void GenerateSpinUnlock(Statement *stmt) { AMODE *ap; if( stmt != NULL && stmt->exp != NULL ) { initstack(); ap = GenerateExpression(stmt->exp,F_REG|F_IMMED,8); // Force return value into register 1 if( ap->preg != 1 ) { if (ap->mode == am_immed) { if (isFISA64) FISA64_GenLdi(makereg(1),ap,8); else GenerateTriadic(op_ori, 0, makereg(1),makereg(0),ap); } else GenerateDiadic(op_mov, 0, makereg(1),ap); if (isRaptor64) GenerateDiadic(op_outb, 0, makereg(0),make_indexed((int64_t)stmt->incrExpr,1)); else if (isFISA64) { GenerateMonadic(op_bsr, 0, make_string("_UnlockSema")); } else GenerateDiadic(op_sb, 0, makereg(0),make_indexed((int64_t)stmt->incrExpr,1)); } ReleaseTempRegister(ap); } }
// push the operand expression onto the stack. // static void GeneratePushParameter(ENODE *ep, int i, int n) { AMODE *ap; if (ep==NULL) return; ap = GenerateExpression(ep,F_REG|F_IMM8,8); if (ap==NULL) return; if (ap->mode==am_immed) GenerateDiadic(op_ss|op_sti,0,ap,make_indexed((n-i)*8-8,SP)); else GenerateDiadic(op_ss|op_sw,0,ap,make_indexed((n-i)*8-8,SP)); ReleaseTempRegister(ap); }
// Generate a function body. // void GenerateFunction(SYM *sym, Statement *stmt) { char buf[20]; char *bl; throwlab = retlab = contlab = breaklab = -1; lastsph = 0; memset(semaphores,0,sizeof(semaphores)); throwlab = nextlabel++; while( lc_auto & 7 ) /* round frame size to word */ ++lc_auto; if (sym->IsInterrupt) { //GenerateTriadic(op_subui,0,makereg(30),makereg(30),make_immed(30*8)); //GenerateDiadic(op_sm,0,make_indirect(30), make_mask(0x9FFFFFFE)); } if (!sym->IsNocall) { GenerateTriadic(op_subui,0,makereg(30),makereg(30),make_immed(24)); // For a leaf routine don't bother to store the link register or exception link register. if (sym->IsLeaf) GenerateDiadic(op_sw,0,makereg(27),make_indirect(30)); else { GenerateDiadic(op_sw, 0, makereg(27), make_indexed(0,30)); GenerateDiadic(op_sw, 0, makereg(28), make_indexed(8,30)); GenerateDiadic(op_sw, 0, makereg(31), make_indexed(16,30)); GenerateDiadic(op_lea,0,makereg(28),make_label(throwlab)); } GenerateDiadic(op_mov,0,makereg(27),makereg(30)); if (lc_auto) GenerateTriadic(op_subui,0,makereg(30),makereg(30),make_immed(lc_auto)); } if (optimize) opt1(stmt); GenerateStatement(stmt); GenerateReturn(sym,0); // Generate code for the hidden default catch GenerateLabel(throwlab); if (sym->IsLeaf){ if (sym->DoesThrow) { GenerateDiadic(op_mov,0,makereg(31),makereg(28)); GenerateDiadic(op_bra,0,make_label(retlab),NULL); // goto regular return cleanup code } } else { GenerateDiadic(op_lw,0,makereg(31),make_indexed(8,27)); // load throw return address from stack into LR GenerateDiadic(op_sw,0,makereg(31),make_indexed(16,27)); // and store it back (so it can be loaded with the lm) GenerateDiadic(op_bra,0,make_label(retlab),NULL); // goto regular return cleanup code } }
// push the operand expression onto the stack. // static void GeneratePushParameter(ENODE *ep, int i, int n) { AMODE *ap; ap = GenerateExpression(ep,F_REG,8); GenerateDiadic(op_sw,0,ap,make_indexed((n-i)*8-8,30)); ReleaseTempRegister(ap); }
void LoadFPRegister(int regno, int number) { if (fpreg_in_use[regno] >= 0) fatal("LoadRegister():register still in use"); fpreg_in_use[regno] = number; GenerateDiadic(op_lf,'d',makefpreg(regno),make_indexed(currentFn->GetTempBot()-number*sizeOfWord,regFP)); fpreg_alloc[number].f.isPushed = 'F'; }
void SpillFPRegister(Operand *ap, int number) { GenerateDiadic(op_sf,'d',ap,make_indexed(currentFn->GetTempBot()-ap->deep*sizeOfWord,regFP)); fpreg_stack[fpreg_stack_ptr].Operand = ap; fpreg_stack[fpreg_stack_ptr].f.allocnum = number; if (fpreg_alloc[number].f.isPushed=='T') fatal("SpillRegister(): register already spilled"); reg_alloc[number].f.isPushed = 'T'; }
// Generate a function body. // void GenerateFunction(SYM *sym, Statement *stmt) { char buf[20]; char *bl; int cnt, nn; AMODE *ap; ENODE *ep; SYM *sp; throwlab = retlab = contlab = breaklab = -1; lastsph = 0; memset(semaphores,0,sizeof(semaphores)); throwlab = nextlabel++; while( lc_auto & 7 ) /* round frame size to word */ ++lc_auto; if (sym->IsInterrupt) { //GenerateTriadic(op_subui,0,makereg(30),makereg(30),make_immed(30*8)); //GenerateDiadic(op_sm,0,make_indirect(30), make_mask(0x9FFFFFFE)); } if (!sym->IsNocall) { GenerateTriadic(op_subui,0,makereg(SP),makereg(SP),make_immed(32)); if (lc_auto || sym->NumParms > 0) { GenerateDiadic(op_ss|op_sw,0,makereg(regBP),make_indirect(SP)); } // if (sym->UsesPredicate) GenerateDiadic(op_ss|op_sws, 0, make_string("pregs"), make_indexed(24,SP)); // For a leaf routine don't bother to store the link register or exception link register. if (!sym->IsLeaf) { if (exceptions) { GenerateDiadic(op_ss|op_sws, 0, makebreg(CLR), make_indexed(8,SP)); } GenerateDiadic(op_ss|op_sws, 0, makebreg(LR), make_indexed(16,SP)); if (exceptions) { ep = allocEnode(); ep->nodetype = en_clabcon; ep->i = throwlab; ap = allocAmode(); ap->mode = am_immed; ap->offset = ep; GenerateDiadic(op_ldis,0, makebreg(CLR), ap); } } if (lc_auto || sym->NumParms > 0) { GenerateDiadic(op_mov,0,makereg(regBP),makereg(regSP)); if (lc_auto) GenerateTriadic(op_subui,0,makereg(regSP),makereg(regSP),make_immed(lc_auto)); } // Save registers used as register variables. // **** Done in Analyze.c **** //if( save_mask != 0 ) { // GenerateTriadic(op_subui,0,makereg(SP),makereg(SP),make_immed(popcnt(save_mask)*8)); // cnt = (bitsset(save_mask)-1)*8; // for (nn = 31; nn >=1 ; nn--) { // if (save_mask & (1 << nn)) { // GenerateTriadic(op_sw,0,makereg(nn),make_indexed(cnt,SP),NULL); // cnt -= 8; // } // } //} } if (optimize) sym->NumRegisterVars = opt1(stmt); GenerateStatement(stmt); GenerateReturn(sym,0); // Generate code for the hidden default catch if (exceptions) { if (sym->IsLeaf){ if (sym->DoesThrow) { GenerateLabel(throwlab); ap = GetTempRegister(); GenerateDiadic(op_mfspr,0,ap,makebreg(CLR)); GenerateDiadic(op_mtspr,0,makebreg(LR),ap); ReleaseTempRegister(ap); GenerateMonadic(op_bra,0,make_clabel(retlab)); // goto regular return cleanup code } } else { GenerateLabel(throwlab); GenerateDiadic(op_lws,0,makebreg(regLR),make_indexed(8,regBP)); // load throw return address from stack into LR GenerateDiadic(op_sws,0,makebreg(regLR),make_indexed(16,regBP)); // and store it back (so it can be loaded with the lm) GenerateMonadic(op_bra,0,make_clabel(retlab)); // goto regular return cleanup code } } }
// Generate a return statement. // void GenerateReturn(SYM *sym, Statement *stmt) { AMODE *ap; int nn; int lab1; int cnt; // Generate code to evaluate the return expression. if( stmt != NULL && stmt->exp != NULL ) { initstack(); ap = GenerateExpression(stmt->exp,F_ALL & ~F_BREG,8); // Force return value into register 1 if( ap->preg != 1 ) { if (ap->mode == am_immed) GenerateDiadic(op_ldi, 0, makereg(1),ap); else if (ap->mode == am_reg) GenerateDiadic(op_mov, 0, makereg(1),ap); else GenerateDiadic(op_lw,0,makereg(1),ap); } } // Generate the return code only once. Branch to the return code for all returns. if( retlab == -1 ) { retlab = nextlabel++; GenerateLabel(retlab); // Unlock any semaphores that may have been set for (nn = lastsph - 1; nn >= 0; nn--) GenerateDiadic(op_sb,0,makereg(0),make_string(semaphores[nn])); if (sym->IsNocall) // nothing to do for nocall convention return; // Restore registers used as register variables. if( bsave_mask != 0 ) { cnt = (bitsset(bsave_mask)-1)*8; for (nn = 15; nn >=1 ; nn--) { if (bsave_mask & (1 << nn)) { GenerateDiadic(op_ss|op_lws,0,makebreg(nn),make_indexed(cnt,SP)); cnt -= 8; } } GenerateTriadic(op_addui,0,makereg(SP),makereg(SP),make_immed(popcnt(bsave_mask)*8)); } if( save_mask != 0 ) { cnt = (bitsset(save_mask)-1)*8; for (nn = 31; nn >=1 ; nn--) { if (save_mask & (1 << nn)) { GenerateDiadic(op_ss|op_lw,0,makereg(nn),make_indexed(cnt,SP)); cnt -= 8; } } GenerateTriadic(op_addui,0,makereg(SP),makereg(SP),make_immed(popcnt(save_mask)*8)); } // Unlink the stack // For a leaf routine the link register and exception link register doesn't need to be saved/restored. if (lc_auto || sym->NumParms > 0) { GenerateDiadic(op_mov,0,makereg(SP),makereg(regBP)); GenerateDiadic(op_ss|op_lw,0,makereg(regBP),make_indirect(regSP)); } if (!sym->IsLeaf) { if (exceptions) GenerateDiadic(op_ss|op_lws,0,makebreg(CLR),make_indexed(8,regSP)); GenerateDiadic(op_ss|op_lws,0,makebreg(LR),make_indexed(16,regSP)); // if (sym->UsesPredicate) } GenerateDiadic(op_ss|op_lws,0,make_string("pregs"),make_indexed(24,regSP)); //if (isOscall) { // GenerateDiadic(op_move,0,makereg(0),make_string("_TCBregsave")); // gen_regrestore(); //} // Generate the return instruction. For the Pascal calling convention pop the parameters // from the stack. if (sym->IsInterrupt) { //GenerateTriadic(op_addui,0,makereg(30),makereg(30),make_immed(24)); //GenerateDiadic(op_lm,0,make_indirect(30),make_mask(0x9FFFFFFE)); //GenerateTriadic(op_addui,0,makereg(30),makereg(30),make_immed(popcnt(0x9FFFFFFE)*8)); GenerateMonadic(op_rti,0,(AMODE *)NULL); return; } if (sym->IsPascal) { GenerateTriadic(op_addui,0,makereg(regSP),makereg(regSP),make_immed(32+sym->NumParms * 8)); GenerateMonadic(op_rts,0,(AMODE *)NULL); } else { GenerateTriadic(op_addui,0,makereg(regSP),makereg(regSP),make_immed(32)); GenerateMonadic(op_rts,0,(AMODE*)NULL); } } // Just branch to the already generated stack cleanup code. else { GenerateMonadic(op_bra,0,make_clabel(retlab)); } }
// Generate a function body. // void GenerateFunction(SYM *sym, Statement *stmt) { char buf[20]; char *bl; int cnt, nn; AMODE *ap; ENODE *ep; SYM *sp; std::string vep; throwlab = retlab = contlab = breaklab = -1; lastsph = 0; memset(semaphores,0,sizeof(semaphores)); throwlab = nextlabel++; retlab = nextlabel++; while( lc_auto & 7 ) /* round frame size to word */ ++lc_auto; if (sym->IsInterrupt) { //GenerateTriadic(op_subui,0,makereg(30),makereg(30),make_immed(30*8)); //GenerateDiadic(op_sm,0,make_indirect(30), make_mask(0x9FFFFFFE)); } if (sym->prolog) { if (optimize) opt1(sym->prolog); GenerateStatement(sym->prolog); } if (!sym->IsNocall) { GenerateTriadic(op_addui,0,makereg(regSP),makereg(regSP),make_immed(-GetReturnBlockSize())); if (lc_auto || sym->NumParms > 0) { GenerateDiadic(op_sw,0,makereg(regBP),make_indirect(regSP)); } // if (sym->UsesPredicate) GenerateDiadic(op_sws, 0, make_string("pregs"), make_indexed(24,regSP)); GenerateDiadic(op_sw, 0, makereg(regCLP),make_indexed(32,regSP)); // For a leaf routine don't bother to store the link register or exception link register. // Since virtual functions call other functions, they can't be leaf // routines. if (!sym->IsLeaf || sym->IsVirtual) { if (exceptions) { GenerateDiadic(op_sws, 0, makebreg(regXLR), make_indexed(8,regSP)); } GenerateDiadic(op_sws, 0, makebreg(regLR), make_indexed(16,regSP)); if (exceptions) { ep = allocEnode(); ep->nodetype = en_clabcon; ep->i = throwlab; ap = allocAmode(); ap->mode = am_immed; ap->offset = ep; GenerateDiadic(op_ldis,0, makebreg(regXLR), ap); } } GenerateDiadic(op_lw,0,makereg(regCLP),make_indexed(GetReturnBlockSize(),regSP)); vep = *sym->mangledName; vep += "_VEP"; GenerateMonadic(op_fnname,0,make_string((char *)vep.c_str())); // Generate switch to call derived methods if (sym->IsVirtual || sym->derivitives) { char buf[20]; char *buf2; DerivedMethod *mthd; dfs.printf("VirtualFunction Switch"); GenerateDiadic(op_lcu,0,makereg(24),make_indirect(regCLP)); mthd = sym->derivitives; while (mthd) { sprintf(buf, "p%d", 7); buf2 = my_strdup(buf); GenerateTriadic(op_cmpi,0,make_string(buf2),makereg(24),make_immed(mthd->typeno)); vep = *(mthd->name); vep += "_VEP"; // Virtual Entry Point GeneratePredicatedMonadic(7,PredOp(op_eq),op_jmp,0, make_string((char *)vep.c_str())); // jump to the method mthd = mthd->next; } } if (lc_auto || sym->NumParms > 0) { GenerateDiadic(op_mov,0,makereg(regBP),makereg(regSP)); if (lc_auto) GenerateTriadic(op_addui,0,makereg(regSP),makereg(regSP),make_immed(-lc_auto)); } // Save registers used as register variables. // **** Done in Analyze.c **** //if( save_mask != 0 ) { // GenerateTriadic(op_subui,0,makereg(SP),makereg(SP),make_immed(popcnt(save_mask)*8)); // cnt = (bitsset(save_mask)-1)*8; // for (nn = 31; nn >=1 ; nn--) { // if (save_mask & (1 << nn)) { // GenerateTriadic(op_sw,0,makereg(nn),make_indexed(cnt,SP),NULL); // cnt -= 8; // } // } //} } if (optimize) sym->NumRegisterVars = opt1(stmt); GenerateStatement(stmt); GenerateEpilog(sym); // Generate code for the hidden default catch if (exceptions) { if (sym->IsLeaf){ if (sym->DoesThrow) { GenerateLabel(throwlab); ap = GetTempRegister(); GenerateDiadic(op_mfspr,0,ap,makebreg(regXLR)); GenerateDiadic(op_mtspr,0,makebreg(regLR),ap); ReleaseTempRegister(ap); GenerateMonadic(op_br,0,make_clabel(retlab)); // goto regular return cleanup code } } else { GenerateLabel(throwlab); GenerateDiadic(op_lws,0,makebreg(regLR),make_indexed(8,regBP)); // load throw return address from stack into LR GenerateDiadic(op_sws,0,makebreg(regLR),make_indexed(16,regBP)); // and store it back (so it can be loaded with the lm) GenerateMonadic(op_br,0,make_clabel(retlab)); // goto regular return cleanup code } } }
// Generate function epilog code. // void GenerateEpilog(SYM *sym) { AMODE *ap; int nn; int lab1; int cnt; // Generate the return code only once. Branch to the return code for all returns. GenerateLabel(retlab); // Unlock any semaphores that may have been set for (nn = lastsph - 1; nn >= 0; nn--) GenerateDiadic(op_sb,0,makereg(0),make_string(semaphores[nn])); if (sym->IsNocall) // nothing to do for nocall convention return; // Restore registers used as register variables. if( bsave_mask != 0 ) { cnt = (bitsset(bsave_mask)-1)*8; for (nn = 15; nn >=1 ; nn--) { if (bsave_mask & (1 << nn)) { GenerateDiadic(op_lws,0,makebreg(nn),make_indexed(cnt,regSP)); cnt -= 8; } } GenerateTriadic(op_addui,0,makereg(SP),makereg(regSP),make_immed(popcnt(bsave_mask)*8)); } if( save_mask != 0 ) { cnt = (bitsset(save_mask)-1)*8; for (nn = 31; nn >=1 ; nn--) { if (save_mask & (1 << nn)) { GenerateDiadic(op_lw,0,makereg(nn),make_indexed(cnt,regSP)); cnt -= 8; } } GenerateTriadic(op_addui,0,makereg(regSP),makereg(regSP),make_immed(popcnt(save_mask)*8)); } // Unlink the stack // For a leaf routine the link register and exception link register doesn't need to be saved/restored. if (lc_auto || sym->NumParms > 0) { GenerateDiadic(op_mov,0,makereg(regSP),makereg(regBP)); GenerateDiadic(op_lw,0,makereg(regBP),make_indirect(regSP)); } if (!sym->IsLeaf) { if (exceptions) GenerateDiadic(op_lws,0,makebreg(regXLR),make_indexed(8,regSP)); // 11=CLR GenerateDiadic(op_lws,0,makebreg(regLR),make_indexed(16,regSP)); // 1 = LR // if (sym->UsesPredicate) } GenerateDiadic(op_lws,0,make_string("pregs"),make_indexed(24,regSP)); GenerateDiadic(op_lw,0,makereg(regCLP),make_indexed(32,regSP)); if (sym->epilog) { if (optimize) opt1(sym->epilog); GenerateStatement(sym->epilog); return; } //if (isOscall) { // GenerateDiadic(op_move,0,makereg(0),make_string("_TCBregsave")); // gen_regrestore(); //} // Generate the return instruction. For the Pascal calling convention pop the parameters // from the stack. if (sym->IsInterrupt) { //GenerateTriadic(op_addui,0,makereg(30),makereg(30),make_immed(24)); //GenerateDiadic(op_lm,0,make_indirect(30),make_mask(0x9FFFFFFE)); //GenerateTriadic(op_addui,0,makereg(30),makereg(30),make_immed(popcnt(0x9FFFFFFE)*8)); GenerateMonadic(op_rti,0,(AMODE *)NULL); return; } if (sym->IsPascal) { GenerateTriadic(op_addui,0,makereg(regSP),makereg(regSP),make_immed(GetReturnBlockSize()+sym->NumParms * 8)); GenerateMonadic(op_rts,0,(AMODE *)NULL); } else { GenerateTriadic(op_addui,0,makereg(regSP),makereg(regSP),make_immed(GetReturnBlockSize())); GenerateMonadic(op_rts,0,(AMODE*)NULL); } }
void GenerateSpinlock(Statement *stmt) { int lab1, lab2, lab3, lab4; AMODE *ap1, *ap2; AMODE *ap; int sp = 0; lab1 = nextlabel++; lab2 = nextlabel++; lab3 = nextlabel++; if( stmt != (Statement *)NULL && stmt->exp != (ENODE *)NULL ) { initstack(); ap1 = GetTempRegister(); ap2 = GetTempRegister(); ap = GenerateExpression(stmt->exp,F_REG,8); GenerateDiadic(op_mov,0,makereg(1),ap); if (stmt->initExpr) { if (isFISA64) FISA64_GenLdi(makereg(2),make_immed((int64_t)stmt->initExpr)); else GenerateTriadic(op_ori, 0, makereg(2),makereg(0),make_immed((int64_t)stmt->initExpr)); } else { GenerateDiadic(op_ldi,0,makereg(2),make_immed(-1)); } GenerateMonadic(op_bsr,0,make_string("_LockSema")); if (stmt->initExpr) GenerateDiadic(op_beq,0,makereg(1),make_clabel(lab2)); ReleaseTempRegister(ap); ReleaseTempRegister(ap2); ReleaseTempRegister(ap1); // We treat this statement generation like a function call and save // the used temporary beforehand. The statement might reinitialize // the expression vars. There aren't any other cases where temporaries // are needed after statements are generated. GenerateMonadic(op_push,0,ap); GenerateStatement(stmt->s1); GenerateMonadic(op_pop,0,ap); // unlock if (isRaptor64) GenerateDiadic(op_outb, 0, makereg(0), make_indexed((int64_t)stmt->incrExpr,ap->preg)); else if (isFISA64) { GenerateDiadic(op_mov, 0, makereg(1), makereg(ap->preg)); GenerateMonadic(op_bsr, 0, make_string("_UnlockSema")); } else GenerateDiadic(op_sw, 0, makereg(0), make_indexed((int64_t)stmt->incrExpr,ap->preg)); if (stmt->initExpr) { GenerateMonadic(isThor?op_br:op_bra,0,make_clabel(lab3)); GenerateLabel(lab2); GenerateStatement(stmt->s2); GenerateLabel(lab3); } else { printf("Warning: The lockfail code is unreachable because spinlock tries are infinite.\r\n"); } } //ap1 = GetTempRegister(); //ap2 = GetTempRegister(); //if (stmt->exp) { // lab2 = nextlabel++; // GenerateTriadic(op_ori,0,ap2,makereg(0),make_immed(stmt->exp)); // GenerateLabel(lab1); // GenerateTriadic(op_beq,0,ap2,makereg(0),make_label(lab2)); // GenerateTriadic(op_subui,0,ap2,ap2,make_immed(1)); // GenerateTriadic(op_lwr,0,ap1,make_string(stmt->label),NULL); // GenerateTriadic(op_bne,0,ap1,makereg(0),make_label(lab1),NULL); // GenerateTriadic(op_not,0,ap1,ap1,NULL); // GenerateTriadic(op_swc,0,ap1,make_string(stmt->label),NULL); // GenerateTriadic(op_bnr,0,make_label(lab1),NULL,NULL); //} //else { // GenerateLabel(lab1); // GenerateTriadic(op_lwr,0,ap1,make_string(stmt->label),NULL); // GenerateTriadic(op_bne,0,ap1,makereg(0),make_label(lab1),NULL); // GenerateTriadic(op_not,0,ap1,ap1,NULL); // GenerateTriadic(op_swc,0,ap1,make_string(stmt->label),NULL); // GenerateTriadic(op_bnr,0,make_label(lab1),NULL,NULL); //} //ReleaseTempRegister(ap1); //ReleaseTempRegister(ap2); //GenerateStatement(stmt->s1); //GenerateDiadic(op_sb,0,makereg(0),make_string(stmt->label)); //if (stmt->exp) { // lab3 = nextlabel++; // GenerateTriadic(op_bra,0,make_label(lab3),NULL,NULL); // GenerateLabel(lab2); // GenerateStatement(stmt->s2); // GenerateLabel(lab3); //} //else { // printf("Warning: The lockfail code is unreachable because spinlock tries are infinite.\r\n"); //} }