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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2016-07-01 16:20:50 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2016-07-01 16:50:59 +0100 |
| commit | 93d8990cba700abdf9d2be06a5022e588d097fc8 (patch) | |
| tree | 4e26591d6134671659c2bea61ec81f3c50452662 /include/opcode | |
| parent | 2c5c2a3321706c28cbf1b85a970a2e32912eb0c8 (diff) | |
| download | gdb-93d8990cba700abdf9d2be06a5022e588d097fc8.zip gdb-93d8990cba700abdf9d2be06a5022e588d097fc8.tar.gz gdb-93d8990cba700abdf9d2be06a5022e588d097fc8.tar.bz2 | |
[AArch64] Fix +nofp16 handling
Feature flag handling was not perfect, +nofp16 disabled fp
instructions too.
New feature flag macros were added to check features with multiple
bits set (matters for FP_F16 and SIMD_F16 opcode feature tests).
The unused AARCH64_OPCODE_HAS_FEATURE was removed, all checks should
use one of the AARCH64_CPU_HAS_* macros. AARCH64_CPU_HAS_FEATURE
now checks all feature bits.
The aarch64_features table now contains the dependencies as
a separate field (so when the feature is enabled all dependencies
are enabled and when it is disabled everything that depends on it
is disabled).
Note that armv8-a+foo+nofoo is not equivalent to armv8-a if
+foo turns on dependent features that nofoo does not turn off.
gas/
* config/tc-aarch64.c (struct aarch64_option_cpu_value_table): Add
require field.
(aarch64_features): Initialize require fields.
(aarch64_parse_features): Handle dependencies.
(aarch64_feature_enable_set, aarch64_feature_disable_set): New.
(md_assemble): Use AARCH64_CPU_HAS_ALL_FEATURES.
* testsuite/gas/aarch64/illegal-nofp16.s: New.
* testsuite/gas/aarch64/illegal-nofp16.l: New.
* testsuite/gas/aarch64/illegal-nofp16.d: New.
include/
* opcode/aarch64.h (AARCH64_CPU_HAS_ALL_FEATURES): New.
(AARCH64_CPU_HAS_ANY_FEATURES): New.
(AARCH64_CPU_HAS_FEATURE): Define as AARCH64_CPU_HAS_ALL_FEATURES.
(AARCH64_OPCODE_HAS_FEATURE): Remove.
Diffstat (limited to 'include/opcode')
| -rw-r--r-- | include/opcode/aarch64.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/include/opcode/aarch64.h b/include/opcode/aarch64.h index b35a818..1e38749 100644 --- a/include/opcode/aarch64.h +++ b/include/opcode/aarch64.h @@ -84,9 +84,15 @@ typedef uint32_t aarch64_insn; /* CPU-specific features. */ typedef unsigned long aarch64_feature_set; -#define AARCH64_CPU_HAS_FEATURE(CPU,FEAT) \ +#define AARCH64_CPU_HAS_ALL_FEATURES(CPU,FEAT) \ + ((~(CPU) & (FEAT)) == 0) + +#define AARCH64_CPU_HAS_ANY_FEATURES(CPU,FEAT) \ (((CPU) & (FEAT)) != 0) +#define AARCH64_CPU_HAS_FEATURE(CPU,FEAT) \ + AARCH64_CPU_HAS_ALL_FEATURES (CPU,FEAT) + #define AARCH64_MERGE_FEATURE_SETS(TARG,F1,F2) \ do \ { \ @@ -103,9 +109,6 @@ typedef unsigned long aarch64_feature_set; #define AARCH64_FEATURE(core,coproc) ((core) | (coproc)) -#define AARCH64_OPCODE_HAS_FEATURE(OPC,FEAT) \ - (((OPC) & (FEAT)) != 0) - enum aarch64_operand_class { AARCH64_OPND_CLASS_NIL, |