Bug in USES in x86/x64 code

[Yuri]

For some reason GoAsm ignores the USES directive in x86 mode if I put x64 register names in it.

"USES rbx,rdi,rsi" — works OK in x64 mode but is ingored in x86. The registers are not preserved.
"USES ebx,edi,esi" — seems to work in both.

Can anyone confirm this, or maybe I am doing something wrong and don't see that ...  ::)

[donkey]

You're not doing anything wrong Yuri, this is a bug in compatibility mode. For now this workaround works fine:

Code Select Expand

TestFrame FRAME param
#IFDEF X64
uses rbx,rdi,rsi
#ELSE
uses ebx,edi,esi
#ENDIF

ret
ENDF

[Yuri]

I guess we can just write "USES ebx,edi,esi". The GoAsm manual states that pushes are equivalent for both versions of a register. This is probably unlikely to change. But of course your solution is more precise.

[jorgon]

Hi Yuri

Thanks for the bug report.
Currently Wayne and Edgar are helping to maintain the "Go" source and to deal with bugs and enhancements.
Your bug has been identified, and a fix will be incorporated in GoAsm Version 0.57 which will be released very shortly.

[Yuri]

Great news, Jeremy. :thumbu Thank you, guys, for maintaining this excellent project.