diff options
Diffstat (limited to 'vm/mterp/armv5te/zcmp.S')
| -rw-r--r-- | vm/mterp/armv5te/zcmp.S | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/vm/mterp/armv5te/zcmp.S b/vm/mterp/armv5te/zcmp.S new file mode 100644 index 0000000..bd63fe4 --- /dev/null +++ b/vm/mterp/armv5te/zcmp.S @@ -0,0 +1,27 @@ +%verify "branch taken" +%verify "branch not taken" + /* + * Generic one-operand compare-and-branch operation. Provide a "revcmp" + * fragment that specifies the *reverse* comparison to perform, e.g. + * for "if-le" you would use "gt". + * + * for: if-eqz, if-nez, if-ltz, if-gez, if-gtz, if-lez + */ + /* if-cmp vAA, +BBBB */ + mov r0, rINST, lsr #8 @ r0<- AA + GET_VREG(r2, r0) @ r2<- vAA + FETCH_S(r1, 1) @ r1<- branch offset, in code units + cmp r2, #0 @ compare (vA, 0) + mov${revcmp} r1, #2 @ r1<- inst branch dist for not-taken + adds r1, r1, r1 @ convert to bytes & set flags + FETCH_ADVANCE_INST_RB(r1) @ update rPC, load rINST +#if defined(WITH_JIT) + ldr r0, [rSELF, #offThread_pJitProfTable] + ldrmi rIBASE, [rSELF, #offThread_curHandlerTable] @ refresh table base + cmp r0,#0 + bne common_updateProfile @ test for JIT off at target +#else + ldrmi rIBASE, [rSELF, #offThread_curHandlerTable] @ refresh table base +#endif + GET_INST_OPCODE(ip) @ extract opcode from rINST + GOTO_OPCODE(ip) @ jump to next instruction |