| /* |
| * Unconditional branch, 8-bit offset. |
| * |
| * The branch distance is a signed code-unit offset, which we need to |
| * double to get a byte offset. |
| */ |
| /* goto +AA */ |
| /* tuning: use sbfx for 6t2+ targets */ |
| #if MTERP_PROFILE_BRANCHES |
| mov r0, rINST, lsl #16 @ r0<- AAxx0000 |
| movs rINST, r0, asr #24 @ rINST<- ssssssAA (sign-extended) |
| EXPORT_PC |
| mov r0, rSELF |
| add r1, rFP, #OFF_FP_SHADOWFRAME |
| mov r2, rINST |
| bl MterpProfileBranch @ (self, shadow_frame, offset) |
| cmp r0, #0 |
| bne MterpOnStackReplacement @ Note: offset must be in rINST |
| ldr lr, [rSELF, #THREAD_FLAGS_OFFSET] |
| adds r2, rINST, rINST @ r2<- byte offset, set flags |
| FETCH_ADVANCE_INST_RB r2 @ update rPC, load rINST |
| @ If backwards branch refresh rIBASE |
| bmi MterpCheckSuspendAndContinue |
| GET_INST_OPCODE ip @ extract opcode from rINST |
| GOTO_OPCODE ip @ jump to next instruction |
| #else |
| mov r0, rINST, lsl #16 @ r0<- AAxx0000 |
| movs rINST, r0, asr #24 @ rINST<- ssssssAA (sign-extended) |
| ldr lr, [rSELF, #THREAD_FLAGS_OFFSET] |
| adds r2, rINST, rINST @ r2<- byte offset, set flags |
| FETCH_ADVANCE_INST_RB r2 @ update rPC, load rINST |
| @ If backwards branch refresh rIBASE |
| bmi MterpCheckSuspendAndContinue |
| GET_INST_OPCODE ip @ extract opcode from rINST |
| GOTO_OPCODE ip @ jump to next instruction |
| #endif |
