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[SOLVED]Built-in assembler
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Topic: [SOLVED]Built-in assembler (Read 998 times)
avk
Hero Member
Posts: 752
[SOLVED]Built-in assembler
«
on:
November 07, 2019, 08:04:21 am »
It looks like a bug, attempt to compile this code:
Code: Pascal
[Select]
[+]
[-]
{$asmmode intel}
procedure
doasm
;
begin
asm
test rax
,
$8000000000000000
end
;
end
;
reports an error:
Code: Text
[Select]
[+]
[-]
... Error: Asm: signed dword value exceeds bounds -9223372036854775808
«
Last Edit: November 07, 2019, 09:08:01 am by avk
»
Logged
zamronypj
Full Member
Posts: 133
Re: Built-in assembler
«
Reply #1 on:
November 07, 2019, 08:33:39 am »
According to TEST instruction documentation
https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
TEST RAX, imm32
So it accepts immediate value 32 bit operand. To test with 64 bit immediate value, CMIIW, I think you need to copy 64bit immediate value to 64bit register first
Code: ASM
[Select]
[+]
[-]
mov
rcx
,
$
8000000000000000
test
rax
,
rcx
«
Last Edit: November 07, 2019, 08:37:30 am by zamronypj
»
Logged
Fano Framework, Free Pascal web application framework
https://fanoframework.github.io
Apache module executes Pascal program like scripting language
https://zamronypj.github.io/mod_pascal/
Github
https://github.com/zamronypj
avk
Hero Member
Posts: 752
Re: Built-in assembler
«
Reply #2 on:
November 07, 2019, 08:49:27 am »
Thank you very much.
Logged
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[SOLVED]Built-in assembler
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