1 /* 2 * Generic 32-bit floating-point operation. Provide an "instr" line that 3 * specifies an instruction that performs "s2 = s0 op s1". Because we 4 * use the "softfp" ABI, this must be an instruction, not a function call. 5 * 6 * For: add-float, sub-float, mul-float, div-float 7 */ 8 /* floatop vAA, vBB, vCC */ 9 FETCH(r0, 1) @ r0<- CCBB 10 mov r9, rINST, lsr #8 @ r9<- AA 11 mov r3, r0, lsr #8 @ r3<- CC 12 and r2, r0, #255 @ r2<- BB 13 VREG_INDEX_TO_ADDR(r3, r3) @ r3<- &vCC 14 VREG_INDEX_TO_ADDR(r2, r2) @ r2<- &vBB 15 flds s1, [r3] @ s1<- vCC 16 flds s0, [r2] @ s0<- vBB 17 18 FETCH_ADVANCE_INST(2) @ advance rPC, load rINST 19 $instr @ s2<- op 20 GET_INST_OPCODE(ip) @ extract opcode from rINST 21 VREG_INDEX_TO_ADDR(r9, r9) @ r9<- &vAA 22 fsts s2, [r9] @ vAA<- s2 23 GOTO_OPCODE(ip) @ jump to next instruction 24
