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authorAndreas Schwab <schwab@suse.de>1998-08-28 01:42:42 +0000
committerAndreas Schwab <schwab@suse.de>1998-08-28 01:42:42 +0000
commitf35b9f2a88e237e2849417163d2bc72215409de6 (patch)
treedd3ef56243d4a87920d737f81310f8b2aa997d24
parent1af688f19cfe38e90eab09ba481e537a2c9a0703 (diff)
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* sysdeps/unix/sysv/linux/m68k/register-dump.h: New file.
-rw-r--r--sysdeps/unix/sysv/linux/m68k/register-dump.h214
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)