(%%sp),%%a0
+	lea %c0(%%a0),%%a0
+	/* Clear the first 4 bytes to make it a null fp state, just
+	   in case the handler does return.  */
+	clr.l (%%a0)+
+	movem.l %%d2-%%d7/%%a2-%%a6,(%%a0)
+	fmovem.x %%fp2-%%fp7,11*4(%%a0)
+	jra real_catch_segfault"
+       : : "n" (offsetof (struct sigcontext, sc_fpstate)));
+}
+#define catch_segfault(a,b) \
+  __attribute__ ((unused)) real_catch_segfault(a,b)
+
+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 sigcontext *ctx)
+{
+  char regs[20][8];
+  char fpregs[11][24];
+  struct iovec iov[63], *next_iov = iov;
+  unsigned long *p = (unsigned long *) ctx->sc_fpstate + 1;
+
+#define ADD_STRING(str) \
+  next_iov->iov_base = (char *) (str); \
+  next_iov->iov_len = strlen (str); \
+  ++next_iov
+#define ADD_MEM(str, len) \
+  next_iov->iov_base = (str); \
+  next_iov->iov_len = (len); \
+  ++next_iov
+
+  /* Generate strings of register contents.  */
+  hexvalue (ctx->sc_d0, regs[0], 8);
+  hexvalue (ctx->sc_d1, regs[1], 8);
+  hexvalue (*p++, regs[2], 8);
+  hexvalue (*p++, regs[3], 8);
+  hexvalue (*p++, regs[4], 8);
+  hexvalue (*p++, regs[5], 8);
+  hexvalue (*p++, regs[6], 8);
+  hexvalue (*p++, regs[7], 8);
+  hexvalue (ctx->sc_a0, regs[8], 8);
+  hexvalue (ctx->sc_a1, regs[9], 8);
+  hexvalue (*p++, regs[10], 8);
+  hexvalue (*p++, regs[11], 8);
+  hexvalue (*p++, regs[12], 8);
+  hexvalue (*p++, regs[13], 8);
+  hexvalue (*p++, regs[14], 8);
+  hexvalue (ctx->sc_usp, regs[15], 8);
+  hexvalue (ctx->sc_pc, regs[16], 8);
+  hexvalue (ctx->sc_sr, regs[17], 4);
+  hexvalue (ctx->sc_mask, regs[18], 8);
+  hexvalue (ctx->sc_formatvec & 0xfff, regs[19], 4);
+  hexvalue (ctx->sc_fpregs[0], fpregs[0], 8);
+  hexvalue (ctx->sc_fpregs[1], fpregs[0] + 8, 8);
+  hexvalue (ctx->sc_fpregs[2], fpregs[0] + 16, 8);
+  hexvalue (ctx->sc_fpregs[3], fpregs[1], 8);
+  hexvalue (ctx->sc_fpregs[4], fpregs[1] + 8, 8);
+  hexvalue (ctx->sc_fpregs[5], fpregs[1] + 16, 8);
+  hexvalue (*p++, fpregs[2], 8);
+  hexvalue (*p++, fpregs[2] + 8, 8);
+  hexvalue (*p++, fpregs[2] + 16, 8);
+  hexvalue (*p++, fpregs[3], 8);
+  hexvalue (*p++, fpregs[3] + 8, 8);
+  hexvalue (*p++, fpregs[3] + 16, 8);
+  hexvalue (*p++, fpregs[4], 8);
+  hexvalue (*p++, fpregs[4] + 8, 8);
+  hexvalue (*p++, fpregs[4] + 16, 8);
+  hexvalue (*p++, fpregs[5], 8);
+  hexvalue (*p++, fpregs[5] + 8, 8);
+  hexvalue (*p++, fpregs[5] + 16, 8);
+  hexvalue (*p++, fpregs[6], 8);
+  hexvalue (*p++, fpregs[6] + 8, 8);
+  hexvalue (*p++, fpregs[6] + 16, 8);
+  hexvalue (*p++, fpregs[7], 8);
+  hexvalue (*p++, fpregs[7] + 8, 8);
+  hexvalue (*p++, fpregs[7] + 16, 8);
+  hexvalue (ctx->sc_fpcntl[0], fpregs[8], 8);
+  hexvalue (ctx->sc_fpcntl[1], fpregs[9], 8);
+  hexvalue (ctx->sc_fpcntl[2], fpregs[10], 8);
+
+  /* Generate the output.  */
+  ADD_STRING ("Register dump:\n\n  D0: ");
+  ADD_MEM (regs[0], 8);
+  ADD_STRING ("  D1: ");
+  ADD_MEM (regs[1], 8);
+  ADD_STRING ("  D2: ");
+  ADD_MEM (regs[2], 8);
+  ADD_STRING ("  D3: ");
+  ADD_MEM (regs[3], 8);
+  ADD_STRING ("\n  D4: ");
+  ADD_MEM (regs[4], 8);
+  ADD_STRING ("  D5: ");
+  ADD_MEM (regs[5], 8);
+  ADD_STRING ("  D6: ");
+  ADD_MEM (regs[6], 8);
+  ADD_STRING ("  D7: ");
+  ADD_MEM (regs[7], 8);
+  ADD_STRING ("\n  A0: ");
+  ADD_MEM (regs[8], 8);
+  ADD_STRING ("  A1: ");
+  ADD_MEM (regs[9], 8);
+  ADD_STRING ("  A2: ");
+  ADD_MEM (regs[10], 8);
+  ADD_STRING ("  A3: ");
+  ADD_MEM (regs[11], 8);
+  ADD_STRING ("\n  A4: ");
+  ADD_MEM (regs[12], 8);
+  ADD_STRING ("  A5: ");
+  ADD_MEM (regs[13], 8);
+  ADD_STRING ("  A6: ");
+  ADD_MEM (regs[14], 8);
+  ADD_STRING ("  A7: ");
+  ADD_MEM (regs[15], 8);
+  ADD_STRING ("\n  PC: ");
+  ADD_MEM (regs[16], 8);
+  ADD_STRING ("  SR: ");
+  ADD_MEM (regs[17], 4);
+
+  ADD_STRING ("\n\n  OldMask: ");
+  ADD_MEM (regs[18], 8);
+  ADD_STRING ("  Vector: ");
+  ADD_MEM (regs[19], 4);
+
+  ADD_STRING ("\n\n  FP0: ");
+  ADD_MEM (fpregs[0], 24);
+  ADD_STRING ("  FP1: ");
+  ADD_MEM (fpregs[1], 24);
+  ADD_STRING ("\n  FP2: ");
+  ADD_MEM (fpregs[2], 24);
+  ADD_STRING ("  FP3: ");
+  ADD_MEM (fpregs[3], 24);
+  ADD_STRING ("\n  FP4: ");
+  ADD_MEM (fpregs[4], 24);
+  ADD_STRING ("  FP5: ");
+  ADD_MEM (fpregs[5], 24);
+  ADD_STRING ("\n  FP6: ");
+  ADD_MEM (fpregs[6], 24);
+  ADD_STRING ("  FP7: ");
+  ADD_MEM (fpregs[7], 24);
+  ADD_STRING ("\n  FPCR: ");
+  ADD_MEM (fpregs[8], 8);
+  ADD_STRING ("  FPSR: ");
+  ADD_MEM (fpregs[9], 8);
+  ADD_STRING ("  FPIAR: ");
+  ADD_MEM (fpregs[10], 8);
+  ADD_STRING ("\n");
+
+  /* Write the stuff out.  */
+  writev (fd, iov, next_iov - iov);
+}
+
+#define REGISTER_DUMP register_dump (fd, ctx)