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Diffstat (limited to 'doc/develop')
| -rw-r--r-- | doc/develop/crash_dumps.rst | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/doc/develop/crash_dumps.rst b/doc/develop/crash_dumps.rst index 18696372fc7..85030b4e360 100644 --- a/doc/develop/crash_dumps.rst +++ b/doc/develop/crash_dumps.rst @@ -5,7 +5,7 @@ Analyzing crash dumps ===================== When the CPU detects an instruction that it cannot execute it raises an -interrupt. U-Boot than writes a crash dump. This chapter describes how such +interrupt. U-Boot then writes a crash dump. This chapter describes how such dump can be analyzed. Creating a crash dump voluntarily @@ -46,8 +46,10 @@ QEMU:: resetting ... The first line provides us with the type of interrupt that occurred. -(On ARMv8 a synchronous abort is an exception where the return address stored -in the ESR register indicates the instruction that caused the exception.) +On ARMv8 a synchronous abort is an exception thrown when hitting an unallocated +instruction. The exception syndrome register ESR register contains information +describing the reason for the exception. Bit 25 set here indicates that a 32 bit +instruction led to the exception. The second line provides the contents of the elr and the lr register after subtracting the relocation offset. - U-Boot relocates itself after being |