%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, +BBBB */ | |
FETCH w0, 1 // w0<- bbbb (lo) | |
FETCH w1, 2 // w1<- BBBB (hi) | |
lsr w3, wINST, #8 // w3<- AA | |
orr w0, w0, w1, lsl #16 // w0<- BBBBbbbb | |
GET_VREG w1, w3 // w1<- vAA | |
add x0, xPC, w0, lsl #1 // w0<- PC + BBBBbbbb*2 | |
bl $func // w0<- code-unit branch offset | |
sbfm xINST, x0, 0, 31 | |
b MterpCommonTakenBranchNoFlags |