(This is 2.11 material, obviously, but it's a coherent and large enough set of patches that I figured I might as well push it out for review now.)
This patchset is a collection of cleanups, bugfixes, etc to the existing v7M code which are either necessary preliminary to implementing v8M or just things I noticed along the way. The non-trivial stuff is: * migration for M profile is shifted to not use read_cpsr() and write_cpsr() which assume A profile semantics (back compatibility with old migration state is maintained) * we implement the "user accesses should BusFault" behaviour for the memory mapped registers in the SCS, though this won't actually kick in until we turn MEMTX_ERROR into a BusFault (I have patches for that) thanks -- PMM Peter Maydell (15): target/arm: Use MMUAccessType enum rather than int target/arm: Don't trap WFI/WFE for M profile target/arm: Consolidate PMSA handling in get_phys_addr() target/arm: Tighten up Thumb decode where new v8M insns will be hw/intc/armv7m_nvic.c: Remove out of date comment target/arm: Remove incorrect comment about MPU_CTRL target/arm: Fix outdated comment about exception exit target/arm: Define and use XPSR bit masks target/arm: Don't store M profile PRIMASK and FAULTMASK in daif target/arm: Don't use cpsr_write/cpsr_read to transfer M profile XPSR target/arm: Make arm_cpu_dump_state() handle the M-profile XPSR target/arm: Don't calculate lr in arm_v7m_cpu_do_interrupt() until needed target/arm: Create and use new function arm_v7m_is_handler_mode() armv7m_nvic.h: Move from include/hw/arm to include/hw/intc nvic: Implement "user accesses BusFault" SCS region behaviour hw/intc/armv7m_nvic.c | 68 +++++++++++------- include/hw/arm/armv7m.h | 2 +- include/hw/{arm => intc}/armv7m_nvic.h | 0 target/arm/cpu.c | 5 -- target/arm/cpu.h | 54 ++++++++++---- target/arm/helper.c | 124 ++++++++++++++++----------------- target/arm/internals.h | 3 +- target/arm/machine.c | 54 +++++++++++++- target/arm/op_helper.c | 5 ++ target/arm/translate.c | 106 +++++++++++++++++++++------- 10 files changed, 286 insertions(+), 135 deletions(-) rename include/hw/{arm => intc}/armv7m_nvic.h (100%) -- 2.7.4