1 /* 2 * Generic one-operand compare-and-branch operation. Provide a "revcmp" 3 * fragment that specifies the *reverse* comparison to perform, e.g. 4 * for "if-le" you would use "gt". 5 * 6 * for: if-eqz, if-nez, if-ltz, if-gez, if-gtz, if-lez 7 */ 8 /* if-cmp vAA, +BBBB */ 9 GET_OPA(a0) # a0 <- AA 10 GET_VREG(a2, a0) # a2 <- vAA 11 FETCH_S(rINST, 1) # rINST <- branch offset, in code units 12 b${revcmp} a2, zero, 1f # branch to 1 if comparison failed 13 b 2f 14 1: 15 li rINST, 2 # rINST- BYTE branch dist for not-taken 16 2: 17 #if MTERP_PROFILE_BRANCHES 18 EXPORT_PC() 19 move a0, rSELF 20 addu a1, rFP, OFF_FP_SHADOWFRAME 21 move a2, rINST 22 JAL(MterpProfileBranch) # (self, shadow_frame, offset) 23 bnez v0, MterpOnStackReplacement # Note: offset must be in rINST 24 #endif 25 addu a1, rINST, rINST # convert to bytes 26 FETCH_ADVANCE_INST_RB(a1) # update rPC, load rINST 27 bgez a1, 3f 28 lw ra, THREAD_FLAGS_OFFSET(rSELF) 29 b MterpCheckSuspendAndContinue 30 3: 31 GET_INST_OPCODE(t0) # extract opcode from rINST 32 GOTO_OPCODE(t0) # jump to next instruction 33
