bugAVR C Runtime Library - Bugs: bug #7667, float exception leaves R1 undefined

 
 

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bug #7667: float exception leaves R1 undefined

Submitter:  None
Submitted:  Tue 10 Feb 2004 06:50:58 PM UTC
   
 
Category:  Library Severity:  6 - Security
Priority:  5 - Normal Item Group:  None
Status:  Fixed Assigned to:  joerg_wunsch
Percent Complete:  0% Originator Email:  -email is unavailable-
Open/Closed:  Closed Release:  None
Fixed Release:  None

Tue 14 Dec 2004 11:41:07 PM UTC, comment #3: 

The suggested fix has been applied to rev 1.4 of fp_split.S,
and merged into the 1.0 branch as well.

Joerg Wunsch <joerg_wunsch>
Group administrator
Sun 12 Dec 2004 07:42:34 AM UTC, comment #2: 

Bumped priority as the bug destroys the
contents of a register.

Joerg Wunsch <joerg_wunsch>
Group administrator
Mon 01 Nov 2004 10:40:55 PM UTC, comment #1: 

The reason consists in function __fp_split (more precisely a set of
functions). Having found an invalid number, it deletes 2 bytes from a
stack and jumps on 'ret' on earlier address of return. Thus __fp_merge is excluded.
    Addition of the instruction `clr r1' in `fp_split.S' corrects this mistake.

Anonymous
Tue 10 Feb 2004 06:50:58 PM UTC, original submission:  

__subsf3 / __addsf3  leaves R1 undefined when returning via fp_split_nan

Anonymous

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attached Files
file #1955:  avr-libc.diff added by None (445B - text/x-diff - Patch for `fp_split.S'.)

 

Depends on the following items: None found

Items that depend on this one: None found

 

CC list is empty

 

Follow 6 latest changes.

Date Changed by Updated Field Previous Value => Replaced by
2004-12-14 joerg_wunsch StatusNone Fixed
    Assigned toNone joerg_wunsch
    Open/ClosedOpen Closed
2004-12-12 joerg_wunsch Severity4 - Important 6 - Security
2004-12-12 joerg_wunsch Severity3 - Normal 4 - Important
2004-11-01 None Attached File- Added avr-libc.diff, #1827

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