Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity

ubsan: xstormy16: left shift of negative value

Browse Source 
cpu/
	* xstormy16.cpu (f-rel12a): Avoid signed overflow.
opcodes/
	* xstormy16-ibld.c: Regenerate.
This commit is contained in:
Alan Modra
2019-12-16 10:00:07 +10:30
parent 84e098cdea
commit e6ced26afd
4 changed files with 10 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
cpu/ChangeLog
View File

@@ -1,3 +1,7 @@
2019-12-16 Alan Modra <amodra@gmail.com>
* xstormy16.cpu (f-rel12a): Avoid signed overflow.
2019-12-11 Alan Modra <amodra@gmail.com>
* epiphany.cpu (f-sdisp11): Don't sign extend with shifts.

2
cpu/xstormy16.cpu
View File

@@ -393,7 +393,7 @@
(length 11)
(mode INT)
(encode (value pc) (sra SI (sub SI value (add SI pc 2)) 1))
(decode (value pc) (add SI (sll value 1) (add SI pc 2)))
(decode (value pc) (add SI (mul value 2) (add SI pc 2)))
)
(dnop rel12a "12 bit relative address" () h-uint f-rel12a)