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* top.c (target_byte_order_auto): New static variable.

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(set_endian): Mention that ``auto'' is permitted.
	(set_endian_auto): New static function.
	(show_endian): Change message based on target_byte_order_auto.
	(set_endian_from_file): New function.
	(init_main): Add command ``auto'' to endianlist.
	* exec.c (exec_file_command): Call set_endian_from_file.
	* defs.h (set_endian_from_file): Declare.
This commit is contained in:
Ian Lance Taylor
1994-10-07 16:20:21 +00:00
parent c9228cfe64
commit b83ed01952
3 changed files with 84 additions and 17 deletions
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57
gdb/top.c
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@ -100,6 +100,8 @@ static void set_endian_big PARAMS ((char *, int));
static void set_endian_little PARAMS ((char *, int));
static void set_endian_auto PARAMS ((char *, int));
static void show_endian PARAMS ((char *, int));
#endif
@ -2654,13 +2656,15 @@ echo_command (text, from_tty)
int target_byte_order = TARGET_BYTE_ORDER_DEFAULT;
static int target_byte_order_auto = 1;
/* Called if the user enters ``set endian'' without an argument. */
static void
set_endian (args, from_tty)
char *args;
int from_tty;
{
printf_unfiltered ("\"set endian\" must be followed by \"big\" or \"little\".\n");
printf_unfiltered ("\"set endian\" must be followed by \"auto\", \"big\" or \"little\".\n");
show_endian (args, from_tty);
}
@ -2671,6 +2675,7 @@ set_endian_big (args, from_tty)
int from_tty;
{
target_byte_order = BIG_ENDIAN;
target_byte_order_auto = 0;
}
/* Called by ``set endian little''. */
@ -2680,6 +2685,16 @@ set_endian_little (args, from_tty)
int from_tty;
{
target_byte_order = LITTLE_ENDIAN;
target_byte_order_auto = 0;
}
/* Called by ``set endian auto''. */
static void
set_endian_auto (args, from_tty)
char *args;
int from_tty;
{
target_byte_order_auto = 1;
}
/* Called by ``show endian''. */
@ -2688,11 +2703,45 @@ show_endian (args, from_tty)
char *args;
int from_tty;
{
printf_unfiltered ("The target is assumed to be %s endian.\n",
TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
const char *msg =
(target_byte_order_auto
? "The target endianness is set automatically (currently %s endian)\n"
: "The target is assumed to be %s endian\n");
printf_unfiltered (msg, TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
}
#endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
/* Set the endianness from a BFD. */
void
set_endian_from_file (abfd)
bfd *abfd;
{
#ifdef TARGET_BYTE_ORDER_SELECTABLE
int want;
if (abfd->xvec->byteorder_big_p)
want = BIG_ENDIAN;
else
want = LITTLE_ENDIAN;
if (target_byte_order_auto)
target_byte_order = want;
else if (target_byte_order != want)
warning ("%s endian file does not match %s endian target.",
want == BIG_ENDIAN ? "big" : "little",
TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
#else /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */
if (abfd->xvec->byteorder_big_p
? TARGET_BYTE_ORDER != BIG_ENDIAN
: TARGET_BYTE_ORDER == BIG_ENDIAN)
warning ("%s endian file does not match %s endian target.",
want == BIG_ENDIAN ? "big" : "little",
TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
#endif /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */
}
/* Functions to manipulate command line editing control variables. */
@ -2925,6 +2974,8 @@ init_main ()
"Set target as being big endian.", &endianlist);
add_cmd ("little", class_support, set_endian_little,
"Set target as being little endian.", &endianlist);
add_cmd ("auto", class_support, set_endian_auto,
"Select target endianness automatically.", &endianlist);
add_cmd ("endian", class_support, show_endian,
"Show endianness of target.", &showlist);