%{
#define BFEHAX
+/* macros zum registerzugriff bei kinder */
#define KID_REG(A) bnode->kids[A]->reg
#define KIDKID_REG(A,B) bnode->kids[A]->kids[B]->reg
#define KIDKIDKID_REG(A,B,C) bnode->kids[A]->kids[B]->kids[C]->reg
+
+/* macros zum wertezugriff bei kindern */
#define KID_VAL(A) bnode->kids[A]->val
#define KIDKID_VAL(A,B) bnode->kids[A]->kids[B]->val
#define KIDKIDKID_VAL(A,B,C) bnode->kids[A]->kids[B]->kids[C]->val
+
+/* macros zum zugriff des aktuellen knotens */
#define BN_REG bnode->reg
#define BN_VAL bnode->val
-/* falls ein parameter auf der "leseseite" ist, soll das statt ein weiteres
- * register verwendet werden */
+/* wenn sich ein parameter auf der "leseseite" (also links bei at&t syntax)
+ * befindet, dann soll dieses register verwendet werden */
#define KIDREG2PARM(A) if(bnode->kids[A]->param_index > -1) { bnode->kids[A]->reg = param_reg(bnode->kids[A]->param_index); }
#define KIDKIDREG2PARM(A,B) if(bnode->kids[A]->kids[B]->param_index > -1) { bnode->kids[A]->kids[B]->reg = param_reg(bnode->kids[A]->kids[B]->param_index); }
#define KIDKIDKIDREG2PARM(A,B,C) if(bnode->kids[A]->kids[B]->kids[C]->param_index > -1) { bnode->kids[A]->kids[B]->kids[C]->reg = param_reg(bnode->kids[A]->kids[B]->kids[C]->param_index); }
+/* wenn sich ein parameter auf der "schreibeseite" befindet (also rechts bei
+ * at&t syntax), dann muss es vorher in ein temporaeres register gemovt werden */
#define KIDREG2ID(A) if(bnode->kids[A]->op == O_ID && bnode->kids[A]->param_index > -1) move(param_reg(bnode->kids[A]->param_index), bnode->kids[A]->reg);
#include <stdio.h>
expr: O_ID # 0 #
expr: imm # 1 # moveimm(BN_VAL, BN_REG);
-expr: O_SUB(expr,expr) # 1 # gen_e_eno(bnode, "subq");
+
+expr: O_SUB(expr,expr) # 1 # gen_e_eno(bnode, "subq");
expr: O_SUB(expr,O_FIELD(expr)) # 2 # gen_e_field(bnode, "subq");
-expr: O_SUB(expr,imm) # 2 # gen_e_imm(bnode, "subq");
-expr: O_SUB(imm,expr) # 2 # gen_imm_eno(bnode, "subq");
-expr: O_SUB(imm,O_FIELD(expr)) # 2 # gen_imm_field(bnode);
+expr: O_SUB(expr,imm) # 2 # gen_e_imm(bnode, "subq");
+expr: O_SUB(imm,expr) # 2 # gen_imm_eno(bnode, "subq");
+expr: O_SUB(imm,O_FIELD(expr)) # 2 # gen_imm_field(bnode);
expr: O_SUB(expr,O_SUB(O_ID,expr)) # 2 # gen_subspecial(bnode, 0);
-expr: O_SUB(expr,O_SUB(imm,expr)) # 2 # gen_subspecial(bnode, 1);
+expr: O_SUB(expr,O_SUB(imm,expr)) # 2 # gen_subspecial(bnode, 1);
-expr: O_SUB(expr,O_MUL(O_MONE,expr)) # 1 # gen_lea(bnode,0);
-expr: O_SUB(expr,O_MUL(O_MTWO,expr)) # 1 # gen_lea(bnode,0);
-expr: O_SUB(expr,O_MUL(O_MFOUR,expr)) # 1 # gen_lea(bnode,0);
+expr: O_SUB(expr,O_MUL(O_MONE,expr)) # 1 # gen_lea(bnode,0);
+expr: O_SUB(expr,O_MUL(O_MTWO,expr)) # 1 # gen_lea(bnode,0);
+expr: O_SUB(expr,O_MUL(O_MFOUR,expr)) # 1 # gen_lea(bnode,0);
expr: O_SUB(expr,O_MUL(O_MEIGHT,expr)) # 1 # gen_lea(bnode,0);
-expr: O_SUB(expr,O_MUL(expr,O_MONE)) # 1 # gen_lea(bnode,1);
-expr: O_SUB(expr,O_MUL(expr,O_MTWO)) # 1 # gen_lea(bnode,1);
-expr: O_SUB(expr,O_MUL(expr,O_MFOUR)) # 1 # gen_lea(bnode,1);
+expr: O_SUB(expr,O_MUL(expr,O_MONE)) # 1 # gen_lea(bnode,1);
+expr: O_SUB(expr,O_MUL(expr,O_MTWO)) # 1 # gen_lea(bnode,1);
+expr: O_SUB(expr,O_MUL(expr,O_MFOUR)) # 1 # gen_lea(bnode,1);
expr: O_SUB(expr,O_MUL(expr,O_MEIGHT)) # 1 # gen_lea(bnode,1);
-expr: O_ADD(expr,expr) # 1 # gen_e_eno(bnode, "addq");
-expr: O_ADD(expr,O_FIELD(expr)) # 2 # gen_e_field(bnode, "addq");
+
+expr: O_ADD(expr,expr) # 1 # gen_e_eno(bnode, "addq");
expr: O_ADD(expr,imm) # 2 # gen_e_imm(bnode, "addq");
expr: O_ADD(imm,expr) # 2 # gen_imm_eno(bnode, "addq");
-expr: O_MUL(expr,expr) # 1 # gen_e_eno(bnode, "imulq");
-expr: O_MUL(expr,O_FIELD(expr)) # 2 # gen_e_field(bnode, "imulq");
+expr: O_ADD(expr,O_FIELD(expr)) # 2 # gen_e_field(bnode, "addq");
+
+
+expr: O_MUL(expr,expr) # 1 # gen_e_eno(bnode, "imulq");
expr: O_MUL(expr,imm) # 1 # gen_e_imm(bnode, "imulq");
+expr: O_MUL(imm,expr) # 1 # gen_imm_eno(bnode, "imulq");
+
+expr: O_MUL(expr,O_FIELD(expr)) # 1 # gen_e_field(bnode, "imulq");
expr: O_MUL(O_FIELD(expr),imm) # 1 # gen_field_imm(bnode);
-expr: O_MUL(imm,expr) # 1 # gen_imm_eno(bnode, "imulq");
-expr: O_OR(expr,expr) # 1 # gen_e_eno(bnode, "orq");
-expr: O_OR(expr,imm) # 2 # gen_e_imm(bnode, "orq");
+expr: O_OR(expr,expr) # 1 # gen_e_eno(bnode, "orq");
+expr: O_OR(expr,imm) # 2 # gen_e_imm(bnode, "orq");
expr: O_OR(expr,O_FIELD(expr)) # 2 # gen_e_field(bnode, "orq");
-expr: O_LESS(expr,expr) # 3 # gen_eqless(bnode, "l", 1, 1, 0);
+
+expr: O_LESS(expr,expr) # 3 # gen_eqless(bnode, "l", 1, 1, 0);
expr: O_LESS(expr,O_FIELD(expr)) # 3 # gen_eqless(bnode, "l", 1, 1, 1);
-expr: O_LESS(expr,imm) # 3 # gen_eqless(bnode, "l", 1, 0, 0);
-expr: O_LESS(imm,expr) # 3 # gen_eqless(bnode, "g", 0, 1, 0);
+expr: O_LESS(expr,imm) # 3 # gen_eqless(bnode, "l", 1, 0, 0);
+expr: O_LESS(imm,expr) # 3 # gen_eqless(bnode, "g", 0, 1, 0);
+
-expr: O_EQ(expr,expr) # 3 # gen_eqless(bnode, "e", 1, 1, 0);
+expr: O_EQ(expr,expr) # 3 # gen_eqless(bnode, "e", 1, 1, 0);
expr: O_EQ(expr,O_FIELD(expr)) # 3 # gen_eqless(bnode, "e", 1, 1, 1);
-expr: O_EQ(expr,imm) # 3 # gen_eqless(bnode, "e", 1, 0, 0);
-expr: O_EQ(imm,expr) # 3 # gen_eqless(bnode, "e", 0, 1, 0);
-expr: O_EQ(expr,O_NULL) # 3 # gen_eqless(bnode, "e", 1, 0, 0);
+expr: O_EQ(expr,imm) # 3 # gen_eqless(bnode, "e", 1, 0, 0);
+expr: O_EQ(imm,expr) # 3 # gen_eqless(bnode, "e", 0, 1, 0);
+expr: O_EQ(expr,O_NULL) # 3 # gen_eqless(bnode, "e", 1, 0, 0);
+
expr: O_EQ(O_EQ(expr,O_NULL),O_NULL) # 3 # gen_eqless(bnode, "ne", 1, 0, 1);
expr: O_EQ(O_EQ(O_EQ(expr,O_NULL),O_NULL),O_NULL) # 3 # gen_eqless(bnode, "e", 1, 0, 2);
-expr: O_FIELD(expr) # 1 # printf("\t//field(expr)\n"); KIDREG2PARM(0); printf("\tmovq %d(%%%s), %%%s\n", bnode->soffset * 8, KID_REG(0), BN_REG);
-expr: O_FIELD(imm) # 1 # printf("\t//field(imm)\n"); printf("\tmovq %d, %%%s\n", KID_VAL(0) + (bnode->soffset * 8), BN_REG);
+expr: O_FIELD(expr) # 1 # printf("\t//field(expr)\n"); KIDREG2PARM(0); printf("\tmovq %d(%%%s), %%%s\n", bnode->soffset * 8, KID_REG(0), BN_REG);
+expr: O_FIELD(imm) # 1 # printf("\t//field(imm)\n"); printf("\tmovq %d, %%%s\n", KID_VAL(0) + (bnode->soffset * 8), BN_REG);
imm: O_ADD(imm,imm) # 0 # BN_VAL = KID_VAL(0) + KID_VAL(1);
statinout()
xxputsin(@Expr.s@,)
@i @Statement.node@ = new_node(O_RET, @Expr.node@, TREENULL, @Expr.exprcount@+1); fprintf(stderr, "RETURN: %s (gparamges: %i, exprcount: %i, gesamt %i [maximal: 7])\n", @Expr.gparamges@ + @Expr.exprcount@ + 1 > 7 ? "zu hohe tiefe" : "tiefe passt", @Expr.gparamges@, @Expr.exprcount@+1, @Expr.gparamges@+@Expr.exprcount@+1);
- @reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, 0, @Expr.gparamges@);
+ @reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, @Expr.gparamges@);
@}
;
@reg {
if(!(@Expr.node@->kids[0] == TREENULL && @Expr.node@->kids[1] == TREENULL)) {
@Term.node@->reg = @Expr.node@->reg;
- @Term.node@->skip = 0;
if(@Minusterm.imm@) {
@Minusterm.node@->reg = @Expr.node@->reg;
} else {
- @Minusterm.node@->reg = next_reg(@Term.node@->reg, @Expr.node@->skip, @Expr.gparamges@);
+ @Minusterm.node@->reg = next_reg(@Term.node@->reg, @Expr.gparamges@);
}
}
}
@reg {
@Term.node@->reg = @Expr.node@->reg;
- @Term.node@->skip = 0;
if(@Term.imm@) {
@Multerm.node@->reg = @Expr.node@->reg;
} else {
- @Multerm.node@->reg = next_reg(@Term.node@->reg, @Expr.node@->skip, @Expr.gparamges@);
+ @Multerm.node@->reg = next_reg(@Term.node@->reg, @Expr.gparamges@);
}
}
@}
@i @Expr.imm@ = @Term.imm@ && @Orterm.imm@;
@reg {
- /* TODO */
@Term.node@->reg = @Expr.node@->reg;
- @Term.node@->skip = 0;
- @Orterm.node@->reg = next_reg(@Term.node@->reg, @Expr.node@->skip, @Expr.gparamges@);
+ @Orterm.node@->reg = next_reg(@Term.node@->reg, @Expr.gparamges@);
}
@}
@reg {
@Term.0.node@->reg = @Expr.node@->reg;
- @Term.1.node@->reg = next_reg(@Term.0.node@->reg, @Expr.node@->skip, @Expr.gparamges@);
+ @Term.1.node@->reg = next_reg(@Term.0.node@->reg, @Expr.gparamges@);
}
@}
@reg {
@Term.0.node@->reg = @Expr.node@->reg;
- @Term.1.node@->reg = next_reg(@Term.0.node@->reg, @Expr.node@->skip, @Expr.gparamges@);
+ @Term.1.node@->reg = next_reg(@Term.0.node@->reg, @Expr.gparamges@);
}
@}
;
if(@Minusterm.1.imm@) {
@Term.node@->reg = @Minusterm.node@->reg;
} else {
- @Term.node@->reg = next_reg(@Minusterm.1.node@->reg, @Minusterm.node@->skip, @Minusterm.gparamges@);
+ @Term.node@->reg = next_reg(@Minusterm.1.node@->reg, @Minusterm.gparamges@);
}
}
@}
if(@Multerm.1.imm@) {
@Term.node@->reg = @Multerm.node@->reg;
} else {
- @Term.node@->reg = next_reg(@Multerm.1.node@->reg, @Multerm.node@->skip, @Multerm.gparamges@);
+ @Term.node@->reg = next_reg(@Multerm.1.node@->reg, @Multerm.gparamges@);
}
}
@}
if(@Orterm.1.imm@) {
@Term.node@->reg = @Orterm.node@->reg;
} else {
- @Term.node@->reg = next_reg(@Orterm.1.node@->reg, @Orterm.node@->skip, @Orterm.gparamges@);
+ @Term.node@->reg = next_reg(@Orterm.1.node@->reg, @Orterm.gparamges@);
}
}
@}