scc

commit 29ccac8d84406c05b0b6a444da9daa597c7658f3
parent 0fed41f4804eb01cb3e9b2a532df0b4adc243261
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Wed, 30 May 2018 20:42:13 +0100

[as] Add newsect()

We need a list of segments to run over them and calculate the
size base address of every segment.

Diffstat:
M
ld/coff32.c
 | 
2
+-
M
ld/ld.h
 | 
7
++++++-
M
ld/obj.c
 | 
17
+++++++++++++++++

3 files changed, 24 insertions(+), 2 deletions(-)
diff --git a/ld/coff32.c b/ld/coff32.c
@@ -133,7 +133,7 @@ readsects(Obj *obj, long off)
 		}
 		sym->size += p->s_size;
 		obj->sections[i] = sym;
-		
+		newsect(sym);
 	}
 
 	return 0;
diff --git a/ld/ld.h b/ld/ld.h
@@ -26,6 +26,10 @@ struct obj {
 	struct obj *next, *prev;
 };
 
+enum symflgs {
+	SSECT = 1 << 0,
+};
+
 struct symbol {
 	char *name;
 	char type;
@@ -34,7 +38,7 @@ struct symbol {
 	TUINT base;
 	TUINT value;
 	Obj *where;
-	struct symbol *hash;
+	struct symbol *hash, *next;
 };
 
 struct objfmt {
@@ -48,6 +52,7 @@ extern Obj *newobj(char *fname, char *member, FILE *fp);
 extern void delobj(Obj *obj);
 extern void pop(Obj *obj);
 extern void push(Obj *obj);
+extern void newsect(Symbol *sym);
 extern Symbol *lookup(char *name);
 
 /* main.c */
diff --git a/ld/obj.c b/ld/obj.c
@@ -14,6 +14,7 @@ Obj *objlst;
 static Obj *objtail;
 
 Symbol *sectlst;
+static Symbol *secttail;
 static Symbol *symtbl[NR_SYM_HASH];
 
 /*
@@ -89,6 +90,22 @@ newobj(char *fname, char *member, FILE *fp)
 	return obj;
 }
 
+void
+newsect(Symbol *sym)
+{
+	if (sym->flags & SSECT)
+		return;
+
+	if (!sectlst) {
+		secttail = sectlst = sym;
+	} else {
+		secttail->next = sym;
+		secttail = sym;
+	}
+
+	sym->flags |= SSECT;
+}
+
 static unsigned
 hash(char *s)
 {