Initial commit

.gitignore

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+*.o

x86_64/crt0.s

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+.section .text
+
+.global _start
+_start:
+	# Set up end of the stack frame linked list.
+	movq $0, %rbp
+	pushq %rbp # rip=0
+	pushq %rbp # rbp=0
+	movq %rsp, %rbp
+
+	# We need those in a moment when we call main.
+	pushq %rsi
+	pushq %rdi
+
+	# Prepare signals, memory allocation, stdio and such.
+	call initialize_standard_library
+
+	# Run the global constructors.
+	call _init
+
+	# Restore argc and argv.
+	popq %rdi
+	popq %rsi
+
+	# Run main
+	call main
+
+	# Terminate the process with the exit code.
+	movl %eax, %edi
+	call exit
+.size _start, . - _start

x86_64/crti.s

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+.section .init
+.global _init
+_init:
+   push %rbp
+   movq %rsp, %rbp
+   /* gcc will nicely put the contents of crtbegin.o's .init section here. */
+
+.section .fini
+.global _fini
+_fini:
+   push %rbp
+   movq %rsp, %rbp
+   /* gcc will nicely put the contents of crtbegin.o's .fini section here. */

x86_64/crtn.s

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+.section .init
+   /* gcc will nicely put the contents of crtend.o's .init section here. */
+   popq %rbp
+   ret
+
+.section .fini
+   /* gcc will nicely put the contents of crtend.o's .fini section here. */
+   popq %rbp
+   ret