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authorMatt Turner <mattst88@gmail.com>2008-03-24 20:17:22 +0000
committerMatt Turner <mattst88@gmail.com>2008-03-24 20:17:22 +0000
commite424b09269e6fd37fd1c69006fc971de74d16fb3 (patch)
tree904b7b337a35b12fba8a25fdcaee8e0d34955af2 /nexteven.asm
parentafda6f12adf869ca9b35eae215b2aa83b87de39a (diff)
Add 'previous even' and 'next even' examplesHEADmaster
git-svn-id: svn://mattst88.com/svn/x86_64-assembly/trunk@2 a323887f-d61c-418c-83a5-2e06a2a01087
Diffstat (limited to 'nexteven.asm')
-rw-r--r--nexteven.asm44
1 files changed, 44 insertions, 0 deletions
diff --git a/nexteven.asm b/nexteven.asm
new file mode 100644
index 0000000..b7b5c16
--- /dev/null
+++ b/nexteven.asm
@@ -0,0 +1,44 @@
+format ELF64
+
+extrn printf
+extrn puts
+extrn scanf
+public main
+
+section '.text' executable
+
+main:
+ push rbp
+ mov rbp,rsp
+
+ mov edi,prompt
+ call puts
+
+ sub rsp,16
+
+ mov rsi,rsp
+ mov edi,readint
+ xor eax,eax
+ call scanf
+
+ mov rax,[rsp]
+
+ add rsp,16
+
+ mov rdx,rax
+ and rdx,1
+ add rax,rdx
+
+ mov rsi,rax
+ mov edi,msg
+ xor eax,eax
+ call printf
+
+ leave
+ ret
+
+section '.data' writable align 16
+
+msg db "Next even integer is %ld",0xA,0
+prompt db "Enter an odd integer.",0
+readint db "%ld",0