From 190d9f8416b03a6b073d483ef181ee6fb3bad40d Mon Sep 17 00:00:00 2001 From: =?utf8?q?Sebastian=20B=C3=B8e?= Date: Wed, 15 Jun 2016 02:17:16 +0200 Subject: [PATCH] rv32ui: sh: Added side effect test (#14) From the test comment: sh to a word aligned address should only affect the 2 lower bytes and should leave the 2 upper bytes unmodified. In this test we write 2 bytes to the lower 2 bytes of the word tdat11 and then ensure that the both the upper 2 bytes and lower 2 bytes are as expected. --- isa/rv32ui/sh.S | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/isa/rv32ui/sh.S b/isa/rv32ui/sh.S index 387e181..6c47274 100644 --- a/isa/rv32ui/sh.S +++ b/isa/rv32ui/sh.S @@ -68,6 +68,23 @@ RVTEST_CODE_BEGIN TEST_ST_SRC21_BYPASS( 22, 1, 1, lh, sh, 0x0011, 8, tdat ); TEST_ST_SRC21_BYPASS( 23, 2, 0, lh, sh, 0x3001, 10, tdat ); + #--------------------------------------------------------------- + # Side effect tests + #--------------------------------------------------------------- + + # sh to a word aligned address should only affect the 2 lower bytes + # and should leave the 2 upper bytes unmodified. + # + # In this test we write 2 bytes to the lower 2 bytes of the word + # tdat11 and then ensure that the both the upper 2 bytes and + # lower 2 bytes are as expected. + TEST_CASE( 24, x3, 0x12343098, \ + la x1, tdat11; \ + li x2, 0x00003098; \ + sh x2, 0(x1); \ + lw x3, 0(x1); \ + ) + li a0, 0xbeef la a1, tdat sh a0, 6(a1) @@ -92,5 +109,6 @@ tdat7: .half 0xbeef tdat8: .half 0xbeef tdat9: .half 0xbeef tdat10: .half 0xbeef +tdat11: .word 0x12345678 RVTEST_DATA_END -- 2.30.2