From: Richard Henderson <rth@twiddle.net>
To: Michael Walle <michael@walle.cc>
Cc: "Peter Maydell" <peter.maydell@linaro.org>,
"Peter Crosthwaite" <peter.crosthwaite@xilinx.com>,
"Eduardo Habkost" <ehabkost@redhat.com>,
"Riku Voipio" <riku.voipio@iki.fi>,
"QEMU Developers" <qemu-devel@nongnu.org>,
"Alexander Graf" <agraf@suse.de>,
"Blue Swirl" <blauwirbel@gmail.com>,
"Li Guang" <lig.fnst@cn.fujitsu.com>,
"Anthony Liguori" <anthony@codemonkey.ws>,
"Igor Mammedov" <imammedo@redhat.com>,
"Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
"Andreas Färber" <afaerber@suse.de>,
"Aurélien Jarno" <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [RFC qom-cpu 00/41] QOM CPUState, part 13: Emptying CPU_COMMON
Date: Tue, 17 Sep 2013 11:46:02 -0700 [thread overview]
Message-ID: <5238A36A.50500@twiddle.net> (raw)
In-Reply-To: <201309171946.43311.michael@walle.cc>
On 09/17/2013 10:46 AM, Michael Walle wrote:
> Am Montag, 9. September 2013, 18:47:21 schrieb Peter Maydell:
>> For lm32 you might consider raising EXCP_BREAKPOINT;
>> then if you have a gdb connected to the debug stub
>> the developer will get dropped into the debugger for
>> the offending insn and can look at it.
>
> Are you sure, this will drop to the debugger? I guess the target cpu jumps to
> the exception vector.
He meant EXCP_DEBUG, I think.
It will never affect the target cpu at all, of course, that would be useless
for debugging. Issuing it will exit the cpu loop.
If the debugger is attached, all of the expected things should happen.
Otherwise, it appears as if we'll still have set cpu->stopped, and
we'll fail to run anymore instructions. Even without the debugger
you ought to be able to poke around with the monitor to see what's
going on.
r~
next prev parent reply other threads:[~2013-09-17 18:46 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-04 9:04 [Qemu-devel] [RFC qom-cpu 00/41] QOM CPUState, part 13: Emptying CPU_COMMON Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 01/41] cpu: Turn cpu_has_work() into a CPUClass hook Andreas Färber
2013-09-04 12:41 ` Jia Liu
2014-02-05 18:51 ` Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 02/41] cpu: Turn cpu_mmu_index() " Andreas Färber
2013-09-04 12:42 ` Jia Liu
2013-09-04 12:55 ` Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 03/41] cpu: Turn cpu_get_tb_cpu_state() " Andreas Färber
2013-09-04 10:26 ` Paolo Bonzini
2013-09-04 11:02 ` Andreas Färber
2013-09-04 11:20 ` Paolo Bonzini
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 04/41] cpu: Turn cpu_handle_mmu_fault() " Andreas Färber
2013-09-04 12:46 ` Jia Liu
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 05/41] cpu: Move mem_io_{pc, vaddr} fields from CPU_COMMON to CPUState Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 06/41] cpu: Move can_do_io field " Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 07/41] cpu: Move icount_extra " Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 08/41] cpu: Move icount_decr " Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 09/41] cpu: Move tb_jmp_cache " Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 10/41] cpu: Move jmp_env " Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 11/41] cpu: Move exception_index " Andreas Färber
2013-09-04 12:47 ` Jia Liu
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 12/41] cpu: Move cpu_copy() into linux-user Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 13/41] cpu: Drop cpu_model_str from CPU_COMMON Andreas Färber
2013-09-04 12:47 ` Jia Liu
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 14/41] cpu: Move opaque field from CPU_COMMON to CPUState Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 15/41] cpu: Move watchpoint fields " Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 16/41] cpu: Move breakpoints field " Andreas Färber
2013-09-04 12:48 ` Jia Liu
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 17/41] cpu: Move tlb_flush_{addr, mask} fields from CPU_COMMON_TLB " Andreas Färber
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 18/41] exec: Change tlb_fill() argument " Andreas Färber
2013-09-04 12:49 ` Jia Liu
2013-09-04 9:04 ` [Qemu-devel] [RFC qom-cpu 19/41] cpu-exec: Change cpu_loop_exit() " Andreas Färber
2013-09-04 12:49 ` Jia Liu
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 20/41] translate-all: Change cpu_restore_state() " Andreas Färber
2013-09-04 12:49 ` Jia Liu
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 21/41] translate-all: Change cpu_restore_state_from_tb() " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 22/41] translate-all: Change tb_check_watchpoint() " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 23/41] translate-all: Change cpu_io_recompile() " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 24/41] translate-all: Change tb_gen_code() " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 25/41] translate-all: Change tb_flush_jmp_cache() " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 26/41] target-ppc: Use PowerPCCPU in PowerPCCPUClass::handle_mmu_fault hook Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 27/41] exec: Change cpu_watchpoint_{insert, remove{, _by_ref, _all}} argument Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 28/41] exec: Change cpu_breakpoint_{insert, " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 29/41] cpu-exec: Change cpu_resume_from_signal() argument to CPUState Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 30/41] cputlb: Change tlb_update_dirty() " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 31/41] exec: Change memory_region_section_get_iotlb() " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 32/41] cputlb: Change tlb_set_page() " Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 33/41] " Andreas Färber
2013-09-04 12:51 ` Jia Liu
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 34/41] exec: Change cpu_abort() " Andreas Färber
2013-09-04 12:49 ` Jia Liu
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 35/41] target-cris: Replace DisasContext::env field with CRISCPU Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 36/41] target-lm32: Replace DisasContext::env field with LM32CPU Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 37/41] target-microblaze: Replace DisasContext::env field with MicroBlazeCPU Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 38/41] target-lm32: Move features field from CPULM32State to LM32CPU Andreas Färber
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 39/41] cputlb: Change tlb_flush_page() argument to CPUState Andreas Färber
2013-09-04 12:50 ` Jia Liu
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 40/41] cputlb: Change tlb_flush() " Andreas Färber
2013-09-04 12:50 ` Jia Liu
2013-09-04 9:05 ` [Qemu-devel] [RFC qom-cpu 41/41] user-exec: Change exception_action() " Andreas Färber
2013-09-09 16:39 ` [Qemu-devel] [RFC qom-cpu 00/41] QOM CPUState, part 13: Emptying CPU_COMMON Michael Walle
2013-09-09 16:47 ` Peter Maydell
2013-09-17 17:46 ` Michael Walle
2013-09-17 18:46 ` Richard Henderson [this message]
2013-09-17 21:26 ` Peter Maydell
2013-09-20 17:07 ` [Qemu-devel] Stopping the VM due to an illegal instruction [was: QOM CPUState, part 13: Emptying CPU_COMMON] Michael Walle
2013-09-17 17:32 ` [Qemu-devel] [RFC qom-cpu 00/41] QOM CPUState, part 13: Emptying CPU_COMMON Michael Walle
2014-02-07 17:43 ` Michael Walle
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