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| author | Benji Dial <benji6283@gmail.com> | 2020-09-19 14:53:29 -0400 |
|---|---|---|
| committer | Benji Dial <benji6283@gmail.com> | 2020-09-19 14:53:29 -0400 |
| commit | de20d7430df08731d9108acb83e1234ba7f1fe16 (patch) | |
| tree | 8646f3d1bae3d30391df34766e3e58c0c2af8aab /src/user/runtimes/c/entry.asm | |
| parent | 20853582d5385d12421433d21910e783caa00764 (diff) | |
| download | portland-os-de20d7430df08731d9108acb83e1234ba7f1fe16.tar.gz | |
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Diffstat (limited to 'src/user/runtimes/c/entry.asm')
| -rw-r--r-- | src/user/runtimes/c/entry.asm | 42 |
1 files changed, 42 insertions, 0 deletions
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:
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