-/* Intel 386 native support for SYSV systems (pre-SVR4).
+/* Intel 386 native support for System V systems (pre-SVR4).
Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1998,
1999, 2000, 2002 Free Software Foundation, Inc.
#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 "floatformat.h"
#include "target.h"
+
+#include "i386-tdep.h"
\f
-/* this table must line up with REGISTER_NAMES in tm-i386v.h */
-/* symbols like 'EAX' come from <sys/reg.h> */
+/* Mapping between the general-purpose registers in `struct user'
+ format and GDB's register array layout. */
static int regmap[] =
{
EAX, ECX, EDX, EBX,
DS, ES, FS, GS,
};
-/* blockend is the value of u.u_ar0, and points to the
- * place where GS is stored
- */
+/* Support for the user struct. */
-int
-i386_register_u_addr (int blockend, int regnum)
+/* Return the address of register REGNUM. BLOCKEND is the value of
+ u.u_ar0, and points to the place where GS is stored. */
+
+CORE_ADDR
+register_u_addr (CORE_ADDR blockend, int regnum)
{
struct user u;
- int fpstate;
- int ubase;
+ CORE_ADDR fpstate;
- ubase = blockend;
- /* FIXME: Should have better way to test floating point range */
- if (regnum >= FP0_REGNUM && regnum <= (FP0_REGNUM + 7))
+ if (i386_fp_regnum_p (regnum))
{
-#ifdef KSTKSZ /* SCO, and others? */
- ubase += 4 * (SS + 1) - KSTKSZ;
- fpstate = ubase + ((char *) &u.u_fps.u_fpstate - (char *) &u);
+#ifdef KSTKSZ /* SCO, and others? */
+ blockend += 4 * (SS + 1) - KSTKSZ;
+ fpstate = blockend + ((char *) &u.u_fps.u_fpstate - (char *) &u);
return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM));
#else
- fpstate = ubase + ((char *) &u.i387.st_space - (char *) &u);
+ fpstate = blockend + ((char *) &u.i387.st_space - (char *) &u);
return (fpstate + 10 * (regnum - FP0_REGNUM));
#endif
}
- else
- {
- return (ubase + 4 * regmap[regnum]);
- }
+ return (blockend + 4 * regmap[regnum]);
}
-\f
+
+/* Return the size of the user struct. */
+
int
kernel_u_size (void)
{
/* Record which address associates with which register. */
static CORE_ADDR address_lookup[DR_LASTADDR - DR_FIRSTADDR + 1];
-static int
-i386_insert_aligned_watchpoint (int, CORE_ADDR, CORE_ADDR, int, int);
+static int i386_insert_aligned_watchpoint (int, CORE_ADDR, CORE_ADDR, int,
+ int);
-static int
-i386_insert_nonaligned_watchpoint (int, CORE_ADDR, CORE_ADDR, int, int);
+static int i386_insert_nonaligned_watchpoint (int, CORE_ADDR, CORE_ADDR, int,
+ int);
/* Insert a watchpoint. */