qemu-e2k/target
Peter Maydell 4f57ef959c target/arm: Make VMOV scalar <-> gpreg beatwise for MVE
In a CPU with MVE, the VMOV (vector lane to general-purpose register)
and VMOV (general-purpose register to vector lane) insns are not
predicated, but they are subject to beatwise execution if they
are not in an IT block.

Since our implementation always executes all 4 beats in one tick,
this means only that we need to handle PSR.ECI:
 * we must do the usual check for bad ECI state
 * we must advance ECI state if the insn succeeds
 * if ECI says we should not be executing the beat corresponding
   to the lane of the vector register being accessed then we
   should skip performing the move

Note that if PSR.ECI is non-zero then we cannot be in an IT block.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-45-peter.maydell@linaro.org
2021-06-24 14:58:48 +01:00
..
alpha hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
arm target/arm: Make VMOV scalar <-> gpreg beatwise for MVE 2021-06-24 14:58:48 +01:00
avr hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
cris hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
hexagon hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
hppa target/hppa: Remove unused 'memory.h' header 2021-06-05 21:23:14 +02:00
i386 x86 queue, 2021-06-18 2021-06-21 11:26:04 +01:00
m68k softfloat: Introduce Floatx80RoundPrec 2021-06-03 14:04:02 -07:00
microblaze hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
mips target/mips: Fix 'Uncoditional' typo 2021-06-05 21:28:54 +02:00
nios2 target/nios2: fix page-fit instruction count 2021-06-05 21:17:10 +02:00
openrisc hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
ppc target/ppc: fix single-step exception regression 2021-06-03 18:10:31 +10:00
riscv target/riscv: rvb: add b-ext version cpu option 2021-06-08 09:59:46 +10:00
rx hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
s390x docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
sh4 hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
sparc docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
tricore hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
xtensa hw/core: Constify TCGCPUOps 2021-05-26 15:33:59 -07:00
meson.build Drop the deprecated unicore32 target 2021-05-12 18:20:52 +02:00