Commit graph

1075 commits

Author SHA1 Message Date
Merry bab4e29075 Merge pull request #498 from lioncash/ahp
A32/location_descriptor: Add AHP bit to the FPSCR mask
2020-04-22 21:04:21 +01:00
Lioncash 87083af733 general: Remove trailing spaces
General code-related cleanup. Gets rid of trailing spaces in the
codebase.
2020-04-22 21:04:21 +01:00
Lioncash d02a4e6fc9 A32/location_descriptor: Add AHP bit to the FPSCR mask
Ensures the alternate half-precision state is preserved within the
location descriptors, which will be necessary when implementing the
half-precision extensions for VFP and NEON.
2020-04-22 21:02:47 +01:00
Merry f4990a5f6b Merge pull request #499 from lioncash/movw
A32: Implement ARM-mode MOVW
2020-04-22 21:02:47 +01:00
Lioncash 106c8c2473 A32: Implement ARM-mode MOVW
Introduced to the ISA in ARMv6T2
2020-04-22 21:02:47 +01:00
Lioncash 9935f3aa28 A32: Implement Thumb-1 variant of SEVL
While we're at it, also add the Thumb-2 encoding to the encoding table
to make sure it isn't forgotten about in the future.
2020-04-22 21:02:47 +01:00
Lioncash 9a097e307f A32: Implement the ARM-mode variant of SEVL 2020-04-22 21:02:47 +01:00
Lioncash e89ca42048 A32: Implement Thumb-1 variant of YIELD 2020-04-22 21:02:47 +01:00
Lioncash ebab7ede55 A32: Implement Thumb-1 variant of WFI 2020-04-22 21:02:47 +01:00
Lioncash b4110af22a A32: Implement Thumb-1 variant of WFE 2020-04-22 21:02:47 +01:00
Lioncash 57675fe592 A32: Implement Thumb-1 variant of SEV 2020-04-22 21:02:47 +01:00
Lioncash f74762ae4e frontend/decoder/decoder_detail: Replace std::is_same, with std::is_same_v
Same thing, same readability, less characters.
2020-04-22 21:02:47 +01:00
Lioncash 07699b47ba A32/translate_thumb: Add helper function for raising exceptions
Similar to the variant within the ARM-mode translator visitor. This will
be used in subsequent changes to implement the hint instructions
introduced in ARMv7.
2020-04-22 21:02:47 +01:00
Merry 6a67da1225 Merge pull request #493 from lioncash/ir
frontend/ir/ir_emitter: Remove unnecessary logical shift overloads
2020-04-22 21:02:47 +01:00
Lioncash 64879396f6 A32: Implement Thumb-1 variant of NOP 2020-04-22 21:02:47 +01:00
Merry 30d28029a8 Merge pull request #492 from lioncash/vfp
A32: Rename vfp2-related files to vfp
2020-04-22 21:02:47 +01:00
Merry 81b908b077 Merge pull request #495 from lioncash/bkpt
A32: Implement Thumb-16's variant of BKPT
2020-04-22 21:02:47 +01:00
Lioncash b17a5d3365 A32: Implement Thumb-16's variant of BKPT 2020-04-22 21:02:47 +01:00
Lioncash b902f72001 A32/disassembler_arm: Remove <unimplemented> from hint instruction output
Given we now support hooking these hint instructions, we can consider
them implemented.
2020-04-22 21:02:47 +01:00
Lioncash 0fa0bca22a A32: Handle different variants of PLD 2020-04-22 21:02:47 +01:00
Lioncash c6f99235e1 frontend/ir/ir_emitter: Remove unnecessary logical shift overloads
These aren't necessary anymore, now that the U32U64 overload already
exists.
2020-04-22 21:02:46 +01:00
Merry 9ba503e394 Merge pull request #491 from lioncash/hint
A32: Allow hooking of hint instructions in ARM mode.
2020-04-22 21:02:46 +01:00
Lioncash 97277c598b A32: Rename vfp2-related files to vfp
Now that we fuzz against Unicorn, we aren't just restricted to VFPv2.
VFPv3 and VFPv4 facilities can now be implemented. This renames
constructs mentioning VFPv2 to just refer to VFP.
2020-04-22 21:02:46 +01:00
Lioncash 8c3122ff46 A64/translate/impl/impl: Mark locals const where applicable in DecodeBitMasks()
Follows the convention of making immutable state explicit.
2020-04-22 21:02:46 +01:00
Merry a132b56d57 Merge pull request #490 from lioncash/crc32
A32: Implement ARM-mode CRC32 instructions
2020-04-22 21:02:46 +01:00
Lioncash 966e04d03d A32: Allow hooking of hint instructions in ARM mode.
Mirrors the hooking functionality from the AArch64 frontend to make the
behavior of both consistent.
2020-04-22 21:02:46 +01:00
Lioncash 134b586c5c frontend/ir/ir_emitter: Amend arguments to conversion opcodes
Accidentally caused within 967d1fcc8d6f60749a162a96b997439450fed687.
That one's on me. My bad.
2020-04-22 21:02:46 +01:00
Lioncash e37689315d A32: Implement ARM-mode CRC32 instructions
Implements the ARM-mode variants of the CRC32 instructions introduced
within ARMv8. This is also one of the instruction cases where there is
UNPREDICTABLE behavior that is constrained (we must do one of the
options indicated by the reference manual).

In both documented cases of constrained unpredictable behavior, we treat
the instructions as unpredictable in order to allow library users to
hook the unpredictable exception to provide the intended behavior they
desire.
2020-04-22 21:02:46 +01:00
Lioncash 95d9baea67 {A32, A64}/types: Use std::array deduction guides where applicable
We also make the arrays static here, as MSVC tends to load the whole
array every time the function is called, instead of storing the data
within rodata.

This also line breaks the elements a little earlier for readability.
2020-04-22 21:02:46 +01:00
Lioncash bac945f2d8 A32: Resolve parameter discrepancies discovered via use of the Imm template 2020-04-22 21:02:46 +01:00
Lioncash e4c65721fe frontend/ir/type: Generify std::array declaration
With deduction guides, we can eliminate the need to explicitly size the
array. Also newlines the elements based off their relation, making it
slightly nicer to read.
2020-04-22 21:02:46 +01:00
Lioncash 4ba2318b2e A32: Replace immediate type aliases with the Imm template
Replaces type aliases of raw integral types with the more type-safe Imm
template, like how the AArch64 frontend has been using it.

This makes the two frontends more consistent with one another.
2020-04-22 21:02:46 +01:00
Lioncash f96036b3f1 A32/barrier: Correct PC assignment within ISB
The SetRegister() IR function doesn't allow specifying the PC as a
register. This is a discrepancy that slipped through (my bad). Instead,
we can use BranchWritePC(), like how the other similar PC modifying
locations do it.
2020-04-22 21:02:46 +01:00
Lioncash 196e7b5e35 frontend/A32/ir_emitter: Mark locals as const where applicable
Makes const usage consistent within the source file.
2020-04-22 21:02:46 +01:00
Lioncash 511613c736 frontend/A32/types: Use helper function in operator+ overload
Allows deduplicating an assert and a cast.
2020-04-22 21:02:46 +01:00
Lioncash 8103652a91 frontend: Move imm.h to the top-level directory of the frontends
Preparation to utilize the immediate type within the A32 backend as
well, which will allow eliminating numerous type aliases like Imm4,
Imm5, etc.
2020-04-22 21:02:46 +01:00
Lioncash 796bb8a7f7 frontend/A64/types: Make RegNumber() and VecNumber() constexpr
Given they simply perform casting, they can be safely made constexpr.
2020-04-22 21:02:46 +01:00
Lioncash 64e51a6d4d A32/disassembler_arm: Mark utility functions as static where applicable
These don't depend on class state and can be marked static to make that
explicit.
2020-04-22 21:02:46 +01:00
Lioncash 0c43228ad5 frontend/A64/types: Use helper functions in operator+ overloads
Allows us to get rid of another explicit cast.
2020-04-22 21:02:46 +01:00
Lioncash a1cace21a9 frontend/ir/ir_emitter: Apply const to locals where applicable
Makes const usage consistent with all other functions in the source
file.
2020-04-22 21:02:46 +01:00
Lioncash 0a35836998 frontend/ir/ir_emitter: Use switch constructs in floating point opcodes where applicable
This'll reduce the amount of noise necessary in changes implementing
half-precision instructions, as the type can just be prepended to the
switch cases, instead of rewriting the whole if/else branch.
2020-04-22 21:02:46 +01:00
Lioncash 8316d231e9 A32: Implement barrier instructions introduced in ARMv7
Provides basic implementations of the barrier instruction introduced
within ARMv7. Currently these simply mirror the behavior of the AArch64
equivalents.
2020-04-22 21:02:46 +01:00
Lioncash 7fc3bd689d A32: Implement ARM-mode MLS 2020-04-22 21:02:46 +01:00
Lioncash 8b338b7def A32: Implement ARM-mode MOVT 2020-04-22 21:02:46 +01:00
Lioncash 877fa0f8c3 A32: Implement ARM-mode SBFX 2020-04-22 21:02:46 +01:00
Lioncash 47218ee65d A32: Implement ARM-mode UBFX 2020-04-22 21:02:46 +01:00
Lioncash 2970b34e3c A32: Implement ARM-mode BFI 2020-04-22 21:02:46 +01:00
Lioncash fab3a59e05 A32: Implement ARM-mode BFC 2020-04-22 21:02:46 +01:00
Lioncash 7305d13221 A32: Implement ARM-mode RBIT 2020-04-22 21:02:46 +01:00
Lioncash b2f7a0e7ba A32: Implement ARM-mode SDIV/UDIV
Now that we have Unicorn in place, we can freely implement instructions
introduced in newer versions of the ARM architecture.
2020-04-22 21:02:46 +01:00