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| author | Yunsup Lee <yunsup@cs.berkeley.edu> | 2013-04-22 14:56:59 -0700 |
|---|---|---|
| committer | Yunsup Lee <yunsup@cs.berkeley.edu> | 2013-04-22 14:56:59 -0700 |
| commit | 81ad66f25ce4c15180e558696961bd8eaf967fea (patch) | |
| tree | d70676fb1d11a4a66a268f7860d3ef7d469987fe /isa/rv64uf/structural.S | |
| download | riscv-tests-81ad66f25ce4c15180e558696961bd8eaf967fea.zip riscv-tests-81ad66f25ce4c15180e558696961bd8eaf967fea.tar.gz riscv-tests-81ad66f25ce4c15180e558696961bd8eaf967fea.tar.bz2 | |
initial commit
Diffstat (limited to 'isa/rv64uf/structural.S')
| -rw-r--r-- | isa/rv64uf/structural.S | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/isa/rv64uf/structural.S b/isa/rv64uf/structural.S new file mode 100644 index 0000000..0c74ab5 --- /dev/null +++ b/isa/rv64uf/structural.S @@ -0,0 +1,56 @@ +#***************************************************************************** +# structural.S +#----------------------------------------------------------------------------- +# +# This test verifies that the FPU correctly obviates structural hazards on its +# writeback port (e.g. fadd followed by fsgnj) +# + +#include "riscv_test.h" +#include "test_macros.h" + +RVTEST_RV64U +RVTEST_CODE_BEGIN + +li x25, 1 + +li x2, 0x3FF0000000000000 +li x1, 0x3F800000 + +#define TEST(nops, errcode) \ + mxtf.d f4, x0 ;\ + mxtf.s f3, x0 ;\ + mxtf.d f2, x2 ;\ + mxtf.s f1, x1 ;\ + b 1f ;\ + .align 5 ;\ +1:fmul.d f4, f2, f2 ;\ + nops ;\ + fsgnj.s f3, f1, f1 ;\ + mftx.d x4, f4 ;\ + mftx.s x3, f3 ;\ + beq x1, x3, 2f ;\ + RVTEST_FAIL ;\ +2:beq x2, x4, 2f ;\ + RVTEST_FAIL; \ +2:mxtf.d f2, zero ;\ + mxtf.s f1, zero ;\ + +TEST(;,2) +TEST(nop,4) +TEST(nop;nop,6) +TEST(nop;nop;nop,8) +TEST(nop;nop;nop;nop,10) +TEST(nop;nop;nop;nop;nop,12) +TEST(nop;nop;nop;nop;nop;nop,14) + +RVTEST_PASS + +RVTEST_CODE_END + + .data +RVTEST_DATA_BEGIN + + TEST_DATA + +RVTEST_DATA_END |