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@ -1,4 +1,4 @@
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From e3a1c61d1a69c66a5635bb23318531d5ef651e15 Mon Sep 17 00:00:00 2001
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From 17a5177cbb228f22ef3e00d4bb66af71724a6d07 Mon Sep 17 00:00:00 2001
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From: Giuliano Belinassi <gbelinassi@suse.de>
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Date: Wed, 24 May 2023 18:03:15 -0300
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Subject: [PATCH] Add Userspace Livepatch prologue into ASM functions
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@ -15,17 +15,17 @@ Signed-off-by: Giuliano Belinassi <gbelinassi@suse.de>
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Makeconfig | 5 +++++
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config.h.in | 3 +++
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config.make.in | 1 +
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configure | 20 ++++++++++++++++++
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configure.ac | 13 ++++++++++++
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sysdeps/x86/sysdep.h | 22 ++++++++++++++++----
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configure | 20 ++++++++++++++++++++
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configure.ac | 13 +++++++++++++
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sysdeps/x86/sysdep.h | 22 ++++++++++++++++++----
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sysdeps/x86_64/multiarch/strcmp-avx2.S | 5 +----
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sysdeps/x86_64/multiarch/strcmp-evex.S | 5 +----
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sysdeps/x86_64/multiarch/strcmp-sse4_2.S | 5 +----
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sysdeps/x86_64/sysdep.h | 26 ++++++++++++++++++++++++
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10 files changed, 89 insertions(+), 16 deletions(-)
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sysdeps/x86_64/sysdep.h | 13 +++++++++++++
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10 files changed, 76 insertions(+), 16 deletions(-)
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diff --git a/Makeconfig b/Makeconfig
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index 2514db35f6..37df019873 100644
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index 2fda4af5f7..52a79bc0c0 100644
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--- a/Makeconfig
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+++ b/Makeconfig
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@@ -961,6 +961,11 @@ endif # $(+cflags) == ""
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@ -41,7 +41,7 @@ index 2514db35f6..37df019873 100644
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# used to compile and will be installed. Each can also contain an
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# include/ subdirectory, whose header files will be used to compile
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diff --git a/config.h.in b/config.h.in
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index 44a34072a4..430627dcaf 100644
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index 43d32518ab..32fc79a357 100644
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--- a/config.h.in
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+++ b/config.h.in
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@@ -199,6 +199,9 @@
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@ -55,10 +55,10 @@ index 44a34072a4..430627dcaf 100644
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#define TIMEOUTFACTOR 1
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diff --git a/config.make.in b/config.make.in
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index 4afd37feaf..84d957cb1c 100644
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index d7c416cbea..c6f6909d68 100644
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--- a/config.make.in
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+++ b/config.make.in
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@@ -83,6 +83,7 @@ nss-crypt = @libc_cv_nss_crypt@
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@@ -86,6 +86,7 @@ nss-crypt = @libc_cv_nss_crypt@
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static-nss-crypt = @libc_cv_static_nss_crypt@
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# Configuration options.
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@ -67,7 +67,7 @@ index 4afd37feaf..84d957cb1c 100644
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build-profile = @profile@
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build-static-nss = @static_nss@
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diff --git a/configure b/configure
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index f84040644b..490800c75c 100755
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index efb891456a..4030ccf701 100755
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--- a/configure
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+++ b/configure
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@@ -591,6 +591,7 @@ LIBOBJS
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@ -78,7 +78,7 @@ index f84040644b..490800c75c 100755
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mach_interface_list
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DEFINES
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static_nss
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@@ -783,6 +784,7 @@ enable_mathvec
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@@ -789,6 +790,7 @@ enable_mathvec
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enable_cet
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enable_scv
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with_cpu
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@ -86,7 +86,7 @@ index f84040644b..490800c75c 100755
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'
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ac_precious_vars='build_alias
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host_alias
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@@ -1452,6 +1454,8 @@ Optional Features:
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@@ -1462,6 +1464,8 @@ Optional Features:
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(CET), x86 only
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--disable-scv syscalls will not use scv instruction, even if the
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kernel supports it, powerpc only
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@ -95,7 +95,7 @@ index f84040644b..490800c75c 100755
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Optional Packages:
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--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
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@@ -6708,6 +6712,22 @@ libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
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@@ -6751,6 +6755,22 @@ libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
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@ -119,10 +119,10 @@ index f84040644b..490800c75c 100755
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RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
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diff --git a/configure.ac b/configure.ac
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index 88df3e5eed..1c2983de75 100644
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index 011844a3d4..26c1a78009 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -1803,6 +1803,19 @@ AC_SUBST(DEFINES)
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@@ -1827,6 +1827,19 @@ AC_SUBST(DEFINES)
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dnl See sysdeps/mach/configure.ac for this variable.
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AC_SUBST(mach_interface_list)
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@ -229,10 +229,10 @@ index f93c34465e..f96f66d54c 100644
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/*
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* This implementation uses SSE to compare up to 16 bytes at a time.
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diff --git a/sysdeps/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h
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index 6ca169573d..a4265a3ef4 100644
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index 6ca169573d..c18f0ef914 100644
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--- a/sysdeps/x86_64/sysdep.h
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+++ b/sysdeps/x86_64/sysdep.h
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@@ -24,6 +24,32 @@
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@@ -24,6 +24,19 @@
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#ifdef __ASSEMBLER__
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@ -240,24 +240,11 @@ index 6ca169573d..a4265a3ef4 100644
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+ prologue of all functions. This works for C functions. For functions
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+ written in ASM, the way we do this is by adding this prologue manually. */
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+
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+#if ENABLE_USERSPACE_LIVEPATCH == 1
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+#if ENABLE_USERSPACE_LIVEPATCH
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+# undef ULP_PRE_PROLOGUE
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+# undef ULP_POST_PROLOGUE
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+# define ULP_PRE_PROLOGUE \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop; \
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+ nop;
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+ .rept 14; nop; .endr
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+# define ULP_POST_PROLOGUE \
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+ xchg %ax, %ax
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+#endif
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@ -266,5 +253,5 @@ index 6ca169573d..a4265a3ef4 100644
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/* This macro is for setting proper CFI with DW_CFA_expression describing
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--
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2.39.0
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2.40.1
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