19 lines
874 B
ArmAsm
19 lines
874 B
ArmAsm
%default {"result":"%eax"}
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/*
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* Generic 32-bit "lit16" binary operation. Provide an "instr" line
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* that specifies an instruction that performs "result = eax op ecx".
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* This could be an x86 instruction or a function call. (If the result
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* comes back in a register other than eax, you can override "result".)
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*
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* For: add-int/lit16, rsub-int,
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* and-int/lit16, or-int/lit16, xor-int/lit16
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*/
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/* binop/lit16 vA, vB, #+CCCC */
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movl rINST, %eax # rax <- 000000BA
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sarl $$4, %eax # eax <- B
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GET_VREG %eax, %rax # eax <- vB
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andb $$0xf, rINSTbl # rINST <- A
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movswl 2(rPC), %ecx # ecx <- ssssCCCC
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$instr # for example: addl %ecx, %eax
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SET_VREG $result, rINSTq
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ADVANCE_PC_FETCH_AND_GOTO_NEXT 2
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