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8 Commits

Author SHA1 Message Date
Chetan Pant 8af82b8e81 x86 hvf cpus: Fix Lesser GPL version number 
There is no "version 2" of the "Lesser" General Public License.
It is either "GPL version 2.0" or "Lesser GPL version 2.1".
This patch replaces all occurrences of "Lesser GPL version 2" with
"Lesser GPL version 2.1" in comment section.

Signed-off-by: Chetan Pant <chetan4windows@gmail.com>
Message-Id: <20201023124012.20035-1-chetan4windows@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
 2020-11-15 16:45:27 +01:00
Cameron Esfahani 8c3b0e9e67 hvf: correctly handle REX prefix in relation to legacy prefixes 
In real x86 processors, the REX prefix must come after legacy prefixes.
REX before legacy is ignored.  Update the HVF emulation code to properly
handle this.  Fix some spelling errors in constants.  Fix some decoder
table initialization issues found by Coverity.

Signed-off-by: Cameron Esfahani <dirty@apple.com>
Message-Id: <eff30ded8307471936bec5d84c3b6efbc95e3211.1574625592.git.dirty@apple.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2019-11-26 09:58:36 +01:00
Markus Armbruster 177d9e0da0 Normalize header guard symbol definition. 
We commonly define the header guard symbol without an explicit value.
Normalize the exceptions.

Done with scripts/clean-header-guards.pl.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190315145123.28030-8-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
 2019-05-13 08:58:55 +02:00
Roman Bolshakov b4e1af8961 i386: hvf: Fix register refs if REX is present 
According to Intel(R)64 and IA-32 Architectures Software Developer's
Manual, the following one-byte registers should be fetched when REX
prefix is present (sorted by reg encoding index):
AL, CL, DL, BL, SPL, BPL, SIL, DIL, R8L - R15L

The first 8 are fetched if REX.R is zero, the last 8 if non-zero.

The following registers should be fetched for instructions without REX
prefix (also sorted by reg encoding index):
AL, CL, DL, BL, AH, CH, DH, BH

Current emulation code doesn't handle accesses to SPL, BPL, SIL, DIL
when REX is present, thefore an instruction 40883e "mov %dil,(%rsi)" is
decoded as "mov %bh,(%rsi)".

That caused an infinite loop in vp_reset:
https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg03293.html

Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Message-Id: <20181018134401.44471-1-r.bolshakov@yadro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2018-10-19 13:44:12 +02:00
Paolo Bonzini ff2de1668c i386: hvf: remove addr_t 
Use target_ulong for virtual addresses and uint64_t for physical
addresses.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2017-12-22 15:02:07 +01:00
Paolo Bonzini 6701d81d74 i386: hvf: unify register enums between HVF and the rest 
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2017-12-22 15:02:07 +01:00
Paolo Bonzini f9fea77740 i386: hvf: header cleanup 
Remove inclusions of system headers and avoid "pragma once".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2017-12-22 15:02:07 +01:00
Paolo Bonzini 69e0a03c3f i386: hvf: move all hvf files in the same directory 
Just call it hvf/, no need for the "utils" suffix.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2017-12-22 15:02:05 +01:00