divh


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The divh instructions of the device should be specified in the following formats.

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DIVH reg1, reg2

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DIVH reg1, reg2, reg3

 

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In asrh, the following formats can also be used in addition to the above.

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divh imm, reg2

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divh imm, reg2, reg3

 

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If the instruction is executed in syntax "divh imm, reg2", and the following expression is specified for imm, the assembler executes instruction expansion to generate multiple machine instructions.

(a)

Absolute expression having a value of other than 0 within the range of -16 to +15

divh    imm5, reg
mov     imm5, r1
divh    r1, reg

(b)

Absolute expression exceeding the range of -16 to +15, but within the range of -32,768 to +32,767

divh    imm16, reg
movea   imm16, r0, r1
divh    r1, reg

(c)

Absolute expression having a value exceeding the range of -32,768 to +32,767

If all the lower 16 bits of the value of imm are 0

divh    imm, reg
movhi   HIGHW(imm), r0, r1
divh    r1, reg

 

Else

divh    imm, reg
mov     imm, r1
divh    r1, reg

(d)

Relative expression having !label or %label, or that having $label for a label having a definition in the sdata/sbss-attribute section

divh    !label, reg
movea   !label, r0, r1
divh    r1, reg
divh    %label, reg
movea   %label, r0, r1
divh    r1, reg
divh    $label, reg
movea   $label, r0, r1
divh    r1, reg

(e)

Relative expression having #label or label, or that having $label for a label having no definition in the sdata/sbss-attribute section

divh    #label, reg
mov     #label, r1
divh    r1, reg
divh    label, reg
mov     label, r1
divh    r1, reg
divh    $label, reg
mov     $label, r1
divh    r1, reg

 

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If the instruction is executed in syntax "divh imm, reg2, reg3", and the following expression is specified for imm, the assembler executes instruction expansion to generate one or more machine instructions.

(a)

0

divh    0, reg2, reg3
divh    r0, reg2, reg3

(b)

Absolute expression having a value of other than 0 within the range of -16 to +15

divh    imm5, reg2, reg3
mov     imm5, r1
divh    r1, reg2, reg3

(c)

Absolute expression exceeding the range of -16 to +15, but within the range of -32,768 to +32,767

divh    imm16, reg2, reg3
movea   imm16, r0, r1
divh    r1, reg2, reg3

(d)

Absolute expression having a value exceeding the range of -32,768 to +32,767

If all the lower 16 bits of the value of imm are 0

divh    imm, reg2, reg3
movhi   HIGHW(imm), r0, r1
divh    r1, reg2, reg3

 

Else

divh    imm, reg2, reg3
mov     imm, r1
divh    r1, reg2, reg3

(e)

Relative expression having !label or %label, or that having $label for a label having a definition in the sdata/sbss-attribute section

divh    !label, reg2, reg3
movea   !label, r0, r1
divh    r1, reg2, reg3
divh    %label, reg2, reg3
movea   %label, r0, r1
divh    r1, reg2, reg3
divh    $label, reg2, reg3
movea   $label, r0, r1
divh    r1, reg2, reg3

(f)

Relative expression having #label or label, or that having $label for a label having no definition in the sdata/sbss-attribute section

divh    #label, reg2, reg3
mov     #label, r1
divh    r1, reg2, reg3
divh    label, reg2, reg3
mov     label, r1
divh    r1, reg2, reg3
divh    $label, reg2, reg3
mov     $label, r1
divh    r1, reg2, reg3