- 27 4月, 2008 3 次提交
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由 Avi Kivity 提交于
This adds group decoding support for opcodes 0xf6, 0xf7 (group 3). Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
This adds group decode support for opcode 0x8f. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Certain x86 instructions use bits 3:5 of the byte following the opcode as an opcode extension, with the decode sometimes depending on bits 6:7 as well. Add support for this in the main decoding table rather than an ad-hock adaptation per opcode. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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- 31 1月, 2008 1 次提交
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由 Avi Kivity 提交于
This paves the way for multiple architecture support. Note that while ioapic.c could potentially be shared with ia64, it is also moved. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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- 30 1月, 2008 35 次提交
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由 Zhang Xiantao 提交于
Move all the architecture-specific fields in kvm_vcpu into a new struct kvm_vcpu_arch. Signed-off-by: NZhang Xiantao <xiantao.zhang@intel.com> Acked-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Stack instructions are always 64-bit on 64-bit mode; many of the emulated stack instructions did not take that into account. Fix by adding a 'Stack' bitflag and setting the operand size appropriately during the decode stage (except for 'push r/m', which is in a group with a few other instructions, so it gets its own treatment). This fixes random crashes on Vista x64. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
We prepare eflags for the emulated instruction, then clobber it with an 'andl'. Fix by popping eflags as the last thing in the sequence. Patch taken from Xen (16143:959b4b92b6bf) Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Unify the special instruction switch with the regular instruction switch, and the two byte special instruction switch with the regular two byte instruction switch. That makes it much easier to find an instruction or the place an instruction needs to be added in. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
The rep prefix cleanup left two switch () statements next to each other. Unify them. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Currently rep processing is handled somewhere in the middle of instruction processing. Move it to a sensible place. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Guillaume Thouvenin 提交于
Add emulation for the cmps instruction. This lets OpenBSD boot on kvm. Signed-off-by: NGuillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Sheng Yang 提交于
Previous patches have removed the dependency on cr2; we can now stop passing it to the emulator and rename uses to 'memop'. Signed-off-by: NSheng Yang <sheng.yang@intel.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Current implementation is to toggle, which is incorrect. Patch ported from corresponding Xen code. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Guillaume Thouvenin 提交于
cmps and scas instructions accept repeat prefixes F3 and F2. So in order to emulate those prefixed instructions we need to be able to know if prefixes are REP/REPE/REPZ or REPNE/REPNZ. Currently kvm doesn't make this distinction. This patch introduces this distinction. Signed-off-by: NGuillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Instead of fetching one byte at a time, prefetch 15 bytes (or until the next page boundary) to avoid guest page table walks. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Sheng Yang 提交于
The current 'lods' and 'stos' is depending on incoming CR2 rather than decode memory address from registers. Signed-off-by: NSheng Yang <sheng.yang@intel.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Izik Eidus 提交于
it is removed beacuse it isnt supported on a real host Signed-off-by: NIzik Eidus <izike@qumranet.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Now that rex_prefix is part of the decode cache, there is no need to pass it along. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Instructions like 'inc reg' that have the register operand encoded in the opcode are currently specially decoded. Extend decode_register_operand() to handle that case, indicated by having DstReg or SrcReg without ModRM. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Share the common parts of SrcReg and DstReg decoding. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
The 'mov abs' instruction family (opcodes 0xa0 - 0xa3) still depends on cr2 provided by the page fault handler. This is wrong for several reasons: - if an instruction accessed misaligned data that crosses a page boundary, and if the fault happened on the second page, cr2 will point at the second page, not the data itself. - if we're emulating in real mode, or due to a FlexPriority exit, there is no cr2 generated. So, this change adds decoding for this instruction form and drops reliance on cr2. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Zhang Xiantao 提交于
First step to split kvm_vcpu. Currently, we just use an macro to define the common fields in kvm_vcpu for all archs, and all archs need to define its own kvm_vcpu struct. Signed-off-by: NZhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Nitin A Kamble 提交于
Instruction: cmc, clc, cli, sti opcodes: 0xf5, 0xf8, 0xfa, 0xfb respectively. [avi: fix reference to EFLG_IF which is not defined anywhere] Signed-off-by: NNitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Nitin A Kamble 提交于
Instructions: inc r16/r32 (opcode 0x40-0x47) dec r16/r32 (opcode 0x48-0x4f) Signed-off-by: NNitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Mike Day 提交于
Signed-off-by: NMike D. Day <ncmike@ncultra.org> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
This patch modifies the management of REX prefix according behavior I saw in Xen 3.1. In Xen, this modification has been introduced by Jan Beulich. http://lists.xensource.com/archives/html/xen-changelog/2007-01/msg00081.htmlSigned-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Qing He 提交于
Signed-off-by: NQing He <qing.he@intel.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
Remove no_wb, use dst.type = OP_NONE instead, idea stollen from xen-3.1 Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
Remove _eflags and use directly ctxt->eflags. Caching eflags is not needed as it is restored to vcpu by kvm_main.c:emulate_instruction() from ctxt->eflags only if emulation doesn't fail. Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
To improve readability, move push, writeback, and grp 1a/2/3/4/5/9 emulation parts into functions. Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
Move emulate_ctxt to kvm_vcpu to keep emulate context when we exit from kvm module. Call x86_decode_insn() only when needed. Modify x86_emulate_insn() to not modify the context if it must be re-entered. Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
emulate_instruction() calls now x86_decode_insn() and x86_emulate_insn(). x86_emulate_insn() is x86_emulate_memop() without the decoding part. Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
Split the decoding process into a new function x86_decode_insn(). Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
Move all x86_emulate_memop() common variables between decode and execute to a structure decode_cache. This will help in later separating decode and emulate. struct decode_cache { u8 twobyte; u8 b; u8 lock_prefix; u8 rep_prefix; u8 op_bytes; u8 ad_bytes; struct operand src; struct operand dst; unsigned long *override_base; unsigned int d; unsigned long regs[NR_VCPU_REGS]; unsigned long eip; /* modrm */ u8 modrm; u8 modrm_mod; u8 modrm_reg; u8 modrm_rm; u8 use_modrm_ea; unsigned long modrm_ea; unsigned long modrm_val; }; Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Laurent Vivier 提交于
Remove #ifdef functions never used Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Anthony Liguori 提交于
This patch refactors the current hypercall infrastructure to better support live migration and SMP. It eliminates the hypercall page by trapping the UD exception that would occur if you used the wrong hypercall instruction for the underlying architecture and replacing it with the right one lazily. A fall-out of this patch is that the unhandled hypercalls no longer trap to userspace. There is very little reason though to use a hypercall to communicate with userspace as PIO or MMIO can be used. There is no code in tree that uses userspace hypercalls. [avi: fix #ud injection on vmx] Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Anthony Liguori 提交于
Add vmmcall/vmcall to x86_emulate. Future patch will implement functionality for these instructions. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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- 27 11月, 2007 1 次提交
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由 Amit Shah 提交于
emulator_write_std() is not implemented, and calling write_emulated should work just as well in place of write_std. Fixes emulator failures with the push r/m instruction. Signed-off-by: NAmit Shah <amit.shah@qumranet.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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