Kernel/LibC: Add support for init_array and fini_array

2024-08-26 14:04:58 +03:00
parent 7c4b9218f2
commit 2c520391eb
18 changed files with 154 additions and 51 deletions
--- a/userspace/libraries/LibC/arch/x86_64/crt0.S
+++ b/userspace/libraries/LibC/arch/x86_64/crt0.S
@@ -22,6 +22,14 @@ _start:
 	# call global constructors
 	call _init

+	movq $__init_array_start, %rbx
+	jmp 2f
+ 1: movq (%rbx), %rax
+    call *%rax
+	addq $8, %rbx
+ 2: cmpq $__init_array_end, %rbx
+	jne 1b
+
 	# call main
 	movq 16(%rsp), %rdi
 	movq  8(%rsp), %rsi
--- a/userspace/libraries/LibC/arch/x86_64/crti.S
+++ b/userspace/libraries/LibC/arch/x86_64/crti.S
@@ -14,3 +14,11 @@ _fini:
 	pushq %rbp
 	movq %rsp, %rbp
 	/* gcc will nicely put the contents of crtbegin.o's .fini section here. */
+
+.section .init_array
+.global __init_array_start
+__init_array_start:
+
+.section .fini_array
+.global __fini_array_start
+__fini_array_start:
--- a/userspace/libraries/LibC/arch/x86_64/crtn.S
+++ b/userspace/libraries/LibC/arch/x86_64/crtn.S
@@ -8,3 +8,11 @@
 	/* gcc will nicely put the contents of crtend.o's .fini section here. */
 	popq %rbp
 	ret
+
+.section .init_array
+.global __init_array_end
+__init_array_end:
+
+.section .fini_array
+.global __fini_array_end
+__fini_array_end: