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aarch64: Don't assert on long sysreg names

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This patch fixes an assertion failure on long system register operands
in the AArch64 backend. See the new testcase for an input which
reproduces the issue.

gas/ChangeLog:

	* config/tc-aarch64.c (parse_sys_reg): Don't assert when parsing
	a long system register.
	(parse_sys_ins_reg): Likewise.
	(sysreg_hash_insert): New.
	(md_begin): Use sysreg_hash_insert() to ensure all system
	registers are no longer than the maximum length at startup.
	* testsuite/gas/aarch64/invalid-sysreg-assert.d: New test.
	* testsuite/gas/aarch64/invalid-sysreg-assert.l: Error output.
	* testsuite/gas/aarch64/invalid-sysreg-assert.s: Input.

include/ChangeLog:

	* opcode/aarch64.h (AARCH64_MAX_SYSREG_NAME_LEN): New.
This commit is contained in:
Alex Coplan
2020-08-10 17:44:02 +01:00
parent 9546e03d55
commit fa63795f40
7 changed files with 55 additions and 13 deletions
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2
include/opcode/aarch64.h
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@ -943,6 +943,8 @@ extern const struct aarch64_name_value_pair aarch64_barrier_options [16];
extern const struct aarch64_name_value_pair aarch64_prfops [32];
extern const struct aarch64_name_value_pair aarch64_hint_options [];
#define AARCH64_MAX_SYSREG_NAME_LEN 32
typedef struct
{
const char * name;