#define BFEHAX
#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
#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
#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 */
#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); }
+
+#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>
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_imm(struct treenode *bnode, char *instr)
{
- printf("\t%s $%li, %%%s\n", instr, KID_VAL(1), KID_REG(0));
- move(KID_REG(0), BN_REG);
+ printf("\t//gen_e_imm(%s)\n", instr);
+ KIDREG2ID(0);
+ KIDREG2ID(1);
+ /* man kann sich ein move der konstante bei der multiplikation ersparen */
+ if(strcmp(instr, "imulq") == 0) {
+ printf("\timulq $%d, %%%s, %%%s\n", KID_VAL(1), KID_REG(0), BN_REG);
+ } else {
+ printf("\t%s $%d, %%%s\n", instr, KID_VAL(1), KID_REG(0));
+ move(KID_REG(0), BN_REG);
+ }
}
void gen_imm_eno(struct treenode *bnode, char *instr)
{
- moveimm(KID_VAL(0), BN_REG);
+ printf("\t//gen_imm_eno(%s)\n", instr);
+ KIDREG2ID(0);
KIDREG2PARM(1);
- printf("\tsubq %%%s, %%%s\n", KID_REG(1), BN_REG);
+ /* man kann sich ein move der konstante bei der multiplikation ersparen */
+ if(strcmp(instr, "imulq") == 0) {
+ printf("\timulq $%d, %%%s, %%%s\n", KID_VAL(0), KID_REG(1), BN_REG);
+ } else if(strcmp(instr, "addq") == 0) {
+ printf("\taddq $%d, %%%s\n", KID_VAL(0), BN_REG);
+ } else { /* subq */
+ moveimm(KID_VAL(0), BN_REG);
+ printf("\t%s %%%s, %%%s\n", instr, KID_REG(1), 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) {
+ 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) {
+ if(strcmp("e", op) == 0) {
+ printf("\tcmp $%d, %%%s\n", KID_VAL(0), KID_REG(1));
+ } else {
+ moveimm(KID_VAL(0), BN_REG);
+ printf("\tcmp %%%s, %%%s\n", KID_REG(1), BN_REG);
+ }
+ }
+ 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);
+ }
}
%}
%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 O_ADD=9 O_NUM=10
+%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("\n");
-ret: O_RET(expr) # 2 # move(BN_REG, "rax"); func_footer();
+ret: O_RET(retexpr) # 2 # printf("\t//o_ret(expr)\n"); move(BN_REG, "rax"); func_footer();
+
+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 # 1 # if(bnode->param_index > -1) move(param_reg(bnode->param_index), BN_REG);
+expr: O_ID # 0 #
expr: imm # 1 # moveimm(BN_VAL, BN_REG);
-expr: O_SUB(expr,exprno) # 1 # gen_e_eno(bnode, "subq");
-expr: O_SUB(expr,imm) # 2 # gen_e_imm(bnode, "subq");
-expr: O_SUB(imm,exprno) # 3 # gen_imm_eno(bnode, "subq");
+expr: O_SUB(expr,expr) # 1 # gen_e_eno(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(O_ID,O_MUL(O_MONE,expr)) # 1 # gen_lea(bnode,0);
+expr: O_SUB(O_ID,O_MUL(O_MTWO,expr)) # 1 # gen_lea(bnode,0);
+expr: O_SUB(O_ID,O_MUL(O_MFOUR,expr)) # 1 # gen_lea(bnode,0);
+expr: O_SUB(O_ID,O_MUL(O_MEIGHT,expr)) # 1 # gen_lea(bnode,0);
+
+expr: O_SUB(O_ID,O_MUL(expr,O_MONE)) # 1 # gen_lea(bnode,1);
+expr: O_SUB(O_ID,O_MUL(expr,O_MTWO)) # 1 # gen_lea(bnode,1);
+expr: O_SUB(O_ID,O_MUL(expr,O_MFOUR)) # 1 # gen_lea(bnode,1);
+expr: O_SUB(O_ID,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) # 2 # gen_imm_eno(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_OR(expr,expr) # 1 # gen_e_eno(bnode, "orq");
+expr: O_OR(expr,imm) # 2 # gen_e_imm(bnode, "orq");
-expr: O_ADD(expr,exprno) # 1 # gen_e_eno(bnode, "addq");
-expr: O_ADD(imm,expr) # 2 # gen_e_imm(bnode, "addq");
+expr: O_LESS(expr,expr) # 3 # gen_eqless(bnode, "l", 1, 1, 0);
+expr: O_LESS(expr,imm) # 3 # gen_eqless(bnode, "l", 1, 0, 0);
+expr: O_LESS(imm,expr) # 3 # gen_eqless(bnode, "l", 0, 1, 0);
-expr: O_MUL(expr,exprno) # 1 # gen_e_eno(bnode, "imulq");
-expr: O_MUL(expr,imm) # 2 # gen_e_imm(bnode, "imulq");
+expr: O_EQ(expr,expr) # 3 # gen_eqless(bnode, "e", 1, 1, 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_OR(expr,exprno) # 1 # gen_e_eno(bnode, "orq");
-expr: O_OR(expr,imm) # 2 # gen_e_imm(bnode, "orq");
+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);
-exprno: O_ID # 0 # /* brauchen wir nicht 'zwischenlagern', weil nur gelesen wird */
-exprno: expr
-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_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_NUM # 0 #
+imm: O_MONE # 0 #
+imm: O_MTWO # 0 #
+imm: O_MFOUR # 0 #
+imm: O_MEIGHT # 0 #
%%
projects / uebersetzerbau-ss10.git / blobdiff