fix: amd64 getsp demo

2025-09-15 14:31:23 +08:00
parent 2ec5653f5e
commit 93e660a2b0
1 changed files with 2 additions and 6 deletions
--- a/_demo/c/stacksave/stacksave_amd64.go
+++ b/_demo/c/stacksave/stacksave_amd64.go
@@ -14,13 +14,9 @@ func getsp() unsafe.Pointer
 func asmFull(instruction string, regs map[string]any) uintptr { return 0 }

 func main() {
-	var spPtr uintptr
+	sp := asmFull("movq %rsp, {}", nil)

-	asmFull("movq sp, {{addr}}", map[string]any{
-		"addr": unsafe.Pointer(&spPtr),
-	})
-
-	if spPtr != uintptr(getsp()) {
+	if sp != uintptr(getsp()) {
 		panic("invalid stack pointer")
 	}
 }