Chroma/global/crt0.s

.section .text
.global _start
.global _init
.global Main
.global Exit
.type _start, @function
_start:
	push %rbp
	movq %rsp, %rbp
	sub $0x10, %rsp

	xor %rax, %rax
	call _init

	xor %rbp, %rbp
	
	xor %rax, %rax
	call Main

	movq %rax, %rdi
	call Exit
Add support for C++ This was a doozy. I had to recompile gcc with a custom target to get it to output the CRT{BEGIN/END}.o files with proper 64 bit relocations. The CMakeLists.txt file was also edited to allow these files to be linked (thereby actually adding the support) as well as to automatically create the boot image upon build. 2020-08-27 00:39:56 +00:00			`.section .text`
			`.global _start`
			`.global _init`
Adjust the crt0 file to insert a null stack frame before calling the kernel. Provides a solid base for the stack unwinding. 2020-11-09 18:44:42 +00:00			`.global Main`
			`.global Exit`
Add support for C++ This was a doozy. I had to recompile gcc with a custom target to get it to output the CRT{BEGIN/END}.o files with proper 64 bit relocations. The CMakeLists.txt file was also edited to allow these files to be linked (thereby actually adding the support) as well as to automatically create the boot image upon build. 2020-08-27 00:39:56 +00:00			`.type _start, @function`
			`_start:`
Adjust the crt0 file to insert a null stack frame before calling the kernel. Provides a solid base for the stack unwinding. 2020-11-09 18:44:42 +00:00			`push %rbp`
			`movq %rsp, %rbp`
			`sub $0x10, %rsp`

			`xor %rax, %rax`
Add support for C++ This was a doozy. I had to recompile gcc with a custom target to get it to output the CRT{BEGIN/END}.o files with proper 64 bit relocations. The CMakeLists.txt file was also edited to allow these files to be linked (thereby actually adding the support) as well as to automatically create the boot image upon build. 2020-08-27 00:39:56 +00:00			`call _init`
Adjust the crt0 file to insert a null stack frame before calling the kernel. Provides a solid base for the stack unwinding. 2020-11-09 18:44:42 +00:00
			`xor %rbp, %rbp`

			`xor %rax, %rax`
			`call Main`

			`movq %rax, %rdi`
			`call Exit`