The following improvements are made for predicated HVX instructions
During gen_commit_hvx, unconditionally move the "new" value into
the dest
Don't set slot_cancelled
Remove runtime bookkeeping of which registers were updated
Reduce the cases where gen_log_vreg_write[_pair] is called
It's only needed for special operands VxxV and VyV
Remove gen_log_qreg_write
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-15-tsimpson@quicinc.com>
We only need to track slot for predicated stores and predicated HVX
instructions.
Add arguments to the probe helper functions to indicate if the slot
is predicated.
Here is a simple example of the differences in the TCG code generated:
IN:
0x00400094: 0xf900c102 { if (P0) R2 = and(R0,R1) }
BEFORE
---- 00400094
mov_i32 slot_cancelled,$0x0
mov_i32 new_r2,r2
and_i32 tmp0,p0,$0x1
brcond_i32 tmp0,$0x0,eq,$L1
and_i32 tmp0,r0,r1
mov_i32 new_r2,tmp0
br $L2
set_label $L1
or_i32 slot_cancelled,slot_cancelled,$0x8
set_label $L2
mov_i32 r2,new_r2
AFTER
---- 00400094
mov_i32 new_r2,r2
and_i32 tmp0,p0,$0x1
brcond_i32 tmp0,$0x0,eq,$L1
and_i32 tmp0,r0,r1
mov_i32 new_r2,tmp0
br $L2
set_label $L1
set_label $L2
mov_i32 r2,new_r2
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-14-tsimpson@quicinc.com>
We assign the instruction destination register to hex_new_value[num]
instead of a TCG temp that gets copied back to hex_new_value[num].
We introduce new functions get_result_gpr[_pair] to facilitate getting
the proper destination register.
Since we preload hex_new_value for predicated instructions, we don't
need the check for slot_cancelled. So, we call gen_log_reg_write instead.
We update the helper function generation and gen_tcg.h to maintain the
disable-hexagon-idef-parser configuration.
Here is a simple example of the differences in the TCG code generated:
IN:
0x00400094: 0xf900c102 { if (P0) R2 = and(R0,R1) }
BEFORE
---- 00400094
mov_i32 slot_cancelled,$0x0
mov_i32 new_r2,r2
mov_i32 loc2,$0x0
and_i32 tmp0,p0,$0x1
brcond_i32 tmp0,$0x0,eq,$L1
and_i32 tmp0,r0,r1
mov_i32 loc2,tmp0
br $L2
set_label $L1
or_i32 slot_cancelled,slot_cancelled,$0x8
set_label $L2
and_i32 tmp0,slot_cancelled,$0x8
movcond_i32 new_r2,tmp0,$0x0,loc2,new_r2,eq
mov_i32 r2,new_r2
AFTER
---- 00400094
mov_i32 slot_cancelled,$0x0
mov_i32 new_r2,r2
and_i32 tmp0,p0,$0x1
brcond_i32 tmp0,$0x0,eq,$L1
and_i32 tmp0,r0,r1
mov_i32 new_r2,tmp0
br $L2
set_label $L1
or_i32 slot_cancelled,slot_cancelled,$0x8
set_label $L2
mov_i32 r2,new_r2
We'll remove the unnecessary manipulation of slot_cancelled in a
subsequent patch.
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-13-tsimpson@quicinc.com>
The F2_sffms instruction [r0 -= sfmpy(r1, r2)] doesn't properly
handle -0. Previously we would negate the input operand by subtracting
from zero. Instead, we negate by changing the sign bit.
Test case added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-12-tsimpson@quicinc.com>
Extend the analyze_<tag> functions for HVX vector and predicate writes
Remove calls to ctx_log_vreg_write[_pair] from gen_tcg_funcs.py
During gen_start_packet, reload the predicated HVX registers into
fugure_VRegs and tmp_VRegs
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-8-tsimpson@quicinc.com>
The pkt_has_store_s1 field in CPUHexagonState is only needed in generated
helpers for scalar load instructions. See check_noshuf and mem_load[1248]
in op_helper.c.
We add logic in gen_analyze_funcs.py to set need_pkt_has_store_s1 in
DisasContext when it is needed at runtime.
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-7-tsimpson@quicinc.com>
We create a new generator that creates an analyze_<tag> function for
each instruction. Currently, these functions record the writes to
R, P, and C registers by calling ctx_log_reg_write[_pair] or
ctx_log_pred_write.
During gen_start_packet, we invoke the analyze_<tag> function for
each instruction in the packet, and we mark the implicit register
and predicate writes.
Doing the analysis up front has several advantages
- We remove calls to ctx_log_* from gen_tcg_funcs.py and genptr.c
- After the analysis is performed, we can initialize hex_new_value
for each of the predicated assignments rather than during TCG
generation for the instructions
- This is a stepping stone for future work where the analysis will
include the set of registers that are read. In cases where
the packet doesn't have an overlap between the registers that are
written and registers that are read, we can avoid the intermediate
step of writing to hex_new_value. Note that other checks will also
be needed (e.g., no instructions can raise an exception).
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-6-tsimpson@quicinc.com>
These instructions perform a deallocframe+return (jumpr r31)
Add overrides for
L4_return
SL2_return
L4_return_t
L4_return_f
L4_return_tnew_pt
L4_return_fnew_pt
L4_return_tnew_pnt
L4_return_fnew_pnt
SL2_return_t
SL2_return_f
SL2_return_tnew
SL2_return_fnew
This patch eliminates the last helper that uses write_new_pc, so we
remove it from op_helper.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-5-tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-4-tsimpson@quicinc.com>
Add overrides for
J2_callr
J2_callrt
J2_callrf
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-3-tsimpson@quicinc.com>
Removes code paths used by COF instructions, which are no longer
processed by idef-parser.
Tested-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230131223133.8592-1-anjo@rev.ng>
Merge mov with andi.
Suggested-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20230306225724.2105263-1-richard.henderson@linaro.org>
The --disable-hexagon-idef-parser configuration was broken by this patch
2feacf60c23ba6 (target/hexagon: Drop tcg_temp_free from C code)
That config is not tested by CI
Fix is simple: Mark a few TCGv variables as unused
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230306172515.346813-1-tsimpson@quicinc.com>
We already have a temporary, res, which we can use for the intermediate
shift result. Simplify the constant to -1 instead of 0xf*f.
This was the last use of gen_tmp_value, so remove it.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The allocation is immediately followed by either tcg_gen_mov_i32
or gen_read_preg (which contains tcg_gen_mov_i32), so the zero
initialization is immediately discarded.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The allocation is immediately followed by tcg_gen_mov_i32,
so the initial assignment of zero is discarded.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The GET_USR_FIELD macro initializes the output, so the initial assignment
of zero is discarded. This is the only use of get_tmp_value outside of
parser-helper.c, so make it static.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rename from gen_tmp_value_from_imm to match gen_constant vs gen_tmp.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Translators are no longer required to free tcg temporaries.
This removes gen_rvalue_free, gen_rvalue_free_manual and
free_variables, whose only purpose was to emit tcg_temp_free.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Translators are no longer required to free tcg temporaries.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Translators are no longer required to free tcg temporaries.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This is now equivalent to gen_tmp.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Since tcg_temp_new_* is now identical, use those.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In preparation for returning the number of insns generated
via the same pointer. Adjust only the prototypes so far.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20230227135202.9710-25-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit was created with scripts/clean-includes.
All .c should include qemu/osdep.h first. The script performs three
related cleanups:
* Ensure .c files include qemu/osdep.h first.
* Including it in a .h is redundant, since the .c already includes
it. Drop such inclusions.
* Likewise, including headers qemu/osdep.h includes is redundant.
Drop these, too.
Changes to standalone programs dropped, because these intentionally
don't use qemu/osdep.h:
target/hexagon/gen_dectree_import.c
target/hexagon/gen_semantics.c
target/hexagon/idef-parser/idef-parser.h
target/hexagon/idef-parser/parser-helpers.c
target/hexagon/idef-parser/parser-helpers.h
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20230202133830.2152150-14-armbru@redhat.com>
Some registers are defined to have immutable bits, this commit
will implement that behavior.
Signed-off-by: Marco Liebel <quic_mliebel@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20230105102349.2181856-1-quic_mliebel@quicinc.com>
This patch manually suppresses a warning for an unused variable
(yynerrs) emitted by bison.
This warning has been triggered for the first time by clang 15.
This patch also disables `-Wextra`, which is not usually adopted in
QEMU. However, clang 15 triggers the warning fixed in this patch even in
absence of `-Wextra`.
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Tested-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221221155327.1504117-1-ale@rev.ng>
The patch renames the identifier of the 32bit register
HEX_REG_P3_0 to HEX_REG_P3_0_ALIASED.
This change is to intended to provide some warning that
HEX_REG_P3_0 is an aliased register which has multiple
representations in CPU state and therefore might require
special handling in some contexts. The hope is to prevent
accidental misuse of this register e.g the issue reported
for the signals tests failure [here][1].
[1]: https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg01102.html
Signed-off-by: Mukilan Thiyagarajan <quic_mthiyaga@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221229092006.10709-3-quic_mthiyaga@quicinc.com>
Performance improvement
Add pkt and insn to DisasContext
Many functions need information from all 3 structures, so merge
them together.
2)
Bug fix
Fix predicated assignment to .tmp and .cur
3)
Performance improvement
Add overrides for S2_asr_r_r_sat/S2_asl_r_r_sat
These functions will not be handled by idef-parser
4-11)
The final 8 patches improve change-of-flow handling.
Currently, we set the PC to a new address before exiting a TB. The
ultimate goal is to use direct block chaining. However, several steps
are needed along the way.
4)
When a packet has more than one change-of-flow (COF) instruction, only
the first one taken is considered. The runtime bookkeeping is only
needed when there is more than one COF instruction in a packet.
5, 6)
Remove PC and next_PC from the runtime state and always use a
translation-time constant. Note that next_PC is used by call instructions
to set LR and by conditional COF instructions to set the fall-through
address.
7, 8, 9)
Add helper overrides for COF instructions. In particular, we must
distinguish those that use a PC-relative address for the destination.
These are candidates for direct block chaining later.
10)
Use direct block chaining for packets that have a single PC-relative
COF instruction. Instead of generating the code while processing the
instruction, we record the effect in DisasContext and generate the code
during gen_end_tb.
11)
Use direct block chaining for tight loops. We look for TBs that end
with an endloop0 that will branch back to the TB start address.
12-21)
Instruction definition parser (idef-parser) from rev.ng
Parses the instruction semantics and generates TCG
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Merge tag 'pull-hex-20221216-1' of https://github.com/quic/qemu into staging
1)
Performance improvement
Add pkt and insn to DisasContext
Many functions need information from all 3 structures, so merge
them together.
2)
Bug fix
Fix predicated assignment to .tmp and .cur
3)
Performance improvement
Add overrides for S2_asr_r_r_sat/S2_asl_r_r_sat
These functions will not be handled by idef-parser
4-11)
The final 8 patches improve change-of-flow handling.
Currently, we set the PC to a new address before exiting a TB. The
ultimate goal is to use direct block chaining. However, several steps
are needed along the way.
4)
When a packet has more than one change-of-flow (COF) instruction, only
the first one taken is considered. The runtime bookkeeping is only
needed when there is more than one COF instruction in a packet.
5, 6)
Remove PC and next_PC from the runtime state and always use a
translation-time constant. Note that next_PC is used by call instructions
to set LR and by conditional COF instructions to set the fall-through
address.
7, 8, 9)
Add helper overrides for COF instructions. In particular, we must
distinguish those that use a PC-relative address for the destination.
These are candidates for direct block chaining later.
10)
Use direct block chaining for packets that have a single PC-relative
COF instruction. Instead of generating the code while processing the
instruction, we record the effect in DisasContext and generate the code
during gen_end_tb.
11)
Use direct block chaining for tight loops. We look for TBs that end
with an endloop0 that will branch back to the TB start address.
12-21)
Instruction definition parser (idef-parser) from rev.ng
Parses the instruction semantics and generates TCG
# gpg: Signature made Fri 16 Dec 2022 20:41:53 GMT
# gpg: using RSA key 3635C788CE62B91FD4C59AB47B0244FB12DE4422
# gpg: Good signature from "Taylor Simpson (Rock on) <tsimpson@quicinc.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 3635 C788 CE62 B91F D4C5 9AB4 7B02 44FB 12DE 4422
* tag 'pull-hex-20221216-1' of https://github.com/quic/qemu: (21 commits)
target/hexagon: import additional tests
target/hexagon: call idef-parser functions
target/hexagon: import parser for idef-parser
target/hexagon: import lexer for idef-parser
target/hexagon: prepare input for the idef-parser
target/hexagon: introduce new helper functions
target/hexagon: make helper functions non-static
target/hexagon: make slot number an unsigned
target/hexagon: import README for idef-parser
target/hexagon: update MAINTAINERS for idef-parser
Hexagon (target/hexagon) Use direct block chaining for tight loops
Hexagon (target/hexagon) Use direct block chaining for direct jump/branch
Hexagon (target/hexagon) Add overrides for various forms of jump
Hexagon (target/hexagon) Add overrides for compound compare and jump
Hexagon (target/hexagon) Add overrides for direct call instructions
Hexagon (target/hexagon) Remove next_PC from runtime state
Hexagon (target/hexagon) Remove PC from the runtime state
Hexagon (target/hexagon) Only use branch_taken when packet has multi cof
Hexagon (target/hexagon) Add overrides for S2_asr_r_r_sat/S2_asl_r_r_sat
Hexagon (target/hexagon) Fix predicated assignment to .tmp and .cur
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Extend gen_tcg_funcs.py in order to emit calls to the functions emitted
by the idef-parser, if available.
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-11-anjo@rev.ng>
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Paolo Montesel <babush@rev.ng>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-10-anjo@rev.ng>
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Paolo Montesel <babush@rev.ng>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-9-anjo@rev.ng>
Introduce infrastructure necessary to produce a file suitable for being
parsed by the idef-parser. A build option is also added to fully disable
the output of idef-parser, which is useful for debugging.
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-8-anjo@rev.ng>
These helpers will be employed by the idef-parser generated code, to
correctly implement instruction semantics. "Helper" functions, in the
context of this patch, refers to functions which provide a manual TCG
implementation of certain features.
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Niccolò Izzo <nizzo@rev.ng>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-6-anjo@rev.ng>
Make certain helper functions non-static, making them available outside
genptr.c. These functions are required by code generated by the
idef-parser.
This commit also makes some functions in op_helper.c non-static in order
to avoid having them marked as unused when using the idef-parser
generated code.
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Paolo Montesel <babush@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-5-anjo@rev.ng>
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Paolo Montesel <babush@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-4-anjo@rev.ng>
Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-3-anjo@rev.ng>
Direct block chaining is documented here
https://qemu.readthedocs.io/en/latest/devel/tcg.html#direct-block-chaining
Hexagon inner loops end with the endloop0 instruction
To go back to the beginning of the loop, this instructions writes to PC
from register SA0 (start address 0). To use direct block chaining, we
have to assign PC with a constant value. So, we specialize the code
generation when the start of the translation block is equal to SA0.
When this is the case, we defer the compare/branch from endloop0 to
gen_end_tb. When this is done, we can assign the start address of the TB
to PC.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-12-tsimpson@quicinc.com>
Direct block chaining is documented here
https://qemu.readthedocs.io/en/latest/devel/tcg.html#direct-block-chaining
Recall that Hexagon allows packets with multiple jumps where only the
first one with a true predicate will actually jump. We can use
tcg_gen_goto_tb/tcg_gen_exit_tb when the packet contains a single
PC-relative branch or jump. If not, we use tcg_gen_lookup_and_goto_ptr.
We add the following to DisasContext in order to delay the branching
until the end of packet commit (in gen_end_tb)
branch_cond
The TCGCond condition under which the branch is taken
When branch_cond == TCG_COND_NEVER, there isn't a single
direct branch in this packet.
When branch_cond != TCG_COND_ALWAYS, the value is in
hex_branch_taken
branch_dest
The destination of the branch
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-11-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-10-tsimpson@quicinc.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-9-tsimpson@quicinc.com>
The imported files don't properly mark all CONDEXEC instructions, so
we add some logic to hex_common.py to add the attribute.
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-7-tsimpson@quicinc.com>
Add pc field to Packet structure
For helpers that need PC, pass an extra argument
Remove slot arg from conditional jump helpers
On a trap0, copy pkt->pc into hex_gpr[HEX_REG_PC]
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-6-tsimpson@quicinc.com>
When a packet has more than one change-of-flow instruction, only the first
one to branch is considered. We use the branch_taken variable to keep
track of this.
However, when there is a single cof instruction, we don't need the same
amount of bookkeeping.
We add the pkt_has_multi_cof member to the Packet structure, and pass this
information to the needed functions.
When there is a generated helper function with cof, the generator will
pass this pkt_has_multi_cof as a runtime value.
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-5-tsimpson@quicinc.com>
These instructions will not be generated by idef-parser, so we override
them manually.
Test cases added to tests/tcg/hexagon/usr.c
Co-authored-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221108162906.3166-4-tsimpson@quicinc.com>
Here are example instructions with a predicated .tmp/.cur assignment
if (p1) v12.tmp = vmem(r7 + #0)
if (p0) v12.cur = vmem(r9 + #0)
The .tmp/.cur indicates that references to v12 in the same packet
take the result of the load. However, when the predicate is false,
the value at the start of the packet should be used. After the packet
commits, the .tmp value is dropped, but the .cur value is maintained.
To fix this bug, we preload the original value from the HVX register
into the temporary used for the result.
Test cases added to tests/tcg/hexagon/hvx_misc.c
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Co-authored-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-3-tsimpson@quicinc.com>
This enables us to reduce the number of parameters to many functions
In particular, the generated functions previously took all 3 as arguments
Not only does this simplify the code, it improves the translation time
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20221108162906.3166-2-tsimpson@quicinc.com>
Convert the hexagon CPU class to use 3-phase reset, so it doesn't
need to use device_class_set_parent_reset() any more.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Edgar E. Iglesias <edgar@zeroasic.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-id: 20221124115023.2437291-6-peter.maydell@linaro.org
Bug fix in gen_tcg_funcs.py
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Merge tag 'pull-hex-20221003' of https://github.com/quic/qemu into staging
Make store handling faster and more robust
Bug fix in gen_tcg_funcs.py
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# gpg: Signature made Mon 03 Oct 2022 14:08:46 EDT
# gpg: using RSA key 3635C788CE62B91FD4C59AB47B0244FB12DE4422
# gpg: Good signature from "Taylor Simpson (Rock on) <tsimpson@quicinc.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 3635 C788 CE62 B91F D4C5 9AB4 7B02 44FB 12DE 4422
* tag 'pull-hex-20221003' of https://github.com/quic/qemu:
Hexagon (gen_tcg_funcs.py): avoid duplicated tcg code on A_CVI_NEW
Hexagon (target/hexagon) move store size tracking to translation
Hexagon (target/hexagon) Change decision to set pkt_has_store_s[01]
Hexagon (target/hexagon) add instruction attributes from archlib
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The availability of tb->pc will shortly be conditional.
Introduce accessor functions to minimize ifdefs.
Pass around a known pc to places like tcg_gen_code,
where the caller must already have the value.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Hexagon instructions with the A_CVI_NEW attribute produce a vector value
that can be used in the same packet. The python function responsible for
generating code for such instructions has a typo ("if" instead of
"elif"), which makes genptr_dst_write_ext() be executed twice, thus also
generating the same tcg code twice. Fortunately, this doesn't cause any
problems for correctness, but it is less efficient than it could be. Fix
it by using an "elif" and avoiding the unnecessary extra code gen.
Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <fa706b192b2a3a0ffbd399fa8dbf0d5b2c5b82d9.1664568492.git.quic_mathbern@quicinc.com>
The store width is needed for packet commit, so it is stored in
ctx->store_width. Currently, it is set when a store has a TCG
override instead of a QEMU helper. In the QEMU helper case, the
ctx->store_width is not set, we invoke a helper during packet commit
that uses the runtime store width.
This patch ensures ctx->store_width is set for all store instructions,
so performance is improved because packet commit can generate the proper
TCG store rather than the generic helper.
We do this by
- Use the attributes from the instructions during translation to
set ctx->store_width
- Remove setting of ctx->store_width from genptr.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220920080746.26791-3-tsimpson@quicinc.com>
We have found cases where pkt_has_store_s[01] is set incorrectly.
This leads to generating an unnecessary store that is left over
from a previous packet.
Add an attribute to determine if an instruction is a scalar store
The attribute is attached to the fSTORE macro (hex_common.py)
Update the logic in decode.c that sets pkt_has_store_s[01]
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220920080746.26791-4-tsimpson@quicinc.com>
The imported files from the architecture library have added some
instruction attributes. Some of these will be used in a subsequent
patch for determing the size of a store.
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220920080746.26791-2-tsimpson@quicinc.com>
Remove encodings guarded by ifdef that is not defined
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220606222327.7682-4-tsimpson@quicinc.com>
Pass these along to translator_loop -- pc may be used instead
of tb->pc, and host_pc is currently unused. Adjust all targets
at one time.
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
VyV operand is only used in the vshuff and vdeal instructions. These
instructions write to both VyV and VxV operands. In the case where
both operands are the same register, we need a separate location for
VyV. We use the existing vtmp field in CPUHexagonState.
Test case added in tests/tcg/hexagon/hvx_misc.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220718230320.24444-2-tsimpson@quicinc.com>
The semantics of a mem_noshuf packet are that the store effectively
happens before the load. However, in cases where the load raises an
exception, we cannot simply execute the store first.
This change adds a probe to check that the load will not raise an
exception before executing the store.
If the load is predicated, this requires special handling. We check
the condition before performing the probe. Since, we need the EA to
perform the check, we move the GET_EA portion inside CHECK_NOSHUF_PRED.
Test case added in tests/tcg/hexagon/mem_noshuf_exception.c
Suggested-by: Alessandro Di Federico <ale@rev.ng>
Suggested-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220707210546.15985-3-tsimpson@quicinc.com>
Call the CHECK_NOSHUF macro multiple times: once in the
fGEN_TCG_PRED_LOAD() and again in fLOAD().
Before this commit, a packet with a store and a predicated
load with mem_noshuf that gets encoded like this:
{ P0 = cmp.eq(R17,#0x0)
memw(R18+#0x0) = R2
if (!P0.new) R3 = memw(R17+#0x4) }
... would end up generating a branch over both the load
and the store like so:
...
brcond_i32 loc17,$0x0,eq,$L1
mov_i32 loc18,store_addr_1
qemu_st_i32 store_val32_1,store_addr_1,leul,0
qemu_ld_i32 loc16,loc7,leul,0
set_label $L1
...
Test cases added to tests/tcg/hexagon/mem_noshuf.c
Co-authored-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220707210546.15985-2-tsimpson@quicinc.com>
Cleaned up with scripts/clean-header-guards.pl.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220506134911.2856099-5-armbru@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Header guard symbols should match their file name to make guard
collisions less likely.
Cleaned up with scripts/clean-header-guards.pl, followed by some
renaming of new guard symbols picked by the script to better ones.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220506134911.2856099-2-armbru@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[Change to generated file ebpf/rss.bpf.skeleton.h backed out]
G_NORETURN was introduced in glib 2.68, fallback to G_GNUC_NORETURN in
glib-compat.
Note that this attribute must be placed before the function declaration
(bringing a bit of consistency in qemu codebase usage).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220420132624.2439741-20-marcandre.lureau@redhat.com>
We have fetched and locked the logfile in translator_loop.
Pass the filepointer down to the disas_log hook so that it
need not be fetched and locked again.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-13-richard.henderson@linaro.org>
This code appears to be trying to make sure there is a logfile.
But that's already true -- the logfile will either be set by -D,
or will be stderr. In either case, not appropriate here.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-3-richard.henderson@linaro.org>
When building with clang version 13.0.0 (eg. Fedora 13.0.0-3.fc35),
two unused variables introduced by macro GATHER_FUNCTION and
SCATTER_FUNCTION will cause building process failure due to
[-Werror -Wunused-variable].
Signed-off-by: Zongyuan Li <zongyuan.li@smartx.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/831
Message-Id: <20220124064339.56027-1-zongyuan.li@smartx.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
On Hexagon, c4 is an alias for predicate registers P3:0. If we assign to
c4 inside a packet with reads from predicate registers, the predicate
reads should get the old values.
Test case added to tests/tcg/hexagon/preg_alias.c
Co-authored-by: Michael Lambert <mlambert@cuicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-13-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Fix typo that checked for 32 bit nan instead of 64 bit
Test case added in tests/tcg/hexagon/usr.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-11-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
The float??_minnum implementation differs from Hexagon for SNaN,
it returns NaN, but Hexagon returns the other input. So, we use
float??_minimum_number.
Test cases added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220308190410.22355-1-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
The arch_sf_recip_common function was calling float32_getexp which
adjusts for denorm, but the we actually need the raw exponent bits.
This function is called from 3 instructions
sfrecipa
sffixupn
sffixupd
Test cases added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-6-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Instead of checking for nan arguments, use float??_unordered_quiet
test cases added in a subsequent patch to more extensively test USR bits
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-4-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Versions V3 and earlier should treat the "K_const" and "length" values
as unsigned.
Modified circ_test_v3() in tests/tcg/hexagon/circ.c to reproduce the bug
Signed-off-by: Michael Lambert <mlambert@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-2-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
ArchCPU is our interface with target-specific code. Use it as
a forward-declared opaque pointer (abstract type), having its
structure defined by each target.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-15-f4bug@amsat.org>
Replace the boilerplate code to declare CPU QOM types
and macros, and forward-declare the CPU instance type.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-14-f4bug@amsat.org>
While CPUState is our interface with generic code, CPUArchState is
our interface with target-specific code. Use CPUArchState as an
abstract type, defined by each target.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-13-f4bug@amsat.org>
HexagonCPU field parent_class is of type CPUClass, which
is declared in "hw/core/cpu.h".
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-11-f4bug@amsat.org>
Many files use "qemu/log.h" declarations but neglect to include
it (they inherit it via "exec/exec-all.h"). "exec/exec-all.h" is
a core component and shouldn't be used that way. Move the
"qemu/log.h" inclusion locally to each unit requiring it.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220207082756.82600-10-f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The qemu-common.h header is not supposed to be included from any
other header files, only from .c files (as documented in a comment at
the start of it).
Move the include to linux-user/hexagon/cpu_loop.c, which needs it for
the declaration of cpu_exec_step_atomic().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-id: 20211129200510.1233037-3-peter.maydell@linaro.org
Add new file to target/hexagon/meson.build
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Imported from the Hexagon architecture library
imported/allext.idef Top level file for all extensions
imported/mmvec/ext.idef HVX instruction definitions
Support functions added to target/hexagon/genptr.c
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Build the infrastructure to create overrides for HVX instructions.
We create a new empty file (gen_tcg_hvx.h) that will be populated
in subsequent patches.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Probe and commit vector stores (masked and scatter/gather)
Log vector register writes
Add the execution counters to the debug log
Histogram instructions
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Functions to support scatter/gather
Add new file to target/hexagon/meson.build
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Add HVX support to the semantics generator
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Imported from the Hexagon architecture library
imported/allext_macros.def Top level macro include for all extensions
imported/macros.def Scalar core macros (some HVX here)
imported/mmvec/macros.def HVX macro definitions
The macro definition files specify instruction attributes that are applied
to each instruction that reverences the macro.
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
macros to interface with the generator
macros referenced in instruction semantics
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
HVX is a set of wide vector instructions. Machine state includes
vector registers (VRegs)
vector predicate registers (QRegs)
temporary registers for intermediate values
store buffer (masked stores and scatter/gather)
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
The fallback code in cpu_loop_exit_sigsegv is sufficient
for hexagon linux-user.
Remove the code from cpu_loop that raises SIGSEGV.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Change SET_USR_FIELD to write to hex_new_value[HEX_REG_USR] instead
of hex_gpr[HEX_REG_USR].
Then, we need code to mark the instructions that can set implicitly
set USR
- Macros added to hex_common.py
- A_FPOP added in translate.c
Test case added in tests/tcg/hexagon/overflow.c
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Change additional tcg_const_tl to tcg_constant_tl
Note that gen_pred_cancal had slot_mask initialized with tcg_const_tl.
However, it is not constant throughout, so we initialize it with
tcg_temp_new and replace the first use with the constant value.
Inspired-by: Richard Henderson <richard.henderson@linaro.org>
Inspired-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
GDB single-stepping is now handled generically.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The function is trivial for user-only, but still must be present.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Replace uses of tcg_const_* with the allocate and free close together.
Inspired-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211003004750.3608983-3-f4bug@amsat.org>
The gen_pred_cancel() function, introduced in commit a646e99cb9
(Hexagon macros) doesn't use the 'one' TCG temporary; remove it.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211003004750.3608983-2-f4bug@amsat.org>
When a packet has 2 stores, either both commit or neither commit.
At the beginning of gen_commit_packet, we check for multiple stores.
If there are multiple stores, call a helper that will probe each of
them before proceeding with the commit.
Note that we don't call the probe helper for packets with only one
store. Therefore, we call process_store_log before anything else
involved in committing the packet.
We also fix a typo in the comment in process_store_log.
Test case added in tests/tcg/hexagon/hex_sigsegv.c
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <1633036599-7637-1-git-send-email-tsimpson@quicinc.com>
There is nothing target specific about this. The implementation
is host specific, but the declaration is 100% common.
Reviewed-By: Warner Losh <imp@bsdimp.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
[rth: Split out of a larger patch.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
the signal handler was not called.
Patch 1/2 fixes the Hexagon target
Patch 2/2 drops include qemu.h from target/hexagon/op_helper.c
**** Changes in v2 ****
Drop changes to linux-test.c due to intermittent failures on riscv
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Merge remote-tracking branch 'remotes/quic/tags/pull-hex-20210725' into staging
The Hexagon target was silently failing the SIGSEGV test because
the signal handler was not called.
Patch 1/2 fixes the Hexagon target
Patch 2/2 drops include qemu.h from target/hexagon/op_helper.c
**** Changes in v2 ****
Drop changes to linux-test.c due to intermittent failures on riscv
# gpg: Signature made Sun 25 Jul 2021 22:39:38 BST
# gpg: using RSA key 7B0244FB12DE4422
# gpg: Good signature from "Taylor Simpson (Rock on) <tsimpson@quicinc.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 3635 C788 CE62 B91F D4C5 9AB4 7B02 44FB 12DE 4422
* remotes/quic/tags/pull-hex-20210725:
target/hexagon: Drop include of qemu.h
Hexagon (target/hexagon) remove put_user_*/get_user_*
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The qemu.h file is a CONFIG_USER_ONLY header; it doesn't appear on
the include path for softmmu builds. Currently we include it
unconditionally in target/hexagon/op_helper.c. We used to need it
for the put_user_*() and get_user_*() functions, but now that we have
removed the uses of those from op_helper.c, the only reason it's
still there is that we're implicitly relying on it pulling in some
other headers.
Explicitly include the headers we need for other functions, and drop
the include of qemu.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210717103017.20491-1-peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Replace put_user_* with cpu_st*_data_ra
Replace get_user_* with cpu_ld*_data_ra
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <1626384156-6248-2-git-send-email-tsimpson@quicinc.com>
The hook is now unused, with breakpoints checked outside translation.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1622589584-22571-5-git-send-email-tsimpson@quicinc.com>
Previously the store-conditional code was writing to hex_pred[prednum].
Then, the fGEN_TCG override was reading from there to the destination
variable so that the packet commit logic would handle it properly.
The correct implementation is to write to the destination variable
and don't have the extra read in the override.
Remove the unused arguments from gen_store_conditional[48]
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1622589584-22571-4-git-send-email-tsimpson@quicinc.com>
Y4_l2fetch == l2fetch(Rs32, Rt32)
Y5_l2fetch == l2fetch(Rs32, Rtt32)
The semantics for these instructions are present, but the encodings
are missing.
Note that these are treated as nops in qemu, so we add overrides.
Test case added to tests/tcg/hexagon/misc.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1622589584-22571-3-git-send-email-tsimpson@quicinc.com>
Change fLSBNEW/fLSBNEW0/fLSBNEW1 from copy to "x & 1"
Remove gen_logical_not function
Clean up fLSBNEWNOT to use andi-1 followed by xori-1
Test cases added to tests/tcg/hexagon/misc.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1622589584-22571-2-git-send-email-tsimpson@quicinc.com>
We no longer have any runtime modifications to this struct,
so declare them all const.
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20210227232519.222663-3-richard.henderson@linaro.org>
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Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-6.1-pull-request' into staging
Trivial patches pull request 20210503
# gpg: Signature made Mon 03 May 2021 09:34:56 BST
# gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg: issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C
* remotes/vivier2/tags/trivial-branch-for-6.1-pull-request: (23 commits)
hw/rx/rx-gdbsim: Do not accept invalid memory size
docs: More precisely describe memory-backend-*::id's user
scripts: fix generation update-binfmts templates
docs/system: Document the removal of "compat" property for POWER CPUs
mc146818rtc: put it into the 'misc' category
Do not include exec/address-spaces.h if it's not really necessary
Do not include cpu.h if it's not really necessary
Do not include hw/boards.h if it's not really necessary
Do not include sysemu/sysemu.h if it's not really necessary
hw: Do not include qemu/log.h if it is not necessary
hw: Do not include hw/irq.h if it is not necessary
hw: Do not include hw/sysbus.h if it is not necessary
hw: Remove superfluous includes of hw/hw.h
ui: Fix memory leak in qemu_xkeymap_mapping_table()
hw/usb: Constify VMStateDescription
hw/display/qxl: Constify VMStateDescription
hw/arm: Constify VMStateDescription
vmstate: Constify some VMStateDescriptions
Fix typo in CFI build documentation
hw/pcmcia: Do not register PCMCIA type if not required
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Many files include qemu/log.h without needing it. Remove the superfluous
include statements.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210328054833.2351597-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The following instruction is added
S2_cabacdecbin Rdd32=decbin(Rss32,Rtt32)
Test cases added to tests/tcg/hexagon/misc.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-27-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rdd32 = add(Rss32, Rtt32, Px4):carry
Add with carry
Rdd32 = sub(Rss32, Rtt32, Px4):carry
Sub with carry
Test cases in tests/tcg/hexagon/multi_result.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-22-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rdd32,Pe4 = vminub(Rtt32, Rss32)
Vector min of bytes
Test cases in tests/tcg/hexagon/multi_result.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-21-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rxx32,Pe4 = vacsh(Rss32, Rtt32)
Add compare and select elements of two vectors
Test cases in tests/tcg/hexagon/multi_result.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-20-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rd32,Pe4 = sfinvsqrta(Rs32)
Square root approx
The helper packs the 2 32-bit results into a 64-bit value,
and the fGEN_TCG override unpacks them into the proper results.
Test cases in tests/tcg/hexagon/multi_result.c
FP exception tests added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-19-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rd32,Pe4 = sfrecipa(Rs32, Rt32)
Recripocal approx
Test cases in tests/tcg/hexagon/multi_result.c
FP exception tests added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-18-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Change #if HEX_DEBUG to if (HEX_DEBUG) so the debug code doesn't bit rot
Suggested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-17-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Suggested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-16-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Include size in declaration
Remove {0, 0} entry
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-15-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Change (cond ? (res = x) : (res = y)) to res = (cond ? x : y)
This makes the semnatics easier to for idef-parser to deal with
The following instructions are impacted
C2_any8
C2_all8
C2_mux
C2_muxii
C2_muxir
C2_muxri
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-14-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Taylor Simpson