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commit bbc1a102735c72e3c5a4dede8ab382813d12b058
Author: Andrew Pinski <apinski@marvell.com>
Date: Sat Jul 22 08:52:42 2023 -0700
Fix PR 110066: crash with -pg -static on riscv
The problem -fasynchronous-unwind-tables is on by default for riscv linux
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?
libgcc/ChangeLog:
* config.host (riscv*-*-linux*): Add t-crtstuff to tmake_file.
(riscv*-*-freebsd*): Likewise.
* config/riscv/t-crtstuff: New file.
--- a/src/libgcc/config.host
+++ b/src/libgcc/config.host
@@ -1304,12 +1304,12 @@ pru-*-*)
tm_file="$tm_file pru/pru-abi.h"
;;
riscv*-*-linux*)
- tmake_file="${tmake_file} riscv/t-softfp${host_address} t-softfp riscv/t-elf riscv/t-elf${host_address} t-slibgcc-libgcc"
+ tmake_file="${tmake_file} riscv/t-crtstuff riscv/t-softfp${host_address} t-softfp riscv/t-elf riscv/t-elf${host_address} t-slibgcc-libgcc"
extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o crtendS.o crtbeginT.o"
md_unwind_header=riscv/linux-unwind.h
;;
riscv*-*-freebsd*)
- tmake_file="${tmake_file} riscv/t-softfp${host_address} t-softfp riscv/t-elf riscv/t-elf${host_address} t-slibgcc-libgcc"
+ tmake_file="${tmake_file} riscv/t-crtstuff riscv/t-softfp${host_address} t-softfp riscv/t-elf riscv/t-elf${host_address} t-slibgcc-libgcc"
extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o crtendS.o crtbeginT.o"
;;
riscv*-*-*)
--- /dev/null
+++ b/src/libgcc/config/riscv/t-crtstuff
@@ -0,0 +1,5 @@
+# -fasynchronous-unwind-tables -funwind-tables is on by default for riscv linux
+# 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
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