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* i386aix-nat.c (i386_float_info): Reverse order of registers before

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passing them to print_387_status.
	(print_387_status): Don't subtract top from 7 before using it.
	* i387-tdep.c: Remove comment about AIX wanting "top" subtracted
	from 7; the above explains it.
This commit is contained in:
Jim Kingdon 1994-01-22 22:14:04 +00:00
parent a4738d5ed2
commit dfd4c728fa
3 changed files with 21 additions and 10 deletions
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8
gdb/ChangeLog
View File

@ -1,3 +1,11 @@
Sat Jan 22 17:08:48 1994 Jim Kingdon (kingdon@lioth.cygnus.com)
* i386aix-nat.c (i386_float_info): Reverse order of registers before
passing them to print_387_status.
(print_387_status): Don't subtract top from 7 before using it.
* i387-tdep.c: Remove comment about AIX wanting "top" subtracted
from 7; the above explains it.
Sat Jan 22 20:25:11 1994 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
* mips-tdep.c (init_extra_frame_info): Use frame relative stack

20
gdb/i386aix-nat.c
View File

@ -145,16 +145,16 @@ print_387_status (status, ep)
printf_unfiltered ("%s; ", local_hex_string(ep->eip));
printf_unfiltered ("operand %s", local_hex_string(ep->operand_seg));
printf_unfiltered (":%s\n", local_hex_string(ep->operand));
top = 7- ((ep->status >> 11) & 7);
top = ((ep->status >> 11) & 7);
printf_unfiltered ("regno tag msb lsb value\n");
for (fpreg = 7; fpreg >= 0; fpreg--)
{
double val;
printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : " ", fpreg);
switch ((ep->tag >> ((7 - fpreg) * 2)) & 3)
{
case 0: printf_unfiltered ("valid "); break;
@ -177,6 +177,10 @@ i386_float_info ()
{
struct env387 fps;
int fpsaved = 0;
/* We need to reverse the order of the registers. Apparently AIX stores
the highest-numbered ones first. */
struct env387 fps_fixed;
int i;
if (inferior_pid)
{
@ -210,8 +214,10 @@ i386_float_info ()
MIN(10, sizeof(fps) - offset));
}
}
print_387_status (0, (struct env387 *)&fps);
fps_fixed = fps;
for (i = 0; i < 8; ++i)
memcpy (fps_fixed.regs[i], fps.regs[7 - i], 10);
print_387_status (0, &fps_fixed);
}
/* Fetch one register. */

3
gdb/i387-tdep.c
View File

@ -108,8 +108,5 @@ print_387_status_word (status)
(status & 0x0200) != 0,
(status & 0x0100) != 0);
/* FIXME: Someone claims this should be 7 - (status >> 11) & 7 for AIX.
What's the story? Is the following just wrong or are differing
notations in use? */
printf_unfiltered ("top %d\n", (status >> 11) & 7);
}