2bc994456c
* separate initialization routines into _start and do_start for all architectures. * lift do_start as a separate object library to avoid code duplication. * (addtionally) address the problem of building hermetic libc with -fstack-pointer-* The `crt1.o` is now a merged result of three components: ``` ___ |___ x86_64 | |_______ start.cpp.o <- _start (loads process initial stack and aligns stack pointer) | |_______ tls.cpp.o <- init_tls, cleanup_tls, set_thread_pointer (TLS related routines) |___ do_start.cpp.o <- do_start (sets up global variables and invokes the main function) ```
26 lines
566 B
CMake
26 lines
566 B
CMake
add_startup_object(
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tls
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SRC
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tls.cpp
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DEPENDS
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libc.config.linux.app_h
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libc.include.sys_mman
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libc.include.sys_syscall
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libc.src.__support.OSUtil.osutil
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libc.src.string.memory_utils.inline_memcpy
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COMPILE_OPTIONS
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-fno-omit-frame-pointer
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-ffreestanding # To avoid compiler warnings about calling the main function.
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)
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add_startup_object(
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start
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SRC
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start.cpp
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DEPENDS
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libc.config.linux.app_h
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COMPILE_OPTIONS
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-fno-omit-frame-pointer
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-ffreestanding # To avoid compiler warnings about calling the main function.
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)
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