From 81ad66f25ce4c15180e558696961bd8eaf967fea Mon Sep 17 00:00:00 2001 From: Yunsup Lee Date: Mon, 22 Apr 2013 14:56:59 -0700 Subject: initial commit --- isa/rv64uf/structural.S | 56 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 isa/rv64uf/structural.S (limited to 'isa/rv64uf/structural.S') 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 -- cgit v1.1