Subversion Repositories openrisc

# frv testcase for udiv $GRi,$GRj,$GRk
# mach: frv fr500 fr400

        .include "testutils.inc"

        start

        .global udiv
udiv:
        ; simple division 12 / 3
        set_gr_immed    0x00000003,gr2
        set_gr_immed    0x0000000c,gr3
        udiv            gr3,gr2,gr3
        test_gr_immed   0x00000003,gr2
        test_gr_immed   0x00000004,gr3

        ; example 1 from udiv in the fr30 manual
        set_gr_limmed   0x0123,0x4567,gr2
        set_gr_limmed   0xfedc,0xba98,gr3
        udiv            gr3,gr2,gr3
        test_gr_limmed  0x0123,0x4567,gr2
        test_gr_immed   0x000000e0,gr3

        ; set up exception handler
        set_psr_et      1
        and_spr_immed   -4081,tbr       ; clear tbr.tt
        set_gr_spr      tbr,gr17
        inc_gr_immed    0x170,gr17      ; address of exception handler
        set_bctrlr_0_0  gr17
        set_spr_immed   128,lcr
        set_gr_immed    0,gr15

        ; divide by zero
        set_spr_addr    ok1,lr
        set_gr_addr     e1,gr17
e1:     udiv            gr1,gr0,gr2     ; divide by zero
        test_gr_immed   1,gr15

        pass

ok1:    ; exception handler for divide by zero
        test_spr_bits   0x18,3,0x1,isr          ; isr.dtt is set
        test_spr_gr     epcr0,gr17              ; return address set
        test_spr_bits   0x0001,0,0x1,esr0       ; esr0 is valid
        test_spr_bits   0x003e,1,0x13,esr0      ; esr0.ec is set
        inc_gr_immed    1,gr15
        rett            0
        fail