diff options
| author | Klaatu <[email protected]> | 2015-05-17 15:33:21 +1200 |
|---|---|---|
| committer | Klaatu <[email protected]> | 2015-05-17 15:33:21 +1200 |
| commit | b0de699679e8f1e39af847ed172d1ba605b4370c (patch) | |
| tree | 01dac00471d61f727394e508c613b29cff0ceae5 /system/x86_64/start.S | |
bulk upload of source
Diffstat (limited to 'system/x86_64/start.S')
| -rw-r--r-- | system/x86_64/start.S | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/system/x86_64/start.S b/system/x86_64/start.S new file mode 100644 index 0000000..b31b9b1 --- /dev/null +++ b/system/x86_64/start.S @@ -0,0 +1,17 @@ +.text +.global _start +_start: + popq %rdi /* %rdi = argc */ + movq %rsp,%rsi /* %rsi = argv */ + pushq %rdi + + leaq 8(%rsi,%rdi,8),%rdx /* %rdx = envp = (8*rdi)+%rsi+8 */ + + movq %rdx, environ(%rip) + call main + movq %rax, %rdi /* return value */ + call exit + hlt +.Lstart: + .size _start,.Lstart-_start + |