100b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze /* 200b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze * Generic two-operand compare-and-branch operation. Provide a "condition" 300b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze * fragment that specifies the comparison to perform, e.g. for 400b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze * "if-le" you would use "le". 500b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze * 600b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze * For: if-eq, if-ne, if-lt, if-ge, if-gt, if-le 700b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze */ 800b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze /* if-cmp vA, vB, +CCCC */ 9db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze .extern MterpProfileBranch 1000b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze ext a2, rINST, 8, 4 # a2 <- A 1100b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze ext a3, rINST, 12, 4 # a3 <- B 12db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze lh rINST, 2(rPC) # rINST <- offset (sign-extended CCCC) 1300b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze GET_VREG a0, a2 # a0 <- vA 1400b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze GET_VREG a1, a3 # a1 <- vB 1500b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze b${condition}c a0, a1, 1f 16db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze li rINST, 2 # offset if branch not taken 1700b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze1: 18db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze#if MTERP_PROFILE_BRANCHES 19db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze EXPORT_PC 20db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze move a0, rSELF 21db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze daddu a1, rFP, OFF_FP_SHADOWFRAME 22db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze move a2, rINST 23db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze jal MterpProfileBranch # (self, shadow_frame, offset) 24db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze bnezc v0, MterpOnStackReplacement # Note: offset must be in rINST 2500b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze#endif 26db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze dlsa rPC, rINST, rPC, 1 # rPC <- rPC + offset * 2 27db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze lw ra, THREAD_FLAGS_OFFSET(rSELF) # Preload flags for MterpCheckSuspendAndContinue 28db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze move a0, rINST # a0 <- offset 29db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze FETCH_INST # load rINST 30db045bea24d28ce6ad932fec4ce055af7be530e2Alexey Frunze bltz a0, MterpCheckSuspendAndContinue # suspend check if backwards branch 3100b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze GET_INST_OPCODE v0 # extract opcode from rINST 3200b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze GOTO_OPCODE v0 # jump to next instruction 33