* [binutils-gdb] x86: widen applicability and use of CheckRegSize
@ 2022-11-24 8:36 Jan Beulich
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From: Jan Beulich @ 2022-11-24 8:36 UTC (permalink / raw)
To: bfd-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8ee52bcf39e95abbc9cfffbb0afbb55be67e8c3d
commit 8ee52bcf39e95abbc9cfffbb0afbb55be67e8c3d
Author: Jan Beulich <jbeulich@suse.com>
Date: Thu Nov 24 09:35:51 2022 +0100
x86: widen applicability and use of CheckRegSize
First of all make operand_type_register_match() apply to all sized
operands, i.e. in Intel Syntax also to respective memory ones. This
addresses gas wrongly accepting certain SIMD insns where register and
memory operand sizes should match but don't. This apparently has
affected all templates with one memory-only operand and one or more
register ones, both permitting at least two sizes, due to CheckRegSize
not taking effect.
Then also add CheckRegSize to a couple of non-SIMD templates matching
that same pattern of memory-only vs register operands. This replaces
bogus (for Intel Syntax) diagnostics referring to a wrong suffix (when
none was used at all) by "type mismatch" ones, just like already emitted
for insns where the template allows a register operand alongside a
memory one at any particular position.
This also is a prereq to limiting (ideally eliminating in the long run)
suffix "derivation" in Intel Syntax mode.
While making the code adjustment also flip order of checks to do the
cheaper one first in both cases.
Diff:
---
gas/config/tc-i386.c | 14 +++++---------
gas/testsuite/gas/i386/intelbad.l | 24 ++++++++++++++++++++++++
gas/testsuite/gas/i386/intelbad.s | 36 ++++++++++++++++++++++++++++++++++++
opcodes/i386-opc.tbl | 14 +++++++-------
opcodes/i386-tbl.h | 14 +++++++-------
5 files changed, 79 insertions(+), 23 deletions(-)
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index f54e7fddee0..5a88d25a9c2 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -2192,7 +2192,7 @@ operand_type_match (i386_operand_type overlap,
/* If given types g0 and g1 are registers they must be of the same type
unless the expected operand type register overlap is null.
- Some Intel syntax memory operand size checking also happens here. */
+ Intel syntax sized memory operands are also checked here. */
static INLINE int
operand_type_register_match (i386_operand_type g0,
@@ -2202,18 +2202,14 @@ operand_type_register_match (i386_operand_type g0,
{
if (g0.bitfield.class != Reg
&& g0.bitfield.class != RegSIMD
- && (!operand_type_check (g0, anymem)
- || g0.bitfield.unspecified
- || (t0.bitfield.class != Reg
- && t0.bitfield.class != RegSIMD)))
+ && (g0.bitfield.unspecified
+ || !operand_type_check (g0, anymem)))
return 1;
if (g1.bitfield.class != Reg
&& g1.bitfield.class != RegSIMD
- && (!operand_type_check (g1, anymem)
- || g1.bitfield.unspecified
- || (t1.bitfield.class != Reg
- && t1.bitfield.class != RegSIMD)))
+ && (g1.bitfield.unspecified
+ || !operand_type_check (g1, anymem)))
return 1;
if (g0.bitfield.byte == g1.bitfield.byte
diff --git a/gas/testsuite/gas/i386/intelbad.l b/gas/testsuite/gas/i386/intelbad.l
index c81d283dee3..8f6341d150f 100644
--- a/gas/testsuite/gas/i386/intelbad.l
+++ b/gas/testsuite/gas/i386/intelbad.l
@@ -169,3 +169,27 @@
.*:192: Error: .*
.*:193: Error: .*
.*:194: Error: .*
+.*:196: Error: .*
+.*:197: Error: .*
+.*:199: Error: .*
+.*:200: Error: .*
+.*:202: Error: .*
+.*:203: Error: .*
+.*:205: Error: .*
+.*:206: Error: .*
+.*:208: Error: .*
+.*:209: Error: .*
+.*:211: Error: .*
+.*:212: Error: .*
+.*:214: Error: .*
+.*:215: Error: .*
+.*:217: Error: .*
+.*:218: Error: .*
+.*:220: Error: .*
+.*:221: Error: .*
+.*:223: Error: .*
+.*:224: Error: .*
+.*:226: Error: .*
+.*:227: Error: .*
+.*:229: Error: .*
+.*:230: Error: .*
diff --git a/gas/testsuite/gas/i386/intelbad.s b/gas/testsuite/gas/i386/intelbad.s
index fd8c9cae433..77375579a47 100644
--- a/gas/testsuite/gas/i386/intelbad.s
+++ b/gas/testsuite/gas/i386/intelbad.s
@@ -192,3 +192,39 @@ start:
lsl ax, eax
lsl eax, dword ptr [eax]
lsl ax, dword ptr [eax]
+
+ mov eax, word ptr [eax]
+ mov eax, qword ptr [eax]
+
+ mov eax, word ptr [0x12345678]
+ mov eax, qword ptr [0x12345678]
+
+ xchg eax, word ptr [eax]
+ xchg eax, qword ptr [eax]
+
+ add eax, word ptr [eax]
+ add eax, qword ptr [eax]
+
+ test eax, word ptr [eax]
+ test eax, qword ptr [eax]
+
+ test word ptr [eax], eax
+ test qword ptr [eax], eax
+
+ movnti word ptr [eax], eax
+ movnti qword ptr [eax], eax
+
+ movbe eax, word ptr [eax]
+ movbe eax, qword ptr [eax]
+
+ vmovntdq xmmword ptr [eax], ymm0
+ vmovntdq zmmword ptr [eax], ymm0
+
+ vmovntdqa ymm0, xmmword ptr [eax]
+ vmovntdqa ymm0, zmmword ptr [eax]
+
+ movdiri word ptr [eax], eax
+ movdiri qword ptr [eax], eax
+
+ aadd word ptr [eax], eax
+ aadd qword ptr [eax], eax
diff --git a/opcodes/i386-opc.tbl b/opcodes/i386-opc.tbl
index 467307557da..e59ad8f3aff 100644
--- a/opcodes/i386-opc.tbl
+++ b/opcodes/i386-opc.tbl
@@ -142,9 +142,9 @@
### MARKER ###
// Move instructions.
-mov, 0xa0, None, CpuNo64, D|W|No_sSuf|No_qSuf|No_ldSuf, { Disp16|Disp32|Unspecified|Byte|Word|Dword, Acc|Byte|Word|Dword }
-mov, 0xa0, None, Cpu64, D|W|No_sSuf|No_ldSuf, { Disp64|Unspecified|Byte|Word|Dword|Qword, Acc|Byte|Word|Dword|Qword }
-movabs, 0xa0, None, Cpu64, D|W|No_sSuf|No_ldSuf, { Disp64|Unspecified|Byte|Word|Dword|Qword, Acc|Byte|Word|Dword|Qword }
+mov, 0xa0, None, CpuNo64, D|W|CheckRegSize|No_sSuf|No_qSuf|No_ldSuf, { Disp16|Disp32|Unspecified|Byte|Word|Dword, Acc|Byte|Word|Dword }
+mov, 0xa0, None, Cpu64, D|W|CheckRegSize|No_sSuf|No_ldSuf, { Disp64|Unspecified|Byte|Word|Dword|Qword, Acc|Byte|Word|Dword|Qword }
+movabs, 0xa0, None, Cpu64, D|W|CheckRegSize|No_sSuf|No_ldSuf, { Disp64|Unspecified|Byte|Word|Dword|Qword, Acc|Byte|Word|Dword|Qword }
movq, 0xa1, None, Cpu64, D|Size64|NoSuf, { Disp64|Unspecified|Qword, Acc|Qword }
mov, 0x88, None, 0, D|W|CheckRegSize|Modrm|No_sSuf|No_ldSuf|HLEPrefixRelease, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Byte|Word|Dword|Qword|Unspecified|BaseIndex }
movq, 0x89, None, Cpu64, D|Modrm|Size64|NoSuf|HLEPrefixRelease, { Reg64, Reg64|Unspecified|Qword|BaseIndex }
@@ -176,7 +176,7 @@ movq, 0xf21, None, Cpu64, D|RegMem|Size64|NoSuf|NoRex64, { Debug, Reg64 }
mov, 0xf24, None, Cpu386|CpuNo64, D|RegMem|IgnoreSize|No_bSuf|No_wSuf|No_sSuf|No_qSuf|No_ldSuf, { Test, Reg32 }
// Move after swapping the bytes
-movbe, 0x0f38f0, None, CpuMovbe, D|Modrm|No_bSuf|No_sSuf|No_ldSuf, { Word|Dword|Qword|Unspecified|BaseIndex, Reg16|Reg32|Reg64 }
+movbe, 0x0f38f0, None, CpuMovbe, D|Modrm|CheckRegSize|No_bSuf|No_sSuf|No_ldSuf, { Word|Dword|Qword|Unspecified|BaseIndex, Reg16|Reg32|Reg64 }
// Move with sign extend.
// "movsbl" & "movsbw" must not be unified into "movsb" to avoid
@@ -302,7 +302,7 @@ cmp, 0x3c, None, 0, W|No_sSuf|No_ldSuf, { Imm8|Imm16|Imm32|Imm32S, Acc|Byte|Word
cmp, 0x80, 7, 0, W|Modrm|No_sSuf|No_ldSuf, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Byte|Word|Dword|Qword|Unspecified|BaseIndex }
test, 0x84, None, 0, W|CheckRegSize|Modrm|No_sSuf|No_ldSuf, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|Byte|Word|Dword|Qword|BaseIndex }
-test, 0x84, None, 0, W|Modrm|No_sSuf|No_ldSuf, { Byte|Word|Dword|Qword|Unspecified|BaseIndex, Reg8|Reg16|Reg32|Reg64 }
+test, 0x84, None, 0, W|CheckRegSize|Modrm|No_sSuf|No_ldSuf, { Byte|Word|Dword|Qword|Unspecified|BaseIndex, Reg8|Reg16|Reg32|Reg64 }
test, 0xa8, None, 0, W|No_sSuf|No_ldSuf|Optimize, { Imm8|Imm16|Imm32|Imm32S, Acc|Byte|Word|Dword|Qword }
test, 0xf6, 0, 0, W|Modrm|No_sSuf|No_ldSuf|Optimize, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Byte|Word|Dword|Qword|Unspecified|BaseIndex }
@@ -970,7 +970,7 @@ fucompi, 0xdfe8, None, Cpu687, NoSuf, { FloatReg }
// Pentium4 extensions.
-movnti, 0xfc3, None, CpuSSE2, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_sSuf|No_ldSuf, { Reg32|Reg64, Dword|Qword|Unspecified|BaseIndex }
+movnti, 0xfc3, None, CpuSSE2, Modrm|CheckRegSize|IgnoreSize|No_bSuf|No_wSuf|No_sSuf|No_ldSuf, { Reg32|Reg64, Dword|Qword|Unspecified|BaseIndex }
clflush, 0xfae, 7, CpuClflush, Modrm|Anysize|IgnoreSize|NoSuf, { BaseIndex }
lfence, 0xfaee8, None, CpuSSE2, NoSuf, {}
mfence, 0xfaef0, None, CpuSSE2, NoSuf, {}
@@ -3053,7 +3053,7 @@ cldemote, 0x0f1c, 0, CpuCLDEMOTE, Modrm|Anysize|IgnoreSize|NoSuf, { BaseIndex }
// MOVDIR[I,64B] instructions.
-movdiri, 0xf38f9, None, CpuMOVDIRI, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_sSuf|No_ldSuf, { Reg32|Reg64, Dword|Qword|Unspecified|BaseIndex }
+movdiri, 0xf38f9, None, CpuMOVDIRI, Modrm|CheckRegSize|IgnoreSize|No_bSuf|No_wSuf|No_sSuf|No_ldSuf, { Reg32|Reg64, Dword|Qword|Unspecified|BaseIndex }
movdir64b, 0x660f38f8, None, CpuMOVDIR64B, Modrm|AddrPrefixOpReg|NoSuf, { Unspecified|BaseIndex, Reg16|Reg32|Reg64 }
// MOVEDIR instructions end.
diff --git a/opcodes/i386-tbl.h b/opcodes/i386-tbl.h
index 3830e227b07..e25c04780ec 100644
--- a/opcodes/i386-tbl.h
+++ b/opcodes/i386-tbl.h
@@ -23,7 +23,7 @@
const insn_template i386_optab[] =
{
{ "mov", 0xa0, 2, None,
- { 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
+ { 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 },
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -38,7 +38,7 @@ const insn_template i386_optab[] =
{ { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0 } } } },
{ "mov", 0xa0, 2, None,
- { 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0,
+ { 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 },
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -233,7 +233,7 @@ const insn_template i386_optab[] =
{ { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0 } } } },
{ "movabs", 0xa0, 2, None,
- { 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0,
+ { 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 },
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -488,7 +488,7 @@ const insn_template i386_optab[] =
{ { 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0 } } } },
{ "movbe", 0xf0, 2, None,
- { 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0,
+ { 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 },
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -1743,7 +1743,7 @@ const insn_template i386_optab[] =
{ { 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0,
0, 0, 0, 0, 1, 0 } } } },
{ "test", 0x84, 2, None,
- { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0,
+ { 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 },
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
@@ -9942,7 +9942,7 @@ const insn_template i386_optab[] =
{ { { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
0, 0, 0, 0, 0, 0 } } } },
{ "movnti", 0xc3, 2, None,
- { 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0,
+ { 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 },
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,
@@ -55177,7 +55177,7 @@ const insn_template i386_optab[] =
{ { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0 } } } },
{ "movdiri", 0xf9, 2, None,
- { 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0,
+ { 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 },
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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