}
M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
-
if (super == NULL) {
patcher_add_patch_ref(jd, PATCHER_checkcast_class,
iptr->sx.s23.s3.c.ref,
0);
}
-
M_MOV_IMM(supervftbl, REG_ITMP3);
JITCACHE_ADD_CACHED_REF_JD(jd, CRT_CLASSINFO_VFTBL, super);
- M_ILD32(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
+ if (super == NULL || super->vftbl->subtype_depth >= DISPLAY_SIZE) {
+ M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_CMP_MEMINDEX(REG_ITMP2, 0, REG_ITMP1, 0, REG_ITMP3);
+ emit_label_beq(cd, BRANCH_LABEL_6); /* good */
- /* if (s1 != REG_ITMP1) { */
- /* emit_mov_membase_reg(cd, REG_ITMP3, OFFSET(vftbl_t, baseval), REG_ITMP1); */
- /* emit_mov_membase_reg(cd, REG_ITMP3, OFFSET(vftbl_t, diffval), REG_ITMP3); */
- /* #if defined(ENABLE_THREADS) */
- /* codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase); */
- /* #endif */
- /* emit_alu_reg_reg(cd, ALU_SUB, REG_ITMP1, REG_ITMP2); */
+ if (super == NULL) {
+ M_ICMP_IMM(OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]), REG_ITMP1);
+ emit_label_bne(cd, BRANCH_LABEL_10); /* throw */
+ }
- /* } else { */
- M_ILD32(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, baseval));
- M_ISUB(REG_ITMP3, REG_ITMP2);
- M_MOV_IMM(supervftbl, REG_ITMP3);
- JITCACHE_ADD_CACHED_REF_JD(jd, CRT_CLASSINFO_VFTBL, super);
- M_ILD(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, diffval));
+ M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
+ M_CMP_MEMBASE(REG_ITMP2, OFFSET(vftbl_t, subtype_depth), REG_ITMP1);
+ emit_label_bgt(cd, BRANCH_LABEL_9); /* throw */
+
+ M_ALD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
+ M_CMP_MEMINDEX(REG_ITMP2, -4*DISPLAY_SIZE, REG_ITMP1, 2, REG_ITMP3);
+ emit_label_beq(cd, BRANCH_LABEL_7); /* good */
+
+ emit_label(cd, BRANCH_LABEL_9);
+ if (super == NULL)
+ emit_label(cd, BRANCH_LABEL_10);
+
+ /* reload s1, might have been destroyed */
+ emit_load_s1(jd, iptr, REG_ITMP1);
+ M_ALD_MEM(s1, TRAP_ClassCastException);
- /* } */
+ emit_label(cd, BRANCH_LABEL_7);
+ emit_label(cd, BRANCH_LABEL_6);
+ /* reload s1, might have been destroyed */
+ emit_load_s1(jd, iptr, REG_ITMP1);
+ }
+ else {
+ M_CMP_MEMBASE(REG_ITMP2, super->vftbl->subtype_offset, REG_ITMP3);
- M_CMP(REG_ITMP3, REG_ITMP2);
- emit_classcast_check(cd, iptr, BRANCH_ULE, REG_ITMP3, s1);
+ emit_classcast_check(cd, iptr, BRANCH_NE, REG_ITMP3, s1);
+ }
if (super != NULL)
emit_label(cd, BRANCH_LABEL_5);
emit_label_beq(cd, BRANCH_LABEL_5);
}
- M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
-
+ M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
if (super == NULL) {
patcher_add_patch_ref(jd, PATCHER_instanceof_class,
iptr->sx.s23.s3.c.ref, 0);
}
-
- M_MOV_IMM(supervftbl, REG_ITMP2);
+ M_MOV_IMM(supervftbl, REG_ITMP3);
JITCACHE_ADD_CACHED_REF_JD(jd, CRT_CLASSINFO_VFTBL, super);
- M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
- M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, diffval));
- M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
-
- M_ISUB(REG_ITMP2, REG_ITMP1);
- M_CLR(d); /* may be REG_ITMP2 */
- M_CMP(REG_ITMP3, REG_ITMP1);
- M_BA(5);
- M_MOV_IMM(1, d);
+
+ if (super == NULL || super->vftbl->subtype_depth >= DISPLAY_SIZE) {
+ M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_CMP_MEMINDEX(REG_ITMP2, 0, REG_ITMP1, 0, REG_ITMP3);
+ emit_label_bne(cd, BRANCH_LABEL_8); /* jump over INC/SETE */
+ if (d == REG_ITMP2) {
+ M_SETE(d);
+ M_BSEXT(d, d);
+ } else
+ M_IINC(d);
+ emit_label_br(cd, BRANCH_LABEL_6); /* true */
+ emit_label(cd, BRANCH_LABEL_8);
+
+ if (super == NULL) {
+ M_ICMP_IMM(OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]), REG_ITMP1);
+ emit_label_bne(cd, BRANCH_LABEL_10); /* false */
+ }
+
+ M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
+ M_CMP_MEMBASE(REG_ITMP2, OFFSET(vftbl_t, subtype_depth), REG_ITMP1);
+ emit_label_bgt(cd, BRANCH_LABEL_9); /* false */
+
+ M_ALD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
+ M_CMP_MEMINDEX(REG_ITMP2, -4*DISPLAY_SIZE, REG_ITMP1, 2, REG_ITMP3);
+ M_SETE(d);
+ if (d == REG_ITMP2) {
+ M_BSEXT(d, d);
+
+ emit_label_br(cd, BRANCH_LABEL_7); /* jump over M_CLR */
+ }
+
+ emit_label(cd, BRANCH_LABEL_9);
+ if (super == NULL)
+ emit_label(cd, BRANCH_LABEL_10);
+ if (d == REG_ITMP2) {
+ M_CLR(d);
+
+ emit_label(cd, BRANCH_LABEL_7);
+ }
+ emit_label(cd, BRANCH_LABEL_6);
+ }
+ else {
+ M_CMP_MEMBASE(REG_ITMP2, super->vftbl->subtype_offset, REG_ITMP3);
+
+ M_SETE(d);
+ if (d == REG_ITMP2)
+ M_BSEXT(d, d);
+ }
if (super != NULL)
emit_label(cd, BRANCH_LABEL_5);
projects / cacao.git / blobdiff