[PATCH 01/43] aarch64: Fix PSEL opcode mask
Richard Sandiford
richard.sandiford@arm.com
Thu Mar 30 10:23:17 GMT 2023
The opcode mask for PSEL was missing some bits, which meant
that some upcoming SME2 opcodes would be misinterpreted as PSELs.
---
gas/testsuite/gas/aarch64/sme-9.d | 3 +++
gas/testsuite/gas/aarch64/sme-9.s | 5 +++++
opcodes/aarch64-tbl.h | 2 +-
3 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/gas/testsuite/gas/aarch64/sme-9.d b/gas/testsuite/gas/aarch64/sme-9.d
index ef314c61451..9a6175c3906 100644
--- a/gas/testsuite/gas/aarch64/sme-9.d
+++ b/gas/testsuite/gas/aarch64/sme-9.d
@@ -71,3 +71,6 @@ Disassembly of section \.text:
f4: 44cbc544 uclamp z4.d, z10.d, z11.d
f8: 25277c61 psel p1, p15, p3.b\[w15, 0\]
fc: 252778a2 psel p2, p14, p5.b\[w15, 0\]
+ 100: 25244200 \.inst 0x25244200 ; undefined
+ 104: 25244010 \.inst 0x25244010 ; undefined
+ 108: 25244210 \.inst 0x25244210 ; undefined
diff --git a/gas/testsuite/gas/aarch64/sme-9.s b/gas/testsuite/gas/aarch64/sme-9.s
index be8511fe3df..495a7f9fbf0 100644
--- a/gas/testsuite/gas/aarch64/sme-9.s
+++ b/gas/testsuite/gas/aarch64/sme-9.s
@@ -84,3 +84,8 @@ foo .req p1
bar .req w15
psel foo, p15, p3.b[w15, 0]
psel p2, p14, p5.b[bar, 0]
+
+// These were previously incorrectly decoded as PSELs.
+.inst 0x25244200
+.inst 0x25244010
+.inst 0x25244210
diff --git a/opcodes/aarch64-tbl.h b/opcodes/aarch64-tbl.h
index 69703650471..96e6c136282 100644
--- a/opcodes/aarch64-tbl.h
+++ b/opcodes/aarch64-tbl.h
@@ -5275,7 +5275,7 @@ const struct aarch64_opcode aarch64_opcode_table[] =
SME_INSNC ("revd", 0x52e8000, 0xffffe000, sme_misc, 0, OP3 (SVE_Zd, SVE_Pg3, SVE_Zn), OP_SVE_QMQ, 0, C_SCAN_MOVPRFX, 0),
SME_INSNC ("sclamp", 0x4400c000, 0xff20fc00, sve_size_bhsd, 0, OP3 (SVE_Zd, SVE_Zn, SVE_Zm_16), OP_SVE_VVV_BHSD, 0, C_SCAN_MOVPRFX, 0),
SME_INSNC ("uclamp", 0x4400c400, 0xff20fc00, sve_size_bhsd, 0, OP3 (SVE_Zd, SVE_Zn, SVE_Zm_16), OP_SVE_VVV_BHSD, 0, C_SCAN_MOVPRFX, 0),
- SME_INSN ("psel", 0x25204000, 0xff20c000, sme_misc, 0, OP3 (SVE_Pd, SVE_Pg4_10, SME_PnT_Wm_imm), OP_SVE_NN_BHSD, 0, 0),
+ SME_INSN ("psel", 0x25204000, 0xff20c210, sme_misc, 0, OP3 (SVE_Pd, SVE_Pg4_10, SME_PnT_Wm_imm), OP_SVE_NN_BHSD, 0, 0),
/* SIMD Dot Product (optional in v8.2-A). */
DOT_INSN ("udot", 0x2e009400, 0xbf20fc00, dotproduct, OP3 (Vd, Vn, Vm), QL_V3DOT, F_SIZEQ),
--
2.25.1
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