diff --git a/c/setjmp/generated_native_darwin_arm64_llgo_test.go b/c/setjmp/generated_native_darwin_arm64_llgo_test.go
new file mode 100644
index 00000000..8da744e9
--- /dev/null
+++ b/c/setjmp/generated_native_darwin_arm64_llgo_test.go
@@ -0,0 +1,23 @@
+//go:build llgo && darwin && arm64 && !ios
+
+package setjmp_test
+
+import (
+	"github.com/goplus/lib/c"
+	"github.com/goplus/lib/c/setjmp"
+	"testing"
+)
+
+func TestGeneratedSetjmpWritesCallerBuffer(t *testing.T) {
+	var buffer [48]c.Int
+	if result := setjmp.NativeSetjmp(&buffer[0]); result != 0 {
+		t.Fatalf("initial setjmp = %d", result)
+	}
+	changed := false
+	for _, word := range buffer {
+		changed = changed || word != 0
+	}
+	if !changed {
+		t.Fatal("setjmp did not write the caller-owned buffer")
+	}
+}
diff --git a/c/setjmp/generated_native_linux_llgo_test.go b/c/setjmp/generated_native_linux_llgo_test.go
new file mode 100644
index 00000000..2844ab8a
--- /dev/null
+++ b/c/setjmp/generated_native_linux_llgo_test.go
@@ -0,0 +1,24 @@
+//go:build llgo && linux && (amd64 || arm64) && !android
+
+package setjmp_test
+
+import (
+	"github.com/goplus/lib/c/setjmp"
+	"testing"
+	"unsafe"
+)
+
+func TestGeneratedSetjmpWritesCallerBuffer(t *testing.T) {
+	var buffer setjmp.X__JmpBufTag
+	if result := buffer.NativeSetjmp(); result != 0 {
+		t.Fatalf("initial setjmp = %d", result)
+	}
+	bytes := unsafe.Slice((*byte)(unsafe.Pointer(&buffer)), unsafe.Sizeof(buffer))
+	changed := false
+	for _, b := range bytes {
+		changed = changed || b != 0
+	}
+	if !changed {
+		t.Fatal("setjmp did not write the caller-owned buffer")
+	}
+}
diff --git a/c/setjmp/libc_darwin_arm64.go b/c/setjmp/libc_darwin_arm64.go
new file mode 100644
index 00000000..b7f5bf2a
--- /dev/null
+++ b/c/setjmp/libc_darwin_arm64.go
@@ -0,0 +1,32 @@
+//go:build darwin && arm64 && !ios
+
+// Code generated by llcppg; DO NOT EDIT.
+// Classified from the common libc binding.
+
+package setjmp
+
+import (
+	"github.com/goplus/lib/c"
+	_ "unsafe"
+)
+
+//go:linkname NativeSetjmp C.setjmp
+func NativeSetjmp(_llcppg_param1 *c.Int) c.Int
+
+//go:linkname NativeLongjmp C.longjmp
+func NativeLongjmp(_llcppg_param1 *c.Int, _llcppg_param2 c.Int)
+
+//go:linkname X_setjmp C._setjmp
+func X_setjmp(_llcppg_param1 *c.Int) c.Int
+
+//go:linkname X_longjmp C._longjmp
+func X_longjmp(_llcppg_param1 *c.Int, _llcppg_param2 c.Int)
+
+//go:linkname NativeSigsetjmp C.sigsetjmp
+func NativeSigsetjmp(_llcppg_param1 *c.Int, _llcppg_param2 c.Int) c.Int
+
+//go:linkname NativeSiglongjmp C.siglongjmp
+func NativeSiglongjmp(_llcppg_param1 *c.Int, _llcppg_param2 c.Int)
+
+//go:linkname Longjmperror C.longjmperror
+func Longjmperror()
diff --git a/c/setjmp/libc_linux_amd64.go b/c/setjmp/libc_linux_amd64.go
new file mode 100644
index 00000000..62611c19
--- /dev/null
+++ b/c/setjmp/libc_linux_amd64.go
@@ -0,0 +1,65 @@
+//go:build linux && amd64 && !android
+
+// Code generated by llcppg; DO NOT EDIT.
+// Classified from the common libc binding.
+
+package setjmp
+
+import (
+	"github.com/goplus/lib/c"
+	llsignal "github.com/goplus/lib/c/signal"
+)
+
+type X__JmpBuf = [8]c.Long
+
+// llgo:link (*X__JmpBufTag).NativeX__Sigsetjmp C.__sigsetjmp
+func (self *X__JmpBufTag) NativeX__Sigsetjmp(__savemask c.Int) c.Int {
+	return 0
+}
+
+// Calling environment, plus possibly a saved signal mask.
+type X__JmpBufTag struct {
+	X__Jmpbuf       X__JmpBuf
+	X__MaskWasSaved c.Int
+	X__SavedMask    llsignal.SigsetT
+}
+
+// Store the calling environment in ENV, also saving the signal mask.
+// Return 0.
+//
+// llgo:link (*X__JmpBufTag).NativeSetjmp C.setjmp
+func (self *X__JmpBufTag) NativeSetjmp() c.Int {
+	return 0
+}
+
+// Store the calling environment in ENV, not saving the signal mask.
+// Return 0.
+//
+// llgo:link (*X__JmpBufTag).X_setjmp C._setjmp
+func (self *X__JmpBufTag) X_setjmp() c.Int {
+	return 0
+}
+
+// Jump to the environment saved in ENV, making the
+// `setjmp' call there return VAL, or 1 if VAL is 0.
+//
+// llgo:link (*X__JmpBufTag).NativeLongjmp C.longjmp
+func (self *X__JmpBufTag) NativeLongjmp(__val c.Int) {
+}
+
+// Same.  Usually `_longjmp' is used with `_setjmp', which does not save
+// the signal mask.  But it is how ENV was saved that determines whether
+// `longjmp' restores the mask; `_longjmp' is just an alias.
+//
+// llgo:link (*X__JmpBufTag).X_longjmp C._longjmp
+func (self *X__JmpBufTag) X_longjmp(__val c.Int) {
+}
+
+// Jump to the environment saved in ENV, making the
+// sigsetjmp call there return VAL, or 1 if VAL is 0.
+// Restore the signal mask if that sigsetjmp call saved it.
+// This is just an alias `longjmp'.
+//
+// llgo:link (*X__JmpBufTag).NativeSiglongjmp C.siglongjmp
+func (self *X__JmpBufTag) NativeSiglongjmp(__val c.Int) {
+}
diff --git a/c/setjmp/libc_linux_arm64.go b/c/setjmp/libc_linux_arm64.go
new file mode 100644
index 00000000..f1c5879a
--- /dev/null
+++ b/c/setjmp/libc_linux_arm64.go
@@ -0,0 +1,68 @@
+//go:build linux && arm64 && !android
+
+// Code generated by llcppg; DO NOT EDIT.
+// Classified from the common libc binding.
+
+package setjmp
+
+import (
+	"github.com/goplus/lib/c"
+	llsignal "github.com/goplus/lib/c/signal"
+)
+
+// Jump buffer contains:
+// x19-x28, x29(fp), x30(lr), (x31)sp, d8-d15.  Other registers are not
+// saved.
+type X__JmpBuf = [22]c.UlongLong
+
+// llgo:link (*X__JmpBufTag).NativeX__Sigsetjmp C.__sigsetjmp
+func (self *X__JmpBufTag) NativeX__Sigsetjmp(__savemask c.Int) c.Int {
+	return 0
+}
+
+// Calling environment, plus possibly a saved signal mask.
+type X__JmpBufTag struct {
+	X__Jmpbuf       X__JmpBuf
+	X__MaskWasSaved c.Int
+	X__SavedMask    llsignal.SigsetT
+}
+
+// Store the calling environment in ENV, also saving the signal mask.
+// Return 0.
+//
+// llgo:link (*X__JmpBufTag).NativeSetjmp C.setjmp
+func (self *X__JmpBufTag) NativeSetjmp() c.Int {
+	return 0
+}
+
+// Store the calling environment in ENV, not saving the signal mask.
+// Return 0.
+//
+// llgo:link (*X__JmpBufTag).X_setjmp C._setjmp
+func (self *X__JmpBufTag) X_setjmp() c.Int {
+	return 0
+}
+
+// Jump to the environment saved in ENV, making the
+// `setjmp' call there return VAL, or 1 if VAL is 0.
+//
+// llgo:link (*X__JmpBufTag).NativeLongjmp C.longjmp
+func (self *X__JmpBufTag) NativeLongjmp(__val c.Int) {
+}
+
+// Same.  Usually `_longjmp' is used with `_setjmp', which does not save
+// the signal mask.  But it is how ENV was saved that determines whether
+// `longjmp' restores the mask; `_longjmp' is just an alias.
+//
+// llgo:link (*X__JmpBufTag).X_longjmp C._longjmp
+func (self *X__JmpBufTag) X_longjmp(__val c.Int) {
+}
+
+// Jump to the environment saved in ENV, making the
+// sigsetjmp call there return VAL, or 1 if VAL is 0.
+// Restore the signal mask if that sigsetjmp call saved it.
+// This is just an alias `longjmp'.
+//
+// llgo:link (*X__JmpBufTag).NativeSiglongjmp C.siglongjmp
+func (self *X__JmpBufTag) NativeSiglongjmp(__val c.Int) {
+}
diff --git a/c/setjmp/llcppg.pub b/c/setjmp/llcppg.pub
new file mode 100644
index 00000000..724d7981
--- /dev/null
+++ b/c/setjmp/llcppg.pub
@@ -0,0 +1,4 @@
+T __jmp_buf X__JmpBuf
+T __jmp_buf_tag X__JmpBufTag
+T jmp_buf JmpBuf
+T sigjmp_buf SigjmpBuf