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author | Clifford Wolf <clifford@clifford.at> | 2016-10-24 16:53:34 +0200 |
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committer | Clifford Wolf <clifford@clifford.at> | 2016-10-24 16:53:34 +0200 |
commit | 63af54702c182ca422eb8189d5745add893f613d (patch) | |
tree | 76128467144c9767c44e3a006f8881732b94e8cb /scripts/tomthumbtg/start.S | |
parent | f79c8344fe4d28bc9dce3952fffb7867ff242904 (diff) | |
download | picorv32-63af54702c182ca422eb8189d5745add893f613d.tar.gz picorv32-63af54702c182ca422eb8189d5745add893f613d.zip |
Improved tomthumbtestgen
Diffstat (limited to 'scripts/tomthumbtg/start.S')
-rw-r--r-- | scripts/tomthumbtg/start.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/scripts/tomthumbtg/start.S b/scripts/tomthumbtg/start.S new file mode 100644 index 0000000..541c8a4 --- /dev/null +++ b/scripts/tomthumbtg/start.S @@ -0,0 +1,57 @@ +.section .text.start +.global testcollection + +/* 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(64*1024) +addi sp, sp, %lo(64*1024) + +/* push zeros on the stack for argc and argv */ +/* (stack is aligned to 16 bytes in riscv calling convention) */ +addi sp,sp,-16 +sw zero,0(sp) +sw zero,4(sp) +sw zero,8(sp) +sw zero,12(sp) + +/* call test */ +call testcollection + +/* write test results */ +lui x1, %hi(0x10000000) +addi x1, x1, %lo(0x10000000) +sw x5, 0(x1) + +ebreak |