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julius |
/*
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Basic l.sfxx comparison instruction tests.
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Does not cover set-flag-against-immediate
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Julius Baxter, ORSoC AB,
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*/
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//////////////////////////////////////////////////////////////////////
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//// ////
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//// Copyright (C) 2011 Authors and OPENCORES.ORG ////
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//// ////
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//// This source file may be used and distributed without ////
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//// restriction provided that this copyright statement is not ////
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//// removed from the file and that any derivative work contains ////
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//// the original copyright notice and the associated disclaimer. ////
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//// ////
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//// This source file is free software; you can redistribute it ////
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//// and/or modify it under the terms of the GNU Lesser General ////
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//// Public License as published by the Free Software Foundation; ////
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//// either version 2.1 of the License, or (at your option) any ////
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//// later version. ////
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//// ////
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//// This source is distributed in the hope that it will be ////
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//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
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//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
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//// PURPOSE. See the GNU Lesser General Public License for more ////
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//// details. ////
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//// ////
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//// You should have received a copy of the GNU Lesser General ////
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//// Public License along with this source; if not, download it ////
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//// from http://www.opencores.org/lgpl.shtml ////
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//// ////
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//////////////////////////////////////////////////////////////////////
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#include "spr-defs.h"
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/* =================================================== [ exceptions ] === */
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.section .vectors, "ax"
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/* ---[ 0x100: RESET exception ]----------------------------------------- */
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.org 0x100
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l.movhi r0, 0
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/* Clear status register */
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l.ori r1, r0, SPR_SR_SM
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l.mtspr r0, r1, SPR_SR
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/* Clear timer */
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l.mtspr r0, r0, SPR_TTMR
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/* Jump to program initialisation code */
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.global _start
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l.movhi r4, hi(_start)
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l.ori r4, r4, lo(_start)
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l.jr r4
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l.nop
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/* =================================================== [ text ] === */
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.section .text
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/* =================================================== [ start ] === */
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#define SHOULD_BE_SET l.bnf _fail
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#define SHOULDNT_BE_SET l.bf _fail
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#define MOVE_TO_R4R5_AND_REPORT(a,b) \
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l.movhi r3,hi(a) ; \
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l.ori r3,r3,lo(a) ; \
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l.nop 0x2 ; \
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l.or r4,r3,r3 ; \
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l.movhi r3,hi(b) ; \
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l.ori r3,r3,lo(b) ; \
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l.nop 0x2 ; \
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l.or r5,r3,r3
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// Tests to check these values should be less than
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#define SHOULD_BE_LESS_THAN_SIGNED(a,b) \
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MOVE_TO_R4R5_AND_REPORT(a,b) ; \
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l.sfeq r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfne r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfgts r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfges r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfles r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sflts r4,r5 ; \
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SHOULD_BE_SET
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#define SHOULD_BE_GREATER_THAN_SIGNED(a,b) \
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MOVE_TO_R4R5_AND_REPORT(a,b) ; \
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l.sfeq r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfne r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfgts r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfges r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfles r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sflts r4,r5 ; \
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SHOULDNT_BE_SET
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#define SHOULD_BE_LESS_THAN_UNSIGNED(a,b) \
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MOVE_TO_R4R5_AND_REPORT(a,b) ; \
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l.sfeq r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfne r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfgtu r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfgeu r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfleu r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfltu r4,r5 ; \
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SHOULD_BE_SET
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#define SHOULD_BE_GREATER_THAN_UNSIGNED(a,b) \
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MOVE_TO_R4R5_AND_REPORT(a,b) ; \
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l.sfeq r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfne r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfgtu r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfgeu r4,r5 ; \
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SHOULD_BE_SET ; \
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l.sfleu r4,r5 ; \
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SHOULDNT_BE_SET ; \
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l.sfltu r4,r5 ; \
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SHOULDNT_BE_SET
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#define INT_MAX 2147483647 /*0x7fffffff*/
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#define INT_MAX_MIN1 2147483646 /*0x7ffffffe*/
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#define NEG_INT_MAX -2147483648 /*0x80000000*/
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#define NEG_INT_MAX_PL1 -2147483647 /*0x80000001*/
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#define MIN1 -1 /*0xffffffff*/
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#define UINT_MAX 4294967295 /*0xffffffff*/
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#define UINT_MAX_MIN1 4294967294 /*0xfffffffe*/
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.global _start
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_start:
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/* Signed tests */
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SHOULD_BE_LESS_THAN_SIGNED(0,1)
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SHOULD_BE_LESS_THAN_SIGNED(MIN1,0)
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SHOULD_BE_LESS_THAN_SIGNED(INT_MAX_MIN1,INT_MAX)
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SHOULD_BE_LESS_THAN_SIGNED(NEG_INT_MAX,INT_MAX)
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SHOULD_BE_LESS_THAN_SIGNED(NEG_INT_MAX,INT_MAX_MIN1)
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SHOULD_BE_LESS_THAN_SIGNED(NEG_INT_MAX_PL1,INT_MAX)
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SHOULD_BE_LESS_THAN_SIGNED(NEG_INT_MAX_PL1,INT_MAX_MIN1)
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SHOULD_BE_LESS_THAN_SIGNED(-7,-6)
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SHOULD_BE_LESS_THAN_SIGNED(NEG_INT_MAX,NEG_INT_MAX_PL1)
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SHOULD_BE_LESS_THAN_SIGNED(NEG_INT_MAX,MIN1)
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SHOULD_BE_LESS_THAN_SIGNED(NEG_INT_MAX,0)
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SHOULD_BE_GREATER_THAN_SIGNED(1,0)
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SHOULD_BE_GREATER_THAN_SIGNED(0,MIN1)
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SHOULD_BE_GREATER_THAN_SIGNED(INT_MAX,INT_MAX_MIN1)
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SHOULD_BE_GREATER_THAN_SIGNED(INT_MAX,NEG_INT_MAX)
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SHOULD_BE_GREATER_THAN_SIGNED(INT_MAX_MIN1,NEG_INT_MAX)
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SHOULD_BE_GREATER_THAN_SIGNED(INT_MAX,NEG_INT_MAX_PL1)
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SHOULD_BE_GREATER_THAN_SIGNED(INT_MAX_MIN1,NEG_INT_MAX_PL1)
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SHOULD_BE_GREATER_THAN_SIGNED(-6,-7)
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SHOULD_BE_GREATER_THAN_SIGNED(NEG_INT_MAX_PL1,NEG_INT_MAX)
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SHOULD_BE_GREATER_THAN_SIGNED(MIN1,NEG_INT_MAX)
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SHOULD_BE_GREATER_THAN_SIGNED(0,NEG_INT_MAX)
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/* Unsigned tests */
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SHOULD_BE_LESS_THAN_UNSIGNED(0,1)
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SHOULD_BE_LESS_THAN_UNSIGNED(UINT_MAX_MIN1,UINT_MAX)
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SHOULD_BE_GREATER_THAN_UNSIGNED(1,0)
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SHOULD_BE_GREATER_THAN_UNSIGNED(UINT_MAX,UINT_MAX_MIN1)
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_finish:
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l.movhi r3, hi(0x8000000d)
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l.ori r3, r3, lo(0x8000000d)
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l.nop 0x2
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l.ori r3, r0, 0
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l.nop 0x1
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_fail:
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l.ori r3, r0, 0x1
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l.nop 0x1
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