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|
;original code:
;http://ftp-developpez.com/dap/codetiming.zip
;author:
;http://dap.developpez.com/
format ELF executable 3
include 'include/linux/lin32a.inc'
interpreter '/lib/ld-linux.so.2'
needed 'libc.so.6'
import printf,\
puts
macro serialize
{
xor eax, eax
cpuid
}
;-------------------------------------------------------------------------
segment readable writable executable
;-------------------------------------------------------------------------
entry $
repeat 5
xor eax,eax
cpuid
end repeat
mov ebx,nbTests ;number of tests
mov esi,ticks ;offset of ticks[]
mov edi,overheads ;offset of overheads[]
loopTests:
push ebx
push edi
push esi
;Count the number of cycles of an empty code (overhead)
serialize
rdtsc
push eax ;save first count
serialize
serialize
rdtsc
push eax ;save second count
serialize
pop eax ;retrieve second count
pop ecx ;retrieve first count
sub eax,ecx ;compute overhead
push eax ;save overhead on the stack
;Count the cycles of the test code
serialize
rdtsc
push eax ;save first count
serialize
include 'testcode.inc'
serialize
rdtsc
push eax ;save second count
serialize
pop eax ;retrieve second count
pop ecx ;retrieve the number of cycles at the begining of code
sub eax,ecx ;count it down
pop ecx ;retrieve the overhead
pop esi
mov [esi],eax
add esi,4
pop edi
mov [edi],ecx
add edi,4
pop ebx
sub ebx,1
jnz loopTests
mov esi,ticks
mov edi,overheads
invoke puts,table1
mov edx,[esi]
mov eax,[edi]
sub edx,eax
invoke printf,form1,[esi],[edi],edx
xor ecx,ecx
inc cl
@re:
add esi,4
add edi,4
push esi
push edi
mov edx,[esi]
mov eax,[edi]
sub edx,eax
inc cl
push ecx
cinvoke printf,form2,ecx,[esi],[edi],edx
pop ecx
pop edi
pop esi
mov eax,[esi]
cmp eax,[minTicks]
jnb @f
mov [minTicks],eax
@@:
mov eax,[edi]
cmp eax,[minOverhead]
jnb @f
mov [minOverhead],eax
@@:
cmp cl,nbTests
jnz @re
invoke puts,table2
mov eax,nbTests
test eax,eax
jz @f
mov edx,[minTicks]
mov eax,[minOverhead]
sub edx,eax
invoke printf,form3,[minTicks],[minOverhead],edx
@@:
xor ebx,ebx
mov eax,_exit
int 0x80
align 4
buffer1 rb _buffer1
align 4
buffer2 rb _buffer2
;-------------------------------------------------------------------------
segment readable writeable
;-------------------------------------------------------------------------
nbTests = 10
ticks rd nbTests
overheads rd nbTests
minTicks dd 0xFFFFFFFF
minOverhead dd 0xFFFFFFFF
i dd 0
table1 db ' _____________________________________________________',10,\
'| # | Cycles | Overhead | Without overhead |',10,\
'|------|------------|--------------|------------------|',0
table2 db '|______|____________|______________|__________________|',0
form1 db '| 1 |%11d |%13d |%17d | (discarded)',10,0
form2 db '|%5d |%11d |%13d |%17d |',10,0
form3 db 10,\
' Minimum ticks : %10d',10,\
' - Minimum overhead : %10d',10,\
' --------------------------------',10,\
' %10d',10,0
;------------------------------------------------------------------------- |
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