blob: 4a1feac1ac29b1ec34f97a13e8dd13bec4a88456 [file] [log] [blame]
/*
* Unconditional branch, 32-bit offset.
*
* The branch distance is a signed code-unit offset, which we need to
* double to get a byte offset.
*
* Unlike most opcodes, this one is allowed to branch to itself, so
* our "backward branch" test must be "<=0" instead of "<0".
*/
/* goto/32 +AAAAAAAA */
lh a0, 2(rPC) # a0 <- aaaa (low)
lh a1, 4(rPC) # a1 <- AAAA (high)
ins a0, a1, 16, 16 # a0 = sign-extended AAAAaaaa
dlsa rPC, a0, rPC, 1 # rPC <- rPC + AAAAAAAA * 2
FETCH_INST # load rINST
#if MTERP_SUSPEND
bgtz a0, 1f # AA * 2 > 0 => no suspend check
REFRESH_IBASE
1:
#else
lw ra, THREAD_FLAGS_OFFSET(rSELF) # Preload flags for MterpCheckSuspendAndContinue
blez a0, MterpCheckSuspendAndContinue
#endif
GET_INST_OPCODE v0 # extract opcode from rINST
GOTO_OPCODE v0 # jump to next instruction