1200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung /* 2200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * Unconditional branch, 32-bit offset. 3200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * 4200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * The branch distance is a signed code-unit offset, which we need to 5200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * double to get a byte offset. 6200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * 7200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * Unlike most opcodes, this one is allowed to branch to itself, so 8200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung * our "backward branch" test must be "<=0" instead of "<0". 9200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung */ 10200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung /* goto/32 +AAAAAAAA */ 11200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung#if MTERP_PROFILE_BRANCHES 12200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung FETCH(a0, 1) # a0 <- aaaa (lo) 13200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung FETCH(a1, 2) # a1 <- AAAA (hi) 14200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung sll a1, a1, 16 15200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung or rINST, a0, a1 # rINST <- AAAAaaaa 16200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung EXPORT_PC() 17200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung move a0, rSELF 18200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung addu a1, rFP, OFF_FP_SHADOWFRAME 19200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung move a2, rINST 20200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung JAL(MterpProfileBranch) # (self, shadow_frame, offset) 21200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung bnez v0, MterpOnStackReplacement # Note: offset must be in rINST 22200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung addu a1, rINST, rINST # a1 <- byte offset 23200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung FETCH_ADVANCE_INST_RB(a1) # update rPC, load rINST 24200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung bgtz a1, 1f 25200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung lw ra, THREAD_FLAGS_OFFSET(rSELF) 26200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung b MterpCheckSuspendAndContinue 27200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung1: 28200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GET_INST_OPCODE(t0) # extract opcode from rINST 29200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GOTO_OPCODE(t0) # jump to next instruction 30200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung#else 31200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung FETCH(a0, 1) # a0 <- aaaa (lo) 32200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung FETCH(a1, 2) # a1 <- AAAA (hi) 33200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung sll a1, a1, 16 34200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung or rINST, a0, a1 # rINST <- AAAAaaaa 35200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung addu a1, rINST, rINST # a1 <- byte offset 36200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung FETCH_ADVANCE_INST_RB(a1) # update rPC, load rINST 37200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung bgtz a1, 1f 38200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung lw ra, THREAD_FLAGS_OFFSET(rSELF) 39200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung b MterpCheckSuspendAndContinue 40200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung1: 41200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GET_INST_OPCODE(t0) # extract opcode from rINST 42200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung GOTO_OPCODE(t0) # jump to next instruction 43200f040af3e4fe9e178cb63c90860d58d90ef665Douglas Leung#endif 44