Accepting request 1144266 from devel:gcc:next
- VEX-x86-nop-pattern.patch: bko#478624 - Valgrind incompatibility with binutils-2.42 on x86 with new nop patterns (unhandled instruction bytes: 0x2E 0x8D 0xB4 0x26) OBS-URL: https://build.opensuse.org/request/show/1144266 OBS-URL: https://build.opensuse.org/package/show/devel:tools/valgrind?expand=0&rev=277
This commit is contained in:
Git OBS Bridge
parent
8359fc3c64
commit
be56e836e3
136
VEX-x86-nop-pattern.patch
Normal file
136
VEX-x86-nop-pattern.patch
Normal file
@ -0,0 +1,136 @@
|
||||
From d35005cef8ad8207542738812705ceabf137d7e0 Mon Sep 17 00:00:00 2001
|
||||
From: Paul Floyd <pjfloyd@wanadoo.fr>
|
||||
Date: Sun, 17 Dec 2023 14:18:51 +0100
|
||||
Subject: [PATCH] Bug 478624 - Valgrind incompatibility with binutils-2.42 on
|
||||
x86 with new nop patterns (unhandled instruction bytes: 0x2E 0x8D 0xB4 0x26)
|
||||
|
||||
It was a bit of a struggle to get the testcase to build
|
||||
with both clang and gcc (oddly enough gcc was more difficult) so
|
||||
I just resorted to using .byte arrays.
|
||||
---
|
||||
.gitignore | 1 +
|
||||
NEWS | 2 ++
|
||||
VEX/priv/guest_x86_toIR.c | 22 +++++++++++++-
|
||||
none/tests/x86/Makefile.am | 2 ++
|
||||
none/tests/x86/gnu_binutils_nop.c | 34 ++++++++++++++++++++++
|
||||
none/tests/x86/gnu_binutils_nop.stderr.exp | 0
|
||||
none/tests/x86/gnu_binutils_nop.vgtest | 2 ++
|
||||
7 files changed, 62 insertions(+), 1 deletion(-)
|
||||
create mode 100644 none/tests/x86/gnu_binutils_nop.c
|
||||
create mode 100644 none/tests/x86/gnu_binutils_nop.stderr.exp
|
||||
create mode 100644 none/tests/x86/gnu_binutils_nop.vgtest
|
||||
|
||||
diff --git a/VEX/priv/guest_x86_toIR.c b/VEX/priv/guest_x86_toIR.c
|
||||
index 5d6e6dc64..3b6efb387 100644
|
||||
--- a/VEX/priv/guest_x86_toIR.c
|
||||
+++ b/VEX/priv/guest_x86_toIR.c
|
||||
@@ -8198,7 +8198,7 @@ DisResult disInstr_X86_WRK (
|
||||
delta += 5;
|
||||
goto decode_success;
|
||||
}
|
||||
- /* Don't barf on recent binutils padding,
|
||||
+ /* Don't barf on recent (2010) binutils padding,
|
||||
all variants of which are: nopw %cs:0x0(%eax,%eax,1)
|
||||
66 2e 0f 1f 84 00 00 00 00 00
|
||||
66 66 2e 0f 1f 84 00 00 00 00 00
|
||||
@@ -8223,6 +8223,26 @@ DisResult disInstr_X86_WRK (
|
||||
}
|
||||
}
|
||||
|
||||
+ /* bug478624 GNU binutils uses a leal of esi into itself with
|
||||
+ a zero offset and CS prefix as an 8 byte no-op (Dec 2023).
|
||||
+ Since the CS prefix is hardly ever used we don't do much
|
||||
+ to decode it, just a few cases for conditional branches.
|
||||
+ So add handling here with other pseudo-no-ops.
|
||||
+ */
|
||||
+ if (code[0] == 0x2E && code[1] == 0x8D) {
|
||||
+ if (code[2] == 0x74 && code[3] == 0x26 && code[4] == 0x00) {
|
||||
+ DIP("leal %%cs:0(%%esi,%%eiz,1),%%esi\n");
|
||||
+ delta += 5;
|
||||
+ goto decode_success;
|
||||
+ }
|
||||
+ if (code[2] == 0xB4 && code[3] == 0x26 && code[4] == 0x00
|
||||
+ && code[5] == 0x00 && code[6] == 0x00 && code[7] == 0x00) {
|
||||
+ DIP("leal %%cs:0(%%esi,%%eiz,1),%%esi\n");
|
||||
+ delta += 8;
|
||||
+ goto decode_success;
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
// Intel CET requires the following opcodes to be treated as NOPs
|
||||
// with any prefix and ModRM, SIB and disp combination:
|
||||
// "0F 19", "0F 1C", "0F 1D", "0F 1E", "0F 1F"
|
||||
diff --git a/none/tests/x86/Makefile.am b/none/tests/x86/Makefile.am
|
||||
index 3ecd1ad3c..dbae86571 100644
|
||||
--- a/none/tests/x86/Makefile.am
|
||||
+++ b/none/tests/x86/Makefile.am
|
||||
@@ -52,6 +52,7 @@ EXTRA_DIST = \
|
||||
fxtract.stdout.exp fxtract.stderr.exp fxtract.vgtest \
|
||||
fxtract.stdout.exp-older-glibc \
|
||||
getseg.stdout.exp getseg.stderr.exp getseg.vgtest \
|
||||
+ gnu_binutils_nop.stderr.exp gnu_binutils_nop.vgtest \
|
||||
incdec_alt.stdout.exp incdec_alt.stderr.exp incdec_alt.vgtest \
|
||||
int.stderr.exp int.stdout.exp int.disabled \
|
||||
$(addsuffix .stderr.exp,$(INSN_TESTS)) \
|
||||
@@ -100,6 +101,7 @@ check_PROGRAMS = \
|
||||
fpu_lazy_eflags \
|
||||
fxtract \
|
||||
getseg \
|
||||
+ gnu_binutils_nop \
|
||||
incdec_alt \
|
||||
$(INSN_TESTS) \
|
||||
int \
|
||||
diff --git a/none/tests/x86/gnu_binutils_nop.c b/none/tests/x86/gnu_binutils_nop.c
|
||||
new file mode 100644
|
||||
index 000000000..412a4c2cb
|
||||
--- /dev/null
|
||||
+++ b/none/tests/x86/gnu_binutils_nop.c
|
||||
@@ -0,0 +1,34 @@
|
||||
+int main(void)
|
||||
+{
|
||||
+ // GNU binutils uses various opcodes as alternatives for nop
|
||||
+ // the idea is that it is faster to execute one large opcode
|
||||
+ // with no side-effects than multiple repetitions of the
|
||||
+ // single byte 'nop'. This gives more choice when code
|
||||
+ // needs to be padded.
|
||||
+
|
||||
+ // the following is based on
|
||||
+ // https://sourceware.org/cgit/binutils-gdb/tree/gas/config/tc-i386.c#n1256
|
||||
+
|
||||
+ // one byte
|
||||
+ __asm__ __volatile__("nop");
|
||||
+ // two bytes
|
||||
+ __asm__ __volatile__("xchg %ax,%ax");
|
||||
+ // three bytes
|
||||
+ //__asm__ __volatile__("leal 0(%esi),%esi");
|
||||
+ __asm__ __volatile__(".byte 0x8d,0x76,0x00");
|
||||
+ // four bytes
|
||||
+ //__asm__ __volatile__("leal 0(%esi,%eiz),%esi");
|
||||
+ __asm__ __volatile__(".byte 0x8d,0x74,0x26,0x00");
|
||||
+ // five bytes
|
||||
+ //__asm__ __volatile__("leal %cs:0(%esi,%eiz),%esi");
|
||||
+ __asm__ __volatile__(".byte 0x2e,0x8d,0x74,0x26,0x00");
|
||||
+ // six bytes
|
||||
+ //__asm__ __volatile__("leal 0L(%esi),%esi");
|
||||
+ __asm__ __volatile__(".byte 0x8d,0xb6,0x00,0x00,0x00,0x00");
|
||||
+ // seven bytes
|
||||
+ //__asm__ __volatile__("leal 0L(%esi,%eiz),%esi");
|
||||
+ __asm__ __volatile__(".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00");
|
||||
+ // eight bytes
|
||||
+ //__asm__ __volatile__("leal %cs:0L(%esi,%eiz),%esi");
|
||||
+ __asm__ __volatile__(".byte 0x2e,0x8d,0xb4,0x26,0x00,0x00,0x00,0x00");
|
||||
+}
|
||||
diff --git a/none/tests/x86/gnu_binutils_nop.stderr.exp b/none/tests/x86/gnu_binutils_nop.stderr.exp
|
||||
new file mode 100644
|
||||
index 000000000..e69de29bb
|
||||
diff --git a/none/tests/x86/gnu_binutils_nop.vgtest b/none/tests/x86/gnu_binutils_nop.vgtest
|
||||
new file mode 100644
|
||||
index 000000000..7f378dd53
|
||||
--- /dev/null
|
||||
+++ b/none/tests/x86/gnu_binutils_nop.vgtest
|
||||
@@ -0,0 +1,2 @@
|
||||
+prog: gnu_binutils_nop
|
||||
+vgopts: -q
|
||||
--
|
||||
2.43.0
|
||||
|
||||
@ -1,3 +1,10 @@
|
||||
-------------------------------------------------------------------
|
||||
Mon Feb 5 13:26:28 UTC 2024 - Andreas Schwab <schwab@suse.de>
|
||||
|
||||
- VEX-x86-nop-pattern.patch: bko#478624 - Valgrind incompatibility with
|
||||
binutils-2.42 on x86 with new nop patterns (unhandled instruction bytes:
|
||||
0x2E 0x8D 0xB4 0x26)
|
||||
|
||||
-------------------------------------------------------------------
|
||||
Fri Nov 24 09:07:29 UTC 2023 - Dirk Müller <dmueller@suse.com>
|
||||
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
#
|
||||
# spec file
|
||||
#
|
||||
# Copyright (c) 2023 SUSE LLC
|
||||
# Copyright (c) 2024 SUSE LLC
|
||||
#
|
||||
# All modifications and additions to the file contributed by third parties
|
||||
# remain the property of their copyright owners, unless otherwise agreed
|
||||
@ -44,6 +44,8 @@ Patch1: VEX-x86-pinsrd.patch
|
||||
Patch2: armv6-support.diff
|
||||
Patch9: parallel-lto.patch
|
||||
Patch10: dhat-use-datadir.patch
|
||||
# bko#478624 - Valgrind incompatibility with binutils-2.42 on x86 with new nop patterns (unhandled instruction bytes: 0x2E 0x8D 0xB4 0x26)
|
||||
Patch11: VEX-x86-nop-pattern.patch
|
||||
BuildRequires: automake
|
||||
BuildRequires: pkgconfig
|
||||
%if %{suse_version} == 1600 && !0%{?is_opensuse}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user