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| author | Alan Modra <amodra@gmail.com> | 2019-12-20 14:37:44 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2019-12-20 17:57:58 +1030 |
| commit | bcd9f578a96b9776e34e5cec963928f5a96b80e7 (patch) | |
| tree | 81184dfccbbea896f95a5a0eedad2c2965f55ec4 /cpu | |
| parent | e76832f125f6f005ddf3c75b7be675272568b01e (diff) | |
| download | gdb-bcd9f578a96b9776e34e5cec963928f5a96b80e7.zip gdb-bcd9f578a96b9776e34e5cec963928f5a96b80e7.tar.gz gdb-bcd9f578a96b9776e34e5cec963928f5a96b80e7.tar.bz2 | |
ubsan: or1k: left shift of negative value
cpu/
* or1korbis.cpu (f-disp26, f-disp21): Don't left shift negative values.
opcodes/
* or1k-ibld.c: Regenerate.
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/ChangeLog | 4 | ||||
| -rw-r--r-- | cpu/or1korbis.cpu | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/cpu/ChangeLog b/cpu/ChangeLog index 8755ee7..1729efd 100644 --- a/cpu/ChangeLog +++ b/cpu/ChangeLog @@ -1,3 +1,7 @@ +2019-12-20 Alan Modra <amodra@gmail.com> + + * or1korbis.cpu (f-disp26, f-disp21): Don't left shift negative values. + 2019-12-17 Alan Modra <amodra@gmail.com> * bpf.cpu (f-imm64): Avoid signed overflow. diff --git a/cpu/or1korbis.cpu b/cpu/or1korbis.cpu index 3741d4c..a8002a3 100644 --- a/cpu/or1korbis.cpu +++ b/cpu/or1korbis.cpu @@ -76,7 +76,7 @@ 26 INT ((value pc) (sra IAI (sub IAI value pc) (const 2))) - ((value pc) (add IAI (sll IAI value (const 2)) pc)) + ((value pc) (add IAI (mul IAI value (const 4)) pc)) ) ; PC relative, 21-bit, 13 shifted to right, aligned. @@ -91,7 +91,7 @@ ((value pc) (sub IAI (sra IAI value (const 13)) (sra IAI pc (const 13)))) ((value pc) - (sll IAI (add IAI value (sra IAI pc (const 13))) (const 13))) + (mul IAI (add IAI value (sra IAI pc (const 13))) (const 8192))) ) ; Immediates. |