i386v host/target/native separation

gdb/.Sanitize

@@ -105,9 +105,9 @@ hppah-xdep.c
 i386-pinsn.c
 i386-stub.c
 i386-tdep.c
-i386-xdep.c
 i386b-nat.c
 i386mach-nat.c
+i386v-nat.c
 i387-tdep.c
 i960-pinsn.c
 i960-tdep.c
@@ -146,6 +146,7 @@ nindy-tdep.c
 nm-delta88.h
 nm-i386bsd.h
 nm-i386mach.h
+nm-i386v.h
 nm-irix3.h
 nm-irix4.h
 nm-linux.h

gdb/ChangeLog

@@ -1,9 +1,22 @@
 Fri Oct 16 13:06:08 1992  K. Richard Pixley  (rich@sendai.cygnus.com)
 
+	Native support for i386v (untested).
+
+	* config/i386v.mh (XDEPFILES): removed infptrace.o inftarg.o
+	  fork-child.o coredep.o corelow.o i386-xdep.o i387-tdep.o.
+	  (NAT_FILE, NATDEPFILES): new macros.
+	* config/i386v.mt (TDEPFILES): removed exec.o, added i387-tdep.o.
+	* i386-xdep.c: removed.
+	* Makefile.in (HFILES): added nm-i386v.h
+	* i386v-nat.c, nm-i386v.h: new file.
+	* xm-i386v.h: (REGISTER_U_ADDR, i386_register_u_addr): removed to
+	  nm-i386v.h.
+	* tm-i386v.h (FLOAT_INFO): removed.
+
 	Native support for linux (untested).
 
 	* config/linux.mh (XDEPFILES): removed infptrace.o inftarg.o
-	  fork-child.o coredep.o corelow.o i387-tdep.o.
+	  fork-child.o coredep.o corelow.o i387-tdep.o i386-xdep.o.
 	  (NAT_FILE, NATDEPFILES): new macros.
 	* config/linux.mt (TDEPFILES): removed exec.o, added i387-tdep.o.
 	* Makefile.in (HFILES): added nm-linux.h.

gdb/Makefile.in

@@ -255,7 +255,7 @@ HFILES=	breakpoint.h buildsym.h call-cmds.h command.h defs.h \
 	xm-m68k.h xm-sparc.h xm-sysv4.h xm-vax.h \
 	nm-irix3.h nm-irix4.h nm-mips.h nm-rs6000.h nm-sun2.h nm-sun3.h \
 	nm-sun4os4.h nm-trash.h nm-news.h nm-ultra3.h nm-m88k.h \
-	nm-i386mach.h nm-sun386.h nm-linux.h
+	nm-i386mach.h nm-sun386.h nm-linux.h nm-i386v.h
 
 REMOTE_EXAMPLES = m68k-stub.c i386-stub.c sparc-stub.c rem-multi.shar
 

gdb/config/i386v.mh

@@ -1,6 +1,8 @@
 # Host: Intel 386 running System V
-XDEPFILES= infptrace.o inftarg.o fork-child.o coredep.o corelow.o i386-xdep.o i387-tdep.o
+XDEPFILES= 
 XM_FILE= xm-i386v.h
+NAT_FILE= nm-i386v.h
+NATDEPFILES= exec.o infptrace.o inftarg.o fork-child.o coredep.o corelow.o i386v-nat.o
 XM_CLIBS= -lPW
 SYSV_DEFINE=-DSYSV
 REGEX=regex.o

gdb/config/i386v.mt

@@ -1,3 +1,3 @@
 # Target: Intel 386 running System V
-TDEPFILES= exec.o i386-tdep.o i386-pinsn.o
+TDEPFILES= i386-tdep.o i386-pinsn.o i387-tdep.o
 TM_FILE= tm-i386v.h

gdb/config/linux.mh

@@ -1,8 +1,8 @@
 # Host: Intel 386 running System V
-XDEPFILES= i386-xdep.o
+XDEPFILES= 
 XM_FILE= xm-linux.h
 NAT_FILE= nm-linux.h
-NATDEPFILES= exec.o infptrace.o inftarg.o fork-child.o coredep.o corelow.o 
+NATDEPFILES= exec.o infptrace.o inftarg.o fork-child.o coredep.o corelow.o i386v-nat.o
 XM_CLIBS=
 TERMLIB=
 SYSV_DEFINE=-DSYSV

gdb/i386v-nat.c

@@ -0,0 +1,168 @@
+/* Intel 386 native support.
+   Copyright (C) 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "defs.h"
+#include "frame.h"
+#include "inferior.h"
+#include "language.h"
+#include "gdbcore.h"
+
+#ifdef USG
+#include <sys/types.h>
+#endif
+
+#include <sys/param.h>
+#include <sys/dir.h>
+#include <signal.h>
+#include <sys/user.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+
+#include <sys/file.h>
+#include <sys/stat.h>
+
+#include <sys/reg.h>
+#include "ieee-float.h"
+
+#include "target.h"
+
+extern struct ext_format ext_format_i387;
+
+/* this table must line up with REGISTER_NAMES in tm-i386v.h */
+/* symbols like 'EAX' come from <sys/reg.h> */
+static int regmap[] = 
+{
+  EAX, ECX, EDX, EBX,
+  UESP, EBP, ESI, EDI,
+  EIP, EFL, CS, SS,
+  DS, ES, FS, GS,
+};
+
+/* blockend is the value of u.u_ar0, and points to the
+ * place where GS is stored
+ */
+
+int
+i386_register_u_addr (blockend, regnum)
+     int blockend;
+     int regnum;
+{
+#if 0
+  /* this will be needed if fp registers are reinstated */
+  /* for now, you can look at them with 'info float'
+   * sys5 wont let you change them with ptrace anyway
+   */
+  if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM) 
+    {
+      int ubase, fpstate;
+      struct user u;
+      ubase = blockend + 4 * (SS + 1) - KSTKSZ;
+      fpstate = ubase + ((char *)&u.u_fpstate - (char *)&u);
+      return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM));
+    } 
+  else
+#endif
+    return (blockend + 4 * regmap[regnum]);
+  
+}
+
+#if 0
+/* using FLOAT_INFO as is would be a problem.  FLOAT_INFO is called
+   via a command xxx and eventually calls ptrace without ever having
+   traversed the target vector.  This would be terribly impolite
+   behaviour for a sun4 hosted remote gdb.
+
+   A fix might be to move this code into the "info registers" command.
+   rich@cygnus.com 15 Sept 92. */
+i386_float_info ()
+{
+  struct user u; /* just for address computations */
+  int i;
+  /* fpstate defined in <sys/user.h> */
+  struct fpstate *fpstatep;
+  char buf[sizeof (struct fpstate) + 2 * sizeof (int)];
+  unsigned int uaddr;
+  char fpvalid = 0;
+  unsigned int rounded_addr;
+  unsigned int rounded_size;
+  extern int corechan;
+  int skip;
+  
+  uaddr = (char *)&u.u_fpvalid - (char *)&u;
+  if (target_has_execution)
+    {
+      unsigned int data;
+      unsigned int mask;
+      
+      rounded_addr = uaddr & -sizeof (int);
+      data = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) rounded_addr, 0);
+      mask = 0xff << ((uaddr - rounded_addr) * 8);
+      
+      fpvalid = ((data & mask) != 0);
+    } 
+#if 0
+  else 
+    {
+      if (lseek (corechan, uaddr, 0) < 0)
+	perror ("seek on core file");
+      if (myread (corechan, &fpvalid, 1) < 0) 
+	perror ("read on core file");
+      
+    }
+#endif	/* no core support yet */
+  
+  if (fpvalid == 0) 
+    {
+      printf ("no floating point status saved\n");
+      return;
+    }
+  
+  uaddr = (char *)&U_FPSTATE(u) - (char *)&u;
+  if (target_has_execution)
+    {
+      int *ip;
+      
+      rounded_addr = uaddr & -sizeof (int);
+      rounded_size = (((uaddr + sizeof (struct fpstate)) - uaddr) +
+		      sizeof (int) - 1) / sizeof (int);
+      skip = uaddr - rounded_addr;
+      
+      ip = (int *)buf;
+      for (i = 0; i < rounded_size; i++) 
+	{
+	  *ip++ = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) rounded_addr, 0);
+	  rounded_addr += sizeof (int);
+	}
+    } 
+#if 0
+  else 
+    {
+      if (lseek (corechan, uaddr, 0) < 0)
+	perror_with_name ("seek on core file");
+      if (myread (corechan, buf, sizeof (struct fpstate)) < 0) 
+	perror_with_name ("read from core file");
+      skip = 0;
+    }
+ #endif	/* 0 */ 
+
+  fpstatep = (struct fpstate *)(buf + skip);
+  print_387_status (fpstatep->status, (struct env387 *)fpstatep->state);
+}
+
+#endif /* never */

gdb/nm-i386v.h

@@ -0,0 +1,36 @@
+/* Native support for i386.
+   Copyright 1986, 1987, 1989, 1992 Free Software Foundation, Inc.
+   Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu), July 1988.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#if 0
+/* code to execute to print interesting information about the
+   floating point processor (if any)
+   No need to define if there is nothing to do.
+   On the 386, unfortunately this code is host-dependent (and lives
+   in the i386-xdep.c file), so we can't
+   do this unless we *know* we aren't cross-debugging.  FIXME.
+ */
+#define FLOAT_INFO { i386_float_info (); }
+#endif /*0*/
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+	(addr) = i386_register_u_addr ((blockend),(regno));
+
+extern int
+i386_register_u_addr PARAMS ((int, int));

gdb/tm-i386v.h

@@ -99,17 +99,6 @@ i386_skip_prologue PARAMS ((int));
 
 #define INVALID_FLOAT(p, len) (0)
 
-#if 0
-/* code to execute to print interesting information about the
-   floating point processor (if any)
-   No need to define if there is nothing to do.
-   On the 386, unfortunately this code is host-dependent (and lives
-   in the i386-xdep.c file), so we can't
-   do this unless we *know* we aren't cross-debugging.  FIXME.
- */
-#define FLOAT_INFO { i386_float_info (); }
-#endif /*0*/
-
 /* Say how long (ordinary) registers are.  */
 
 #define REGISTER_TYPE long

gdb/xm-i386v.h

@@ -1,4 +1,4 @@
-/* Macro defintions for i386.
+/* Host support for i386.
    Copyright 1986, 1987, 1989, 1992 Free Software Foundation, Inc.
    Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu), July 1988.
 
@@ -43,8 +43,3 @@ on those where it does, it occurs quite reliably.  */
 
 #define KERNEL_U_ADDR 0xe0000000
 
-#define REGISTER_U_ADDR(addr, blockend, regno) \
-	(addr) = i386_register_u_addr ((blockend),(regno));
-
-extern int
-i386_register_u_addr PARAMS ((int, int));