see https://github.com/golang/go/issues/23889
Signed-off-by: Khem Raj <raj.k...@gmail.com>
---
meta/recipes-devtools/go/go-1.10.inc | 1 +
.../arm64-fix-branch-too-far-with-TBZ.patch | 50 ++++++++++++++++++++++
2 files changed, 51 insertions(+)
create mode 100644
meta/recipes-devtools/go/go-1.10/arm64-fix-branch-too-far-with-TBZ.patch
diff --git a/meta/recipes-devtools/go/go-1.10.inc
b/meta/recipes-devtools/go/go-1.10.inc
index 3a93773e2a..8c70de934e 100644
--- a/meta/recipes-devtools/go/go-1.10.inc
+++ b/meta/recipes-devtools/go/go-1.10.inc
@@ -13,6 +13,7 @@ SRC_URI += "\
file://0005-make.bash-override-CC-when-building-dist-and-go_boot.patch \
file://0006-cmd-dist-separate-host-and-target-builds.patch \
file://0007-cmd-go-make-GOROOT-precious-by-default.patch \
+ file://arm64-fix-branch-too-far-with-TBZ.patch \
"
SRC_URI_append_libc-musl = "
file://0008-ld-replace-glibc-dynamic-linker-with-musl.patch"
diff --git
a/meta/recipes-devtools/go/go-1.10/arm64-fix-branch-too-far-with-TBZ.patch
b/meta/recipes-devtools/go/go-1.10/arm64-fix-branch-too-far-with-TBZ.patch
new file mode 100644
index 0000000000..9378ede132
--- /dev/null
+++ b/meta/recipes-devtools/go/go-1.10/arm64-fix-branch-too-far-with-TBZ.patch
@@ -0,0 +1,50 @@
+From 0893ca552f7dddba10d8209bd28c69f86fcd791c Mon Sep 17 00:00:00 2001
+From: Cherry Zhang <cherr...@google.com>
+Date: Sat, 17 Feb 2018 10:31:39 -0500
+Subject: [PATCH] cmd/internal/obj/arm64: fix branch-too-far with TBZ like
instructions
+
+The compiler now emits TBZ like instructions, but the assembler's
+too-far-branch patch code didn't include that case. Add it.
+
+Fixes #23889.
+
+Change-Id: Ib75f9250c660b9fb652835fbc83263a5d5073dc5
+---
+Signed-off-by: Khem Raj <raj.k...@gmail.com>
+Upstream-Status: Backport
+
+diff --git a/src/cmd/internal/obj/arm64/asm7.go
b/src/cmd/internal/obj/arm64/asm7.go
+index 423f55f..38f1d24 100644
+--- a/src/cmd/internal/obj/arm64/asm7.go
++++ b/src/cmd/internal/obj/arm64/asm7.go
+@@ -723,9 +723,16 @@
+ o = c.oplook(p)
+
+ /* very large branches */
+- if (o.type_ == 7 || o.type_ == 39) && p.Pcond != nil {
// 7: BEQ and like, 39: CBZ and like
++ if (o.type_ == 7 || o.type_ == 39 || o.type_ == 40) &&
p.Pcond != nil { // 7: BEQ and like, 39: CBZ and like, 40: TBZ and like
+ otxt := p.Pcond.Pc - pc
+- if otxt <= -(1<<18)+10 || otxt >= (1<<18)-10 {
++ var toofar bool
++ switch o.type_ {
++ case 7, 39: // branch instruction encodes 19
bits
++ toofar = otxt <= -(1<<20)+10 || otxt >=
(1<<20)-10
++ case 40: // branch instruction encodes 14 bits
++ toofar = otxt <= -(1<<15)+10 || otxt >=
(1<<15)-10
++ }
++ if toofar {
+ q := c.newprog()
+ q.Link = p.Link
+ p.Link = q
+diff --git a/src/cmd/internal/obj/arm64/asm_test.go
b/src/cmd/internal/obj/arm64/asm_test.go
+index 369c48f..3e0c9c1 100644
+--- a/src/cmd/internal/obj/arm64/asm_test.go
++++ b/src/cmd/internal/obj/arm64/asm_test.go
+@@ -52,6 +52,7 @@
+ // gen generates a very large program, with a very far conditional branch.
+ func gen(buf *bytes.Buffer) {
+ fmt.Fprintln(buf, "TEXT f(SB),0,$0-0")
++ fmt.Fprintln(buf, "TBZ $5, R0, label")
+ fmt.Fprintln(buf, "CBZ R0, label")
+ fmt.Fprintln(buf, "BEQ label")
+ for i := 0; i < 1<<19; i++ {
--
2.16.2
--
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