From b9fad1ab2ad3bd87bff05c4688c978d582ada438 Mon Sep 17 00:00:00 2001 From: Anas Nashif Date: Tue, 15 May 2012 22:27:48 +0100 Subject: Upstream version 2.08rc7 --- rdoff/test/rdtmain.asm | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 rdoff/test/rdtmain.asm (limited to 'rdoff/test/rdtmain.asm') diff --git a/rdoff/test/rdtmain.asm b/rdoff/test/rdtmain.asm new file mode 100644 index 0000000..626a2e2 --- /dev/null +++ b/rdoff/test/rdtmain.asm @@ -0,0 +1,47 @@ + ;; rdtmain - main part of test program for RDX execution. + ;; returns true (0) if its parameter equals the phrase "hello" + ;; "hello" is stored in the library part, to complicate the + ;; linkage. + + ;; assemble and link with the following commands: + ;; nasm -f rdf rdtmain.asm + ;; nasm -f rdf rdtlib.asm + ;; ldrdf rdtmain.rdf rdtlib.rdf -o rdxtest.rdx + + ;; run with 'rdx rdxtest.rdx [parameters]' on a Linux (or possibly + ;; other 32 bit OS) systems (x86 architectures only!) + ;; try using '&& echo Yes' afterwards to find out when it returns 0. + +[EXTERN _strcmp] ; strcmp is an imported function +[EXTERN _message] ; imported data +[SECTION .text] +[BITS 32] + + ;; main(int argc,char **argv) +[GLOBAL _main] +_main: + push ebp + mov ebp,esp + + ;; ebp+8 = argc, ebp+12 = argv + + cmp dword [ebp+8],2 + jb error ; cause error if < 1 parameters + + mov eax, [ebp+12] ; eax = argv + + mov ebx, [eax+4] ; ebx = argv[1] + mov ecx, _message ; ecx = "hello" + + push ecx + push ebx + call _strcmp ; compare strings + add esp,8 ; caller clears stack + + pop ebp + ret ; return return value of _strcmp + +error: + mov eax,2 ; return 2 on error + pop ebp + ret -- cgit v1.2.3