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Peter Maydell eb578a2394 nvic: Implement "user accesses BusFault" SCS region behaviour 
The ARMv7M architecture specifies that most of the addresses in the
PPB region (which includes the NVIC, systick and system registers)
are not accessible to unprivileged accesses, which should
BusFault with a few exceptions:
 * the STIR is configurably user-accessible
 * the ITM (which we don't implement at all) is always
   user-accessible

Implement this by switching the register access functions
to the _with_attrs scheme that lets us distinguish user
mode accesses.

This allows us to pull the handling of the CCR.USERSETMPEND
flag up to the level where we can make it generate a BusFault
as it should for non-permitted accesses.

Note that until the core ARM CPU code implements turning
MEMTX_ERROR into a BusFault the registers will continue to
act as RAZ/WI to user accesses.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 1501692241-23310-16-git-send-email-peter.maydell@linaro.org
 		2017-09-04 15:21:53 +01:00
..
9pfs 9pfs: fix dependencies 2017-08-30 18:23:25 +02:00
acpi docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
adc STM32F2xx: Add the ADC device 2016-10-04 13:28:07 +01:00
alpha alpha: replace cpu_alpha_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
arm arm: replace cpu_arm_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
audio pcspk: use QEMU_ALIGN_DOWN 2017-08-31 12:29:07 +02:00
block qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
bt bt: stop the sdp memory allocation craziness 2017-08-01 17:27:33 +02:00
char qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
core qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
cpu cpu: don't allow negative core id 2017-08-02 18:30:13 -03:00
cris cris: replace cpu_cris_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
display virtio-gpu: use DIV_ROUND_UP 2017-08-31 12:29:07 +02:00
dma trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
gpio qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable 2017-05-17 10:37:00 -03:00
i2c migration/next for 20170601 2017-06-02 14:07:53 +01:00
i386 i386: replace g_malloc()+memcpy() with g_memdup() 2017-08-31 12:29:07 +02:00
ide IDE: Do not flush empty CDROM drives 2017-08-10 14:33:43 +01:00
input qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
intc nvic: Implement "user accesses BusFault" SCS region behaviour 2017-09-04 15:21:53 +01:00
ipack ipack: Update e-mail address 2016-05-18 15:04:27 +03:00
ipmi qom: enforce readonly nature of link's check callback 2017-07-14 12:04:42 +02:00
isa trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
lm32 lm32: replace cpu_lm32_init() with cpu_generic_init() 2017-09-01 11:54:25 -03:00
m68k m68k: replace cpu_m68k_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
mem hw/ppc/spapr: Fix segfault when instantiating a 'pc-dimm' without 'memdev' 2017-08-22 21:26:46 +10:00
microblaze hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
mips mips: Add KVM T&E segment support for TCG 2017-08-02 22:18:06 +01:00
misc mmio-interface: Mark as not user creatable 2017-08-15 17:42:02 +01:00
moxie moxie: replace cpu_moxie_init() with cpu_generic_init() 2017-09-01 11:54:25 -03:00
net eepro100: replace g_malloc()+memcpy() with g_memdup() 2017-08-31 12:29:07 +02:00
nios2 nios2: replace cpu_nios2_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
nvram trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
openrisc openrisc: replace cpu_openrisc_init() with cpu_generic_init() 2017-09-01 11:54:25 -03:00
pci -----BEGIN PGP SIGNATURE----- 2017-08-31 15:52:43 +01:00
pci-bridge pci: Convert shpc_init() to Error 2017-07-03 22:29:49 +03:00
pci-host q35: use DIV_ROUND_UP 2017-08-31 12:29:07 +02:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc ppc: replace cpu_ppc_init() with cpu_generic_init() 2017-09-01 11:54:25 -03:00
s390x s390x/pci: fixup trap_msix() 2017-08-30 18:23:26 +02:00
scsi scsi: clarify sense codes for LUN0 emulation 2017-08-08 10:40:20 +02:00
sd trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
sh4 sh4: replace cpu_sh4_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
smbios stubs: move smbios stubs to hw/smbios 2017-01-16 17:52:35 +01:00
sparc sparc: replace cpu_sparc_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
sparc64 sparc: replace cpu_sparc_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
ssi xlnx-qspi: add a property for mmio-execution 2017-08-14 14:17:18 +01:00
timer i8254: use QEMU_ALIGN_DOWN 2017-08-31 12:29:07 +02:00
tpm clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
tricore tricore: replace cpu_tricore_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
unicore32 unicore32: replace uc32_cpu_init() with cpu_generic_init() 2017-09-01 11:54:25 -03:00
usb usb-hub: use DIV_ROUND_UP 2017-08-31 12:29:07 +02:00
vfio trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
virtio vhost: use QEMU_ALIGN_DOWN 2017-08-31 12:29:07 +02:00
watchdog watchdog/wdt_diag288: Mark diag288 watchdog as non-hotpluggable 2017-08-30 18:23:25 +02:00
xen trace-events: fix code style: %# -> 0x% 2017-08-01 12:13:07 +01:00
xenpv xenfb: remove xen_init_display "temporary" hack 2017-07-07 11:10:03 -07:00
xtensa xtensa: replace cpu_xtensa_init() with cpu_generic_init() 2017-09-01 11:54:24 -03:00
Makefile.objs 9pfs: fix dependencies 2017-08-30 18:23:25 +02:00