blob: 44e77a41d89c62336e7d2dce5decf508097acd15 [file] [log] [blame]
%default { "func":"MterpDoPackedSwitch" }
/*
* Handle a packed-switch or sparse-switch instruction. In both cases
* we decode it and hand it off to a helper function.
*
* We don't really expect backward branches in a switch statement, but
* they're perfectly legal, so we check for them here.
*
* for: packed-switch, sparse-switch
*/
/* op vAA, +BBBBBBBB */
.extern $func
lh a0, 2(rPC) # a0 <- bbbb (lo)
lh a1, 4(rPC) # a1 <- BBBB (hi)
srl a3, rINST, 8 # a3 <- AA
ins a0, a1, 16, 16 # a0 <- BBBBbbbb
GET_VREG a1, a3 # a1 <- vAA
dlsa a0, a0, rPC, 1 # a0 <- PC + BBBBbbbb*2
jal $func # v0 <- code-unit branch offset
move rINST, v0
b MterpCommonTakenBranchNoFlags