-/* codegen_emit_stub_builtin ***************************************************
-
- Emits a stub routine which calls a builtin function.
-
-*******************************************************************************/
-
-void codegen_emit_stub_builtin(jitdata *jd, builtintable_entry *bte)
-{
- codeinfo *code;
- codegendata *cd;
- methoddesc *md;
- s4 i;
- s4 disp;
- s4 s1;
-
- /* get required compiler data */
-
- code = jd->code;
- cd = jd->cd;
-
- /* set some variables */
-
- md = bte->md;
-
- /* calculate stack frame size */
-
- cd->stackframesize =
- 1 + /* return address */
- sizeof(stackframeinfo) / SIZEOF_VOID_P +
- md->paramcount;
-
- /* create method header */
-
- (void) dseg_add_unique_address(cd, code); /* CodeinfoPointer */
- (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize */
- (void) dseg_add_unique_s4(cd, 0); /* IsSync */
- (void) dseg_add_unique_s4(cd, 0); /* IsLeaf */
- (void) dseg_add_unique_s4(cd, 0); /* IntSave */
- (void) dseg_add_unique_s4(cd, 0); /* FltSave */
- (void) dseg_addlinenumbertablesize(cd);
- (void) dseg_add_unique_s4(cd, 0); /* ExTableSize */
-
- /* generate stub code */
-
- M_LDA(REG_SP, REG_SP, -(cd->stackframesize * 8));
- M_AST(REG_RA, REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P);
-
-
-#if defined(ENABLE_GC_CACAO)
- /* Save callee saved integer registers in stackframeinfo (GC may
- need to recover them during a collection). */
-
- disp = cd->stackframesize * 8 - SIZEOF_VOID_P - sizeof(stackframeinfo) +
- OFFSET(stackframeinfo, intregs);
-
- for (i = 0; i < INT_SAV_CNT; i++)
- M_AST(abi_registers_integer_saved[i], REG_SP, disp + i * 8);
-#endif
-
- /* save integer and float argument registers */
-
- for (i = 0; i < md->paramcount; i++) {
- if (!md->params[i].inmemory) {
- s1 = md->params[i].regoff;
-
- switch (md->paramtypes[i].type) {
- case TYPE_INT:
- case TYPE_LNG:
- case TYPE_ADR:
- M_LST(s1, REG_SP, i * 8);
- break;
- case TYPE_FLT:
- case TYPE_DBL:
- M_DST(s1, REG_SP, i * 8);
- break;
- }
- }
- }
-
- /* prepare data structures for native function call */
-
- M_LDA(REG_A0, REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P);
- M_MOV(REG_PV, REG_A1);
- M_LDA(REG_A2, REG_SP, cd->stackframesize * 8);
- M_ALD(REG_A3, REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P);
- disp = dseg_add_functionptr(cd, codegen_stub_builtin_enter);
- M_ALD(REG_PV, REG_PV, disp);
- M_JSR(REG_RA, REG_PV);
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_LDA(REG_PV, REG_RA, -disp);
-
- /* restore integer and float argument registers */
-
- for (i = 0; i < md->paramcount; i++) {
- if (!md->params[i].inmemory) {
- s1 = md->params[i].regoff;
-
- switch (md->paramtypes[i].type) {
- case TYPE_INT:
- case TYPE_LNG:
- case TYPE_ADR:
- M_LLD(s1, REG_SP, i * 8);
- break;
- case TYPE_FLT:
- case TYPE_DBL:
- M_DLD(s1, REG_SP, i * 8);
- break;
- }
- }
- }
-
- /* do the builtin function call */
-
- disp = dseg_add_functionptr(cd, bte->fp);
- M_ALD(REG_PV, REG_PV, disp);
- M_JSR(REG_RA, REG_PV);
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_LDA(REG_PV, REG_RA, -disp); /* recompute pv from ra */
-
- /* save return value */
-
- switch (md->returntype.type) {
- case TYPE_INT:
- case TYPE_LNG:
- case TYPE_ADR:
- M_LST(REG_RESULT, REG_SP, 0 * 8);
- break;
- case TYPE_FLT:
- case TYPE_DBL:
- M_DST(REG_FRESULT, REG_SP, 0 * 8);
- break;
- case TYPE_VOID:
- break;
- }
-
- /* remove native stackframe info */
-
- M_LDA(REG_A0, REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P);
- disp = dseg_add_functionptr(cd, codegen_stub_builtin_exit);
- M_ALD(REG_PV, REG_PV, disp);
- M_JSR(REG_RA, REG_PV);
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_LDA(REG_PV, REG_RA, -disp);
- M_MOV(REG_RESULT, REG_ITMP1_XPTR);
-
- /* restore return value */
-
- switch (md->returntype.type) {
- case TYPE_INT:
- case TYPE_LNG:
- case TYPE_ADR:
- M_LLD(REG_RESULT, REG_SP, 0 * 8);
- break;
- case TYPE_FLT:
- case TYPE_DBL:
- M_DLD(REG_FRESULT, REG_SP, 0 * 8);
- break;
- case TYPE_VOID:
- break;
- }
-
-#if defined(ENABLE_GC_CACAO)
- /* Restore callee saved integer registers from stackframeinfo (GC
- might have modified them during a collection). */
-
- disp = cd->stackframesize * 8 - SIZEOF_VOID_P - sizeof(stackframeinfo) +
- OFFSET(stackframeinfo, intregs);
-
- for (i = 0; i < INT_SAV_CNT; i++)
- M_ALD(abi_registers_integer_saved[i], REG_SP, disp + i * 8);
-#endif
-
- M_ALD(REG_RA, REG_SP, (cd->stackframesize - 1) * 8); /* get RA */
- M_LDA(REG_SP, REG_SP, cd->stackframesize * 8);
-
- M_RET(REG_ZERO, REG_RA); /* return to caller */
-}
-
-