1# frv testcase for sdiv $GRi,$GRj,$GRk 2# mach: all 3 4 .include "../testutils.inc" 5 6 start 7 8 .global sdiv 9sdiv: 10 ; simple division 12 / 3 11 set_gr_immed 3,gr3 12 set_gr_immed 12,gr1 13 sdiv gr1,gr3,gr2 14 test_gr_immed 4,gr2 15 16 ; Random example 17 set_gr_limmed 0x0123,0x4567,gr3 18 set_gr_limmed 0xfedc,0xba98,gr1 19 sdiv gr1,gr3,gr2 20 test_gr_immed -1,gr2 21 22 ; Special case from the Arch Spec Vol 2 23 or_spr_immed 0x20,isr ; turn on isr.edem 24 set_gr_immed -1,gr3 25 set_gr_limmed 0x8000,0x0000,gr1 26 sdiv gr1,gr3,gr2 27 test_gr_limmed 0x7fff,0xffff,gr2 28 test_spr_bits 0x4,2,1,isr ; isr.aexc is set 29 30 and_spr_immed -33,isr ; turn off isr.edem 31 ; set up exception handler 32 set_psr_et 1 33 and_spr_immed -4081,tbr ; clear tbr.tt 34 set_gr_spr tbr,gr17 35 inc_gr_immed 0x170,gr17 ; address of exception handler 36 set_bctrlr_0_0 gr17 37 set_spr_immed 128,lcr 38 set_gr_immed 0,gr15 39 40 ; divide will cause overflow 41 set_spr_addr ok1,lr 42 set_gr_immed -1,gr3 43 set_gr_limmed 0x8000,0x0000,gr1 44e1: sdiv gr1,gr3,gr2 ; overflow 45 test_gr_immed 1,gr15 46 test_gr_limmed 0x8000,0x0000,gr2; gr2 updated 47 48 ; divide by zero 49 set_spr_addr ok2,lr 50 set_gr_immed 0xdeadbeef,gr2 51e2: sdiv gr1,gr0,gr2 ; divide by zero 52 test_gr_immed 2,gr15 ; handler called 53 test_gr_immed 0xdeadbeef,gr2 ; gr2 not updated. 54 55 pass 56 57ok1: ; exception handler for overflow 58 test_spr_bits 0x18,3,0x2,isr ; isr.dtt is set 59 test_spr_bits 0x0001,0,0x1,esr0 ; esr0 is valid 60 test_spr_bits 0x003e,1,0x13,esr0 ; esr0.ec is set 61 inc_gr_immed 1,gr15 62 rett 0 63 fail 64 65ok2: ; exception handler for divide by zero 66 test_spr_bits 0x18,3,0x3,isr ; isr.dtt is set 67 test_spr_bits 0x0001,0,0x1,esr0 ; esr0 is valid 68 test_spr_bits 0x003e,1,0x13,esr0 ; esr0.ec is set 69 inc_gr_immed 1,gr15 70 rett 0 71 fail 72