From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 7877) id 05D12385840A; Fri, 29 Jul 2022 06:59:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 05D12385840A MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: LuluCheng To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-1885] LoongArch: Define the macro ASM_PREFERRED_EH_DATA_FORMAT by checking the assembler's support for eh_ X-Act-Checkin: gcc X-Git-Author: Lulu Cheng X-Git-Refname: refs/heads/master X-Git-Oldrev: 0c0feae60aa2f1a29d2624399cbcc6b1a52cc07c X-Git-Newrev: 201e8d9f82444403682cd583ce0a03e3e3dd2b73 Message-Id: <20220729065931.05D12385840A@sourceware.org> Date: Fri, 29 Jul 2022 06:59:31 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Jul 2022 06:59:31 -0000 https://gcc.gnu.org/g:201e8d9f82444403682cd583ce0a03e3e3dd2b73 commit r13-1885-g201e8d9f82444403682cd583ce0a03e3e3dd2b73 Author: Lulu Cheng Date: Fri Jul 29 09:44:52 2022 +0800 LoongArch: Define the macro ASM_PREFERRED_EH_DATA_FORMAT by checking the assembler's support for eh_frame encoding. .eh_frame DW_EH_PE_pcrel encoding format is not supported by gas <= 2.39. Check if the assembler support DW_EH_PE_PCREL encoding and define .eh_frame encoding type. gcc/ChangeLog: * config.in: Regenerate. * config/loongarch/loongarch.h (ASM_PREFERRED_EH_DATA_FORMAT): Select the value of the macro definition according to whether HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT is defined. * configure: Regenerate. * configure.ac: Reinstate HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT test. Diff: --- gcc/config.in | 8 +++++++- gcc/config/loongarch/loongarch.h | 5 +++++ gcc/configure | 34 ++++++++++++++++++++++++++++++++++ gcc/configure.ac | 8 ++++++++ 4 files changed, 54 insertions(+), 1 deletion(-) diff --git a/gcc/config.in b/gcc/config.in index 16bb963b45b..413b2bd36cb 100644 --- a/gcc/config.in +++ b/gcc/config.in @@ -404,13 +404,19 @@ #endif +/* Define if your assembler supports eh_frame pcrel encoding. */ +#ifndef USED_FOR_TARGET +#undef HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT +#endif + + /* Define if your assembler supports the R_PPC64_ENTRY relocation. */ #ifndef USED_FOR_TARGET #undef HAVE_AS_ENTRY_MARKERS #endif -/* Define if your assembler supports explicit relocations. */ +/* Define if your assembler supports explicit relocation. */ #ifndef USED_FOR_TARGET #undef HAVE_AS_EXPLICIT_RELOCS #endif diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h index 89a5bd728fe..8b1288961e4 100644 --- a/gcc/config/loongarch/loongarch.h +++ b/gcc/config/loongarch/loongarch.h @@ -1127,8 +1127,13 @@ struct GTY (()) machine_function }; #endif +#ifdef HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT +#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ + (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) +#else #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_absptr) +#endif /* Do emit .note.GNU-stack by default. */ #ifndef NEED_INDICATE_EXEC_STACK diff --git a/gcc/configure b/gcc/configure index 7eb9479ae8e..05efa5b01ef 100755 --- a/gcc/configure +++ b/gcc/configure @@ -28836,6 +28836,40 @@ if test $gcc_cv_as_loongarch_explicit_relocs = yes; then $as_echo "#define HAVE_AS_EXPLICIT_RELOCS 1" >>confdefs.h +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for eh_frame pcrel encoding support" >&5 +$as_echo_n "checking assembler for eh_frame pcrel encoding support... " >&6; } +if ${gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support+:} false; then : + $as_echo_n "(cached) " >&6 +else + gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support=no + if test x$gcc_cv_as != x; then + $as_echo '.cfi_startproc + .cfi_personality 0x9b,a + .cfi_lsda 0x1b,b + .cfi_endproc' > conftest.s + if { ac_try='$gcc_cv_as $gcc_cv_as_flags -o conftest.o conftest.s >&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } + then + gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support=yes + else + echo "configure: failed program was" >&5 + cat conftest.s >&5 + fi + rm -f conftest.o conftest.s + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support" >&5 +$as_echo "$gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support" >&6; } +if test $gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support = yes; then + +$as_echo "#define HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT 1" >>confdefs.h + fi ;; diff --git a/gcc/configure.ac b/gcc/configure.ac index e5f708c6b38..f70b6c24fda 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -5302,6 +5302,14 @@ x: [a:pcalau12i $t0,%pc_hi20(a)],, [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, [Define if your assembler supports explicit relocation.])]) + gcc_GAS_CHECK_FEATURE([eh_frame pcrel encoding support], + gcc_cv_as_loongarch_eh_frame_pcrel_encoding_support,, + [.cfi_startproc + .cfi_personality 0x9b,a + .cfi_lsda 0x1b,b + .cfi_endproc],, + [AC_DEFINE(HAVE_AS_EH_FRAME_PCREL_ENCODING_SUPPORT, 1, + [Define if your assembler supports eh_frame pcrel encoding.])]) ;; s390*-*-*) gcc_GAS_CHECK_FEATURE([.gnu_attribute support],