gesamt: vars richtig poppen!

[uebersetzerbau-ss10.git] / gesamt / code.bfe

diff --git a/gesamt/code.bfe b/gesamt/code.bfe
index 15eb808460cc8514a40a7b70e769c88cafad0885..76175ab861406e4a53d3926abe98321e77bf09f0 100644 (file)
--- a/gesamt/code.bfe
+++ b/gesamt/code.bfe
@@ -43,8 +43,11 @@ void gen_id_eno(struct treenode *bnode)
 {
        printf("\t//gen_id_eno\n");
        KIDKIDREG2PARM(1,0);
-       printf("\taddq %%%s, %%%s\n", KIDKID_REG(1,0), KIDKID_REG(1,1));
+       KIDKIDREG2PARM(1,1);
+       KIDREG2PARM(0);
+       move(KID_REG(0), BN_REG);
        printf("\tsubq %%%s, %%%s\n", KIDKID_REG(1,1), BN_REG);
+       printf("\tsubq %%%s, %%%s\n", KIDKID_REG(1,0), BN_REG);
 }
 
 void gen_e_field(struct treenode *bnode, char *instr)
@@ -164,7 +167,9 @@ void gen_subspecial(struct treenode *bnode, short e)
        KIDKIDREG2PARM(1,0);
 
        if(e) {
-               printf("\tsubq $%d, %%%s\n", KIDKID_VAL(1,0), BN_REG);
+               if(KIDKID_VAL(1,0) != 0) {
+                       printf("\tsubq $%d, %%%s\n", KIDKID_VAL(1,0), BN_REG);
+               }
        } else {
                printf("\tsubq %%%s, %%%s\n", KIDKID_REG(1,0), BN_REG);
        }
@@ -182,16 +187,77 @@ void assign_var(struct treenode *bnode)
        printf("\tsub $%d, %%%s\n", KIDKID_VAL(0,1), KID_REG(1));
 }
 
+void make_call(struct treenode *bnode)
+{
+       int j;
+       printf("\t//params pushen\n");
+       for(j = 0; j < bnode->soffset; j++) {
+               printf("\txchg %%%s, %d(%%rsp)\n", param_reg(j), j*8);
+       }
+       printf("\t//vars pushen\n");
+       for(j = 6; j > 6 - bnode->vars; j--) {
+               printf("\tpushq %%%s\n", param_reg(j));
+       }
+
+       /* TODO: schoener machen... */
+       if(strcmp(BN_REG, "rax")!=0) {
+               printf("\t//tmp register pushen\n");
+               printf("\tpushq %%rax\n");
+               if(strcmp(BN_REG, "r10")!=0) {
+                       printf("\tpushq %%r10\n");
+               }
+       }
+       printf("\tcall %s\n", bnode->name);
+       if(strcmp(BN_REG, "rax")!=0) {
+               move("rax", BN_REG);
+               if(strcmp(BN_REG, "r10")!=0) {
+                       printf("\tpopq %%r10\n");
+               }
+               printf("\tpopq %%rax\n");
+       }
+
+       /* vars poppen */
+       for(j = 7 - bnode->vars; j < 7; j++) {
+               printf("\tpopq %%%s\n", param_reg(j));
+       }
+
+       /* params poppen */
+       for(j = 0; j < bnode->soffset; j++) {
+               printf("\tpopq %%%s\n", param_reg(j));
+       }
+}
+
+void prep_arg(struct treenode *bnode, int moveit)
+{
+       printf("\t//args-nr.: %i (%%%s) [moveit: %i]\n", bnode->soffset, param_reg(bnode->soffset), moveit);
+       if(moveit) { /* expr */
+               if((BN_REG == (char *) NULL) || (bnode->kids[1] != TREENULL && bnode->kids[1]->op == O_ID && bnode->kids[1]->kids[0] == TREENULL && bnode->kids[1]->kids[1] == TREENULL)) {
+                       if(bnode->kids[1]->name != (char *) NULL && strcmp(bnode->kids[1]->name,"this")!=0) {
+                               KIDREG2PARM(1);
+                               printf("\tpushq %%%s\n", KID_REG(1));
+                       } else {
+                               printf("\tpushq %%%s\n", param_reg(bnode->soffset));
+                       }
+               } else {
+                       printf("\tpushq %%%s\n", BN_REG);
+               }
+       } else { /* just O_ID */
+               KIDREG2PARM(0);
+               printf("\tpushq %%%s\n", KID_REG(0));
+       }
+}
+
 %}
 
 %start begin
-%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 O_ASSIGN=16 O_IF=17 O_BOOL=18 O_CALL=19
+%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 O_ASSIGN=16 O_IF=17 O_BOOL=18 O_CALL=19 O_ARG=20 O_NOTHING=21
 
 %%
 
 begin: ret # 0 # printf("\n");
 begin: assign # 0 #
 begin: ifstat # 0 #
+begin: args # 0 #
 
 
 assign: O_ASSIGN(expr, O_ID) # 1 # KIDREG2PARM(1); printf("\tmovq %%%s, %%%s\n", BN_REG, KID_REG(1));
@@ -219,8 +285,10 @@ expr: O_ID # 0 #
 expr: imm # 1 # moveimm(BN_VAL, BN_REG);
 expr: O_BOOL(expr) # 0 #
 
-expr: O_CALL # 0 # printf("\tcall %s\n", bnode->name);
-
+expr: O_CALL(expr) # 0 # make_call(bnode);
+expr: O_ARG(expr,expr) # 1 # prep_arg(bnode, 1);
+expr: O_ARG(O_ID,expr) # 1 # prep_arg(bnode, 0);
+expr: O_NOTHING # 0 #
 
 expr: O_SUB(expr,expr)          # 2 # gen_e_eno(bnode, "subq");
 expr: O_SUB(expr,O_FIELD(expr)) # 2 # gen_e_field(bnode, "subq");