From de20d7430df08731d9108acb83e1234ba7f1fe16 Mon Sep 17 00:00:00 2001 From: Benji Dial Date: Sat, 19 Sep 2020 14:53:29 -0400 Subject: file manager --- src/user/runtimes/c/entry.asm | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 src/user/runtimes/c/entry.asm (limited to 'src/user/runtimes/c/entry.asm') diff --git a/src/user/runtimes/c/entry.asm b/src/user/runtimes/c/entry.asm new file mode 100644 index 0000000..bba8060 --- /dev/null +++ b/src/user/runtimes/c/entry.asm @@ -0,0 +1,42 @@ +bits 32 + +global __pcrt_entry +global __pcrt_quit + +extern main +extern __pcrt_before_main_start +extern __pcrt_before_main_end +extern __pcrt_before_quit_start +extern __pcrt_before_quit_end + +section .text +__pcrt_entry: + mov esp, stack + push edx + + mov ebx, __pcrt_before_main_start +.before_main_loop: + cmp ebx, __pcrt_before_main_end + je .call_main + call dword [ebx] + add ebx, 4 + jmp .before_main_loop + +.call_main: + call main + +__pcrt_quit: + mov ebx, __pcrt_before_quit_start +.before_quit_loop: + cmp ebx, __pcrt_before_quit_end + je .end_task + call dword [ebx] + add ebx, 4 + jmp .before_quit_loop + +.end_task: + int 0x38 + +section .stack nobits alloc noexec write align=16 +resb 4096 +stack: \ No newline at end of file -- cgit v1.2.3