X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=codea%2Fcode.bfe;h=e88f2eb2ec87603f03b18a2a432921a2af0cbdd1;hb=54e11007271b762cb34aa73c12fe0b36571db5d8;hp=be6122119d85e535c428273d2e62bf526b7ebbd8;hpb=6278c4628881cfda291dc7060f8cae4dcfb24277;p=uebersetzerbau-ss10.git

diff --git a/codea/code.bfe b/codea/code.bfe
index be61221..e88f2eb 100644
--- a/codea/code.bfe
+++ b/codea/code.bfe
@@ -1,26 +1,262 @@
 %{
 #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
+
+/* 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>
 #include <stdlib.h>
 #include <assert.h>
 #include "tree.h"
 #include "chelper.h"
 
+void gen_e_eno(struct treenode *bnode, char *instr)
+{
+	printf("\t//gen_e_eno(%s)\n", instr);
+	KIDREG2ID(0);
+	KIDREG2PARM(1);
+	printf("\t%s %%%s, %%%s\n", instr, KID_REG(1), KID_REG(0));
+}
+
+void gen_e_field(struct treenode *bnode, char *instr)
+{
+	printf("\t//gen_e_field(%s)\n", instr);
+	KIDREG2ID(0);
+	KIDKIDREG2PARM(1,0);
+	printf("\t%s %d(%%%s), %%%s\n", instr, bnode->kids[1]->soffset * 8, KIDKID_REG(1,0), KID_REG(0));
+}
+
+void gen_field_imm(struct treenode *bnode)
+{
+	printf("\t//gen_field_imm\n");
+	KIDKIDREG2PARM(0,0);
+	KIDREG2ID(1);
+
+	if(KID_VAL(1) == 1 && strcmp(KID_REG(0), BN_REG) == 0) {
+		printf("\t//multiplikation mit 1 wegoptimiert\n");
+	} else {
+		printf("\timulq $%d, %d(%%%s), %%%s\n", KID_VAL(1), bnode->kids[0]->soffset * 8, KIDKID_REG(0, 0), BN_REG);
+	}
+}
+
+void gen_e_imm(struct treenode *bnode, char *instr)
+{
+	printf("\t//gen_e_imm(%s)\n", instr);
+	KIDREG2PARM(0);
+	KIDREG2ID(1);
+	/* man kann sich ein move der konstante bei der multiplikation ersparen */
+	if(strcmp(instr, "imulq") == 0) {
+		if(KID_VAL(1) == 1 && strcmp(KID_REG(0), BN_REG) == 0) {
+			printf("\t//multiplikation mit 1 wegoptimiert\n");
+		} else {
+			printf("\timulq $%d, %%%s, %%%s\n", KID_VAL(1), KID_REG(0), BN_REG);
+		}
+	} else {
+		if(strcmp(instr, "subq") == 0 && KID_VAL(1) == 0) {
+			printf("\t//subtraktion mit 0 wegoptimiert\n");
+			move(KID_REG(0), BN_REG);
+		} else {
+			move(KID_REG(0), BN_REG);
+			printf("\t%s $%d, %%%s\n", instr, KID_VAL(1), BN_REG);
+		}
+	}
+}
+
+void gen_imm_field(struct treenode *bnode)
+{
+	printf("\t//gen_imm_field\n");
+	KIDREG2ID(0);
+	KIDKIDREG2PARM(1, 0);
+
+	moveimm(KID_VAL(0), BN_REG);
+	printf("\tsubq %d(%%%s), %%%s\n", bnode->kids[1]->soffset * 8, KIDKID_REG(1, 0), BN_REG);
+}
+
+void gen_imm_eno(struct treenode *bnode, char *instr)
+{
+	printf("\t//gen_imm_eno(%s)\n", instr);
+	KIDREG2ID(0);
+	KIDREG2PARM(1);
+	/* man kann sich ein move der konstante bei der multiplikation ersparen */
+	if(strcmp(instr, "imulq") == 0) {
+		if(KID_VAL(0) == 1 && strcmp(KID_REG(1), BN_REG) == 0) {
+			printf("\t//multiplikation mit 1 wegoptimiert\n");
+		} else {
+			printf("\timulq $%d, %%%s, %%%s\n", KID_VAL(0), KID_REG(1), BN_REG);
+		}
+	} else { /* addq */
+		printf("\taddq $%d, %%%s\n", KID_VAL(0), BN_REG);
+	}
+}
+
+void gen_eqless(struct treenode *bnode, char *op, short e0, short e1, short deep)
+{
+	printf("\t//gen_eqless_%i%i @ %i\n", e0, e1, deep);
+	if(e0) { KIDREG2PARM(0); } else { KIDREG2ID(0); }
+	if(e1) { KIDREG2PARM(1); } else { KIDREG2ID(1); }
+
+	if(e0 && e1) {
+		if(deep) {
+			KIDKIDREG2PARM(1,0);
+			printf("\tcmp %d(%%%s), %%%s\n", bnode->kids[1]->soffset *8, KIDKID_REG(1,0), KID_REG(0));
+		} else {
+			printf("\tcmp %%%s, %%%s\n", KID_REG(1), KID_REG(0));
+		}
+	} else if(e0 && !e1) {
+		if (deep == 0) {
+			printf("\tcmp $%d, %%%s\n", KID_VAL(1), KID_REG(0));
+		} else if (deep == 1) {
+			KIDKIDREG2PARM(0,0);
+			printf("\tcmp $%d, %%%s\n", KID_VAL(1), KIDKID_REG(0,0));
+		} else if (deep == 2) {
+			KIDKIDKIDREG2PARM(0,0,0);
+			printf("\tcmp $%d, %%%s\n", KID_VAL(1), KIDKIDKID_REG(0,0,0));
+		}
+	} else if(!e0 && e1) {
+			printf("\tcmp $%d, %%%s\n", KID_VAL(0), KID_REG(1));
+	}
+	printf("\tset%s %%%s\n", op, reg_64to8l(BN_REG));
+	printf("\tand $1, %%%s\n", BN_REG);
+}
+
+void gen_lea(struct treenode *bnode, short e)
+{
+	printf("\t//gen_lea(e: %i)\n", e);
+	KIDREG2PARM(0);
+	if(e) {
+		KIDKIDREG2PARM(1,0);
+		printf("\tlea (%%%s,%%%s,%d), %%%s\n", KID_REG(0), KIDKID_REG(1,0), -1 * KIDKID_VAL(1,1), BN_REG);
+	} else {
+		KIDKIDREG2PARM(1,1);
+		printf("\tlea (%%%s,%%%s,%d), %%%s\n", KID_REG(0), KIDKID_REG(1,1), -1 * KIDKID_VAL(1,0), BN_REG);
+	}
+}
+
+void gen_subspecial(struct treenode *bnode, short e)
+{
+	/* tritt z.b. bei snafu_05.0 auf */
+	printf("\t//gen_subspecial(%i)\n", e);
+	KIDREG2ID(0);
+	KIDKIDREG2PARM(1,0);
+
+	if(e) {
+		printf("\tsubq $%d, %%%s\n", KIDKID_VAL(1,0), BN_REG);
+	} else {
+		printf("\tsubq %%%s, %%%s\n", KIDKID_REG(1,0), BN_REG);
+	}
+	if(e) KIDKIDREG2PARM(1,1);
+	printf("\taddq %%%s, %%%s\n", KIDKID_REG(1,1), BN_REG);
+}
+
 %}
 
 %start begin
-%term O_RET=1 O_NOT=2 O_SUB=3 O_MUL=4 O_OR=5 O_LESS=6 O_EQ=7 O_ID=8
+%term O_RET=1 O_NULL=2 O_SUB=3 O_MUL=4 O_OR=5 O_LESS=6 O_EQ=7 O_ID=8 O_ADD=9 O_NUM=10 O_FIELD=11 O_MTWO=12 O_MFOUR=13 O_MEIGHT=14 O_MONE=15
 
 %%
 
-begin: ret # 0 # printf("// end\n");
-ret: O_RET(expr) # 1 # move(bnode->reg, "rax"); ret();
+begin: ret # 0 # printf("\n");
+ret: O_RET(retexpr) # 2 # printf("\t//o_ret(expr)\n"); move(BN_REG, "rax"); func_footer();
 
-expr: O_ID # 1 # if(bnode->param_index > -1) move(param_reg(bnode->param_index), bnode->reg);
+retexpr: O_ID # 1 # printf("\t//retexpr\n"); if(bnode->param_index > -1) move(param_reg(bnode->param_index), BN_REG);
+retexpr: expr
 
-%%
+expr: O_ID # 0 #
+expr: imm # 1 # moveimm(BN_VAL, BN_REG);
+
+
+expr: O_SUB(expr,expr)          # 2 # gen_e_eno(bnode, "subq");
+expr: O_SUB(expr,O_FIELD(expr)) # 2 # gen_e_field(bnode, "subq");
+expr: O_SUB(expr,imm)           # 1 # gen_e_imm(bnode, "subq");
 
+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_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_MEIGHT)) # 1 # gen_lea(bnode,1);
+
+
+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)    # 1 # gen_imm_eno(bnode, "addq");
+
+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_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,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_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(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);
+
+
+imm: O_ADD(imm,imm)  # 0 # BN_VAL = KID_VAL(0) + KID_VAL(1);
+imm: O_SUB(imm,imm)  # 0 # BN_VAL = KID_VAL(0) - KID_VAL(1);
+imm: O_MUL(imm,imm)  # 0 # BN_VAL = KID_VAL(0) * KID_VAL(1);
+imm: O_LESS(imm,imm) # 0 # BN_VAL = KID_VAL(0) < KID_VAL(1) ? 1 : 0;
+imm: O_EQ(imm,imm)   # 0 # BN_VAL = KID_VAL(0) == KID_VAL(1) ? 1 : 0;
+imm: O_OR(imm,imm)   # 0 # BN_VAL = KID_VAL(0) | KID_VAL(1);
+imm: O_NUM # 0 #
+imm: O_MONE # 0 #
+imm: O_MTWO # 0 #
+imm: O_MFOUR # 0 #
+imm: O_MEIGHT # 0 #
+imm: O_NULL # 0 #
+
+%%
 
 /* vim: filetype=c
  */