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arch/crt0.c: revert entry _start

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This reverts crt0.c entry name to _start to fix LTO issue/17443,
needs apps/ side pull/3235.

Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
This commit is contained in:
Yanfeng Liu 2025-12-08 19:36:02 +08:00 • committed by Xiang Xiao
parent af205ebd39
commit c38042941f
11 changed files with 18 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

2
arch/arm/src/common/Toolchain.defs
View file

@ -572,7 +572,7 @@ ifneq ($(CONFIG_BUILD_KERNEL),y)
LDELFFLAGS += $(TOPDIR)$(DELIM)arch$(DELIM)arm$(DELIM)src$(DELIM)crt0.o
endif
LDELFFLAGS += -e __start -T $(call CONVERT_PATH,$(TOPDIR)$(DELIM)libs$(DELIM)libc$(DELIM)elf$(DELIM)gnu-elf.ld)
LDELFFLAGS += -e _start -T $(call CONVERT_PATH,$(TOPDIR)$(DELIM)libs$(DELIM)libc$(DELIM)elf$(DELIM)gnu-elf.ld)
# Zig toolchain

4
arch/arm/src/common/crt0.c
View file

@ -141,7 +141,7 @@ static void exec_dtors(void)
****************************************************************************/
/****************************************************************************
* Name: __start
* Name: _start
*
* Description:
* This function is the low level entry point into the main thread of
@ -160,7 +160,7 @@ static void exec_dtors(void)
*
****************************************************************************/
void __start(int argc, char *argv[])
void _start(int argc, char *argv[])
{
int ret;

2
arch/arm64/src/Toolchain.defs
View file

@ -288,7 +288,7 @@ LDMODULEFLAGS = -r -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/elf/gnu-elf.ld)
CELFFLAGS = $(CFLAGS) -fvisibility=hidden # --target1-abs
CXXELFFLAGS = $(CXXFLAGS) -fvisibility=hidden # --target1-abs
LDELFFLAGS = -r -e __start
LDELFFLAGS = -r -e _start
ifneq ($(CONFIG_BUILD_KERNEL),y)
# Flat build and protected elf entry point use crt0,
# Kernel build will use apps/import/scripts/crt0

4
arch/arm64/src/common/crt0.c
View file

@ -148,7 +148,7 @@ static void exec_dtors(void)
****************************************************************************/
/****************************************************************************
* Name: __start
* Name: _start
*
* Description:
* This function is the low level entry point into the main thread of
@ -167,7 +167,7 @@ static void exec_dtors(void)
*
****************************************************************************/
void __start(int argc, char *argv[])
void _start(int argc, char *argv[])
{
int ret;

4
arch/risc-v/src/common/crt0.c
View file

@ -145,7 +145,7 @@ static void exec_dtors(void)
****************************************************************************/
/****************************************************************************
* Name: __start
* Name: _start
*
* Description:
* This function is the low level entry point into the main thread of
@ -164,7 +164,7 @@ static void exec_dtors(void)
*
****************************************************************************/
void __start(int argc, char *argv[])
void _start(int argc, char *argv[])
{
int ret;

2
arch/x86_64/src/common/Toolchain.defs
View file

@ -258,7 +258,7 @@ LDMODULEFLAGS = -r -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/elf/gnu-elf.ld)
CELFFLAGS = $(CFLAGS) -fvisibility=hidden
CXXELFFLAGS = $(CXXFLAGS) -fvisibility=hidden
LDELFFLAGS = -r -e __start
LDELFFLAGS = -r -e _start
ifneq ($(CONFIG_BUILD_KERNEL),y)
# Flat build and protected elf entry point use crt0,
# Kernel build will use apps/import/scripts/crt0

4
arch/x86_64/src/common/crt0.c
View file

@ -130,7 +130,7 @@ static void exec_dtors(void)
****************************************************************************/
/****************************************************************************
* Name: __start
* Name: _start
*
* Description:
* This function is the low level entry point into the main thread of
@ -149,7 +149,7 @@ static void exec_dtors(void)
*
****************************************************************************/
void __start(int argc, char *argv[])
void _start(int argc, char *argv[])
{
int ret;

4
arch/xtensa/src/common/crt0.c
View file

@ -96,7 +96,7 @@ static void exec_dtors(void)
****************************************************************************/
/****************************************************************************
* Name: __start
* Name: _start
*
* Description:
* This function is the low level entry point into the main thread of
@ -115,7 +115,7 @@ static void exec_dtors(void)
*
****************************************************************************/
void __start(int argc, char *argv[])
void _start(int argc, char *argv[])
{
int ret;

2
arch/xtensa/src/lx6/Toolchain.defs
View file

@ -232,7 +232,7 @@ LDMODULEFLAGS = -r -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/elf/gnu-elf.ld)
CELFFLAGS = $(CFLAGS) -fvisibility=hidden -mtext-section-literals
CXXELFFLAGS = $(CXXFLAGS) -fvisibility=hidden -mtext-section-literals
LDELFFLAGS = -r -e __start
LDELFFLAGS = -r -e _start
LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)$(DELIM)libs$(DELIM)libc$(DELIM)elf$(DELIM)gnu-elf.ld)
ifneq ($(CONFIG_BUILD_KERNEL),y)
# Flat build and protected elf entry point use crt0,

2
arch/xtensa/src/lx7/Toolchain.defs
View file

@ -236,7 +236,7 @@ LDMODULEFLAGS = -r -T $(call CONVERT_PATH,$(TOPDIR)/libs/libc/elf/gnu-elf.ld)
CELFFLAGS = $(CFLAGS) -fvisibility=hidden -mtext-section-literals
CXXELFFLAGS = $(CXXFLAGS) -fvisibility=hidden -mtext-section-literals
LDELFFLAGS = -r -e __start
LDELFFLAGS = -r -e _start
LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)$(DELIM)libs$(DELIM)libc$(DELIM)elf$(DELIM)gnu-elf.ld)
ifneq ($(CONFIG_BUILD_KERNEL),y)
# Flat build and protected elf entry point use crt0,

5
tools/toolchain.cmake.export
View file

@ -22,8 +22,9 @@ set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES
add_compile_options(-nostdlib)
add_compile_options(-ffunction-sections -fdata-sections)
# same entry used for all build modes in crt0.c and arch/.../xxx_start.c
set(ENTRY_NAME "__start")
# same entry used for all build modes in crt0.c
set(ENTRY_NAME "_start")
set(CMAKE_C_LINK_EXECUTABLE
"<CMAKE_LINKER> ${LDFLAGS} --entry=${ENTRY_NAME} -T${LINKER_SCRIPT} <OBJECTS> -o <TARGET> <LINK_LIBRARIES> -L${NUTTX_PATH}/libs --start-group ${LDLIBS} ${EXTRA_LIBS} --end-group"