qemu-e2k/target
Richard Henderson 3b07a936d3 target/arm: Look up ARMCPRegInfo at runtime
Do not encode the pointer as a constant in the opcode stream.
This pointer is specific to the cpu that first generated the
translation, which runs into problems with both hot-pluggable
cpus and user-only threads, as cpus are removed. It's also a
potential correctness issue in the theoretical case of a
slightly-heterogenous system, because if CPU 0 generates a
TB and then CPU 1 executes it, CPU 1 will end up using CPU 0's
hash table, which might have a wrong set of registers in it.
(All our current systems are either completely homogenous,
M-profile, or have CPUs sufficiently different that they
wouldn't be sharing TBs anyway because the differences would
show up in the TB flags, so the correctness issue is only
theoretical, not practical.)

Perform the lookup in either helper_access_check_cp_reg,
or a new helper_lookup_cp_reg.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230106194451.1213153-3-richard.henderson@linaro.org
[PMM: added note in commit message about correctness issue]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-01-23 13:32:38 +00:00
..
alpha accel/tcg: Remove will_exit argument from cpu_restore_state 2022-11-01 08:31:41 +11:00
arm target/arm: Look up ARMCPRegInfo at runtime 2023-01-23 13:32:38 +00:00
avr target/avr: Convert to 3-phase reset 2022-12-16 15:58:15 +00:00
cris target/cris: Convert to 3-phase reset 2022-12-16 15:58:15 +00:00
hexagon Hexagon (target/hexagon) implement mutability mask for GPRs 2023-01-05 09:19:02 -08:00
hppa target/hppa: Fix fid instruction emulation 2022-12-19 23:14:06 +01:00
i386 Header cleanup patches for 2023-01-20 2023-01-20 13:17:55 +00:00
loongarch bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
m68k target/m68k: fix FPSR quotient byte for frem instruction 2023-01-16 09:47:31 +01:00
microblaze bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
mips bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
nios2 target/nios2: Convert to 3-phase reset 2022-12-16 15:58:15 +00:00
openrisc target/openrisc: Convert to 3-phase reset 2022-12-16 15:58:15 +00:00
ppc bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
riscv target/riscv: Remove helper_set_rod_rounding_mode 2023-01-20 10:14:14 +10:00
rx target/rx: Convert to 3-phase reset 2022-12-16 15:58:16 +00:00
s390x target/s390x: Restrict sysemu/reset.h to system emulation 2023-01-09 13:50:13 +01:00
sh4 target/sh4: Mask restore of env->flags from tb->flags 2022-12-18 09:36:07 -08:00
sparc bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
tricore bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
xtensa target/xtensa: Convert to 3-phase reset 2022-12-16 15:58:16 +00:00
Kconfig
meson.build