cmake:bugfix refine gen sim link script to independent cmake module
fix SIM start crash on Ubuntu22,
becase the previous CMake linker script has missing handling of
C++ global constructor sections in the new Glibc version on ubuntu22
it will cause a prior c++ constructor call error:
0x00000000400317f6 in nxsched_get_stackinfo (pid=0, stackinfo=0x7fffffffdbc0) at /media/liujinye/ssd/vela-dev/nuttx/sched/sched/sched_get_stackinfo.c:101
0x000000004002de0d in tls_get_info () at /media/liujinye/ssd/vela-dev/nuttx/libs/libc/tls/tls_getinfo.c:61
0x000000004002ddc8 in task_get_info () at /media/liujinye/ssd/vela-dev/nuttx/libs/libc/tls/task_getinfo.c:50
0x000000004002c74e in atexit_register (type=4, func=0x40044eac <CHelloWorld::~CHelloWorld()>, arg=0x40061418 <g_HelloWorld>, dso=0x40060000)
at /media/liujinye/ssd/vela-dev/nuttx/libs/libc/stdlib/lib_atexit.c:68
0x000000004002ca34 in __cxa_atexit (func=0x40044eac <CHelloWorld::~CHelloWorld()>, arg=0x40061418 <g_HelloWorld>, dso_handle=0x40060000)
at /media/liujinye/ssd/vela-dev/nuttx/libs/libc/stdlib/lib_atexit.c:268
0x000000004004502b in __static_initialization_and_destruction_0 () at /media/liujinye/ssd/vela-dev/apps/examples/helloxx/helloxx_main.cxx:93
0x000000004004503e in _GLOBAL__sub_I_helloxx_main () at /media/liujinye/ssd/vela-dev/apps/examples/helloxx/helloxx_main.cxx:129
0x00007ffff7829ebb in call_init (env=<optimized out>, argv=0x7fffffffdd18, argc=1) at ../csu/libc-start.c:145
__libc_start_main_impl (main=0x40004dc8 <main>, argc=1, argv=0x7fffffffdd18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7fffffffdd08) at ../csu/libc-start.c:379
0x0000000040004285 in _start ()
Signed-off-by: xuxin19 <xuxin19@xiaomi.com>
This commit is contained in:
xuxin19
Xiang Xiao
parent
9cbdf69fb0
commit
1603e40607
@ -688,44 +688,17 @@ elseif(WIN32)
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target_link_libraries(nuttx PRIVATE $<TARGET_OBJECTS:sim_head>
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${CMAKE_BINARY_DIR}/nuttx_all.lib)
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else()
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if(NOT APPLE)
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# generate SIM ld.script for cheat C++ global construction
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include(nuttx_generate_sim_ld)
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endif()
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# On sim platform the link step is a little different. NuttX is first built
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# into a partially linked relocatable object nuttx.rel with no interface to
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# host OS. Then, the names of symbols that conflict with libc symbols are
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# renamed. The final nuttx binary is built by linking the host-specific
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# objects with the relocatable binary.
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# C++ global objects are constructed before main get executed, but it isn't a
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# good point for simulator because NuttX doesn't finish the kernel
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# initialization yet. So we have to skip the standard facilities and do the
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# construction by ourself. But how to achieve the goal? 1.Command linker
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# generate the default script(-verbose) 2.Replace
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# __init_array_start/__init_array_end with _sinit/_einit 3.Append
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# __init_array_start = .; __init_array_end = .; Step 2 let nxtask_startup find
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# objects need to construct Step 3 cheat the host there is no object to
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# construct Note: the destructor can be fixed in the same way.
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if(NOT APPLE)
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add_custom_command(
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OUTPUT nuttx.ld
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COMMAND
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${CMAKE_C_COMPILER} ${CMAKE_EXE_LINKER_FLAGS}
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$<$<BOOL:${CONFIG_SIM_M32}>:-m32> -Wl,-verbose 2> /dev/null >
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nuttx-orig.ld || true
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COMMAND
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cat nuttx-orig.ld | sed -e '/====/,/====/!d\;//d' -e
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's/__executable_start/_stext/g' -e 's/__init_array_start/_sinit/g' -e
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's/__init_array_end/_einit/g' -e 's/__fini_array_start/_sfini/g' -e
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's/__fini_array_end/_efini/g' > nuttx.ld
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COMMAND
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echo ARGS
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'__init_array_start = .\; __init_array_end = .\; __fini_array_start = .\; __fini_array_end = .\;'
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>> nuttx.ld
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COMMAND sed -i '/\\.data *:/i " ${CONFIG_SIM_CUSTOM_DATA_SECTION} " '
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nuttx.ld)
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endif()
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# conflicting symbols to rename
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include(nuttx_redefine_symbols)
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# TODO: do with single function call?
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65
cmake/nuttx_generate_sim_ld.cmake
Normal file
65
cmake/nuttx_generate_sim_ld.cmake
Normal file
@ -0,0 +1,65 @@
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# ##############################################################################
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# cmake/nuttx_generate_sim_ld.cmake
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more contributor
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# license agreements. See the NOTICE file distributed with this work for
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# additional information regarding copyright ownership. The ASF licenses this
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# file to you under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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#
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# ##############################################################################
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# cmake-format: off
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# C++ global objects are constructed before main get executed, but it isn't a
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# good point for simulator because NuttX doesn't finish the kernel
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# initialization yet.
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# So we have to skip the standard facilities and do the construction by ourself.
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# But how to achieve the goal?
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# 1.Command linker generate the default script(-verbose)
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# 2.Replace __init_array_start/__init_array_end with _sinit/_einit
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# 3.Append __init_array_start = .; __init_array_end = .;
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# Step 2 let nxtask_startup find objects need to construct
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# Step 3 cheat the host there is no object to construct
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# Note: the destructor can be fixed in the same way.
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set(PROCESS_SIM_LD_SCRIPT
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[[
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#!/bin/sh
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original_ld="$1"
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target_ld="$2"
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cat $original_ld | \
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sed -e '/====/,/====/!d;//d' \
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-e '/__executable_start/s/$/PROVIDE(_stext = .);/' \
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-e 's/^\(\s\+\)\(\.init_array\)/\1\2 : { }\n\1.sinit/g' \
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-e 's/^\(\s\+\)\(\.fini_array\)/\1\2 : { }\n\1.einit/g' \
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-e 's/__init_array_start/_sinit/g' -e 's/__init_array_end/_einit/g' \
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-e 's/__fini_array_start/_sfini/g' -e 's/__fini_array_end/_efini/g' > "$target_ld"
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echo "__init_array_start = .; __init_array_end = .; __fini_array_start = .; __fini_array_end = .;" >> "$target_ld"
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]])
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# cmake-format: on
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file(WRITE ${CMAKE_BINARY_DIR}/process_sim_ld_script.sh
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"${PROCESS_SIM_LD_SCRIPT}")
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file(
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COPY ${CMAKE_BINARY_DIR}/process_sim_ld_script.sh
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DESTINATION ${CMAKE_BINARY_DIR}
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FILE_PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ)
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add_custom_command(
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OUTPUT nuttx.ld
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COMMAND
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${CMAKE_C_COMPILER} ${CMAKE_EXE_LINKER_FLAGS}
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$<$<BOOL:${CONFIG_SIM_M32}>:-m32> -Wl,-verbose 2> /dev/null > nuttx-orig.ld
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|| true
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COMMAND sh process_sim_ld_script.sh nuttx-orig.ld nuttx.ld
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COMMAND sed -i '/\\.data *:/i " ${CONFIG_SIM_CUSTOM_DATA_SECTION} " ' nuttx.ld
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COMMENT "Generating sim linker script nuttx.ld"
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WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
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