diff options
| author | Eric Yilun Lin <yllin@chromium.org> | 2021-01-11 12:13:50 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-01-11 07:09:56 +0000 |
| commit | 6625f7173bcb4f33a1c92b549fa82b6c6e026664 (patch) | |
| tree | 19b5666e9b8cf1151071abbb19849b49b65be014 | |
| parent | a0ec62ec5a7009c6b5a3507eae8615e674d1567b (diff) | |
| download | chrome-ec-6625f7173bcb4f33a1c92b549fa82b6c6e026664.tar.gz | |
cortex-m/m0: uses BL reg as SW PANIC info
This provides more information when we hit the div_by_zero
exception, since the register dump in panic info might be missing
sometimes.
BUG=b:177091249
TEST=crash divzero, and see the R5 provides BL reg
BRANCH=none
Change-Id: Icf617a01f0d93d1997812e9d8d44d4489f6a418a
Signed-off-by: Eric Yilun Lin <yllin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2620723
Reviewed-by: Tzung-Bi Shih <tzungbi@chromium.org>
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
| -rw-r--r-- | third_party/libaeabi-cortexm0/core/cortex-m/uldivmod.S | 1 | ||||
| -rw-r--r-- | third_party/libaeabi-cortexm0/core/cortex-m0/div.S | 1 | ||||
| -rw-r--r-- | third_party/libaeabi-cortexm0/core/cortex-m0/uldivmod.S | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/third_party/libaeabi-cortexm0/core/cortex-m/uldivmod.S b/third_party/libaeabi-cortexm0/core/cortex-m/uldivmod.S index da60793e67..63f060891b 100644 --- a/third_party/libaeabi-cortexm0/core/cortex-m/uldivmod.S +++ b/third_party/libaeabi-cortexm0/core/cortex-m/uldivmod.S @@ -176,4 +176,5 @@ L_done_sub4: __aeabi_ldiv0: ldr SOFTWARE_PANIC_REASON_REG, =PANIC_SW_DIV_ZERO + mov SOFTWARE_PANIC_INFO_REG, r14 bl exception_panic diff --git a/third_party/libaeabi-cortexm0/core/cortex-m0/div.S b/third_party/libaeabi-cortexm0/core/cortex-m0/div.S index 898ecafe83..06dc7afacb 100644 --- a/third_party/libaeabi-cortexm0/core/cortex-m0/div.S +++ b/third_party/libaeabi-cortexm0/core/cortex-m0/div.S @@ -163,4 +163,5 @@ L_dont_sub0: __aeabi_idiv0: ldr SOFTWARE_PANIC_REASON_REG, =PANIC_SW_DIV_ZERO + mov SOFTWARE_PANIC_INFO_REG, r14 bl exception_panic diff --git a/third_party/libaeabi-cortexm0/core/cortex-m0/uldivmod.S b/third_party/libaeabi-cortexm0/core/cortex-m0/uldivmod.S index 269645268b..6c0a469d65 100644 --- a/third_party/libaeabi-cortexm0/core/cortex-m0/uldivmod.S +++ b/third_party/libaeabi-cortexm0/core/cortex-m0/uldivmod.S @@ -174,4 +174,5 @@ L_dont_sub4: __aeabi_ldiv0: ldr SOFTWARE_PANIC_REASON_REG, =PANIC_SW_DIV_ZERO + mov SOFTWARE_PANIC_INFO_REG, r14 bl exception_panic |