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LibC: Rework constructor/destructor calling

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constructors are now called in _init_libc instead of crt0

destructors are now registered with atexit() instead of called manually
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Bananymous
2025-04-15 22:29:26 +03:00
parent 066ed7e4a1
commit cf59f89bfb
4 changed files with 46 additions and 37 deletions
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23
userspace/libraries/LibC/arch/x86_64/crt0.S
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@@ -17,21 +17,18 @@ _start:
# init libc
movq 0(%rsp), %rdi
pushq $__fini_array_end
pushq $__fini_array_start
pushq $_fini
pushq $__init_array_end
pushq $__init_array_start
pushq $_init
call _init_libc
# call global constructors
movq $_init, %rax
testq %rax, %rax
jz 1f
call *%rax
1:
movq $__init_array_start, %rbx
jmp 2f
1: call *(%rbx)
addq $8, %rbx
2: cmpq $__init_array_end, %rbx
jne 1b
addq $(6 * 8), %rsp
# call main
movq 16(%rsp), %rdi