diff options
Diffstat (limited to 'picorv32/scripts/presyn/firmware.S')
-rw-r--r-- | picorv32/scripts/presyn/firmware.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/picorv32/scripts/presyn/firmware.S b/picorv32/scripts/presyn/firmware.S new file mode 100644 index 0000000..ec5caaa --- /dev/null +++ b/picorv32/scripts/presyn/firmware.S @@ -0,0 +1,47 @@ +.section .init +.global main + +entry: + +/* zero-initialize all registers */ +addi x1, zero, 0 +addi x2, zero, 0 +addi x3, zero, 0 +addi x4, zero, 0 +addi x5, zero, 0 +addi x6, zero, 0 +addi x7, zero, 0 +addi x8, zero, 0 +addi x9, zero, 0 +addi x10, zero, 0 +addi x11, zero, 0 +addi x12, zero, 0 +addi x13, zero, 0 +addi x14, zero, 0 +addi x15, zero, 0 +addi x16, zero, 0 +addi x17, zero, 0 +addi x18, zero, 0 +addi x19, zero, 0 +addi x20, zero, 0 +addi x21, zero, 0 +addi x22, zero, 0 +addi x23, zero, 0 +addi x24, zero, 0 +addi x25, zero, 0 +addi x26, zero, 0 +addi x27, zero, 0 +addi x28, zero, 0 +addi x29, zero, 0 +addi x30, zero, 0 +addi x31, zero, 0 + +/* set stack pointer */ +lui sp, %hi(16*1024) +addi sp, sp, %lo(16*1024) + +/* call main */ +jal ra, main + +/* break */ +ebreak |