ns32k displacement offsets in gas

Thread View: gnu.utils.bug

1 messages

[T] Back to Threads [V] Tree View [G] Group Articles

1 total messages Started by taylor Fri, 05 May 1989 04:08

#1591

Author: taylor
Date: Fri, 05 May 1989 04:08

28 lines
1291 bytes

The displacement offset boundaries in ns32k.c are slightly wrong.

In function convert_iif(), there's the `if' statement:

	if (-0x40000000<=expP.X_add_number &&
	    exprP.X_add_number<=0x3fffffff) {

the limits should be -0x1f000000 and 0x1fffffff.  That is, the `if'
statement should be:

	if (-0x1f000000<=expP.X_add_number &&
	    exprP.X_add_number<=0x1fffffff) {

And similarly in md_number_to_disp, in the `if' statement:

	if (val < -0x20000000 || vaxl >= 0x20000000) as_warn("Double word displacement out of range");

the lower limit should be -0x1f000000 not -0x20000000.

Note:  The reason the lower limit is -0x1f000000 and not -0x20000000 is
that, according to Nat'l Semi's data sheet on the ns32532, ``the pattern
11100000 for the most significant byte of the displacement is reserved
by National for future enhancements''.

David
--
David Taylor
taylor@think.com, ...!think!taylor

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads