On Thu, May 09, 2024 at 05:25:26PM +0200, Paolo Bonzini wrote:
> Date: Thu, 9 May 2024 17:25:26 +0200
> From: Paolo Bonzini
> Subject: [PATCH] target/i386: fix operand size for DATA16 REX.W POPCNT
> X-Mailer: git-send-email 2.45.0
>
> According to the manual, 32-bit vs
On 5/9/24 17:25, Paolo Bonzini wrote:
According to the manual, 32-bit vs 64-bit is governed by REX.W
and REX ignores the 0x66 prefix. This can be confirmed with this
program:
#include
int main()
{
int x = 0x1234;
int y;
asm("popcntl %1, %0" : "=r"
According to the manual, 32-bit vs 64-bit is governed by REX.W
and REX ignores the 0x66 prefix. This can be confirmed with this
program:
#include
int main()
{
int x = 0x1234;
int y;
asm("popcntl %1, %0" : "=r" (y) : "r" (x)); printf("%x\n", y);
