Subversion Repositories openrisc

; Copied from fr30 and modified.
; r9, r11-r13 are used as tmps, consider them call clobbered by these macros.
;
; Do not use the macro counter \@ in macros, there's a bug in
; gas 2.9.1 when it is also a line-separator.
;

        ; Don't require the $-prefix on registers.
        .syntax no_register_prefix

        .macro startnostack
        .data
        .space 64,0 ; Simple stack
stackhi:
failmsg:
        .ascii "fail\n"
passmsg:
        .ascii "pass\n"
        .text
        break 11
        .global _start
_start:
        .endm

        .macro start
        startnostack
        move.d stackhi,sp
        .endm

; Exit with return code
        .macro exit rc
        move.d \rc,r10
        moveq 1,r9      ; == __NR_exit
        break 13
        break 15
        .endm

; Pass the test case
        .macro pass
        moveq 5,r12
        move.d passmsg,r11
        move.d 1,r10
        moveq 4,r9      ; == __NR_write
        break 13
        exit 0
        .endm

; Fail the testcase
        .macro fail
;       moveq 5,r12
;       move.d failmsg,r11
;       move.d 1,r10
;       moveq 4,r1
;       break 13
;       exit 1
        break 15
        .endm

        .macro quit
        break 15
        .endm

        .macro dumpr3
        break 14
        .endm

; Load an immediate value into a general register
; TODO: use minimal sized insn
        .macro mvi_h_gr val reg
        move.d \val,\reg
        .endm

; Load an immediate value into a dedicated register
        .macro mvi_h_dr val reg
        move.d \val,r9
        move.d r9,\reg
        .endm

; Load a general register into another general register
        .macro mvr_h_gr src targ
        move.d \src,\targ
        .endm

; Store an immediate into a word in memory
        .macro mvi_h_mem val addr
        mvi_h_gr  \val r11
        mvr_h_mem r11,\addr
        .endm

; Store a register into a word in memory
        .macro mvr_h_mem reg addr
        move.d \addr,$r13
        move.d \reg,[$r13]
        .endm

; Store the current ps on the stack
        .macro save_ps
        .if ..asm.arch.cris.v32
        move ccs,acr ; Push will do a "subq" first.
        push acr
        .else
        push dccr
        .endif
        .endm

; Load a word value from memory
        .macro ldmem_h_gr addr reg
        move.d \addr,$r13
        move.d [$r13],\reg
        .endm

; Add 2 general registers
        .macro add_h_gr reg1 reg2
        add.d \reg1,\reg2
        .endm

; Increment a register by and immediate
        .macro inci_h_gr inc reg
        mvi_h_gr \inc,r11
        add.d r11,\reg
        .endm

; Test the value of an immediate against a general register
        .macro test_h_gr val reg
        cmp.d \val,\reg
        beq 9f
        nop
        fail
9:
        .endm

; compare two general registers
        .macro testr_h_gr reg1 reg2
        cmp.d \reg1,\reg2
        beq 9f
        fail
9:
        .endm

; Test the value of an immediate against a dedicated register
        .macro test_h_dr val reg
        move \reg,$r12
        test_h_gr \val $r12
        .endm

; Test the value of an general register against a dedicated register
        .macro testr_h_dr gr dr
        move \dr,$r12
        testr_h_gr \gr $r12
        .endm

; Compare an immediate with word in memory
        .macro test_h_mem val addr
        ldmem_h_gr \addr $r12
        test_h_gr \val $r12
        .endm

; Compare a general register with word in memory
        .macro testr_h_mem reg addr
        ldmem_h_gr \addr r12
        testr_h_gr \reg r12
        .endm

; Set the condition codes
; The lower bits of the mask *are* nzvc, so we don't
; have to do anything strange.
        .macro set_cc mask
        move.w \mask,r13
        .if ..asm.arch.cris.v32
        move r13,ccs
        .else
        move r13,ccr
        .endif
        .endm

; Set the stack mode
;        .macro set_s_user
;        orccr  0x20
;        .endm
;
;        .macro set_s_system
;        andccr 0x1f
;        .endm
;
;; Test the stack mode
;        .macro test_s_user
;        mvr_h_gr ps,r9
;        mvi_h_gr 0x20,r11
;        and      r11,r9
;        test_h_gr 0x20,r9
;        .endm
;
;        .macro test_s_system
;        mvr_h_gr ps,r9
;        mvi_h_gr 0x20,r11
;        and      r11,r9
;        test_h_gr 0x0,r9
;        .endm

; Set the interrupt bit
; ??? Do they mean "enable interrupts" or "disable interrupts"?
; Assuming enable here.
        .macro set_i val
        .if (\val == 1)
        ei
        .else
        di
        .endif
        .endm

; Test the stack mode
;        .macro test_i val
;        mvr_h_gr  ps,r9
;        mvi_h_gr  0x10,r11
;        and       r11,r9
;        .if (\val == 1)
;        test_h_gr 0x10,r9
;        .else
;        test_h_gr 0x0,r9
;        .endif
;        .endm
;
;; Set the ilm
;        .macro set_ilm val
;        stilm \val
;        .endm
;
;; Test the ilm
;        .macro test_ilm val
;        mvr_h_gr   ps,r9
;        mvi_h_gr   0x1f0000,r11
;        and        r11,r9
;        mvi_h_gr   \val,r12
;        mvi_h_gr   0x1f,r11
;        and       r11,r12
;        lsl        15,r12
;        lsl        1,r12
;        testr_h_gr r9,r12
;        .endm
;
; Test the condition codes
        .macro test_cc N Z V C
        .if \N
        bpl 9f
        nop
        .else
        bmi 9f
        nop
        .endif
        .if \Z
        bne 9f
        nop
        .else
        beq 9f
        nop
        .endif
        .if \V
        bvc 9f
        nop
        .else
        bvs 9f
        nop
        .endif
        .if \C
        bcc 9f
        nop
        .else
        bcs 9f
        nop
        .endif
        ba 8f
        nop
9:
        fail
8:
        .endm

        .macro test_move_cc N Z V C
        .if ..asm.arch.cris.v32
        ; V and C aren't affected on v32, so to re-use the test-cases,
        ; we fake them cleared.  There's a separate test, nonvcv32.ms
        ; covering this omission.
        clearf vc
        test_cc \N \Z 0 0
        .else
        test_cc \N \Z \V \C
        .endif
        .endm

; Set the division bits
;        .macro set_dbits val
;        mvr_h_gr ps,r12
;        mvi_h_gr 0xfffff8ff,r11
;        and r11,r12
;        mvi_h_gr \val,r9
;        mvi_h_gr 3,r11
;        and r11,r9
;        lsl 9,r9
;        or r9,r12
;        mvr_h_gr r12,ps
;        .endm
;
;; Test the division bits
;        .macro test_dbits val
;        mvr_h_gr ps,r9
;        lsr 9,r9
;        mvi_h_gr 3,r11
;        and r11,r9
;        test_h_gr \val,r9
;        .endm
;
; Save the return pointer
        .macro save_rp
        push srp
        .ENDM

; restore the return pointer
        .macro restore_rp
        pop srp
        .endm

; Ensure branch taken
        .macro take_branch opcode
        \opcode 9f
        nop
        fail
9:
        .endm

        .macro take_branch_d opcode val
        \opcode 9f
        nop
        move.d \val,r9
        fail
9:
        test_h_gr \val,r9
        .endm

; Ensure branch not taken
        .macro no_branch opcode
        \opcode 9f
        nop
        ba      8f
        nop
9:
        fail
8:
        .endm

        .macro no_branch_d opcode val
        \opcode 9f
        move.d   \val,r9
        nop
        ba      8f
        nop
9:
        fail
8:
        test_h_gr \val,r9
        .endm