A few errors to deal with
in [ASM]
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From: Branimir Maksimovic on 27 May 2010 21:18 On Thu, 27 May 2010 14:11:25 -0400 Frank Kotler <fbkotler(a)myfairpoint.net> wrote: > fasm version ;) (converted to hex) bmaxa(a)maxa:~/fasm/strange$ bmaxa(a)maxa:~/fasm/strange$ fasm test.asm flat assembler version 1.68 (16384 kilobytes memory) 2 passes, 232 bytes. bmaxa(a)maxa:~/fasm/strange$ ./test A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A bmaxa(a)maxa:~/fasm/strange$ cat test.asm format ELF executable segment writeable executable entry $ mov ecx,16 l1: push ecx cpuid rdtsc push edx push eax cpuid rdtsc pop ebx sub eax, ebx pop ecx sub edx, ecx mov edi, ascbuf call u64toda mov ecx, ascbuf mov edx, 33 mov ebx, 1 mov eax, 4 int 80h pop ecx loop l1 exit: mov eax, 1 mov ebx,0 int 80h xtbl db 30h,31h,32h,33h,34h,35h,36h,37h,38h,39h,41h,42h, \ 43h,44h,45h,46h u64toda: mov ebx,xtbl mov cl,16 l2: mov ch,al and al,0xf xlatb stosb mov al,ch shrd edx,eax,4 dec cl jz e1 mov byte[edi], ',' inc edi jmp l2 e1: ret ascbuf db 32 dup (?),0xa bmaxa(a)maxa:~/fasm/strange$ Greets! -- http://maxa.homedns.org/ Sometimes online sometimes not Svima je "dozvoljeno" biti idiot i > mrak, ali samo neki to odaberu,
From: Frank Kotler on 27 May 2010 22:50 Branimir Maksimovic wrote: > On Thu, 27 May 2010 14:11:25 -0400 > Frank Kotler <fbkotler(a)myfairpoint.net> wrote: > > fasm version ;) (converted to hex) Okay... > bmaxa(a)maxa:~/fasm/strange$ > bmaxa(a)maxa:~/fasm/strange$ fasm test.asm > flat assembler version 1.68 (16384 kilobytes memory) > 2 passes, 232 bytes. > bmaxa(a)maxa:~/fasm/strange$ ./test > A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 > A,A,A,A,A,A,A,A,A,A,A,A,A,A,A,A Groovy! What does it represent? Best, Frank
From: Nathan on 28 May 2010 00:55 On May 27, 9:18 pm, Branimir Maksimovic <bm...(a)hotmail.com> wrote: > > format ELF executable > > segment writeable executable > > entry $ > mov ecx,16 > l1: > push ecx > cpuid > rdtsc > push edx > push eax > > cpuid > rdtsc > > pop ebx > sub eax, ebx > pop ecx > sub edx, ecx > mov edi, ascbuf add edi, 15 > call u64toda > > mov ecx, ascbuf > mov edx, 33 > mov ebx, 1 > mov eax, 4 > int 80h > pop ecx > loop l1 > > exit: > mov eax, 1 > mov ebx,0 > int 80h > > xtbl db 30h,31h,32h,33h,34h,35h,36h,37h,38h,39h,41h,42h, \ > 43h,44h,45h,46h > > u64toda: > mov ebx,xtbl > mov cl,16 std > l2: > mov ch,al > and al,0xf > xlatb > stosb > mov al,ch > ;;;;shrd edx,eax,4 shrd eax, edx, 4 > dec cl > jz e1 > ;;;;mov byte[edi], ',' > ;;;;inc edi > jmp l2 > ;;;;e1: ret e1: cld ret > > ;;;;ascbuf db 32 dup (?),0xa > ascbuf db 15 dup (?), 0xa
From: Frank Kotler on 28 May 2010 03:10 Nathan wrote: .... > ;;;;shrd edx,eax,4 > > shrd eax, edx, 4 Ah. shr edx, 4 "shrd" does not update its second operand (that wasn't what *I* thought it did, either!). A 64-bit routine is overkill - edx is zero, in any sane case - but if we say we're gonna do it, might as well do it. :) There, now I can time "das", and... it's all over the place! Thanks, guys! Best, Frank
From: Branimir Maksimovic on 28 May 2010 03:58
On Thu, 27 May 2010 21:55:28 -0700 (PDT) Nathan <nathancbaker(a)gmail.com> wrote: > On May 27, 9:18 pm, Branimir Maksimovic <bm...(a)hotmail.com> wrote: > > > > format ELF executable > > > > segment writeable executable > > > > entry $ > > mov ecx,16 > > l1: > > push ecx > > cpuid > > rdtsc > > push edx > > push eax > > > > cpuid > > rdtsc > > > > pop ebx > > sub eax, ebx > > pop ecx > > sub edx, ecx > > mov edi, ascbuf > > add edi, 15 > > > call u64toda > > > > mov ecx, ascbuf > > mov edx, 33 > > mov ebx, 1 > > mov eax, 4 > > int 80h > > pop ecx > > loop l1 > > > > exit: > > mov eax, 1 > > mov ebx,0 > > int 80h > > > > xtbl db 30h,31h,32h,33h,34h,35h,36h,37h,38h,39h,41h,42h, \ > > 43h,44h,45h,46h > > > > u64toda: > > mov ebx,xtbl > > mov cl,16 > > std > > > l2: > > mov ch,al > > and al,0xf > > xlatb > > stosb > > mov al,ch > > ;;;;shrd edx,eax,4 > > shrd eax, edx, 4 > > > dec cl > > jz e1 > > ;;;;mov byte[edi], ',' > > ;;;;inc edi > > jmp l2 > > ;;;;e1: ret > > e1: > cld > ret > > > > > ;;;;ascbuf db 32 dup (?),0xa > > > > ascbuf db 15 dup (?), 0xa > bmaxa(a)maxa:~/fasm/strange$ fasm test.asm flat assembler version 1.68 (16384 kilobytes memory) 2 passes, 216 bytes. bmaxa(a)maxa:~/fasm/strange$ ./test 0000000000000195 0000000000000195 000000000000019E 000000000000019E 000000000000019E 000000000000019E 000000000000019E 000000000000019E 000000000000019E 0000000000000195 0000000000000195 000000000000019E 000000000000019E 000000000000019E 000000000000019E 000000000000019E bmaxa(a)maxa:~/fasm/strange$ cat test.asm format ELF executable segment writeable executable entry $ mov ecx,16 l1: push ecx cpuid rdtsc push edx push eax cpuid rdtsc pop ebx sub eax, ebx pop ecx sub edx, ecx lea edi, [ascbuf+15] call u64toda mov ecx, ascbuf mov edx, 17 mov ebx, 1 mov eax, 4 int 80h pop ecx loop l1 exit: mov eax, 1 mov ebx,0 int 80h xtbl db 30h,31h,32h,33h,34h,35h,36h,37h,38h,39h,41h,42h, \ 43h,44h,45h,46h u64toda: mov ebx,xtbl std mov cl,16 l2: mov ch,al and al,0xf xlatb stosb mov al,ch shrd eax,edx,4 shr edx,4 ; forgot dec cl jnz l2 cld ret ascbuf db 16 dup (?),0xa bmaxa(a)maxa:~/fasm/strange$ It goes in reverse order? Greets! -- http://maxa.homedns.org/ Sometimes online sometimes not Svima je "dozvoljeno" biti idiot i > mrak, ali samo neki to odaberu, |