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unicorn/qemu/target/arm
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Peter Maydell a897ee919b
target-arm: v7M: ignore writes to CONTROL.SPSEL from Thread mode 
For v7M, writes to the CONTROL register are only permitted for
privileged code. However even if the code is privileged, the
write must not affect the SPSEL bit in the CONTROL register
if the CPU is in Thread mode (as documented in the pseudocode
for the MSR instruction). Implement this, instead of permitting
SPSEL to be written in all cases.

This was causing mbed applications not to run, because the
RTX RTOS they use relies on this behaviour.

Backports commit 792dac309c8660306557ba058b8b5a6a75ab3c1f from qemu
2018-03-04 13:04:20 -05:00
..
arm-powerctl.c ARM: Factor out ARM on/off PSCI control functions 2018-03-01 23:31:47 -05:00
arm-powerctl.h ARM: Factor out ARM on/off PSCI control functions 2018-03-01 23:31:47 -05:00
arm_ldst.h Fix Thumb-1 BE32 execution and disassembly. 2018-03-02 00:20:11 -05:00
cpu-qom.h Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
cpu.c target/arm: Don't store M profile PRIMASK and FAULTMASK in daif 2018-03-04 12:56:29 -05:00
cpu.h target/arm: Don't store M profile PRIMASK and FAULTMASK in daif 2018-03-04 12:56:29 -05:00
cpu64.c target-arm: Enable EL2 feature bit on A53 and A57 2018-03-01 23:36:44 -05:00
crypto_helper.c Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
helper-a64.c Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
helper-a64.h Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
helper.c target-arm: v7M: ignore writes to CONTROL.SPSEL from Thread mode 2018-03-04 13:04:20 -05:00
helper.h Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
internals.h target/arm: Use MMUAccessType enum rather than int 2018-03-04 12:45:56 -05:00
iwmmxt_helper.c Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
kvm-consts.h arm: better stub version for MISMATCH_CHECK 2018-03-02 00:13:45 -05:00
Makefile.objs ARM: Factor out ARM on/off PSCI control functions 2018-03-01 23:31:47 -05:00
neon_helper.c Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
op_addsub.h Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
op_helper.c target/arm: Don't trap WFI/WFE for M profile 2018-03-04 12:46:37 -05:00
psci.c target/arm/psci.c: If EL2 implemented, start CPUs in EL2 2018-03-01 23:34:57 -05:00
translate-a64.c target/arm: Require alignment for load exclusive 2018-03-04 01:53:04 -05:00
translate.c target/arm: Make arm_cpu_dump_state() handle the M-profile XPSR 2018-03-04 12:58:56 -05:00
translate.h tcg: Pass generic CPUState to gen_intermediate_code() 2018-03-03 23:34:18 -05:00
unicorn.h Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
unicorn_aarch64.c Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
unicorn_arm.c Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00