The problem -fasynchronous-unwind-tables is on by default for aarch64
We need turn it off for crt*.o because it would make __EH_FRAME_BEGIN__ point
to .eh_frame data from crtbeginT.o instead of the user-defined object
during static linking.
This turns it off.
OK? Bootstrapped and tested on aarch64-linux-gnu with no regressions.
libgcc/ChangeLog:
* config.host (aarch64*-*-*): Add t-crtstuff to tmake_file.
* config/aarch64/t-crtstuff: New file.
---
libgcc/config.host | 6 ++++++
libgcc/config/aarch64/t-crtstuff | 5 +++++
2 files changed, 11 insertions(+)
create mode 100644 libgcc/config/aarch64/t-crtstuff
diff --git a/libgcc/config.host b/libgcc/config.host
index c94d69d84b7..b2d82041a69 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -390,6 +390,7 @@ aarch64*-*-elf | aarch64*-*-rtems*)
extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o"
extra_parts="$extra_parts crtfastmath.o"
tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+ tmake_file="${tmake_file} ${cpu_type}/t-crtstuff"
tmake_file="${tmake_file} ${cpu_type}/t-lse t-slibgcc-libgcc"
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
tmake_file="${tmake_file} t-dfprules"
@@ -398,6 +399,7 @@ aarch64*-*-elf | aarch64*-*-rtems*)
aarch64*-*-freebsd*)
extra_parts="$extra_parts crtfastmath.o"
tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+ tmake_file="${tmake_file} ${cpu_type}/t-crtstuff"
tmake_file="${tmake_file} ${cpu_type}/t-lse t-slibgcc-libgcc"
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
tmake_file="${tmake_file} t-dfprules"
@@ -406,12 +408,14 @@ aarch64*-*-freebsd*)
aarch64*-*-netbsd*)
extra_parts="$extra_parts crtfastmath.o"
tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+ tmake_file="${tmake_file} ${cpu_type}/t-crtstuff"
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
tmake_file="${tmake_file} t-dfprules"
md_unwind_header=aarch64/aarch64-unwind.h
;;
aarch64*-*-fuchsia*)
tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+ tmake_file="${tmake_file} ${cpu_type}/t-crtstuff"
tmake_file="${tmake_file} ${cpu_type}/t-lse t-slibgcc-libgcc"
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp"
tmake_file="${tmake_file} t-dfprules"
@@ -420,6 +424,7 @@ aarch64*-*-linux*)
extra_parts="$extra_parts crtfastmath.o"
md_unwind_header=aarch64/linux-unwind.h
tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+ tmake_file="${tmake_file} ${cpu_type}/t-crtstuff"
tmake_file="${tmake_file} ${cpu_type}/t-lse t-slibgcc-libgcc"
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
tmake_file="${tmake_file} t-dfprules"
@@ -428,6 +433,7 @@ aarch64*-*-vxworks7*)
extra_parts="$extra_parts crtfastmath.o"
md_unwind_header=aarch64/aarch64-unwind.h
tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+ tmake_file="${tmake_file} ${cpu_type}/t-crtstuff"
tmake_file="${tmake_file} ${cpu_type}/t-lse"
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
tmake_file="${tmake_file} t-dfprules"
diff --git a/libgcc/config/aarch64/t-crtstuff b/libgcc/config/aarch64/t-crtstuff
new file mode 100644
index 00000000000..2e2814e6c67
--- /dev/null
+++ b/libgcc/config/aarch64/t-crtstuff
@@ -0,0 +1,5 @@
+# -fasynchronous-unwind-tables -funwind-tables is on by default for aarch64
+# We turn it off for crt*.o because it would make __EH_FRAME_BEGIN__ point
+# to .eh_frame data from crtbeginT.o instead of the user-defined object
+# during static linking.
+CRTSTUFF_T_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables
--
2.39.1
