xref: /dalvik/vm/mterp/armv5te/OP_PACKED_SWITCH.S

%default { "func":"dvmInterpHandlePackedSwitch" }
%verify executed
    /*
     * 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(r0, 1)                        @ r0<- bbbb (lo)
    FETCH(r1, 2)                        @ r1<- BBBB (hi)
    mov     r3, rINST, lsr #8           @ r3<- AA
    orr     r0, r0, r1, lsl #16         @ r0<- BBBBbbbb
    GET_VREG(r1, r3)                    @ r1<- vAA
    add     r0, rPC, r0, lsl #1         @ r0<- PC + BBBBbbbb*2
    bl      $func                       @ r0<- code-unit branch offset
    movs    r9, r0, asl #1              @ r9<- branch byte offset, check sign
    bmi     common_backwardBranch       @ backward branch, do periodic checks
    beq     common_backwardBranch       @ (want to use BLE but V is unknown)
#if defined(WITH_JIT)
    GET_JIT_PROF_TABLE(r0)
    FETCH_ADVANCE_INST_RB(r9)           @ update rPC, load rINST
    cmp     r0,#0
    bne     common_updateProfile
    GET_INST_OPCODE(ip)                 @ extract opcode from rINST
    GOTO_OPCODE(ip)                     @ jump to next instruction
#else
    FETCH_ADVANCE_INST_RB(r9)           @ update rPC, load rINST
    GET_INST_OPCODE(ip)                 @ extract opcode from rINST
    GOTO_OPCODE(ip)                     @ jump to next instruction
#endif