diff options
| author | Silvan Jegen <s.jegen@gmail.com> | 2019-08-24 16:47:37 +0200 |
|---|---|---|
| committer | Silvan Jegen <s.jegen@gmail.com> | 2019-08-24 16:47:37 +0200 |
| commit | 6859d71bc3e4705bb54003488c42db3ad6211bfb (patch) | |
| tree | 4d785a4256e8927114520995574baa3f1e520e52 | |
| parent | 71809c8c794e22d80559671c06fa2e6db8e2df60 (diff) | |
setup_timer_irq: don't shift ISR address to the left
| -rw-r--r-- | software/first/setup_timer_irq.S | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/software/first/setup_timer_irq.S b/software/first/setup_timer_irq.S index 84ecde8..6d23c6d 100644 --- a/software/first/setup_timer_irq.S +++ b/software/first/setup_timer_irq.S @@ -9,8 +9,7 @@ setup_timer_irq: addi sp, sp, -16 # Allocate stack frame sw ra, 12(sp) # save return address to the stack - la t0, irq_handler # load address of irq_handler - slli t0, t0, 1 # shift address left by one; LSB will be 0 which is direct mode (what we want) + la t0, irq_handler # load address of irq_handler csrw mtvec, t0 # write handler address and mode # Here we cannot use csrsi because it can only set up to 5 bits |