- 13 5月, 2014 1 次提交
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由 Paolo Bonzini 提交于
On the x86, some devices need access to the CPU reset pin (INIT#). Provide a generic service to do this, using one of the internal cpu_interrupt targets. Generalize the PPC-specific code for CPU_INTERRUPT_RESET to other targets. Since PPC does not support migration across QEMU versions (its machine types are not versioned yet), I picked the value that is used on x86, CPU_INTERRUPT_TGT_INT_1. Consequently, TGT_INT_2 and TGT_INT_3 are shifted down by one while keeping their value. Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 05 4月, 2014 1 次提交
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由 Peter Maydell 提交于
If the guest attempts to execute from unreadable memory, this will cause us to longjmp back to the main loop from inside the target frontend decoder. For linux-user mode, this means we will still hold the tb_ctx.tb_lock, and will deadlock when we try to start executing code again. Unlock the lock in the return-from-longjmp code path to avoid this. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Acked-by: NAndrei Warkentin <andrey.warkentin@gmail.com> Reviewed-by: NRichard Henderson <rth@twiddle.net>
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- 14 3月, 2014 10 次提交
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由 Andreas Färber 提交于
Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Clear it on reset. Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Reset it. Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Default to false. Tidy variable naming and inline cast uses while at it. Tested-by: Jia Liu <proljc@gmail.com> (or32) Signed-off-by: NAndreas Färber <afaerber@suse.de>
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- 27 2月, 2014 1 次提交
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由 Peter Maydell 提交于
To avoid complication in code that otherwise would not need to care about whether EL1 is AArch32 or AArch64, we should store the interrupt mask bits (CPSR.AIF in AArch32 and PSTATE.DAIF in AArch64) in one place consistently regardless of EL1's mode. Since AArch64 has an extra enable bit (D for debug exceptions) which isn't visible in AArch32, this means we need to keep the enables in env->pstate. (This is also consistent with the general approach we're taking that we handle 32 bit CPUs as being like AArch64/ARMv8 CPUs but which only run in 32 bit mode.) Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Reviewed-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
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- 11 2月, 2014 1 次提交
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由 Edgar E. Iglesias 提交于
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>
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- 08 1月, 2014 1 次提交
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由 Richard Henderson 提交于
The previous placement could result in duplicate logging while still processing interrupts. Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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- 24 12月, 2013 1 次提交
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由 Andreas Färber 提交于
Replace growing numbers of inline x86_env_get_cpu() with x86_cpu variable. Reviewed-by: NChen Fan <chen.fan@cn.fujitsu.com> Signed-off-by: NAndreas Färber <afaerber@suse.de>
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- 23 12月, 2013 1 次提交
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由 Chen Fan 提交于
This motion is preparing for refactoring vCPU APIC subsequently. Signed-off-by: NChen Fan <chen.fan.fnst@cn.fujitsu.com> Signed-off-by: NAndreas Färber <afaerber@suse.de>
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- 07 10月, 2013 1 次提交
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由 Juergen Lock 提交于
Local variable CPUClass *cc needs to be reloaded after return from longjmp, too. (This fixes a mips-softmmu crash observed on FreeBSD when QEMU is built with clang.) Reported-by: NDimitry Andric <dim@FreeBSD.org> Signed-off-by: NJuergen Lock <nox@jelal.kn-bremen.de> Signed-off-by: NAndreas Färber <afaerber@suse.de>
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- 03 9月, 2013 2 次提交
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由 Richard Henderson 提交于
Reviewed-by: NAurelien Jarno <aurelien@aurel32.net> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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由 Richard Henderson 提交于
Reviewed-by: NAurelien Jarno <aurelien@aurel32.net> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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- 23 7月, 2013 2 次提交
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由 Andreas Färber 提交于
Prepares for changing cpu_single_step() argument to CPUState. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Where no extra implementation is needed, fall back to CPUClass::set_pc(). Acked-by: Michael Walle <michael@walle.cc> (for lm32) Signed-off-by: NAndreas Färber <afaerber@suse.de>
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- 10 7月, 2013 3 次提交
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由 Andreas Färber 提交于
Since commit 878096ee (cpu: Turn cpu_dump_{state,statistics}() into CPUState hooks) CPUArchState is no longer needed. Add documentation and make the functions available through qemu/log.h outside NEED_CPU_H to allow use in qom/cpu.c. Moving them to qom/cpu.h was not yet possible due to convoluted include paths, so that some devices grow an implicit and unneeded dependency on qom/cpu.h for now. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Reviewed-by: NRichard Henderson <rth@twiddle.net> [AF: Simplified mb_cpu_do_interrupt() and do_interrupt_all() changes] Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Prepares for log_cpu_state_mask() changing argument to CPUState. Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Move it to qom/cpu.h. Signed-off-by: NAndreas Färber <afaerber@suse.de>
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- 16 6月, 2013 1 次提交
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由 liguang 提交于
Signed-off-by: Nliguang <lig.fnst@cn.fujitsu.com> Reviewed-by: NAndreas Färber <afaerber@suse.de> Reviewed-by: NRichard Henderson <rth@twiddle.net> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 13 4月, 2013 1 次提交
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由 Olivier Hainque 提交于
The IO thread, when it senses cpu_single_env == 0, expects exit_request to be checked later on. A compiler scheduling constraint is not strong enough to ensure this on modern architecture. A memory fence is needed as well. Signed-off-by: NOlivier Hainque <hainque@adacore.com> Signed-off-by: NFabien Chouteau <chouteau@adacore.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NStefan Weil <sw@weilnetz.de>
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- 12 4月, 2013 1 次提交
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由 Peter Maydell 提交于
The CONFIG_DEBUG_EXEC define compiles out a single qemu_log_mask() call, which is a pretty trivial cost even for something in the main cpu_exec() loop. Having this be conditionally defined means that '-d exec' on a non-debug build will silently do nothing. Drop the define and the configure machinery that sets it, in favour of just always allowing this log option to be enabled at runtime. As a concession to the mainloopiness, we use qemu_loglevel_mask()+qemu_log() rather than qemu_log_mask() to avoid the function call overhead. Note that DEBUG_DISAS is always defined, so removing the '|| defined(CONFIG_DEBUG_EXEC)' from those conditionals makes no behavioural change for that logging. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Acked-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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- 23 3月, 2013 2 次提交
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由 Richard Henderson 提交于
We can compute the value in cpu_dump_state anyway, and gratuitous modifications to eflags creates heisenbugs. Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: NRichard Henderson <rth@twiddle.net> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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由 Anthony Green 提交于
Signed-off-by: NAnthony Green <green@moxielogic.com> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 12 3月, 2013 2 次提交
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由 Andreas Färber 提交于
This removes a global per-target function and thus takes us one step closer to compiling multiple targets into one executable. It will also allow to override the interrupt handling for certain CPU families. Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Both fields are used in VMState, thus need to be moved together. Explicitly zero them on reset since they were located before breakpoints. Pass PowerPCCPU to kvmppc_handle_halt(). Signed-off-by: NAndreas Färber <afaerber@suse.de>
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- 03 3月, 2013 3 次提交
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由 Peter Maydell 提交于
Fix some of the nasty TCG race conditions and crashes by implementing cpu_exit() as setting a flag which is checked at the start of each TB. This avoids crashes if a thread or signal handler calls cpu_exit() while the execution thread is itself modifying the TB graph (which may happen in system emulation mode as well as in linux-user mode with a multithreaded guest binary). This fixes the crashes seen in LP:668799; however there are another class of crashes described in LP:1098729 which stem from the fact that in linux-user with a multithreaded guest all threads will use and modify the same global TCG date structures (including the generated code buffer) without any kind of locking. This means that multithreaded guest binaries are still in the "unsupported" category. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Reviewed-by: NRichard Henderson <rth@twiddle.net> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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由 Peter Maydell 提交于
If tcg_qemu_tb_exec() returns a value whose low bits don't indicate a link to an indexed next TB, this means that the TB execution never started (eg because the instruction counter hit zero). In this case the guest PC has to be reset to the address of the start of the TB. Refactor the cpu-exec code to make all tcg_qemu_tb_exec() calls pass through a wrapper function which does this restoration if necessary. Note that the apparent change in cpu_exec_nocache() from calling cpu_pc_from_tb() with the old TB to calling it with the TB returned by do_tcg_qemu_tb_exec() is safe, because in the nocache case we can guarantee that the TB we try to execute is not linked to any others, so the only possible returned TB is the one we started at. That is, we should arguably previously have included in cpu_exec_nocache() an assert(next_tb & ~TB_EXIT_MASK) == tb), since the API requires restore from next_tb but we were using tb. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Reviewed-by: NRichard Henderson <rth@twiddle.net> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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由 Peter Maydell 提交于
Document tcg_qemu_tb_exec(). In particular, its return value is a combination of a pointer to the next translation block and some extra information in the low two bits. Provide some #defines for the values passed in these bits to improve code clarity. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Reviewed-by: NRichard Henderson <rth@twiddle.net> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 24 2月, 2013 1 次提交
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由 Peter Maydell 提交于
The setjmp() function doesn't specify whether signal masks are saved and restored; on Linux they are not, but on BSD (including MacOSX) they are. We want to have consistent behaviour across platforms, so we should always use "don't save/restore signal mask" (this is also generally going to be faster). This also works around a bug in MacOSX where the signal-restoration on longjmp() affects the signal mask for a completely different thread, not just the mask for the thread which did the longjmp. The most visible effect of this was that ctrl-C was ignored on MacOSX because the CPU thread did a longjmp which resulted in its signal mask being applied to every thread, so that all threads had SIGINT and SIGTERM blocked. The POSIX-sanctioned portable way to do a jump without affecting signal masks is to siglongjmp() to a sigjmp_buf which was created by calling sigsetjmp() with a zero savemask parameter, so change all uses of setjmp()/longjmp() accordingly. [Technically POSIX allows sigsetjmp(buf, 0) to save the signal mask; however the following siglongjmp() must not restore the signal mask, so the pair can be effectively considered as "sigjmp/longjmp which don't touch the mask".] For Windows we provide a trivial sigsetjmp/siglongjmp in terms of setjmp/longjmp -- this is OK because no user will ever pass a non-zero savemask. The setjmp() uses in tests/tcg/test-i386.c and tests/tcg/linux-test.c are left untouched because these are self-contained singlethreaded test programs intended to be run under QEMU's Linux emulation, so they have neither the portability nor the multithreading issues to deal with. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Reviewed-by: NRichard Henderson <rth@twiddle.net> Tested-by: NStefan Weil <sw@weilnetz.de> Reviewed-by: NLaszlo Ersek <lersek@redhat.com> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 16 2月, 2013 3 次提交
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由 Andreas Färber 提交于
Explictly NULL it on CPU reset since it was located before breakpoints. Change vapic_report_tpr_access() argument to CPUState. This also resolves the use of void* for cpu.h independence. Change vAPIC patch_instruction() argument to X86CPU. Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Andreas Färber 提交于
Since it was located before breakpoints field, it needs to be reset. Signed-off-by: NAndreas Färber <afaerber@suse.de>
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由 Evgeny Voevodin 提交于
It's worth to clean-up translation blocks variables and move them into one context as was suggested by Swirl. Also if we use this context directly inside tcg_ctx, then it speeds up code generation a bit. Signed-off-by: NEvgeny Voevodin <evgenyvoevodin@gmail.com> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 19 12月, 2012 1 次提交
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由 Paolo Bonzini 提交于
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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