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ASM Debugger Online
shift right with sign extension instruction (sar) is not supported.
I believe this is an accurate python implementation (though it could likely be more efficient without the branch).
Note: This implementation works on unsigned numbers (because python numbers can be arbitrarily large):
def sar(x, n, sz=32):
return (x >> n) | (((2**n - 1) << (sz - n)) if (x & (1 << (sz-1))) else 0)
The CF is always set to 0
after executing neg
.
Expected behavior, from https://c9x.me/x86/html/file_module_x86_id_216.html
The CF flag set to 0 if the source operand is 0; otherwise it is set to 1
I tried this
start:
mov edx,256
push edx
But not work
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