diff --git a/src/cmd/5g/gsubr.c b/src/cmd/5g/gsubr.c
index f2a882bd6f..133a21b3e8 100644
--- a/src/cmd/5g/gsubr.c
+++ b/src/cmd/5g/gsubr.c
@@ -1079,7 +1079,7 @@ checkoffset(Addr *a, int canemitcode)
 	if(a->offset < unmappedzero)
 		return;
 	if(!canemitcode)
-		fatal("checkoffset %#llx, cannot emit code", a->offset);
+		fatal("checkoffset %#x, cannot emit code", a->offset);
 
 	// cannot rely on unmapped nil page at 0 to catch
 	// reference with large offset.  instead, emit explicit
diff --git a/src/cmd/8g/gsubr.c b/src/cmd/8g/gsubr.c
index b686add837..8ed7e55645 100644
--- a/src/cmd/8g/gsubr.c
+++ b/src/cmd/8g/gsubr.c
@@ -1659,7 +1659,7 @@ checkoffset(Addr *a, int canemitcode)
 	if(a->offset < unmappedzero)
 		return;
 	if(!canemitcode)
-		fatal("checkoffset %#llx, cannot emit code", a->offset);
+		fatal("checkoffset %#x, cannot emit code", a->offset);
 
 	// cannot rely on unmapped nil page at 0 to catch
 	// reference with large offset.  instead, emit explicit
diff --git a/src/cmd/8l/span.c b/src/cmd/8l/span.c
index b047908104..7d28fa279f 100644
--- a/src/cmd/8l/span.c
+++ b/src/cmd/8l/span.c
@@ -110,7 +110,7 @@ span1(Sym *s)
 	s->size = c;
 
 	if(debug['a'] > 1) {
-		print("span1 %s %lld (%d tries)\n %.6ux", s->name, s->size, n, 0);
+		print("span1 %s %d (%d tries)\n %.6ux", s->name, s->size, n, 0);
 		for(i=0; i<s->np; i++) {
 			print(" %.2ux", s->p[i]);
 			if(i%16 == 15)
@@ -123,7 +123,7 @@ span1(Sym *s)
 			Reloc *r;
 			
 			r = &s->r[i];
-			print(" rel %#.4ux/%d %s%+lld\n", r->off, r->siz, r->sym->name, r->add);
+			print(" rel %#.4ux/%d %s%+d\n", r->off, r->siz, r->sym->name, r->add);
 		}
 	}
 }
diff --git a/src/cmd/ld/data.c b/src/cmd/ld/data.c
index c1e455c340..3ca7f0941c 100644
--- a/src/cmd/ld/data.c
+++ b/src/cmd/ld/data.c
@@ -399,7 +399,7 @@ blk(Sym *allsym, int32 addr, int32 size)
 		for(; addr < sym->value+sym->size; addr++)
 			cput(0);
 		if(addr != sym->value+sym->size) {
-			diag("phase error: addr=%#llx value+size=%#llx", addr, sym->value+sym->size);
+			diag("phase error: addr=%#llx value+size=%#llx", (vlong)addr, (vlong)sym->value+sym->size);
 			errorexit();
 		}
 	}
@@ -464,7 +464,7 @@ codeblk(int32 addr, int32 size)
 			continue;
 		}
 			
-		Bprint(&bso, "%.6llux\t%-20s | %P\n", sym->value, sym->name, p);
+		Bprint(&bso, "%.6llux\t%-20s | %P\n", (vlong)sym->value, sym->name, p);
 		for(p = p->link; p != P; p = p->link) {
 			if(p->link != P)
 				epc = p->link->pc;
@@ -725,7 +725,7 @@ dodata(void)
 			s->type = SDATA;
 		if(s->np > s->size)
 			diag("%s: initialize bounds (%lld < %d)",
-				s->name, s->size, s->np);
+				s->name, (vlong)s->size, s->np);
 	}
 	
 	/*
diff --git a/src/cmd/ld/dwarf.c b/src/cmd/ld/dwarf.c
index adffb890a7..7063078406 100644
--- a/src/cmd/ld/dwarf.c
+++ b/src/cmd/ld/dwarf.c
@@ -1004,7 +1004,7 @@ defgotype(Sym *gotype)
 			      gotype->r[i].siz,
 			      gotype->r[i].type,
 			      gotype->r[i].sym->name,
-			      gotype->r[i].add);
+			      (vlong)gotype->r[i].add);
 		}
 	}
 
@@ -1927,7 +1927,7 @@ writelines(void)
 
 			lline = lh->line + q->line - lh->absline;
 			if (debug['v'] > 1)
-				print("%6llux %s[%lld] %P\n", q->pc, histfile[lh->file], lline, q);
+				print("%6llux %s[%lld] %P\n", (vlong)q->pc, histfile[lh->file], lline, q);
 
 			if (q->line == lc)
 				continue;
diff --git a/src/cmd/ld/lib.c b/src/cmd/ld/lib.c
index 0aefb3e92b..ae77247c34 100644
--- a/src/cmd/ld/lib.c
+++ b/src/cmd/ld/lib.c
@@ -915,7 +915,7 @@ pclntab(void)
 			if(p->line == oldlc || p->as == ATEXT || p->as == ANOP) {
 				if(debug['O'])
 					Bprint(&bso, "%6llux %P\n",
-						p->pc, p);
+						(vlong)p->pc, p);
 				continue;
 			}
 			if(debug['O'])
@@ -952,7 +952,7 @@ pclntab(void)
 						Bprint(&bso, " lc%d(%d,%d)\n",
 							s, 0, s);
 					Bprint(&bso, "%6llux %P\n",
-						p->pc, p);
+						(vlong)p->pc, p);
 				}
 				lcsize += 5;
 				continue;
@@ -964,14 +964,14 @@ pclntab(void)
 				if(debug['O']) {
 					Bprint(&bso, " lc+%d(%d)\n", s, 0+s);
 					Bprint(&bso, "%6llux %P\n",
-						p->pc, p);
+						(vlong)p->pc, p);
 				}
 			} else {
 				*bp = 64-s;	/* 65-128 -lc */
 				if(debug['O']) {
 					Bprint(&bso, " lc%d(%d)\n", s, 64-s);
 					Bprint(&bso, "%6llux %P\n",
-						p->pc, p);
+						(vlong)p->pc, p);
 				}
 			}
 			lcsize++;
diff --git a/src/cmd/prof/main.c b/src/cmd/prof/main.c
index e57c161536..f36759cd32 100644
--- a/src/cmd/prof/main.c
+++ b/src/cmd/prof/main.c
@@ -193,22 +193,22 @@ amd64_ppword(uvlong w)
 void
 x86_regprint(void)
 {
-	fprint(2, "ax\t0x%llux\n", ureg_x86.ax);
-	fprint(2, "bx\t0x%llux\n", ureg_x86.bx);
-	fprint(2, "cx\t0x%llux\n", ureg_x86.cx);
-	fprint(2, "dx\t0x%llux\n", ureg_x86.dx);
-	fprint(2, "si\t0x%llux\n", ureg_x86.si);
-	fprint(2, "di\t0x%llux\n", ureg_x86.di);
-	fprint(2, "bp\t0x%llux\n", ureg_x86.bp);
-	fprint(2, "ds\t0x%llux\n", ureg_x86.ds);
-	fprint(2, "es\t0x%llux\n", ureg_x86.es);
-	fprint(2, "fs\t0x%llux\n", ureg_x86.fs);
-	fprint(2, "gs\t0x%llux\n", ureg_x86.gs);
-	fprint(2, "cs\t0x%llux\n", ureg_x86.cs);
-	fprint(2, "flags\t0x%llux\n", ureg_x86.flags);
-	fprint(2, "pc\t0x%llux\n", ureg_x86.pc);
-	fprint(2, "sp\t0x%llux\n", ureg_x86.sp);
-	fprint(2, "ss\t0x%llux\n", ureg_x86.ss);
+	fprint(2, "ax\t0x%ux\n", ureg_x86.ax);
+	fprint(2, "bx\t0x%ux\n", ureg_x86.bx);
+	fprint(2, "cx\t0x%ux\n", ureg_x86.cx);
+	fprint(2, "dx\t0x%ux\n", ureg_x86.dx);
+	fprint(2, "si\t0x%ux\n", ureg_x86.si);
+	fprint(2, "di\t0x%ux\n", ureg_x86.di);
+	fprint(2, "bp\t0x%ux\n", ureg_x86.bp);
+	fprint(2, "ds\t0x%ux\n", ureg_x86.ds);
+	fprint(2, "es\t0x%ux\n", ureg_x86.es);
+	fprint(2, "fs\t0x%ux\n", ureg_x86.fs);
+	fprint(2, "gs\t0x%ux\n", ureg_x86.gs);
+	fprint(2, "cs\t0x%ux\n", ureg_x86.cs);
+	fprint(2, "flags\t0x%ux\n", ureg_x86.flags);
+	fprint(2, "pc\t0x%ux\n", ureg_x86.pc);
+	fprint(2, "sp\t0x%ux\n", ureg_x86.sp);
+	fprint(2, "ss\t0x%ux\n", ureg_x86.ss);
 }
 
 int