1200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung /* 2200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * Generic two-operand compare-and-branch operation. Provide a "revcmp" 3200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * fragment that specifies the *reverse* comparison to perform, e.g. 4200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * for "if-le" you would use "gt". 5200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * 6200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * For: if-eq, if-ne, if-lt, if-ge, if-gt, if-le 7200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung */ 8200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung /* if-cmp vA, vB, +CCCC */ 9200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GET_OPA4(a0) # a0 <- A+ 10200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GET_OPB(a1) # a1 <- B 11200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GET_VREG(a3, a1) # a3 <- vB 12200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GET_VREG(a2, a0) # a2 <- vA 13200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung b${revcmp} a2, a3, 1f # branch to 1 if comparison failed 14200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung FETCH_S(rINST, 1) # rINST<- branch offset, in code units 15200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung b 2f 16200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung1: 17200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung li rINST, 2 # rINST- BYTE branch dist for not-taken 18200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung2: 19200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung#if MTERP_PROFILE_BRANCHES 20200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung EXPORT_PC() 21200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung move a0, rSELF 22200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung addu a1, rFP, OFF_FP_SHADOWFRAME 23200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung move a2, rINST 24200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung JAL(MterpProfileBranch) # (self, shadow_frame, offset) 25200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung bnez v0, MterpOnStackReplacement # Note: offset must be in rINST 26200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung#endif 27200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung addu a2, rINST, rINST # convert to bytes 28200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung FETCH_ADVANCE_INST_RB(a2) # update rPC, load rINST 29200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung bgez a2, .L_${opcode}_finish 30200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung lw ra, THREAD_FLAGS_OFFSET(rSELF) 31200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung b MterpCheckSuspendAndContinue 32200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung 33200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung%break 34200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung 35200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung.L_${opcode}_finish: 36200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GET_INST_OPCODE(t0) # extract opcode from rINST 37200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GOTO_OPCODE(t0) # jump to next instruction 38