[src/sommerfeld_i386mp_1]: src/sys/arch/i386/include * Allow machine-dependen...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/1a2f82380996
branches:  sommerfeld_i386mp_1
changeset: 482455:1a2f82380996
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed Dec 05 00:58:07 2001 +0000

description:
* Allow machine-dependent code to specify hooks for ptrace(2)
  (__HAVE_PTRACE_MACHDEP) and procfs (__HAVE_PROCFS_MACHDEP).
  These changes will allow platforms like x86 (XMM) and PowerPC
  (AltiVec) to export extended register sets in a sane manner.

* Use __HAVE_PTRACE_MACHDEP to export x86 XMM registers (standard
  FP + SSE/SSE2) using PT_{GET,SET}XMMREGS (in the machdep
  ptrace request space).
* Use __HAVE_PROCFS_MACHDEP to export x86 XMM registers via
  /proc/N/xmmregs in procfs.

diffstat:

 sys/arch/i386/include/reg.h |  114 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 114 insertions(+), 0 deletions(-)

diffs (118 lines):

diff -r e616aabc50f6 -r 1a2f82380996 sys/arch/i386/include/reg.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/i386/include/reg.h       Wed Dec 05 00:58:07 2001 +0000
@@ -0,0 +1,114 @@
+/*     $NetBSD: reg.h,v 1.17.2.2 2001/12/05 00:58:07 thorpej Exp $     */
+
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)reg.h       5.5 (Berkeley) 1/18/91
+ */
+
+#ifndef _I386_REG_H_
+#define _I386_REG_H_
+
+#include <machine/frame.h>
+
+/*
+ * Location of the users' stored
+ * registers within appropriate frame of 'trap' and 'syscall', relative to
+ * base of stack frame.
+ *
+ * XXX these should be nuked. Currently used by math_emulate.c, and they
+ *     used to be used in the NetBSD/i386 bits of gdb, but no more.
+ */
+
+/* When referenced during a trap/exception, registers are at these offsets */
+
+#define        tES     (offsetof(struct trapframe, tf_es) / sizeof (int))
+#define        tDS     (offsetof(struct trapframe, tf_ds) / sizeof (int))
+#define        tEDI    (offsetof(struct trapframe, tf_edi) / sizeof (int))
+#define        tESI    (offsetof(struct trapframe, tf_esi) / sizeof (int))
+#define        tEBP    (offsetof(struct trapframe, tf_ebp) / sizeof (int))
+#define        tEBX    (offsetof(struct trapframe, tf_ebx) / sizeof (int))
+#define        tEDX    (offsetof(struct trapframe, tf_edx) / sizeof (int))
+#define        tECX    (offsetof(struct trapframe, tf_ecx) / sizeof (int))
+#define        tEAX    (offsetof(struct trapframe, tf_eax) / sizeof (int))
+
+#define        tEIP    (offsetof(struct trapframe, tf_eip) / sizeof (int))
+#define        tCS     (offsetof(struct trapframe, tf_cs) / sizeof (int))
+#define        tEFLAGS (offsetof(struct trapframe, tf_eflags) / sizeof (int))
+#define        tESP    (offsetof(struct trapframe, tf_esp) / sizeof (int))
+#define        tSS     (offsetof(struct trapframe, tf_ss) / sizeof (int))
+
+/*
+ * Registers accessible to ptrace(2) syscall for debugger
+ * The machine-dependent code for PT_{SET,GET}REGS needs to
+ * use whichver order, defined above, is correct, so that it
+ * is all invisible to the user.
+ */
+struct reg {
+       int     r_eax;
+       int     r_ecx;
+       int     r_edx;
+       int     r_ebx;
+       int     r_esp;
+       int     r_ebp;
+       int     r_esi;
+       int     r_edi;
+       int     r_eip;
+       int     r_eflags;
+       int     r_cs;
+       int     r_ss;
+       int     r_ds;
+       int     r_es;
+       int     r_fs;
+       int     r_gs;
+};
+
+struct fpreg {
+       /*
+        * XXX
+        * Fill this in with real info.
+        */
+       char    __data[108];
+};
+
+struct xmmregs {
+       /*
+        * XXX
+        * Fill this in with real info.
+        */
+       char    __data[512];
+};
+
+#endif /* !_I386_REG_H_ */