void _initialize_i386_tdep PARAMS ((void));
+/* i386_register_byte[i] is the offset into the register file of the
+ start of register number i. We initialize this from
+ i386_register_raw_size. */
+int i386_register_byte[MAX_NUM_REGS];
+
+/* i386_register_raw_size[i] is the number of bytes of storage in the
+ actual machine representation for register i. */
+int i386_register_raw_size[MAX_NUM_REGS] = {
+ 4, 4, 4, 4,
+ 4, 4, 4, 4,
+ 4, 4, 4, 4,
+ 4, 4, 4, 4,
+ 10, 10, 10, 10,
+ 10, 10, 10, 10,
+ 4, 4, 4, 4,
+ 4, 4, 4, 4,
+ 16, 16, 16, 16,
+ 16, 16, 16, 16,
+ 4
+};
+
+/* i386_register_virtual_size[i] is the size in bytes of the virtual
+ type of register i. */
+int i386_register_virtual_size[MAX_NUM_REGS];
+
+
/* This is the variable the is set with "set disassembly-flavor",
and its legitimate values. */
static char att_flavor[] = "att";
};
static char *disassembly_flavor = att_flavor;
+static void i386_print_register PARAMS ((char *, int, int));
+
/* This is used to keep the bfd arch_info in sync with the disassembly flavor. */
static void set_disassembly_flavor_sfunc PARAMS ((char *, int, struct cmd_list_element *));
-static void set_disassembly_flavor ();
-
-void (*disassembly_flavor_hook) PARAMS ((char *args, int from_tty));
+static void set_disassembly_flavor PARAMS ((void));
/* Stdio style buffering was used to minimize calls to ptrace, but this
buffering did not take into account that the code section being accessed
char regbuf[REGISTER_BYTES];
char *valbuf;
{
-/* On AIX, floating point values are returned in floating point registers. */
-#ifdef I386_AIX_TARGET
+ /* On AIX and i386 GNU/Linux, floating point values are returned in
+ floating point registers. */
+#if defined(I386_AIX_TARGET) || defined(I386_GNULINUX_TARGET)
if (TYPE_CODE_FLT == TYPE_CODE (type))
{
double d;
/* 387 %st(0), gcc uses this */
floatformat_to_double (&floatformat_i387_ext,
+#if defined(FPDATA_REGNUM)
+ ®buf[REGISTER_BYTE (FPDATA_REGNUM)],
+#else /* !FPDATA_REGNUM */
®buf[REGISTER_BYTE (FP0_REGNUM)],
+#endif /* FPDATA_REGNUM */
+
&d);
store_floating (valbuf, TYPE_LENGTH (type), d);
}
else
-#endif /* I386_AIX_TARGET */
+#endif /* I386_AIX_TARGET || I386_GNULINUX_TARGET*/
{
+#if defined(LOW_RETURN_REGNUM)
+ int len = TYPE_LENGTH (type);
+ int low_size = REGISTER_RAW_SIZE (LOW_RETURN_REGNUM);
+ int high_size = REGISTER_RAW_SIZE (HIGH_RETURN_REGNUM);
+
+ if (len <= low_size)
+ memcpy (valbuf, regbuf + REGISTER_BYTE (LOW_RETURN_REGNUM), len);
+ else if (len <= (low_size + high_size))
+ {
+ memcpy (valbuf,
+ regbuf + REGISTER_BYTE (LOW_RETURN_REGNUM),
+ low_size);
+ memcpy (valbuf + low_size,
+ regbuf + REGISTER_BYTE (HIGH_RETURN_REGNUM),
+ len - low_size);
+ }
+ else
+ error ("GDB bug: i386-tdep.c (i386_extract_return_value): Don't know how to find a return value %d bytes long", len);
+#else /* !LOW_RETURN_REGNUM */
memcpy (valbuf, regbuf, TYPE_LENGTH (type));
+#endif /* LOW_RETURN_REGNUM */
}
}
struct cmd_list_element *c;
{
set_disassembly_flavor ();
-
- if (disassembly_flavor_hook != NULL)
- disassembly_flavor_hook (args, from_tty);
}
static void
set_architecture_from_arch_mach (bfd_arch_i386, bfd_mach_i386_i386_intel_syntax);
}
+
void
_initialize_i386_tdep ()
{
- struct cmd_list_element *new_cmd;
+ /* Initialize the table saying where each register starts in the
+ register file. */
+ {
+ int i, offset;
+
+ offset = 0;
+ for (i = 0; i < MAX_NUM_REGS; i++)
+ {
+ i386_register_byte[i] = offset;
+ offset += i386_register_raw_size[i];
+ }
+ }
+
+ /* Initialize the table of virtual register sizes. */
+ {
+ int i;
+
+ for (i = 0; i < MAX_NUM_REGS; i++)
+ i386_register_virtual_size[i] = TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (i));
+ }
tm_print_insn = gdb_print_insn_i386;
tm_print_insn_info.mach = bfd_lookup_arch (bfd_arch_i386, 0)->mach;
/* Add the variable that controls the disassembly flavor */
+ {
+ struct cmd_list_element *new_cmd;
- new_cmd = add_set_enum_cmd ("disassembly-flavor", no_class,
- valid_flavors,
- (char *) &disassembly_flavor,
- "Set the disassembly flavor, the valid values are \"att\" and \"intel\", \
+ new_cmd = add_set_enum_cmd ("disassembly-flavor", no_class,
+ valid_flavors,
+ (char *) &disassembly_flavor,
+ "Set the disassembly flavor, the valid values are \"att\" and \"intel\", \
and the default value is \"att\".",
- &setlist);
- new_cmd->function.sfunc = set_disassembly_flavor_sfunc;
- add_show_from_set (new_cmd, &showlist);
+ &setlist);
+ new_cmd->function.sfunc = set_disassembly_flavor_sfunc;
+ add_show_from_set (new_cmd, &showlist);
+ }
/* Finally, initialize the disassembly flavor to the default given
in the disassembly_flavor variable */
set_disassembly_flavor ();
-
}