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| author | Alan Modra <amodra@gmail.com> | 2020-01-04 19:53:19 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-01-06 21:53:51 +1030 |
| commit | cc6aa1a6e0a8f2b3eda496aef0b3579a8c2b5951 (patch) | |
| tree | 2e7d6d72669759333e04abf39647fd9a5afee675 /cpu/ChangeLog | |
| parent | 85d8681747faa317c9934f658dcf8749e945ea8c (diff) | |
| download | gdb-cc6aa1a6e0a8f2b3eda496aef0b3579a8c2b5951.zip gdb-cc6aa1a6e0a8f2b3eda496aef0b3579a8c2b5951.tar.gz gdb-cc6aa1a6e0a8f2b3eda496aef0b3579a8c2b5951.tar.bz2 | |
ubsan: m32c: left shift of negative value
There are probably a lot more of these still here.
cpu/
* m32c.cpu (f-dsp-8-u16, f-dsp-8-s16): Rearrange to mask any sign
bits before shifting rather than masking after shifting.
(f-dsp-16-u16, f-dsp-16-s16, f-dsp-32-u16, f-dsp-32-s16): Likewise.
(f-dsp-40-u16, f-dsp-40-s16, f-dsp-48-u16, f-dsp-48-s16): Likewise.
(f-dsp-64-u16, f-dsp-8-s24): Likewise.
(f-bitbase32-16-s19-unprefixed): Avoid signed left shift.
opcodes/
* m32c-ibld.c: Regenerate.
Diffstat (limited to 'cpu/ChangeLog')
| -rw-r--r-- | cpu/ChangeLog | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/cpu/ChangeLog b/cpu/ChangeLog index 09311d1..a5d0843 100644 --- a/cpu/ChangeLog +++ b/cpu/ChangeLog @@ -1,4 +1,13 @@ -2020-02-04 Alan Modra <amodra@gmail.com> +2020-01-06 Alan Modra <amodra@gmail.com> + + * m32c.cpu (f-dsp-8-u16, f-dsp-8-s16): Rearrange to mask any sign + bits before shifting rather than masking after shifting. + (f-dsp-16-u16, f-dsp-16-s16, f-dsp-32-u16, f-dsp-32-s16): Likewise. + (f-dsp-40-u16, f-dsp-40-s16, f-dsp-48-u16, f-dsp-48-s16): Likewise. + (f-dsp-64-u16, f-dsp-8-s24): Likewise. + (f-bitbase32-16-s19-unprefixed): Avoid signed left shift. + +2020-01-04 Alan Modra <amodra@gmail.com> * m32r.cpu (f-disp8): Avoid left shift of negative values. (f-disp16, f-disp24): Likewise. |