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S12Z: Opcodes: Fix crash when trying to decode a truncated operation.

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opcodes/
	* s12z-opc.c (shift_discrim): Return OP_INVALID when reading fails.

gas/
	* testsuite/gas/s12z/truncated.d: New file.
	* testsuite/gas/s12z/truncated.s: New file.
	* testsuite/gas/s12z/s12z.exp: Add new test.
This commit is contained in:
John Darrington
2019-04-29 16:05:54 +02:00
parent 637d4b78c5
commit 4a90ce955e
6 changed files with 32 additions and 1 deletions
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2
opcodes/s12z-opc.c
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@@ -2292,7 +2292,7 @@ shift_discrim (struct mem_read_abstraction_base *mra, enum optr hint ATTRIBUTE_
uint8_t sb;
int status = mra->read (mra, 0, 1, &sb);
if (status < 0)
return status;
return OP_INVALID;
enum SB_DIR dir = (sb & 0x40) ? SB_LEFT : SB_RIGHT;
enum SB_TYPE type = (sb & 0x80) ? SB_ARITHMETIC : SB_LOGICAL;