Marco van de Voort via fpc-pascal wrote:
Op 23-2-2026 om 16:35 schreef Adriaan van Os via fpc-pascal:
The following error message seeems to be new for fpc-3.3.1 (using
-RIntel)
....
@Remainder_1:
MOV Length,EBX
AND Length,1
JZ @TheEnd
MOVSS xmm2,[SourceBuffer] <--- Asm: [movss xmmreg2,mem64] invalid
combination of opcode and operands
MINSS xmm0,xmm2
MAXSS xmm1,xmm2
Has anything changed here ?
Disclaimer: I don't known 100% how OS X handles the analogue, so
assuming windows for a moment.
This is on macOS indeed, originally for Windows only, later ported to macOS. Strangely, the code
still has MS_ABI_Default in the code. I were told, this was needed for 32-bit x86.
Was this code meant for 64-bit or 32-bit, and are you running it on the
same architecture where you originally tested/used it?
This because the sourcebuffer seems to indicate [mem64], which sounds
like target 64-bit intel, which might expect a rip relative addressing like
MOVSS xmm2,[rip+SourceBuffer]
But if the code was originally 32-bit the original expression would have
been valid.
The code was originally for 32-bit x86, yes but 32-bit is no longer built now.
An older FPC compiler accepts the assembly (but I am not trying to say that the
asm is correct ...)
Regards,
Adriaan van Os
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