diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-07-09 08:12:06 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-07-17 10:47:19 -0400 |
| commit | dd43272be1504f21cefde7a182cfe528c29b33d1 (patch) | |
| tree | a8907d06718639badd08c2a627c1e3cf721219a6 /doc | |
| parent | 76ae74d348a05c8c9deb718368a69ba05afd9784 (diff) | |
doc: correct description of crash dumps
Correct the description of the ESR register.
Fix a typo.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'doc')
| -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 18696372fc..85030b4e36 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 |