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authorAlan Modra <amodra@gmail.com>2019-12-10 19:04:37 +1030
committerAlan Modra <amodra@gmail.com>2019-12-11 11:36:59 +1030
commit9d48687b41f17ccbd7c61dd76b96147f28916951 (patch)
treec0ba2c8897739970b20cb4a40b06a6eacebdc738 /opcodes/aarch64-dis.c
parent76bba5ee850ea391ebdbb54dda5a06a567526dbf (diff)
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aarch64 disassembler infinite loop
Assembling this to an object and trying to disassemble results in objdump -d looping forever. .inst 0x45205120 PR 25270 * aarch64-dis.c (aarch64_decode_variant_using_iclass): Return false when field is zero for sve_size_tsz_bhs.
Diffstat (limited to 'opcodes/aarch64-dis.c')
-rw-r--r--opcodes/aarch64-dis.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/opcodes/aarch64-dis.c b/opcodes/aarch64-dis.c
index 9300569..8b32097 100644
--- a/opcodes/aarch64-dis.c
+++ b/opcodes/aarch64-dis.c
@@ -2843,6 +2843,8 @@ aarch64_decode_variant_using_iclass (aarch64_inst *inst)
case sve_size_tsz_bhs:
i = extract_fields (inst->value, 0, 2, FLD_SVE_sz, FLD_SVE_tszl_19);
+ if (i == 0)
+ return FALSE;
while (i != 1)
{
if (i & 1)