unicorn/qemu/target-arm
Peter Maydell 553e230088
target-arm: Raw CPSR writes should skip checks and bank switching
Raw CPSR writes should skip the architectural checks for whether
we're allowed to set the A or F bits and should also not do
the switching of register banks if the mode changes. Handle
this inside cpsr_write(), which allows us to drop the "manually
set the mode bits to avoid the bank switch" code from all the
callsites which are using CPSRWriteRaw.

This fixes a bug in 32-bit KVM handling where we had forgotten
the "manually set the mode bits" part and could thus potentially
trash the register state if the mode from the last exit to userspace
differed from the mode on this exit.

Backports commit f8c88bbcda76d5674e4bb125471371b41d330df8 from qemu
2018-02-20 22:17:48 -05:00
..
arm_ldst.h import 2015-08-21 15:04:50 +08:00
cpu-qom.h target-arm: Add the pmceid0 and pmceid1 registers 2018-02-20 15:22:41 -05:00
cpu.c target-arm: Add the pmceid0 and pmceid1 registers 2018-02-20 15:22:41 -05:00
cpu.h target-arm: Add write_type argument to cpsr_write() 2018-02-20 22:15:53 -05:00
cpu64.c target-arm: Add the pmceid0 and pmceid1 registers 2018-02-20 15:22:41 -05:00
crypto_helper.c target-arm: Clean up includes 2018-02-17 21:09:32 -05:00
helper-a64.c target-arm: Move aarch64_cpu_do_interrupt() to helper.c 2018-02-18 22:23:06 -05:00
helper-a64.h import 2015-08-21 15:04:50 +08:00
helper.c target-arm: Raw CPSR writes should skip checks and bank switching 2018-02-20 22:17:48 -05:00
helper.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
internals.h target-arm: Move get/set_r13_banked() to op_helper.c 2018-02-20 15:09:07 -05:00
iwmmxt_helper.c target-arm: Clean up includes 2018-02-17 21:09:32 -05:00
kvm-consts.h import 2015-08-21 15:04:50 +08:00
Makefile.objs delete sparc32_dma.h & arm-semi.c 2017-01-19 15:10:41 +08:00
neon_helper.c target-arm: Clean up includes 2018-02-17 21:09:32 -05:00
op_addsub.h import 2015-08-21 15:04:50 +08:00
op_helper.c target-arm: Raw CPSR writes should skip checks and bank switching 2018-02-20 22:17:48 -05:00
psci.c import 2015-08-21 15:04:50 +08:00
translate-a64.c target-arm: Add isread parameter to CPAccessFns 2018-02-20 11:24:17 -05:00
translate.c target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
translate.h tcg: Remove gen_intermediate_code_pc 2018-02-17 15:23:59 -05:00
unicorn.h arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
unicorn_aarch64.c target-arm: Add write_type argument to cpsr_write() 2018-02-20 22:15:53 -05:00
unicorn_arm.c target-arm: Add write_type argument to cpsr_write() 2018-02-20 22:15:53 -05:00