rustv32i/tests/check/branch.S
2025-03-09 17:50:08 +01:00

68 lines
1.1 KiB
ArmAsm

# Control transfer instructions
#include "../helper.S"
START_TEST
j unconditional
FAIL
unconditional:
# Test branching instructions
li t0, 10
li t1, 10
beq t0, t1, branch2
FAIL
branch2:
bge t0, t1, branch3
FAIL
branch3:
bne t0, t1, fail
blt t0, t1, fail
bltu t0, t1, fail
li t0, -1
li t1, 1
blt t1, t0, fail
bltu t0, t1, fail
bge t0, t1, fail
bgeu t1, t0, fail
blt t0, t1, branch4
FAIL
branch4:
bltu t1, t0, branch5
FAIL
branch5:
bge t1, t0, branch6
FAIL
branch6:
bgeu t0, t1, branch7
FAIL
branch7:
# Test link registers being set correctly:
auipc t1, 0
jal t0, link2
j fail
link2:
addi t1, t1, 8 # the instruction following the jump
bne t1, t0, fail
auipc t1, 0
jalr t0, 12(t1) # 12 is the three instructions, so to the addi
j fail
addi t1, t1, 8 # the instruction following the jump
bne t0, t1, fail
# Test a loop (t0=counter, t1=expected)
li t0, 0
li t1, 100
loop1:
addi t0, t0, 1
blt t0, t1, loop1
ASSERT_EQ t0, 100
# End
PASS