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329 Commits

Author SHA1 Message Date
Stanislav Shwartsman
12ece81e19 look only on valid tlb entries in check_addr_in_tlb_buffers and tlb invalidation methods 2016-05-06 06:57:00 +00:00
Stanislav Shwartsman
bcb36e81fa experimental implementation of protection keys paging extension published in SDM rev054. to enable configure with --enable-protection-keys 2016-03-02 20:44:42 +00:00
Stanislav Shwartsman
cd2129ec3b avoid calling prefetch() each time when linking traces cross page 2015-10-09 05:33:44 +00:00
Stanislav Shwartsman
8d13b61319 implemented TSC Scaling VMX feature according to timestamp-counter for virtualization whitepaper published by Intel 2015-09-30 18:44:01 +00:00
Stanislav Shwartsman
ad52e15860 added few tlb specific cpustat counters 2015-09-28 19:09:32 +00:00
Stanislav Shwartsman
8232928096 small code optimization and simplification 2015-09-23 19:25:07 +00:00
Stanislav Shwartsman
c44cb6ed81 more cases applicable for BX_TLB_ENTRY_OF 2015-09-22 20:10:22 +00:00
Stanislav Shwartsman
be4b73c6d2 extracted tlb specific code to tlb.h; extracted xsave cpuid leaf function to base cpuid class 2015-09-21 13:16:17 +00:00
Stanislav Shwartsman
b468316250 re-style old resolve macros after resolve function inlining 2015-05-16 21:06:59 +00:00
Stanislav Shwartsman
9f18573740 Rename BX_CPU_CALL_METHODR to BX_CPU_RESOLVE_ADDR and introduce special cases BX_CPU_RESOLVE_ADDR_64 (for 64-bit mode only) and BX_CPU_RESOLVE_ADDR_32 (for 32-bit mode only) 2015-05-11 19:23:09 +00:00
Stanislav Shwartsman
0d79c5f986 Implemented Page Modification Logging VMX feature 2015-05-06 19:55:44 +00:00
Stanislav Shwartsman
9be2f07d54 fix compilation err when SVM is enabled 2015-04-21 08:20:28 +00:00
Stanislav Shwartsman
c360ddf60c correctly report memory type for EPT page table accesses 
TODO: support memory type for guest physical access under EPT
TODO: support memory type for SVM nested paging 
TODO: check what happens when PAT is not enabled in CPU configuration
 2015-03-23 20:27:36 +00:00
Stanislav Shwartsman
05635a9534 call correctly resolve_memtype function 2015-03-21 20:28:22 +00:00
Stanislav Shwartsman
56323b2806 bugfixes 2015-03-21 20:15:57 +00:00
Stanislav Shwartsman
a55c5e4eb8 correctly report memory type for page table accesses in x86 mode (not in EPT or SVM nested paging yet) 
TODO: support memory type with EPT / nested paging
TODO: check what happens when PAT is not enabled in CPU configuration
 2015-03-21 20:08:58 +00:00
Stanislav Shwartsman
e79185b0a0 refactor memtype methods 2015-03-02 20:51:59 +00:00
Stanislav Shwartsman
36f7bf0ba6 fixed ept memtype printout 2015-03-01 21:04:34 +00:00
Stanislav Shwartsman
8134dc67af supporting memory type provided by page tables with PCD,PWT and PAT bits 
TODO: support memory type with EPT
TODO: support memory type for intermediate page table accesses
TODO: check what happens when PAT is not enabled in CPU configuration
 2015-03-01 20:55:23 +00:00
Stanislav Shwartsman
53041981f7 supply PAT required memory type bits through new combined access interface 2015-02-28 14:06:04 +00:00
Stanislav Shwartsman
25b02dac4b code reorg before PAT memory type support 2015-02-28 14:01:11 +00:00
Stanislav Shwartsman
1e1c893041 introduce new 64bit packed register type and implement pat/mtrr and mmx registers through it 2015-02-23 21:17:33 +00:00
Stanislav Shwartsman
2bad0d0d12 fixed link error with debugger enabled, small speed optimization 2015-02-23 19:55:55 +00:00
Stanislav Shwartsman
0917d12e8b memory type report for physical accesses and RMW acccesses. todo: consider also pat 2015-02-22 21:26:26 +00:00
Stanislav Shwartsman
7a3e340e6d implement memory type calculation by mtrr. todo: memory type from page tables 2015-02-20 21:50:59 +00:00
Stanislav Shwartsman
e16c6eb30c preparations and interface definition for memory type support 2015-02-19 20:23:08 +00:00
Volker Ruppert
2ec57b8a6b Fixed some more C++11 warnings. 2014-12-18 17:52:40 +00:00
Stanislav Shwartsman
8d1e3b2ac1 Added statistics collection infrastructure in Bochs and 
implemented important CPU statistics which were used for Bochs CPU model performance analysis.
old statistics code from paging.cc and cpu.cc is replaced with new infrastructure.

In order to enale statitics collection in Bochs CPU:

- Enable statistics @ compilation time in cpu/cpustats.h
- Dump statistics periodically by adding -dumpstats N into Bochs command line
 2014-10-14 15:59:10 +00:00
Stanislav Shwartsman
5eb781e45f cleanup after cpu features interface rework 2014-08-31 19:22:41 +00:00
Stanislav Shwartsman
816f5cc2d7 fixed massive code duplication 2014-07-03 06:40:42 +00:00
Stanislav Shwartsman
776cabf4fe move canonical check of high part of page split access to another function to fix code duplication 2013-12-21 21:56:55 +00:00
Stanislav Shwartsman
a85a9081b7 use shorter opcode names in the debug prints (skip the BX_IA_ prefix) 2013-12-02 20:06:59 +00:00
Stanislav Shwartsman
d082c6a0f9 implemented avx-512 masked load instructions 2013-11-30 18:37:25 +00:00
Stanislav Shwartsman
2357dc5ccc Fixed number of invocations of the BX_INSTR_LIN_ACCESS instrumentation callback in cpu/access32.cc, cpu/access64.cc and cpu/paging.cc specify the BX_READ memory access type where BX_RW really applies. 
SF Patch #1335 by Mateusz Jurczyk
 2013-07-24 18:54:18 +00:00
Stanislav Shwartsman
53d14c01b5 correctly signal bit 12 (nmi unblocking by iret) in vmx interruption info. todo: find how to implement it clean way 2013-03-06 21:11:23 +00:00
Stanislav Shwartsman
40669115e1 use different formatter for printing phy address in paging dbg messages 2013-02-14 19:30:59 +00:00
Stanislav Shwartsman
64df073617 implemented virtualization exception feature 2013-01-28 16:30:25 +00:00
Stanislav Shwartsman
d38fce8218 preparation for future extension in translate_linear - I would like to return data to caller through tlbEntry 2013-01-27 19:27:30 +00:00
Stanislav Shwartsman
4bed791ccb Added year 2013 to Copyright in all files already modified in new year 2013-01-19 20:45:03 +00:00
Stanislav Shwartsman
05d36f0acc fixed performance bug in smap/smep fix - tlb never had user executable page permission 2013-01-19 20:14:44 +00:00
Stanislav Shwartsman
eda28b95f4 unfortunately this change is rquired to make SMAP and SMEP features to work. 
I observed ~5% emulation slowdown ... thinking about possible mitigations

this fixes TLB issue with SMAP and SMEP features.
these features introduce a new behavior when page can be inaccessible by System (CPL=0).
Current behavior is accessBits was not supporting it but legacy (from Bochs 2.3.6) was.
The wrong behavior can be observed if user access a user page and system access the same page later.
user access is fine and pass SMEP/SMA checks and stores the translation in TLB.
the system access will hit the TLB and nobody could detect that system cannot access that page.
 2013-01-16 17:28:20 +00:00
Stanislav Shwartsman
574b69c81e fixed MSDEV warnings 2012-11-27 15:40:45 +00:00
Stanislav Shwartsman
8a01ee1661 implemented SVM decode assists. some is still missing - coming soon 2012-11-02 07:46:50 +00:00
Stanislav Shwartsman
744001e35e Implemented VMX APIC Registers Virtualization and VMX Virtual Interrupt Delivery emulation 
Bugfix: VMX: VmEntry should do TPR Virtualization (TPR Shadow + APIC Access Virtualization case is affected) and even could possibly cause TPR Threshold VMEXIT
 2012-10-26 18:43:53 +00:00
Stanislav Shwartsman
2f3c7ff8e4 implemented SMAP (Supervisor Mode Access Protection) from [Intel Architecture Instruction Set Extensions Programming Reference] rev14 
fixed enabling of ADX extensions in generic CPUID when enabled through .bochsrc

Small code cleanups on the way to implementation of APIC Registers Virtualization features disclosed in recent Intel SDM rev043
 2012-09-10 15:22:26 +00:00
Stanislav Shwartsman
e0729e32b8 fixed bug 3548108 VMEXIT instruction length Not always getting updated 2012-07-26 16:03:26 +00:00
Stanislav Shwartsman
3415f7bb0f add XD bit to page attributes print 2012-06-28 10:59:30 +00:00
Stanislav Shwartsman
515d8b5c25 add new instrumentation callbacks for physical memory access from CPU 2012-06-18 11:41:26 +00:00
Stanislav Shwartsman
171d400bd8 GATHER: update gather mask handling to match latest Intel SDM definition 
Fixes in x86 HW breakpoint handling
 2012-06-06 14:01:45 +00:00
Stanislav Shwartsman
f528290652 fixed bug EPT Access Dirty support 2012-05-27 19:17:13 +00:00