Update dist-riscv64-linux to binutils 2.40

src/ci/docker/host-x86_64/dist-riscv64-linux/Dockerfile

@@ -11,6 +11,7 @@ RUN sh /scripts/rustbuild-setup.sh
 WORKDIR /tmp
 
 COPY scripts/crosstool-ng-build.sh /scripts/
+COPY host-x86_64/dist-riscv64-linux/patches/ /tmp/patches/
 COPY host-x86_64/dist-riscv64-linux/riscv64-unknown-linux-gnu.defconfig /tmp/crosstool.defconfig
 RUN /scripts/crosstool-ng-build.sh
 

src/ci/docker/host-x86_64/dist-riscv64-linux/patches/gcc/8.5.0/0001-divdi3-div-zero.patch

@@ -0,0 +1,37 @@
+From 4013baf99c38f7bca06a51f8301e8fb195ccfa33 Mon Sep 17 00:00:00 2001
+From: Jim Wilson <jimw@sifive.com>
+Date: Tue, 2 Jun 2020 11:19:39 -0700
+Subject: [PATCH] RISC-V: Make __divdi3 handle div by zero same as hardware.
+
+The ISA manual specifies that divide by zero always returns -1 as the result.
+We were failing to do that when the dividend was negative.
+
+Original patch from Virginie Moser.
+
+	libgcc/
+	* config/riscv/div.S (__divdi3): For negative arguments, change bgez
+	to bgtz.
+---
+ libgcc/config/riscv/div.S | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/libgcc/config/riscv/div.S b/libgcc/config/riscv/div.S
+index 151f8e273ac77..17234324c1e41 100644
+--- a/libgcc/config/riscv/div.S
++++ b/libgcc/config/riscv/div.S
+@@ -107,10 +107,12 @@ FUNC_END (__umoddi3)
+   /* Handle negative arguments to __divdi3.  */
+ .L10:
+   neg   a0, a0
+-  bgez  a1, .L12      /* Compute __udivdi3(-a0, a1), then negate the result.  */
++  /* Zero is handled as a negative so that the result will not be inverted.  */
++  bgtz  a1, .L12     /* Compute __udivdi3(-a0, a1), then negate the result.  */
++
+   neg   a1, a1
+-  j     __udivdi3     /* Compute __udivdi3(-a0, -a1).  */
+-.L11:                 /* Compute __udivdi3(a0, -a1), then negate the result.  */
++  j     __udivdi3    /* Compute __udivdi3(-a0, -a1).  */
++.L11:                /* Compute __udivdi3(a0, -a1), then negate the result.  */
+   neg   a1, a1
+ .L12:
+   move  t0, ra

src/ci/docker/host-x86_64/dist-riscv64-linux/patches/gcc/8.5.0/0002-hidden-jump-target.patch

@@ -0,0 +1,117 @@
+From 45116f342057b7facecd3d05c2091ce3a77eda59 Mon Sep 17 00:00:00 2001
+From: Nelson Chu <nelson.chu@sifive.com>
+Date: Mon, 29 Nov 2021 04:48:20 -0800
+Subject: [PATCH] RISC-V: jal cannot refer to a default visibility symbol for
+ shared object.
+
+This is the original binutils bugzilla report,
+https://sourceware.org/bugzilla/show_bug.cgi?id=28509
+
+And this is the first version of the proposed binutils patch,
+https://sourceware.org/pipermail/binutils/2021-November/118398.html
+
+After applying the binutils patch, I get the the unexpected error when
+building libgcc,
+
+/scratch/nelsonc/riscv-gnu-toolchain/riscv-gcc/libgcc/config/riscv/div.S:42:
+/scratch/nelsonc/build-upstream/rv64gc-linux/build-install/riscv64-unknown-linux-gnu/bin/ld: relocation R_RISCV_JAL against `__udivdi3' which may bind externally can not be used when making a shared object; recompile with -fPIC
+
+Therefore, this patch add an extra hidden alias symbol for __udivdi3, and
+then use HIDDEN_JUMPTARGET to target a non-preemptible symbol instead.
+The solution is similar to glibc as follows,
+https://sourceware.org/git/?p=glibc.git;a=commit;h=68389203832ab39dd0dbaabbc4059e7fff51c29b
+
+libgcc/ChangeLog:
+
+	* config/riscv/div.S: Add the hidden alias symbol for __udivdi3, and
+	then use HIDDEN_JUMPTARGET to target it since it is non-preemptible.
+	* config/riscv/riscv-asm.h: Added new macros HIDDEN_JUMPTARGET and
+	HIDDEN_DEF.
+---
+ libgcc/config/riscv/div.S       | 15 ++++++++-------
+ libgcc/config/riscv/riscv-asm.h |  6 ++++++
+ 2 files changed, 14 insertions(+), 7 deletions(-)
+
+diff --git a/libgcc/config/riscv/div.S b/libgcc/config/riscv/div.S
+index c9bd7879c1e36..723c3b82e48c6 100644
+--- a/libgcc/config/riscv/div.S
++++ b/libgcc/config/riscv/div.S
+@@ -40,7 +40,7 @@ FUNC_BEGIN (__udivsi3)
+   sll    a0, a0, 32
+   sll    a1, a1, 32
+   move   t0, ra
+-  jal    __udivdi3
++  jal    HIDDEN_JUMPTARGET(__udivdi3)
+   sext.w a0, a0
+   jr     t0
+ FUNC_END (__udivsi3)
+@@ -52,7 +52,7 @@ FUNC_BEGIN (__umodsi3)
+   srl    a0, a0, 32
+   srl    a1, a1, 32
+   move   t0, ra
+-  jal    __udivdi3
++  jal    HIDDEN_JUMPTARGET(__udivdi3)
+   sext.w a0, a1
+   jr     t0
+ FUNC_END (__umodsi3)
+@@ -95,11 +95,12 @@ FUNC_BEGIN (__udivdi3)
+ .L5:
+   ret
+ FUNC_END (__udivdi3)
++HIDDEN_DEF (__udivdi3)
+
+ FUNC_BEGIN (__umoddi3)
+   /* Call __udivdi3(a0, a1), then return the remainder, which is in a1.  */
+   move  t0, ra
+-  jal   __udivdi3
++  jal   HIDDEN_JUMPTARGET(__udivdi3)
+   move  a0, a1
+   jr    t0
+ FUNC_END (__umoddi3)
+@@ -111,12 +112,12 @@ FUNC_END (__umoddi3)
+   bgtz  a1, .L12     /* Compute __udivdi3(-a0, a1), then negate the result.  */
+
+   neg   a1, a1
+-  j     __udivdi3    /* Compute __udivdi3(-a0, -a1).  */
++  j     HIDDEN_JUMPTARGET(__udivdi3)     /* Compute __udivdi3(-a0, -a1).  */
+ .L11:                /* Compute __udivdi3(a0, -a1), then negate the result.  */
+   neg   a1, a1
+ .L12:
+   move  t0, ra
+-  jal   __udivdi3
++  jal   HIDDEN_JUMPTARGET(__udivdi3)
+   neg   a0, a0
+   jr    t0
+ FUNC_END (__divdi3)
+@@ -126,7 +127,7 @@ FUNC_BEGIN (__moddi3)
+   bltz   a1, .L31
+   bltz   a0, .L32
+ .L30:
+-  jal    __udivdi3    /* The dividend is not negative.  */
++  jal    HIDDEN_JUMPTARGET(__udivdi3)    /* The dividend is not negative.  */
+   move   a0, a1
+   jr     t0
+ .L31:
+@@ -134,7 +135,7 @@ FUNC_BEGIN (__moddi3)
+   bgez   a0, .L30
+ .L32:
+   neg    a0, a0
+-  jal    __udivdi3    /* The dividend is hella negative.  */
++  jal    HIDDEN_JUMPTARGET(__udivdi3)    /* The dividend is hella negative.  */
+   neg    a0, a1
+   jr     t0
+ FUNC_END (__moddi3)
+diff --git a/libgcc/config/riscv/riscv-asm.h b/libgcc/config/riscv/riscv-asm.h
+index 8550707a4a26a..96dd85b0df2e5 100644
+--- a/libgcc/config/riscv/riscv-asm.h
++++ b/libgcc/config/riscv/riscv-asm.h
+@@ -33,3 +33,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ #define FUNC_ALIAS(X,Y)		\
+ 	.globl X;		\
+ 	X = Y
++
++#define CONCAT1(a, b)		CONCAT2(a, b)
++#define CONCAT2(a, b)		a ## b
++#define HIDDEN_JUMPTARGET(X)	CONCAT1(__hidden_, X)
++#define HIDDEN_DEF(X)		FUNC_ALIAS(HIDDEN_JUMPTARGET(X), X);     \
++				.hidden HIDDEN_JUMPTARGET(X)

src/ci/docker/host-x86_64/dist-riscv64-linux/patches/glibc/2.29/0001-hidden-jump-target.patch

@@ -0,0 +1,58 @@
+From 68389203832ab39dd0dbaabbc4059e7fff51c29b Mon Sep 17 00:00:00 2001
+From: Fangrui Song <maskray@google.com>
+Date: Thu, 28 Oct 2021 11:39:49 -0700
+Subject: [PATCH] riscv: Fix incorrect jal with HIDDEN_JUMPTARGET
+
+A non-local STV_DEFAULT defined symbol is by default preemptible in a
+shared object. j/jal cannot target a preemptible symbol. On other
+architectures, such a jump instruction either causes PLT [BZ #18822], or
+if short-ranged, sometimes rejected by the linker (but not by GNU ld's
+riscv port [ld PR/28509]).
+
+Use HIDDEN_JUMPTARGET to target a non-preemptible symbol instead.
+
+With this patch, ld.so and libc.so can be linked with LLD if source
+files are compiled/assembled with -mno-relax/-Wa,-mno-relax.
+
+Acked-by: Palmer Dabbelt <palmer@dabbelt.com>
+Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+---
+ sysdeps/riscv/setjmp.S                     | 2 +-
+ sysdeps/unix/sysv/linux/riscv/setcontext.S | 5 +++--
+ 2 files changed, 4 insertions(+), 3 deletions(-)
+
+diff --git a/sysdeps/riscv/setjmp.S b/sysdeps/riscv/setjmp.S
+index 0b92016b311..bec7ff80f49 100644
+--- a/sysdeps/riscv/setjmp.S
++++ b/sysdeps/riscv/setjmp.S
+@@ -21,7 +21,7 @@
+
+ ENTRY (_setjmp)
+   li	a1, 0
+-  j	__sigsetjmp
++  j	HIDDEN_JUMPTARGET (__sigsetjmp)
+ END (_setjmp)
+ ENTRY (setjmp)
+   li	a1, 1
+diff --git a/sysdeps/unix/sysv/linux/riscv/setcontext.S b/sysdeps/unix/sysv/linux/riscv/setcontext.S
+index 9510518750a..e44a68aad47 100644
+--- a/sysdeps/unix/sysv/linux/riscv/setcontext.S
++++ b/sysdeps/unix/sysv/linux/riscv/setcontext.S
+@@ -95,6 +95,7 @@ LEAF (__setcontext)
+ 99:	j	__syscall_error
+
+ END (__setcontext)
++libc_hidden_def (__setcontext)
+ weak_alias (__setcontext, setcontext)
+
+ LEAF (__start_context)
+@@ -108,7 +109,7 @@ LEAF (__start_context)
+ 	/* Invoke subsequent context if present, else exit(0).  */
+ 	mv	a0, s2
+ 	beqz	s2, 1f
+-	jal	__setcontext
+-1:	j	exit
++	jal	HIDDEN_JUMPTARGET (__setcontext)
++1:	j	HIDDEN_JUMPTARGET (exit)
+
+ END (__start_context)

src/ci/docker/host-x86_64/dist-riscv64-linux/riscv64-unknown-linux-gnu.defconfig

@@ -3,14 +3,16 @@ CT_EXPERIMENTAL=y
 CT_PREFIX_DIR="/x-tools/${CT_TARGET}"
 CT_USE_MIRROR=y
 CT_MIRROR_BASE_URL="https://ci-mirrors.rust-lang.org/rustc"
+CT_PATCH_BUNDLED_LOCAL=y
+CT_LOCAL_PATCH_DIR="/tmp/patches"
 CT_ARCH_RISCV=y
 # CT_DEMULTILIB is not set
 CT_ARCH_USE_MMU=y
 CT_ARCH_64=y
 CT_ARCH_ARCH="rv64gc"
 CT_KERNEL_LINUX=y
 CT_LINUX_V_4_20=y
-CT_BINUTILS_V_2_36=y
+CT_BINUTILS_V_2_40=y
 CT_GLIBC_V_2_29=y
 CT_GCC_V_8=y
 CT_CC_LANG_CXX=y