[Bug 1863526] [NEW] NVIC CCR register not 8-bit accessible using Cortex-M4

[Philippe Mathieu-Daudé]

Public bug reported:

Head at commit b29c3e23f64938.

Running with '-d unimp,guest_errors -trace nvic\*' I get:

8871@1581892794.295746:nvic_sysreg_read NVIC sysreg read addr 0xd88 data 
0xf00000 size 4
8871@1581892794.295752:nvic_sysreg_write NVIC sysreg write addr 0xd88 data 
0xf00000 size 4
8871@1581892794.297780:nvic_sysreg_write NVIC sysreg write addr 0xd08 data 
0x4200 size 4
8871@1581892794.298040:nvic_sysreg_write NVIC sysreg write addr 0xd15 data 0x0 
size 1
NVIC: Bad write of size 1 at offset 0xd15
8871@1581892794.298081:nvic_sysreg_write NVIC sysreg write addr 0xd16 data 0x0 
size 1
NVIC: Bad write of size 1 at offset 0xd16
8871@1581892794.298116:nvic_sysreg_write NVIC sysreg write addr 0xd17 data 0x0 
size 1
NVIC: Bad write of size 1 at offset 0xd17
8871@1581892794.298156:nvic_sysreg_write NVIC sysreg write addr 0xd18 data 0x0 
size 1
8871@1581892794.298161:nvic_set_prio NVIC set irq 4 secure-bank 0 priority 0
8871@1581892794.298164:nvic_recompute_state NVIC state recomputed: vectpending 
0 vectpending_prio 256 exception_prio 256
8871@1581892794.298168:nvic_irq_update NVIC vectpending 0 pending prio 256 
exception_prio 256: setting irq line to 0
8871@1581892794.298201:nvic_sysreg_write NVIC sysreg write addr 0xd19 data 0x0 
size 1
8871@1581892794.298206:nvic_set_prio NVIC set irq 5 secure-bank 0 priority 0

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: arm nvic

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https://bugs.launchpad.net/bugs/1863526

Title:
  NVIC CCR register not 8-bit accessible using Cortex-M4

Status in QEMU:
  New

Bug description:
  Head at commit b29c3e23f64938.

  Running with '-d unimp,guest_errors -trace nvic\*' I get:

  8871@1581892794.295746:nvic_sysreg_read NVIC sysreg read addr 0xd88 data 
0xf00000 size 4
  8871@1581892794.295752:nvic_sysreg_write NVIC sysreg write addr 0xd88 data 
0xf00000 size 4
  8871@1581892794.297780:nvic_sysreg_write NVIC sysreg write addr 0xd08 data 
0x4200 size 4
  8871@1581892794.298040:nvic_sysreg_write NVIC sysreg write addr 0xd15 data 
0x0 size 1
  NVIC: Bad write of size 1 at offset 0xd15
  8871@1581892794.298081:nvic_sysreg_write NVIC sysreg write addr 0xd16 data 
0x0 size 1
  NVIC: Bad write of size 1 at offset 0xd16
  8871@1581892794.298116:nvic_sysreg_write NVIC sysreg write addr 0xd17 data 
0x0 size 1
  NVIC: Bad write of size 1 at offset 0xd17
  8871@1581892794.298156:nvic_sysreg_write NVIC sysreg write addr 0xd18 data 
0x0 size 1
  8871@1581892794.298161:nvic_set_prio NVIC set irq 4 secure-bank 0 priority 0
  8871@1581892794.298164:nvic_recompute_state NVIC state recomputed: 
vectpending 0 vectpending_prio 256 exception_prio 256
  8871@1581892794.298168:nvic_irq_update NVIC vectpending 0 pending prio 256 
exception_prio 256: setting irq line to 0
  8871@1581892794.298201:nvic_sysreg_write NVIC sysreg write addr 0xd19 data 
0x0 size 1
  8871@1581892794.298206:nvic_set_prio NVIC set irq 5 secure-bank 0 priority 0

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