diff options
Diffstat (limited to 'core/riscv-rv32i/init.S')
| -rw-r--r-- | core/riscv-rv32i/init.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/core/riscv-rv32i/init.S b/core/riscv-rv32i/init.S index eee72503d3..f81890bd5e 100644 --- a/core/riscv-rv32i/init.S +++ b/core/riscv-rv32i/init.S @@ -165,6 +165,10 @@ __irq_isr: bltu sp, t0, __sp_16byte_aligned mv sp, t0 __sp_16byte_aligned: + /* in_interrupt = 1 */ + li t0, 1 + la t1, in_interrupt + sb t0, 0(t1) /* * This ensures sp is 16-byte aligned. This only applies to when there * is an interrupt before tasks start. Otherwise stack_end is already @@ -212,6 +216,9 @@ __irq_handler: .global __irq_exit __irq_exit: jal end_irq_handler + /* in_interrupt = 0 */ + la t0, in_interrupt + sb zero, 0(t0) /* restore sp from scratch register */ csrr sp, mscratch #ifdef CONFIG_FPU |