* [binutils-gdb] x86-64: Use long NOPs for Intel Core processors
@ 2024-04-11 3:29 H.J. Lu
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From: H.J. Lu @ 2024-04-11 3:29 UTC (permalink / raw)
To: binutils-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=bf649e72d3d5bc0784080438f550095d71769904
commit bf649e72d3d5bc0784080438f550095d71769904
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Apr 1 10:03:11 2024 -0700
x86-64: Use long NOPs for Intel Core processors
Use long NOPs for Intel Core processors since they are faster than
multiple NOPs. Don't use them for 64-bit processors by default since
Intel Atom processors can only decode 4 prefixes in 1 cycle.
* config/tc-i386.c (alt64_9): New.
(alt64_10): Likewise.
(alt64_11): Likewise.
(alt64_12): Likewise.
(alt64_13): Likewise.
(alt64_14): Likewise.
(alt64_15): Likewise.
(alt64_patt): Likewise.
(i386_generate_nops): Use alt64_patt for Intel Core processors
in 64-bit mode.
* testsuite/gas/i386/x86-64-nops-1-core2.d: Expect long NOPs.
* testsuite/gas/i386/x86-64-nops-4-core2.d: Likewise.
* testsuite/gas/i386/ilp32/x86-64-nops-1-core2.d: Replace
../x86-64-nops-1.d with ../x86-64-nops-1-core2.d.
* testsuite/gas/i386/ilp32/x86-64-nops-4-core2.d: Replace
../x86-64-nops-4.d with ../x86-64-nops-4-core2.d.
Diff:
---
gas/config/tc-i386.c | 40 +++-
gas/testsuite/gas/i386/ilp32/x86-64-nops-1-core2.d | 2 +-
gas/testsuite/gas/i386/ilp32/x86-64-nops-4-core2.d | 2 +-
gas/testsuite/gas/i386/x86-64-nops-1-core2.d | 154 ++++++++++++++-
gas/testsuite/gas/i386/x86-64-nops-4-core2.d | 208 ++++++++++++++++++++-
5 files changed, 397 insertions(+), 9 deletions(-)
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 8f6337b34af..56b2431b1bc 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -1356,6 +1356,25 @@ static const unsigned char *const alt_patt[] = {
f32_1, f32_2, alt_3, alt_4, alt_5, alt_6, alt_7, alt_8,
alt_9, alt_10, alt_11
};
+#define alt64_9 (alt64_15 + 6) /* nopq 0L(%rax,%rax,1) */
+#define alt64_10 (alt64_15 + 5) /* cs nopq 0L(%rax,%rax,1) */
+/* data16 cs nopq 0L(%rax,%rax,1) */
+#define alt64_11 (alt64_15 + 4)
+/* data16 data16 cs nopq 0L(%rax,%rax,1) */
+#define alt64_12 (alt64_15 + 3)
+/* data16 data16 data16 cs nopq 0L(%rax,%rax,1) */
+#define alt64_13 (alt64_15 + 2)
+/* data16 data16 data16 data16 cs nopq 0L(%rax,%rax,1) */
+#define alt64_14 (alt64_15 + 1)
+/* data16 data16 data16 data16 data16 cs nopq 0L(%rax,%rax,1) */
+static const unsigned char alt64_15[] =
+ {0x66,0x66,0x66,0x66,0x66,0x2e,0x48,
+ 0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
+/* Long 64-bit NOPs patterns. */
+static const unsigned char *const alt64_patt[] = {
+ f32_1, f32_2, alt_3, alt_4, alt_5, alt_6, alt_7, alt_8,
+ alt64_9, alt64_10, alt64_11,alt64_12, alt64_13, alt64_14, alt64_15
+};
/* Genenerate COUNT bytes of NOPs to WHERE from PATT with the maximum
size of a single NOP instruction MAX_SINGLE_NOP_SIZE. */
@@ -1466,12 +1485,21 @@ i386_generate_nops (fragS *fragP, char *where, offsetT count, int limit)
patt = alt_patt;
break;
- case PROCESSOR_PENTIUMPRO:
- case PROCESSOR_PENTIUM4:
- case PROCESSOR_NOCONA:
case PROCESSOR_CORE:
case PROCESSOR_CORE2:
case PROCESSOR_COREI7:
+ if (fragP->tc_frag_data.cpunop)
+ {
+ if (fragP->tc_frag_data.code == CODE_64BIT)
+ patt = alt64_patt;
+ else
+ patt = alt_patt;
+ }
+ break;
+
+ case PROCESSOR_PENTIUMPRO:
+ case PROCESSOR_PENTIUM4:
+ case PROCESSOR_NOCONA:
case PROCESSOR_GENERIC64:
case PROCESSOR_K6:
case PROCESSOR_ATHLON:
@@ -1517,7 +1545,7 @@ i386_generate_nops (fragS *fragP, char *where, offsetT count, int limit)
}
}
- if (patt != alt_patt)
+ if (patt != alt_patt && patt != alt64_patt)
{
max_single_nop_size = patt == f32_patt ? ARRAY_SIZE (f32_patt)
: ARRAY_SIZE (f64_patt);
@@ -1526,7 +1554,9 @@ i386_generate_nops (fragS *fragP, char *where, offsetT count, int limit)
}
else
{
- max_single_nop_size = sizeof (alt_patt) / sizeof (alt_patt[0]);
+ max_single_nop_size = patt == alt_patt
+ ? ARRAY_SIZE (alt_patt)
+ : ARRAY_SIZE (alt64_patt);
/* Limit number of NOPs to 7 for newer processors. */
max_number_of_nops = 7;
}
diff --git a/gas/testsuite/gas/i386/ilp32/x86-64-nops-1-core2.d b/gas/testsuite/gas/i386/ilp32/x86-64-nops-1-core2.d
index aec0817e292..81aa9dc8353 100644
--- a/gas/testsuite/gas/i386/ilp32/x86-64-nops-1-core2.d
+++ b/gas/testsuite/gas/i386/ilp32/x86-64-nops-1-core2.d
@@ -2,4 +2,4 @@
#as: -mtune=core2
#objdump: -drw
#name: x86-64 (ILP32) -mtune=core2 nops 1
-#dump: ../x86-64-nops-1.d
+#dump: ../x86-64-nops-1-core2.d
diff --git a/gas/testsuite/gas/i386/ilp32/x86-64-nops-4-core2.d b/gas/testsuite/gas/i386/ilp32/x86-64-nops-4-core2.d
index 324267a501e..246c7e8c0b0 100644
--- a/gas/testsuite/gas/i386/ilp32/x86-64-nops-4-core2.d
+++ b/gas/testsuite/gas/i386/ilp32/x86-64-nops-4-core2.d
@@ -2,4 +2,4 @@
#as: -mtune=core2
#objdump: -drw
#name: x86-64 (ILP32) nops -mtune=core2 4
-#dump: ../x86-64-nops-4.d
+#dump: ../x86-64-nops-4-core2.d
diff --git a/gas/testsuite/gas/i386/x86-64-nops-1-core2.d b/gas/testsuite/gas/i386/x86-64-nops-1-core2.d
index ec632b29cf5..3fe7f3f6f31 100644
--- a/gas/testsuite/gas/i386/x86-64-nops-1-core2.d
+++ b/gas/testsuite/gas/i386/x86-64-nops-1-core2.d
@@ -2,4 +2,156 @@
#source: nops-1.s
#objdump: -drw
#name: x86-64 -mtune=core2 nops 1
-#dump: x86-64-nops-1.d
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <nop15>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+10 <nop14>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+20 <nop13>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+30 <nop12>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+40 <nop11>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 2e 48 0f 1f 84 00 00 00 00 00 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+50 <nop10>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 2e 48 0f 1f 84 00 00 00 00 00 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+60 <nop9>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 48 0f 1f 84 00 00 00 00 00 nopq (0x)?0\(%rax,%rax,1\)
+
+0+70 <nop8>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 0f 1f 84 00 00 00 00 00 nopl (0x)?0\(%rax,%rax,1\)
+
+0+80 <nop7>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 0f 1f 80 00 00 00 00 nopl (0x)?0\(%rax\)
+
+0+90 <nop6>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 0f 1f 44 00 00 nopw (0x)?0\(%rax,%rax,1\)
+
+0+a0 <nop5>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 0f 1f 44 00 00 nopl (0x)?0\(%rax,%rax,1\)
+
+0+b0 <nop4>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 0f 1f 40 00 nopl (0x)?0\(%rax\)
+
+0+c0 <nop3>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 0f 1f 00 nopl \(%rax\)
+
+0+d0 <nop2>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 90 xchg %ax,%ax
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-nops-4-core2.d b/gas/testsuite/gas/i386/x86-64-nops-4-core2.d
index 010b686db2f..8154ca9eb6b 100644
--- a/gas/testsuite/gas/i386/x86-64-nops-4-core2.d
+++ b/gas/testsuite/gas/i386/x86-64-nops-4-core2.d
@@ -2,4 +2,210 @@
#source: nops-4.s
#objdump: -drw
#name: x86-64 nops -mtune=core2 4
-#dump: x86-64-nops-4.d
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <nop31>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 90 nop
+
+0+20 <nop30>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+40 <nop29>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+60 <nop28>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+80 <nop27>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+a0 <nop26>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 66 2e 48 0f 1f 84 00 00 00 00 00 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+c0 <nop25>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 2e 48 0f 1f 84 00 00 00 00 00 cs nopq (0x)?0\(%rax,%rax,1\)
+
+0+e0 <nop24>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 48 0f 1f 84 00 00 00 00 00 nopq (0x)?0\(%rax,%rax,1\)
+
+0+100 <nop23>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 0f 1f 84 00 00 00 00 00 nopl (0x)?0\(%rax,%rax,1\)
+
+0+120 <nop22>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 0f 1f 80 00 00 00 00 nopl (0x)?0\(%rax\)
+
+0+140 <nop21>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 66 0f 1f 44 00 00 nopw (0x)?0\(%rax,%rax,1\)
+
+0+160 <nop20>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 0f 1f 44 00 00 nopl (0x)?0\(%rax,%rax,1\)
+
+0+180 <nop19>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 0f 1f 40 00 nopl (0x)?0\(%rax\)
+
+0+1a0 <nop18>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 0f 1f 00 nopl \(%rax\)
+
+0+1c0 <nop17>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 66 90 xchg %ax,%ax
+
+0+1e0 <nop16>:
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 90 nop
+ +[a-f0-9]+: 66 66 66 66 66 2e 48 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 cs nopq (0x)?0\(%rax,%rax,1\)
+ +[a-f0-9]+: 90 nop
+#pass
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2024-04-11 3:29 [binutils-gdb] x86-64: Use long NOPs for Intel Core processors H.J. Lu
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