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| author | Jacob Bramley <jacob.bramley@arm.com> | 2018-08-24 17:51:52 +0100 |
|---|---|---|
| committer | Jacob Bramley <jacob.bramley@arm.com> | 2018-08-28 15:33:22 +0100 |
| commit | 364c82b15129b5f168e450356ee0abd0e62ffa15 (patch) | |
| tree | e89f3c234f7fd410d0c161da877cbade81167823 /test/aarch64 | |
| parent | f658ca1813c32f483f20f75a4be0947ef66b442f (diff) | |
| download | vixl-364c82b15129b5f168e450356ee0abd0e62ffa15.tar.gz | |
Make disassembly of FC* more precise.
FCADD and FCMLA both span multiple opcodes, so it is not easy to represent them
with the Fixed/FMask/Mask structure that we usually use. In particular, the
Disassembler and Simulator would handle some unallocated encodings as FCADD
instructions.
This patch makes disassembly precise.
Change-Id: Ia0bda19489b2a1744b52a717ee7d6dc1b309184d
Diffstat (limited to 'test/aarch64')
| -rw-r--r-- | test/aarch64/test-disasm-aarch64.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/test/aarch64/test-disasm-aarch64.cc b/test/aarch64/test-disasm-aarch64.cc index 64be553d..426319ff 100644 --- a/test/aarch64/test-disasm-aarch64.cc +++ b/test/aarch64/test-disasm-aarch64.cc @@ -4735,6 +4735,12 @@ TEST(neon_3same_extra_fcadd) { COMPARE_MACRO(Fcmla(v21.V2D(), v22.V2D(), v23.V2D(), 0), "fcmla v21.2d, v22.2d, v23.2d, #0"); + // The FC* instructions span multiple opcodes, so they have special cases in + // the disassembler. Verify that similar encodings don't get disassembled as + // FC* instructions. + COMPARE(dci(0x2e00ec00), "unallocated (Unallocated)"); // opcode = 0x1101 + COMPARE(dci(0x2e00fc00), "unallocated (Unallocated)"); // opcode = 0x1111 + CLEANUP(); } |