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| author | Alan Modra <amodra@gmail.com> | 2020-01-04 08:11:43 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-01-04 19:20:33 +1030 |
| commit | c9ae58fe32e88914b67988d5bfde184f79c7070f (patch) | |
| tree | 0309d33de137777438078077b3ed9fa1c8cec76d /cpu | |
| parent | 5f57d4ecf51c2f420dae56dfb9fc525d1979ec7c (diff) | |
| download | gdb-c9ae58fe32e88914b67988d5bfde184f79c7070f.zip gdb-c9ae58fe32e88914b67988d5bfde184f79c7070f.tar.gz gdb-c9ae58fe32e88914b67988d5bfde184f79c7070f.tar.bz2 | |
ubsan: m32r: left shift of negative value
cpu/
* m32r.cpu (f-disp8): Avoid left shift of negative values.
(f-disp16, f-disp24): Likewise.
opcodes/
* m32r-ibld.c: Regenerate.
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/ChangeLog | 5 | ||||
| -rw-r--r-- | cpu/m32r.cpu | 6 |
2 files changed, 8 insertions, 3 deletions
diff --git a/cpu/ChangeLog b/cpu/ChangeLog index 3e6a8d8..09311d1 100644 --- a/cpu/ChangeLog +++ b/cpu/ChangeLog @@ -1,3 +1,8 @@ +2020-02-04 Alan Modra <amodra@gmail.com> + + * m32r.cpu (f-disp8): Avoid left shift of negative values. + (f-disp16, f-disp24): Likewise. + 2019-12-23 Alan Modra <amodra@gmail.com> * iq2000.cpu (f-offset): Avoid left shift of negative values. diff --git a/cpu/m32r.cpu b/cpu/m32r.cpu index 003c848..a239525 100644 --- a/cpu/m32r.cpu +++ b/cpu/m32r.cpu @@ -478,13 +478,13 @@ (dnf f-hi16 "high 16 bits" (SIGN-OPT) 16 16) (df f-disp8 "disp8, slot unknown" (PCREL-ADDR RELOC) 8 8 INT ((value pc) (sra WI (sub WI value (and WI pc (const -4))) (const 2))) - ((value pc) (add WI (sll WI value (const 2)) (and WI pc (const -4))))) + ((value pc) (add WI (mul WI value (const 4)) (and WI pc (const -4))))) (df f-disp16 "disp16" (PCREL-ADDR RELOC) 16 16 INT ((value pc) (sra WI (sub WI value pc) (const 2))) - ((value pc) (add WI (sll WI value (const 2)) pc))) + ((value pc) (add WI (mul WI value (const 4)) pc))) (df f-disp24 "disp24" (PCREL-ADDR RELOC) 8 24 INT ((value pc) (sra WI (sub WI value pc) (const 2))) - ((value pc) (add WI (sll WI value (const 2)) pc))) + ((value pc) (add WI (mul WI value (const 4)) pc))) (dnf f-op23 "op2.3" () 9 3) (dnf f-op3 "op3" () 14 2) |