Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

sdk/lib/rossym_new/dwarfaranges.c

@@ -0,0 +1,63 @@
+/*
+ * Dwarf address ranges parsing code.
+ */
+
+#include <precomp.h>
+
+#define NDEBUG
+#include <debug.h>
+
+int
+dwarfaddrtounit(Dwarf *d, ulong addr, ulong *unit)
+{
+    DwarfBuf b;
+    int segsize, i;
+    ulong len, id, off, base, size;
+    uchar *start, *end;
+
+    memset(&b, 0, sizeof b);
+    b.d = d;
+    b.p = d->aranges.data;
+    b.ep = b.p + d->aranges.len;
+
+    while(b.p < b.ep){
+        start = b.p;
+        len = dwarfget4(&b);
+        if (!len) { b.ep = b.p - 4; return -1; }
+        if((id = dwarfget2(&b)) != 2){
+            if(b.p == nil){
+            underflow:
+                werrstr("buffer underflow reading address ranges header");
+            }else
+                werrstr("bad dwarf version 0x%x in address ranges header", id);
+            return -1;
+        }
+        off = dwarfget4(&b);
+        b.addrsize = dwarfget1(&b);
+        if(d->addrsize == 0)
+            d->addrsize = b.addrsize;
+        segsize = dwarfget1(&b);
+        USED(segsize);	/* what am i supposed to do with this? */
+        if(b.p == nil)
+            goto underflow;
+        if((i = (b.p-start) % (2*b.addrsize)) != 0)
+            b.p += 2*b.addrsize - i;
+        end = start+4+len;
+        while(b.p!=nil && b.p<end){
+            base = dwarfgetaddr(&b);
+            size = dwarfgetaddr(&b);
+            if (!size) continue;
+            if(b.p == nil)
+                goto underflow;
+            if(base <= addr && addr < base+size){
+                *unit = off;
+                return 0;
+            }
+        }
+        if(b.p == nil)
+            goto underflow;
+        b.p = end;
+    }
+    werrstr("address 0x%lux is not listed in dwarf debugging symbols", addr);
+    return -1;
+}