diff --git a/_demo/cabi/main.go b/_demo/cabi/main.go
deleted file mode 100644
index b64d06cc71..0000000000
--- a/_demo/cabi/main.go
+++ /dev/null
@@ -1,395 +0,0 @@
-package main
-
-import (
-	_ "unsafe"
-)
-
-const (
-	LLGoFiles = "wrap/wrap.c"
-)
-
-type point struct {
-	x int32
-	y int32
-}
-
-//go:linkname pt C.pt
-func pt(pt point) point
-
-type point1 struct {
-	x int32
-	y int32
-	z int32
-}
-
-//go:linkname pt1 C.pt1
-func pt1(pt point1) point1
-
-type point2 struct {
-	x int8
-	y int32
-	z int32
-}
-
-//go:linkname pt2 C.pt2
-func pt2(pt point2) point2
-
-type point3 struct {
-	x int8
-	y int8
-	z int8
-}
-
-//go:linkname pt3 C.pt3
-func pt3(pt point3) point3
-
-type point4 struct {
-	x int8
-	y int8
-	z int8
-	m int32
-}
-
-//go:linkname pt4 C.pt4
-func pt4(pt point4) point4
-
-type point5 struct {
-	x int8
-	y int8
-	z int8
-	m int8
-	n int8
-}
-
-//go:linkname pt5 C.pt5
-func pt5(pt point5) point5
-
-type point6 struct {
-	x int8
-	y int8
-	z int8
-	m int8
-	n int8
-	k int32
-}
-
-//go:linkname pt6 C.pt6
-func pt6(pt point6) point6
-
-type point7 struct {
-	x int8
-	y int8
-	z int8
-	m int8
-	n int8
-	k int32
-	o int8
-}
-
-//go:linkname pt7 C.pt7
-func pt7(pt point7) point7
-
-type data1 struct {
-	x int8
-	y int64
-}
-
-//go:linkname fn1 C.fn1
-func fn1(data1) data1
-
-type data2 struct {
-	x int32
-	y int64
-}
-
-//go:linkname fn2 C.fn2
-func fn2(data2) data2
-
-type data3 struct {
-	x int64
-	y int8
-}
-
-//go:linkname fn3 C.fn3
-func fn3(data3) data3
-
-type fdata1 struct {
-	x float32
-}
-
-//go:linkname ff1 C.ff1
-func ff1(fdata1) fdata1
-
-type fdata2 struct {
-	x float32
-	y float32
-}
-
-//go:linkname ff2 C.ff2
-func ff2(fdata2) fdata2
-
-type fdata2i struct {
-	x float32
-	y int32
-}
-
-//go:linkname ff2i C.ff2i
-func ff2i(fdata2i) fdata2i
-
-type fdata3 struct {
-	x float32
-	y float32
-	z float32
-}
-
-//go:linkname ff3 C.ff3
-func ff3(fdata3) fdata3
-
-type fdata4 struct {
-	x float32
-	y float32
-	z float32
-	m float32
-}
-
-//go:linkname ff4 C.ff4
-func ff4(fdata4) fdata4
-
-type fdata5 struct {
-	x float32
-	y float32
-	z float32
-	m float32
-	n float32
-}
-
-//go:linkname ff5 C.ff5
-func ff5(fdata5) fdata5
-
-type fdata2id struct {
-	x int8
-	y int8
-	z float64
-}
-
-//go:linkname ff2id C.ff2id
-func ff2id(fdata2id) fdata2id
-
-type fdata7if struct {
-	x [7]int8
-	y float32
-}
-
-//go:linkname ff7if C.ff7if
-func ff7if(fdata7if) fdata7if
-
-type fdata4if struct {
-	x float32
-	y int8
-	z float32
-	m float32
-}
-
-//go:linkname ff4if C.ff4if
-func ff4if(fdata4if) fdata4if
-
-type array struct {
-	x [8]int32
-}
-
-//go:linkname demo64 C.demo64
-func demo64(n int64) int64
-
-//go:linkname demo32 C.demo32
-func demo32(n int32) int32
-
-type struct32 struct {
-	v int32
-}
-
-//go:linkname demo32s C.demo32s
-func demo32s(v struct32) struct32
-
-type point64 struct {
-	x int64
-	y int64
-}
-
-//go:linkname pt64 C.pt64
-func pt64(pt point64) point64
-
-//go:linkname demo C.demo
-func demo(a array) array
-
-//go:linkname demo2 C.demo2
-func demo2(x int32) array
-
-type ddata1 struct {
-	x float64
-}
-
-//go:linkname dd1 C.dd1
-func dd1(d ddata1) ddata1
-
-type ddata2 struct {
-	x float64
-	y float64
-}
-
-//go:linkname dd2 C.dd2
-func dd2(d ddata2) ddata2
-
-type ddata3 struct {
-	x float64
-	y float64
-	z float64
-}
-
-//go:linkname dd3 C.dd3
-func dd3(d ddata3) ddata3
-
-//llgo:type C
-type Callback func(array, point, point1) array
-
-//go:linkname callback C.callback
-func callback(fn Callback, ar array)
-
-//llgo:type C
-type Callback1 func(array, point, point1) point
-
-//go:linkname callback1 C.callback1
-func callback1(fn Callback1, ar array)
-
-//go:linkname mycallback C.mycallback
-func mycallback(ar array, pt point, pt1 point1) point
-
-func myfn1(ar array, pt point, pt1 point1) point {
-	println("=>", ar.x[0], ar.x[1], ar.x[7], pt.x, pt.y, pt1.x, pt1.y, pt1.z)
-	return point{100, 200}
-}
-
-//export export_demo
-func export_demo(ar array) array {
-	println("=> export", ar.x[0], ar.x[1], ar.x[7])
-	return ar
-}
-
-func main() {
-	cabi_demo()
-	callback_demo()
-}
-
-func callback_demo() {
-	export_demo(array{x: [8]int32{1, 2, 3, 4, 5, 6, 7, 8}})
-
-	callback(func(ar array, pt point, pt1 point1) array {
-		println("=> callback", ar.x[0], ar.x[1], ar.x[7], pt.x, pt.y, pt1.x, pt1.y, pt1.z)
-		return array{x: [8]int32{8, 7, 6, 5, 4, 3, 2, 1}}
-	}, array{x: [8]int32{1, 2, 3, 4, 5, 6, 7, 8}})
-
-	callback1(func(ar array, pt point, pt1 point1) point {
-		println("=> callback1", ar.x[0], ar.x[1], ar.x[7], pt.x, pt.y, pt1.x, pt1.y, pt1.z)
-		return point{100, 200}
-	}, array{x: [8]int32{1, 2, 3, 4, 5, 6, 7, 8}})
-	ret := mycallback(array{x: [8]int32{1, 2, 3, 4, 5, 6, 7, 8}}, point{1, 2}, point1{1, 2, 3})
-	println("=> mycallback", ret.x, ret.y)
-	callback1(myfn1, array{x: [8]int32{1, 2, 3, 4, 5, 6, 7, 8}})
-	callback1(myfn1, array{x: [8]int32{8, 7, 6, 5, 4, 3, 2, 1}})
-	callback1(mycallback, array{x: [8]int32{10, 20, 30, 40, 50, 60, 70, 80}})
-}
-
-func cabi_demo() {
-	i32 := demo32(1024)
-	println("=> demo32", i32)
-
-	s32 := demo32s(struct32{100})
-	println("=> demo32s", s32.v)
-
-	i64 := demo64(1024)
-	println("=> demo64", i64)
-
-	p64 := pt64(point64{1024, -1024})
-	println("=> pt64", p64.x, p64.y)
-
-	r := demo(array{x: [8]int32{1, 2, 3, 4, 5, 6, 7, 8}})
-	println("=> demo", r.x[0], r.x[1])
-
-	r2 := demo2(100)
-	println("=> demo2", r2.x[0], r2.x[1], r2.x[7])
-
-	p0 := pt(point{1, 2})
-	println("=> pt0", p0.x, p0.y)
-
-	p1 := pt1(point1{1, 2, 3})
-	println("=> pt1", p1.x, p1.y, p1.z)
-
-	p2 := pt2(point2{1, 2, 3})
-	println("=> pt2", p2.x, p2.y, p2.z)
-
-	p3 := pt3(point3{1, 2, 3})
-	println("=> pt3", p3.x, p3.y, p3.z)
-
-	p4 := pt4(point4{1, 2, 3, 4})
-	println("=> pt4", p4.x, p4.y, p4.z, p4.m)
-
-	p5 := pt5(point5{1, 2, 3, 4, 5})
-	println("=> pt5", p5.x, p5.y, p5.z, p5.m, p5.n)
-
-	p6 := pt6(point6{1, 2, 3, 4, 5, 6})
-	println("=> pt6", p6.x, p6.y, p6.z, p6.m, p6.n, p6.k)
-
-	p7 := pt7(point7{1, 2, 3, 4, 5, 6, 7})
-	println("=> pt7", p7.x, p7.y, p7.z, p7.m, p7.n, p7.k, p7.o)
-
-	// skip wrap
-	fd1 := fn1(data1{1, 2})
-	println("=> fd1", fd1.x, fd1.y)
-
-	fd2 := fn2(data2{1, 2})
-	println("=> fd2", fd2.x, fd2.y)
-
-	fd3 := fn3(data3{1, 2})
-	println("=> fd3", fd3.x, fd3.y)
-
-	// float
-	f1 := ff1(fdata1{1.1})
-	println("=> f1", f1.x)
-
-	// float
-	f2 := ff2(fdata2{1.1, 2.1})
-	println("=> f2", f2.x, f2.y)
-
-	// float
-	f2i := ff2i(fdata2i{1.1, 2})
-	println("=> f2i", f2i.x, f2i.y)
-
-	// float
-	f3 := ff3(fdata3{1.1, 2.1, 3.1})
-	println("=> f3", f3.x, f3.y, f3.z)
-
-	// float
-	f4 := ff4(fdata4{1.1, 2.1, 3.1, 4.1})
-	println("=> f4", f4.x, f4.y, f4.z, f4.m)
-
-	// float
-	f5 := ff5(fdata5{1.1, 2.1, 3.1, 4.1, 5.1})
-	println("=> f5", f5.x, f5.y, f5.z, f5.m, f5.n)
-
-	f2id := ff2id(fdata2id{1, 2, 3.1})
-	println("=> f2id", f2id.x, f2id.y, f2id.z)
-
-	f7if := ff7if(fdata7if{[7]int8{1, 2, 3, 4, 5, 6, 7}, 3.1})
-	println("=> f7if", f7if.x[0], f7if.x[1], f7if.y)
-
-	f4if := ff4if(fdata4if{1.1, 2, 3.1, 4.1})
-	println("=> f4if", f4if.x, f4if.y, f4if.z, f4if.m)
-
-	d1 := dd1(ddata1{1.1})
-	println("=> dd1", d1.x)
-
-	d2 := dd2(ddata2{1.1, 2.1})
-	println("=> dd2", d2.x, d2.y)
-
-	d3 := dd3(ddata3{1.1, 2.1, 3.1})
-	println("=> dd3", d3.x, d3.y, d3.z)
-}
diff --git a/_demo/cabi/wrap/wrap.c b/_demo/cabi/wrap/wrap.c
deleted file mode 100644
index e551911851..0000000000
--- a/_demo/cabi/wrap/wrap.c
+++ /dev/null
@@ -1,325 +0,0 @@
-extern int printf(const char *format, ...);
-
-int demo32(int v) {
-    return v+100;
-}
-
-long long demo64(long long v) {
-    return v+100;
-}
-
-struct struct32 {
-     int v;
-};
-
-struct point64 {
-    long long x;
-    long long y;
-};
-
-struct point64 pt64(struct point64 pt) {
-    printf("point64: %lld %lld\n",pt.x,pt.y);
-    return pt;
-}
-
-struct struct32 demo32s(struct struct32 v) {
-    printf("struct32: %d\n",v.v);
-    struct struct32 v2 = {v.v+100};
-    return v2;
-}
-
-struct point {
-    int x;
-    int y;
-};
-
-struct point pt(struct point pt) {
-    printf("point: %d %d\n",pt.x,pt.y);
-    return pt;
-}
-
-struct point1 {
-    int x;
-    int y;
-    int z;
-};
-
-struct point1 pt1(struct point1 pt) {
-    printf("point1: %d %d %d\n",pt.x,pt.y,pt.z);
-    return pt;
-}
-
-struct point2 {
-    char x;
-    int y;
-    int z;
-};
-
-struct point2 pt2(struct point2 pt) {
-    printf("point2: %d %d %d\n",pt.x,pt.y,pt.z);
-    return pt;
-}
-
-struct point3 {
-    char x;
-    char y;
-    char z;
-};
-
-struct point3 pt3(struct point3 pt) {
-    printf("point3: %d %d %d\n",pt.x,pt.y,pt.z);
-    return pt;
-}
-
-struct point4 {
-    char x;
-    char y;
-    char z;
-    int  m;
-};
-
-struct point4 pt4(struct point4 pt) {
-    printf("point4: %d %d %d %d\n",pt.x,pt.y,pt.z,pt.m);
-    return pt;
-}
-
-struct point5 {
-    char x;
-    char y;
-    char z;
-    char m;
-    char n;
-};
-
-struct point5 pt5(struct point5 pt) {
-    printf("point5: %d %d %d %d %d\n",pt.x,pt.y,pt.z,pt.m,pt.n);
-    return pt;
-}
-
-struct point6 {
-    char x;
-    char y;
-    char z;
-    char m;
-    char n;
-    int  k;
-};
-
-struct point6 pt6(struct point6 pt) {
-    printf("point6: %d %d %d %d %d %d\n",pt.x,pt.y,pt.z,pt.m,pt.n,pt.k);
-    return pt;
-}
-
-struct point7 {
-    char x;
-    char y;
-    char z;
-    char m;
-    char n;
-    int  k;
-    char o;
-};
-
-struct point7 pt7(struct point7 pt) {
-    printf("point7: %d %d %d %d %d %d %d\n",pt.x,pt.y,pt.z,pt.m,pt.n,pt.k,pt.o);
-    return pt;
-}
-
-struct data1 {
-    char x;
-    long long y;
-};
-
-struct data1 fn1(struct data1 pt) {
-    printf("data1: %d %lld\n",pt.x,pt.y);
-    return pt;
-}
-
-struct data2 {
-    int x;
-    long long y;
-};
-
-struct data2 fn2(struct data2 pt) {
-    printf("data2: %d %lld\n",pt.x,pt.y);
-    return pt;
-}
-
-struct data3 {
-    long long x;
-    char y;
-};
-
-struct data3 fn3(struct data3 pt) {
-    printf("data3: %lld %d\n",pt.x,pt.y);
-    return pt;
-}
-
-struct fdata1 {
-    float x;
-};
-
-struct fdata1 ff1(struct fdata1 pt) {
-    printf("ff1: %f\n",pt.x);
-    return pt;
-}
-
-struct ddata1 {
-    double x;
-};
-
-struct ddata1 dd1(struct ddata1 pt) {
-    printf("dd1: %f\n",pt.x);
-    return pt;
-}
-
-struct ddata2 {
-    double x;
-    double y;
-};
-
-struct ddata2 dd2(struct ddata2 pt) {
-    printf("dd2: %f %f\n",pt.x,pt.y);
-    return pt;
-}
-
-struct ddata3 {
-    double x;
-    double y;
-    double z;
-};
-
-struct ddata3 dd3(struct ddata3 pt) {
-    printf("dd3: %f %f %f\n",pt.x,pt.y,pt.z);
-    return pt;
-}
-
-struct fdata2i {
-    float x;
-    int   y;
-};
-
-struct fdata2i ff2i(struct fdata2i pt) {
-    printf("ff2i: %f %d\n",pt.x,pt.y);
-    return pt;
-}
-
-struct fdata2 {
-    float x;
-    float y;
-};
-
-struct fdata2 ff2(struct fdata2 pt) {
-    printf("ff2: %f %f\n",pt.x,pt.y);
-    return pt;
-}
-
-struct fdata3 {
-    float x;
-    float y;
-    float z;
-};
-
-struct fdata3 ff3(struct fdata3 pt) {
-    printf("ff3: %f %f %f\n",pt.x,pt.y,pt.z);
-    return pt;
-}
-
-struct fdata4 {
-    float x;
-    float y;
-    float z;
-    float m;
-};
-
-struct fdata4 ff4(struct fdata4 pt) {
-    printf("ff4: %f %f %f %f\n",pt.x,pt.y,pt.z,pt.m);
-    return pt;
-}
-
-struct fdata5 {
-    float x;
-    float y;
-    float z;
-    float m;
-    float n;
-};
-
-struct fdata5 ff5(struct fdata5 pt) {
-    printf("ff5: %f %f %f %f %f\n",pt.x,pt.y,pt.z,pt.m,pt.n);
-    return pt;
-}
-
-struct fdata2id {
-    char     x;
-    char     y;
-    double   z;
-};
-
-struct fdata2id ff2id(struct fdata2id pt) {
-    printf("ff6: %d %d %f\n",pt.x,pt.y,pt.z);
-    return pt;
-}
-
-struct fdata7if {
-    char    x[7];
-    float    z;
-};
-
-struct fdata7if ff7if(struct fdata7if pt) {
-    printf("ff7if: %d %d %f\n",pt.x[0],pt.x[1],pt.z);
-    return pt;
-}
-
-struct fdata4if {
-    float    x;
-    char     y;
-    float    z;
-    float    m;
-};
-
-struct fdata4if ff4if(struct fdata4if pt) {
-    printf("ff4if: %f %d %f %f\n",pt.x,pt.y,pt.z,pt.m);
-    return pt;
-}
-
-struct array {
-    int x[8];
-};
-
-struct array demo(struct array a) {
-    printf("demo: %d %d %d\n",a.x[0],a.x[1],a.x[2]);
-    return a;
-}
-
-struct array demo2(int a1){
-    struct array x;
-    for (int i = 0; i < 8; i++) {
-        x.x[i] = i+a1;
-    }
-    return x;
-}
-
-void callback(struct array (*fn)(struct array ar, struct point pt, struct point1 pt1), struct array ar) {
-    demo(ar);
-    struct point pt = {1,2};
-    struct point1 pt1 = {1,2,3};
-    struct array ret = fn(ar,pt,pt1);
-    demo(ret);
-}
-
-void callback1(struct point (*fn)(struct array ar, struct point pt, struct point1 pt1), struct array ar) {
-    printf("callback1 array: %d %d %d\n",ar.x[0],ar.x[1],ar.x[7]);
-    struct point pt = {1,2};
-    struct point1 pt1 = {1,2,3};
-    struct point ret = fn(ar,pt,pt1);
-    printf("callback1 ret: %d,%d\n",ret.x,ret.y);
-}
-
-struct point mycallback(struct array ar, struct point pt, struct point1 pt1) {
-    printf("mycallback array: %d %d %d\n",ar.x[0],ar.x[1],ar.x[7]);
-    printf("mycallback pt: %d %d\n",pt.x,pt.y);
-    printf("mycallback pt1: %d %d %d\n",pt1.x,pt1.y,pt1.z);
-    struct point ret = {pt.x+pt1.x, pt.y+pt1.y};
-    return ret;
-}
diff --git a/cmd/internal/flags/flags.go b/cmd/internal/flags/flags.go
index 4159e58f62..b680bbb000 100644
--- a/cmd/internal/flags/flags.go
+++ b/cmd/internal/flags/flags.go
@@ -24,9 +24,9 @@ func AddBuildFlags(fs *flag.FlagSet) {
 	fs.StringVar(&BuildEnv, "buildenv", "", "Build environment")
 	fs.StringVar(&Target, "target", "", "Target platform (e.g., rp2040, wasi)")
 	if buildenv.Dev {
-		fs.IntVar(&AbiMode, "abi", 2, "ABI mode (default 2). 0 = none, 1 = cfunc, 2 = allfunc.")
+		fs.IntVar(&AbiMode, "abi", 0, "ABI mode (default 2). 0 = none, 1 = cfunc, 2 = allfunc.")
 	} else {
-		AbiMode = 2
+		AbiMode = 0
 	}
 }
 
diff --git a/internal/build/build.go b/internal/build/build.go
index e2fa4a10d0..faf7236fe5 100644
--- a/internal/build/build.go
+++ b/internal/build/build.go
@@ -112,7 +112,7 @@ func NewDefaultConf(mode Mode) *Config {
 		Goarch:  goarch,
 		BinPath: bin,
 		Mode:    mode,
-		AbiMode: cabi.ModeAllFunc,
+		AbiMode: cabi.ModeNone,
 		AppExt:  DefaultAppExt(goos),
 	}
 	return conf