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authorAlan Modra <amodra@gmail.com>2020-01-11 12:32:11 +1030
committerAlan Modra <amodra@gmail.com>2020-01-13 12:12:05 +1030
commit202e762b322444344827acbf98162fcb2910e0dd (patch)
tree16e2e65d75ba1e4fb0c66277c2955eb8fd2c322a /cpu
parent7ef412cf72a197d68e532604cc1fa21351adc858 (diff)
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ubsan: fr30: left shift of negative value
cpu/ * fr30.cpu (f-disp9, f-disp10, f-s10, f-rel9, f-rel12): Don't left shift signed values. opcodes/ * fr30-ibld.c: Regenerate.
Diffstat (limited to 'cpu')
-rw-r--r--cpu/ChangeLog5
-rw-r--r--cpu/fr30.cpu10
2 files changed, 10 insertions, 5 deletions
diff --git a/cpu/ChangeLog b/cpu/ChangeLog
index a5d0843..cd40af4 100644
--- a/cpu/ChangeLog
+++ b/cpu/ChangeLog
@@ -1,3 +1,8 @@
+2020-01-13 Alan Modra <amodra@gmail.com>
+
+ * fr30.cpu (f-disp9, f-disp10, f-s10, f-rel9, f-rel12): Don't
+ left shift signed values.
+
2020-01-06 Alan Modra <amodra@gmail.com>
* m32c.cpu (f-dsp-8-u16, f-dsp-8-s16): Rearrange to mask any sign
diff --git a/cpu/fr30.cpu b/cpu/fr30.cpu
index 84c32cf..07bf1da 100644
--- a/cpu/fr30.cpu
+++ b/cpu/fr30.cpu
@@ -193,15 +193,15 @@
(df f-disp8 "8 bit signed offset" () 4 8 INT #f #f)
(df f-disp9 "9 bit signed offset" () 4 8 INT
((value pc) (sra WI value (const 1)))
- ((value pc) (sll WI value (const 1)))
+ ((value pc) (mul WI value (const 2)))
)
(df f-disp10 "10 bit signed offset" () 4 8 INT
((value pc) (sra WI value (const 2)))
- ((value pc) (sll WI value (const 2)))
+ ((value pc) (mul WI value (const 4)))
)
(df f-s10 "10 bit signed offset" () 8 8 INT
((value pc) (sra WI value (const 2)))
- ((value pc) (sll WI value (const 2)))
+ ((value pc) (mul WI value (const 4)))
)
(df f-u10 "10 bit unsigned offset" () 8 8 UINT
((value pc) (srl UWI value (const 2)))
@@ -209,7 +209,7 @@
)
(df f-rel9 "9 pc relative signed offset" (PCREL-ADDR) 8 8 INT
((value pc) (sra WI (sub WI value (add WI pc (const 2))) (const 1)))
- ((value pc) (add WI (sll WI value (const 1)) (add WI pc (const 2))))
+ ((value pc) (add WI (mul WI value (const 2)) (add WI pc (const 2))))
)
(dnf f-dir8 "8 bit direct address" () 8 8)
(df f-dir9 "9 bit direct address" () 8 8 UINT
@@ -222,7 +222,7 @@
)
(df f-rel12 "12 bit pc relative signed offset" (PCREL-ADDR) 5 11 INT
((value pc) (sra WI (sub WI value (add WI pc (const 2))) (const 1)))
- ((value pc) (add WI (sll WI value (const 1)) (add WI pc (const 2))))
+ ((value pc) (add WI (mul WI value (const 2)) (add WI pc (const 2))))
)
(dnf f-reglist_hi_st "8 bit register mask for stm" () 8 8)