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xtensa: add backtrace link from syscall exception

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Signed-off-by: chenxiaoyi <chenxiaoyi@xiaomi.com>
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chenxiaoyi
2024-09-24 11:40:56 +08:00
committed by Xiang Xiao
parent 430c79ff89
commit 1757ecc5c1
1 changed files with 7 additions and 0 deletions
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arch/xtensa/src/common/xtensa_user_handler.S
+7
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@@ -282,6 +282,13 @@ _xtensa_syscall_handler:
ps_setup 1 a0 ps_setup 1 a0
/* Link the pre-exception frame for debugging. At this point, a12 points to the
* allocated and filled exception stack frame (old value of SP in case of
* an interrupt stack).
*/
exception_backtrace a12 1
movi ARG1, XTENSA_IRQ_SYSCALL /* Argument 1: IRQ number */ movi ARG1, XTENSA_IRQ_SYSCALL /* Argument 1: IRQ number */
mov ARG2, a12 /* Argument 2: Top of stack = register save area */ mov ARG2, a12 /* Argument 2: Top of stack = register save area */
CALL xtensa_irq_dispatch /* Call xtensa_int_decode */ CALL xtensa_irq_dispatch /* Call xtensa_int_decode */