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-rw-r--r--system/libucontext/0001-Reorder-registers-in-other-assembler-files.patch45
-rw-r--r--system/libucontext/APKBUILD11
2 files changed, 52 insertions, 4 deletions
diff --git a/system/libucontext/0001-Reorder-registers-in-other-assembler-files.patch b/system/libucontext/0001-Reorder-registers-in-other-assembler-files.patch
new file mode 100644
index 000000000..b6fe600c9
--- /dev/null
+++ b/system/libucontext/0001-Reorder-registers-in-other-assembler-files.patch
@@ -0,0 +1,45 @@
+From 42c84cbe58c3c9089cc2a46a425210f20b47bcc9 Mon Sep 17 00:00:00 2001
+From: "A. Wilcox" <AWilcox@Wilcox-Tech.com>
+Date: Thu, 19 Jul 2018 17:17:26 -0500
+Subject: [PATCH] Reorder registers in other assembler files
+
+This fixes the previous commit which changed the register order in
+swapcontext only, which caused setcontext to subtly corrupt the stack.
+---
+ arch/x86_64/getcontext.S | 4 ++--
+ arch/x86_64/setcontext.S | 4 ++--
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/arch/x86_64/getcontext.S b/arch/x86_64/getcontext.S
+index 7e56a1a..24cc1d3 100644
+--- a/arch/x86_64/getcontext.S
++++ b/arch/x86_64/getcontext.S
+@@ -22,8 +22,8 @@ __getcontext:
+ movq %r14, 88(%rdi)
+ movq %r15, 96(%rdi)
+ movq %rdi, 104(%rdi)
+- movq %rbp, 112(%rdi)
+- movq %rsi, 120(%rdi)
++ movq %rsi, 112(%rdi)
++ movq %rbp, 120(%rdi)
+ movq %rbx, 128(%rdi)
+ movq %rdx, 136(%rdi)
+ movq $1, 144(%rdi) /* $1 is %rax */
+diff --git a/arch/x86_64/setcontext.S b/arch/x86_64/setcontext.S
+index 607d40c..aba3775 100644
+--- a/arch/x86_64/setcontext.S
++++ b/arch/x86_64/setcontext.S
+@@ -21,8 +21,8 @@ __setcontext:
+ movq 80(%rdi), %r13
+ movq 88(%rdi), %r14
+ movq 96(%rdi), %r15
+- movq 112(%rdi), %rbp
+- movq 120(%rdi), %rsi
++ movq 112(%rdi), %rsi
++ movq 120(%rdi), %rbp
+ movq 128(%rdi), %rbx
+ movq 136(%rdi), %rdx
+ movq 144(%rdi), %rax
+--
+2.15.0
+
diff --git a/system/libucontext/APKBUILD b/system/libucontext/APKBUILD
index 312e7e83a..425b7ec96 100644
--- a/system/libucontext/APKBUILD
+++ b/system/libucontext/APKBUILD
@@ -1,14 +1,16 @@
# Maintainer: William Pitcock <nenolod@dereferenced.org>
pkgname=libucontext
pkgver=0.1.2
-pkgrel=0
+pkgrel=1
pkgdesc="ucontext function implementations"
-url="http://github.com/kaniini/libucontext"
+url="https://git.dereferenced.org/kaniini/libucontext/"
arch="all"
license="ISC"
depends=""
subpackages="$pkgname-dev"
-source="https://distfiles.dereferenced.org/libucontext/libucontext-$pkgver.tar.xz"
+source="https://distfiles.dereferenced.org/libucontext/libucontext-$pkgver.tar.xz
+ 0001-Reorder-registers-in-other-assembler-files.patch
+ "
case "$CTARGET_ARCH" in
armhf) LIBUCONTEXT_ARCH="arm" ;;
@@ -32,4 +34,5 @@ package() {
make ARCH="$LIBUCONTEXT_ARCH" DESTDIR="$pkgdir" install
}
-sha512sums="0c1d74341487d3128667abe9b6594f70c41b4e26bfff656c96eff5de55795f3f4186b3f46281503daf0ee3694a3c10966dd733a6779f49544759a5fe8e6fcdf5 libucontext-0.1.2.tar.xz"
+sha512sums="0c1d74341487d3128667abe9b6594f70c41b4e26bfff656c96eff5de55795f3f4186b3f46281503daf0ee3694a3c10966dd733a6779f49544759a5fe8e6fcdf5 libucontext-0.1.2.tar.xz
+7f3904e5a10db88cfb3e201b0b370c8c04da5ef33fbf9e177a9bc2da5defbe984057c4be1d1e74672b59a9d4978cf0a7233dc3d661c53aeba355ea91d1ebc24b 0001-Reorder-registers-in-other-assembler-files.patch"