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

 
 

bug #7667: float exception leaves R1 undefined

Submitted by:  None
Submitted on:  Tue 10 Feb 2004 06:50:58 PM UTC  
 
Category: LibrarySeverity: 6 - Security
Priority: 5 - NormalItem Group: None
Status: FixedPercent Complete: 0%
Assigned to: Joerg Wunsch <joerg_wunsch>Originator Email: -unavailable-
Open/Closed: ClosedRelease: None
Fixed Release: None

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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>
Project AdministratorIn charge of this item.
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>
Project AdministratorIn charge of this item.
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.)

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

 

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Follow 6 latest changes.

Date Changed By Updated Field Previous Value => Replaced By
Tue 14 Dec 2004 11:41:07 PM UTCjoerg_wunschStatusNone=>Fixed
  Assigned toNone=>joerg_wunsch
  Open/ClosedOpen=>Closed
Sun 12 Dec 2004 07:43:37 AM UTCjoerg_wunschSeverity4 - Important=>6 - Security
Sun 12 Dec 2004 07:42:34 AM UTCjoerg_wunschSeverity3 - Normal=>4 - Important
Mon 01 Nov 2004 10:40:55 PM UTCNoneAttached File-=>Added avr-libc.diff, #1827

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