Ouss4 commented on a change in pull request #5729:
URL: https://github.com/apache/incubator-nuttx/pull/5729#discussion_r825341279
##########
File path: arch/xtensa/src/common/xtensa_context.S
##########
@@ -164,16 +161,28 @@ _xtensa_context_save:
#error Overlay support is not implemented
#endif
- s32i a0, a2, (4 * REG_TMP0) /* Save return address
*/
- s32i sp, a2, (4 * REG_TMP1) /* Save current stack
pointer */
- wsr a2, EXCSAVE_1 /*
Preserve register save area */
-
- l32i sp, a2, (4 * REG_A1) /* Restore the
interruptee's SP */
- call0 _xtensa_window_spill /* Preserves only
a4-a5, a8-a9, a12-a13 */
+ s32i a0, sp, (4 * REG_TMP0)
+ rsr a2, PS /* to be restored after
SPILL_ALL_WINDOWS */
+ movi a0, PS_INTLEVEL_MASK
+ and a3, a2, a0 /* get the current INTLEVEL */
+ bgeui a3, XCHAL_EXCM_LEVEL, 1f /* calculate max(INTLEVEL,
XCHAL_EXCM_LEVEL) */
+ movi a3, XCHAL_EXCM_LEVEL
+1:
+ movi a0, PS_UM | PS_WOE /* clear EXCM, enable window overflow,
set new INTLEVEL */
+ or a3, a3, a0
+ wsr a3, ps
+ rsync
+ rsr a0, EPC1 /* to be restored after
SPILL_ALL_WINDOWS */
+
+ addi sp, sp, XCPTCONTEXT_SIZE /* go back to spill register region
*/
+ SPILL_ALL_WINDOWS /* place the live register windows
there */
+ addi sp, sp, -XCPTCONTEXT_SIZE /* return the current stack pointer
and proceed with context save*/
+
+ wsr a2, PS /* restore to the value at entry */
+ wsr a0, EPC1 /* likewise */
+ rsync
+ l32i a0, sp, (4 * REG_TMP0)
Review comment:
I replaced all spaces with tabs in the whole file.
Some places like multiline comments are not possible to replace, so kept
them as they are.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
