On 6/4/24 09:10, Paolo Bonzini wrote:
On Tue, Jun 4, 2024 at 3:49 PM Richard Henderson
wrote:
Oh, based on the next patch, it would appear that PAUSE does not single-step
properly
because it sets EXCP_INTERRUPT, and end-of-insn single-step depends on
exception_index ==
-1. I'm thinking of
On Tue, Jun 4, 2024 at 3:49 PM Richard Henderson
wrote:
> Oh, based on the next patch, it would appear that PAUSE does not single-step
> properly
> because it sets EXCP_INTERRUPT, and end-of-insn single-step depends on
> exception_index ==
> -1. I'm thinking of the bottom of cpu_tb_exec().
On 6/4/24 08:44, Richard Henderson wrote:
On 6/4/24 02:18, Paolo Bonzini wrote:
PAUSE uses DISAS_NORETURN because the corresponding helper
calls cpu_loop_exit(). However, while HLT clear HF_INHIBIT_IRQ_MASK
to correctly handle "STI; HLT", the same is missing from PAUSE.
And also gen_eob()
On 6/4/24 02:18, Paolo Bonzini wrote:
PAUSE uses DISAS_NORETURN because the corresponding helper
calls cpu_loop_exit(). However, while HLT clear HF_INHIBIT_IRQ_MASK
to correctly handle "STI; HLT", the same is missing from PAUSE.
And also gen_eob() clears HF_RF_MASK and synthesizes a #DB
PAUSE uses DISAS_NORETURN because the corresponding helper
calls cpu_loop_exit(). However, while HLT clear HF_INHIBIT_IRQ_MASK
to correctly handle "STI; HLT", the same is missing from PAUSE.
And also gen_eob() clears HF_RF_MASK and synthesizes a #DB exception
if single-step is active; none of
