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→struct DebugEventInfo
Line 994:
Line 994:
! Argument
| register storage
| register storage
| register storage
| register storage
| (None)
| (None)
| User break type
| (None)
| Attempted syscall ID
VFP exceptions aren't signaled?+The register storage layout is as follows (referring to user-mode registers): r0-r12, sp, <event-signaling exception handler>, lr_svc, lr, pc (misadjusted for Thumb instructions), cpsr.+
+
+
| Exception address
| Exception address
|-
|-
−| u32
+| u32[4]
−| Argument (type-specific)
+| Type-specific data, see below
|}
|}
+
+The register storage layout for CPU exceptions is as follows (referring to user-mode registers): r0-r12, sp, <event-signaling exception handler>, lr_svc, lr, pc (misadjusted for Thumb instructions), cpsr. (????)
Exception types:
Exception types:
{| class="wikitable" border="1"
{| class="wikitable" border="1"
−! Reason
+! Exception type
! Id
! Id
−|-
|-
| UNDEFINED INSTRUCTION
| UNDEFINED INSTRUCTION
| 0
| 0
−|-
|-
| PREFETCH ABORT
| PREFETCH ABORT
| 1
| 1
−|-
|-
| DATA ABORT
| DATA ABORT
| 2
| 2
−|-
|-
| UNALIGNED DATA ACCESS
| UNALIGNED DATA ACCESS
| 3
| 3
−|-
|-
| ATTACH BREAK
| ATTACH BREAK
| 4
| 4
−|-
|-
−| SVC STOP POINT
+| STOP POINT
| 5
| 5
−|-
|-
| USER BREAK
| USER BREAK
| 6
| 6
−|-
|-
| DEBUGGER BREAK
| DEBUGGER BREAK
| 7
| 7
−|-
|-
| UNDEFINED SYSCALL
| UNDEFINED SYSCALL
| 8
| 8
−|}
|}
−"SVC stop point" is svc 0xFF.
+For UNDEFINED INSTRUCTION/PREFETCH ABORT/DATA ABORT/UNALIGNED DATA ACCESS/UNDEFINED SYSCALL:
−{| class="wikitable" border="1"
+! Type
+! Field
+|-
+| u32
+| Fault information: Fault Address Register (for DATA ABORT and UNALIGNED DATA ACCESS),
+attempted SVC ID (for UNDEFINED SYSCALL), otherwise 0
+|}
−For STOP POINT:
+{| class="wikitable" border="1"
+! Type
+! Field
+|-
+| u32
+| Stop point type that caused the event: 0 = svc 0xFF, 1 = breakpoint, 2 = watchpoint
+|-
+| u32
+| Fault information: always zero in this case
+|}
+For USER BREAK:
+{| class="wikitable" border="1"
+! Type
+! Field
+|-
+| u32
+| Break reason
+|-
+| u32[2]
+| User-provided parameters for debug reasons, or 0
+|}
+For DEBUGGER BREAK:
+{| class="wikitable" border="1"
+! Type
+! Field
+|-
+| [[KThread]]*[nbCores]
+| Pointers to the current threads at the time svcBreakDebugProcess was called
+|}
User break types:
User break types:
Line 1,059:
Line 1,089:
| USER
| USER
| 2
| 2
+|-
+| DEBUG_ASSERT
+| 3
+|-
+| DEBUG_USER
+| 4
|}
|}