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author | Clifford Wolf <clifford@clifford.at> | 2017-02-09 15:15:46 +0100 |
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committer | Clifford Wolf <clifford@clifford.at> | 2017-02-09 15:15:46 +0100 |
commit | 42b4397390aba11ae79d761a7317ebda9da489f4 (patch) | |
tree | f12536f2e6d79ec48c28118b448e263d68ad06aa /scripts/presyn/firmware.S | |
parent | a2107ed4ffa72b48a15c67459adf8fbe576cbcab (diff) | |
download | picorv32-42b4397390aba11ae79d761a7317ebda9da489f4.tar.gz picorv32-42b4397390aba11ae79d761a7317ebda9da489f4.zip |
Add scripts/presyn/ example
Diffstat (limited to 'scripts/presyn/firmware.S')
-rw-r--r-- | scripts/presyn/firmware.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/scripts/presyn/firmware.S b/scripts/presyn/firmware.S new file mode 100644 index 0000000..ec5caaa --- /dev/null +++ b/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 |