Commits · 6c6d237a865041972ec5b226657398f3b3018561 · Anton / libtcg

Sep 05, 2019

target/arm: Convert T16 one low register and immediate · 6c6d237a


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-53-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

6c6d237a

target/arm: Convert T16 add/sub (3 low, 2 low and imm) · c4d3095b

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-52-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

c4d3095b

target/arm: Convert T16 load/store multiple · 6e8514ba

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-51-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

6e8514ba

target/arm: Convert T16 add pc/sp (immediate) · 1cb13234

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-50-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1cb13234

target/arm: Convert T16 load/store (immediate offset) · 07afd747

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-49-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

07afd747

target/arm: Convert T16 load/store (register offset) · d1d22917

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-48-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

d1d22917

target/arm: Convert T16 data-processing (two low regs) · 080c4ead

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-47-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

080c4ead

target/arm: Add skeleton for T16 decodetree · f97b454e

Richard Henderson authored 5 years ago


Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-46-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

f97b454e

target/arm: Simplify disas_arm_insn · 590057d9

Richard Henderson authored 5 years ago


Fold away all of the cases that now just goto illegal_op,
because all of their internal bits are now in decodetree.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-45-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

590057d9

target/arm: Simplify disas_thumb2_insn · f843e771

Richard Henderson authored 5 years ago


Fold away all of the cases that now just goto illegal_op,
because all of their internal bits are now in decodetree.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-44-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

f843e771

target/arm: Convert TT · d449f174

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-43-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

d449f174

target/arm: Convert SG · 35d240ac

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-42-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

35d240ac

target/arm: Convert Table Branch · 808092bb

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-41-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

808092bb

target/arm: Convert Unallocated memory hint · 610f4e17

Richard Henderson authored 5 years ago


Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-40-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

610f4e17

target/arm: Convert PLI, PLD, PLDW · beb595f6

Richard Henderson authored 5 years ago


Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-39-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

beb595f6

target/arm: Convert SETEND · 48c04a5d

Richard Henderson authored 5 years ago


Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-38-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

48c04a5d

target/arm: Convert CPS (privileged) · 52f83b9c

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-37-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

52f83b9c

target/arm: Convert Clear-Exclusive, Barriers · 519b8471

Richard Henderson authored 5 years ago


Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-36-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

519b8471

target/arm: Convert RFE and SRS · 885782a7

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-35-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

885782a7

target/arm: Convert SVC · 542f5188

Richard Henderson authored 5 years ago


Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-34-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

542f5188

target/arm: Convert B, BL, BLX (immediate) · 360144f3

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-33-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

360144f3

target/arm: Diagnose base == pc for LDM/STM · b0e382b8

Richard Henderson authored 5 years ago

We have been using store_reg and not store_reg_for_load when writing
back a loaded value into the base register. At first glance this is
incorrect when base == pc, however that case is UNPREDICTABLE.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-32-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

b0e382b8

target/arm: Diagnose too few registers in list for LDM/STM · 4b222545

Richard Henderson authored 5 years ago


This has been a TODO item for quite a while.  The minimum bit
count for A32 and T16 is 1, and for T32 is 2.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-31-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

4b222545

target/arm: Diagnose writeback register in list for LDM for v7 · 3949f467

Richard Henderson authored 5 years ago

Prior to v7, for the A32 encoding, this operation wrote an UNKNOWN
value back to the base register. Starting in v7 this is UNPREDICTABLE.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-30-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3949f467

target/arm: Convert LDM, STM · c5c426d4

Richard Henderson authored 5 years ago


This includes a minor bug fix to LDM (user), which requires
bit 21 to be 0, which means no writeback.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-29-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

c5c426d4

target/arm: Convert MOVW, MOVT · 8f445127

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-28-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

8f445127

target/arm: Convert Signed multiply, signed and unsigned divide · 2c7c4e09

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-27-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2c7c4e09

target/arm: Convert packing, unpacking, saturation, and reversal · 46497f6a

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-26-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

46497f6a

target/arm: Convert Parallel addition and subtraction · adf1a566

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-25-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

adf1a566

target/arm: Convert USAD8, USADA8, SBFX, UBFX, BFC, BFI, UDF · 86d21e4b

Richard Henderson authored 5 years ago


In op_bfx, note that tcg_gen_{,s}extract_i32 already checks
for width == 32, so we don't need to special case that here.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-24-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

86d21e4b

target/arm: Diagnose UNPREDICTABLE ldrex/strex cases · af288228

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-23-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

af288228

target/arm: Convert Synchronization primitives · 1efdd407

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-22-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1efdd407

target/arm: Convert load/store (register, immediate, literal) · 5e291fe1

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5e291fe1

target/arm: Convert T32 ADDW/SUBW · 145952e8

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-20-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

145952e8

target/arm: Convert the rest of A32 Miscelaneous instructions · 2cde9ea5

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-19-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2cde9ea5

target/arm: Convert ERET · ef11bc3c

Richard Henderson authored 5 years ago


Pass the T5 encoding of SUBS PC, LR, #IMM through the normal SUBS path
to make it clear exactly what's happening -- we hit ALUExceptionReturn
along that path.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-18-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

ef11bc3c

target/arm: Convert CLZ · 4c97f5b2

Richard Henderson authored 5 years ago

Document our choice about the T32 CONSTRAINED UNPREDICTABLE behaviour.
This matches the undocumented choice made by the legacy decoder.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

4c97f5b2

target/arm: Convert BX, BXJ, BLX (register) · 4ed95abd

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

4ed95abd

target/arm: Convert Cyclic Redundancy Check · 6c35d53f

Richard Henderson authored 5 years ago


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-15-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

6c35d53f

target/arm: Convert MRS/MSR (banked, register) · d0b26644

Richard Henderson authored 5 years ago


The m-profile and a-profile decodings overlap.  Only return false
for the case of wrong profile; handle UNDEFINED for permission failure
directly.  This ensures that we don't accidentally pass an insn that
applies to the wrong profile.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190904193059.26202-14-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

d0b26644