cmake/elf: Fix ELF entry point from __start to _start

leisiji · leisiji · commit 48e89b20e690 · 2026-06-06T10:12:37.000+08:00
__start is the kernel boot entry for each chip, while _start (defined
in crt0.c) is the correct C runtime entry point for ELF executables.
diff --git a/arch/arm/src/cmake/elf.cmake b/arch/arm/src/cmake/elf.cmake
@@ -46,4 +46,4 @@ if(CONFIG_DEBUG_OPT_UNUSED_SECTIONS)
   endif()
 endif()
 
-nuttx_elf_link_options(-e __start)
+nuttx_elf_link_options(-e _start)
diff --git a/arch/arm64/src/cmake/elf.cmake b/arch/arm64/src/cmake/elf.cmake
@@ -32,4 +32,4 @@ nuttx_elf_link_options_ifdef(CONFIG_BUILD_KERNEL -Bstatic)
 
 nuttx_elf_link_options_ifdef(CONFIG_DEBUG_OPT_UNUSED_SECTIONS --gc-sections)
 
-nuttx_elf_link_options(-e __start)
+nuttx_elf_link_options(-e _start)
diff --git a/arch/x86_64/src/cmake/elf.cmake b/arch/x86_64/src/cmake/elf.cmake
@@ -30,4 +30,4 @@ nuttx_mod_link_options(-r)
 
 nuttx_elf_link_options_ifdef(CONFIG_DEBUG_OPT_UNUSED_SECTIONS --gc-sections)
 
-nuttx_elf_link_options(-e __start)
+nuttx_elf_link_options(-e _start)

Original file line number	Diff line number	Diff line change
`@@ -32,4 +32,4 @@ nuttx_elf_link_options_ifdef(CONFIG_BUILD_KERNEL -Bstatic)`
`32`	`32`
`33`	`33`	`nuttx_elf_link_options_ifdef(CONFIG_DEBUG_OPT_UNUSED_SECTIONS --gc-sections)`
`34`	`34`
`35`		`-nuttx_elf_link_options(-e __start)`
	`35`	`+nuttx_elf_link_options(-e _start)`
Original file line number	Diff line number	Diff line change
`@@ -30,4 +30,4 @@ nuttx_mod_link_options(-r)`
`30`	`30`
`31`	`31`	`nuttx_elf_link_options_ifdef(CONFIG_DEBUG_OPT_UNUSED_SECTIONS --gc-sections)`
`32`	`32`
`33`		`-nuttx_elf_link_options(-e __start)`
	`33`	`+nuttx_elf_link_options(-e _start)`