1    /*
2     * Unconditional branch, 32-bit offset.
3     *
4     * The branch distance is a signed code-unit offset, which we need to
5     * double to get a byte offset.
6     *
7     * Unlike most opcodes, this one is allowed to branch to itself, so
8     * our "backward branch" test must be "<=0" instead of "<0".
9     */
10    /* goto/32 +AAAAAAAA */
11#if MTERP_PROFILE_BRANCHES
12    FETCH(a0, 1)                           #  a0 <- aaaa (lo)
13    FETCH(a1, 2)                           #  a1 <- AAAA (hi)
14    sll       a1, a1, 16
15    or        rINST, a0, a1                #  rINST <- AAAAaaaa
16    EXPORT_PC()
17    move      a0, rSELF
18    addu      a1, rFP, OFF_FP_SHADOWFRAME
19    move      a2, rINST
20    JAL(MterpProfileBranch)                #  (self, shadow_frame, offset)
21    bnez      v0, MterpOnStackReplacement  #  Note: offset must be in rINST
22    addu      a1, rINST, rINST             #  a1 <- byte offset
23    FETCH_ADVANCE_INST_RB(a1)              #  update rPC, load rINST
24    bgtz      a1, 1f
25    lw        ra, THREAD_FLAGS_OFFSET(rSELF)
26    b         MterpCheckSuspendAndContinue
271:
28    GET_INST_OPCODE(t0)                    #  extract opcode from rINST
29    GOTO_OPCODE(t0)                        #  jump to next instruction
30#else
31    FETCH(a0, 1)                           #  a0 <- aaaa (lo)
32    FETCH(a1, 2)                           #  a1 <- AAAA (hi)
33    sll       a1, a1, 16
34    or        rINST, a0, a1                #  rINST <- AAAAaaaa
35    addu      a1, rINST, rINST             #  a1 <- byte offset
36    FETCH_ADVANCE_INST_RB(a1)              #  update rPC, load rINST
37    bgtz      a1, 1f
38    lw        ra, THREAD_FLAGS_OFFSET(rSELF)
39    b         MterpCheckSuspendAndContinue
401:
41    GET_INST_OPCODE(t0)                    #  extract opcode from rINST
42    GOTO_OPCODE(t0)                        #  jump to next instruction
43#endif
44