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extern puts
global foo
section .rodata
message:
db 'foo() called', 0
section .text
;; Long nop macros for nasm/yasm borrowed from nasm-utils:
;; https://github.com/travisdowns/nasm-utils
%define nop1 nop ; just a nop, included for completeness
%define nop2 db 0x66, 0x90 ; 66 NOP
%define nop3 db 0x0F, 0x1F, 0x00 ; NOP DWORD ptr [EAX]
%define nop4 db 0x0F, 0x1F, 0x40, 0x00 ; NOP DWORD ptr [EAX + 00H]
%define nop5 db 0x0F, 0x1F, 0x44, 0x00, 0x00 ; NOP DWORD ptr [EAX + EAX*1 + 00H]
%define nop6 db 0x66, 0x0F, 0x1F, 0x44, 0x00, 0x00 ; 66 NOP DWORD ptr [EAX + EAX*1 + 00H]
%define nop7 db 0x0F, 0x1F, 0x80, 0x00, 0x00, 0x00, 0x00 ; NOP DWORD ptr [EAX + 00000000H]
%define nop8 db 0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 ; NOP DWORD ptr [EAX + EAX*1 + 00000000H]
%define nop9 db 0x66, 0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 ; 66 NOP DWORD ptr [EAX + EAX*1 + 00000000H]
foo:
push ebp
mov ebp, esp
sub esp, 4 ; align the stack to a 16-byte boundary
push message
call puts
mov esp, ebp
pop ebp
ret
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