feat(verify): add Call trampolines for arm64, riscv64, loong64

Assisted-by: MiMo V2.5 Pro

verify/trampoline_loong64.s

@@ -0,0 +1,31 @@
+// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
+// SPDX-License-Identifier: BSD-3-Clause
+
+#include "textflag.h"
+
+// ABI0 JIT trampoline for LoongArch 64.
+//
+// enterJIT saves Go SP and RA (R1), switches to the prepared stack, and
+// jumps to the JIT function.  When the function RETs (JIRL zero, ra, 0),
+// control lands in leaveJIT.
+
+// func enterJIT(fn uintptr, stack uintptr)
+TEXT ·enterJIT(SB), NOSPLIT, $0-16
+	MOVV fn+0(FP), R4           // target function address (A0)
+	MOVV R1, savedRA(SB)        // save return address (RA)
+	MOVV R3, savedSP(SB)        // save Go stack pointer (SP)
+	MOVV stack+8(FP), R5        // load prepared stack pointer (A1)
+	MOVV 0(R5), R1              // load leaveJIT address into RA
+	ADDV $8, R5, R5             // advance past return address
+	MOVV R5, R3                 // switch to prepared stack (SP)
+	JIRL R0, R4, 0              // jump to JIT function
+
+// func leaveJIT()
+TEXT ·leaveJIT(SB), NOSPLIT, $0-0
+	MOVV savedSP(SB), R5        // restore Go stack pointer
+	MOVV R5, R3                 // restore SP
+	MOVV savedRA(SB), R1        // restore return address
+	JIRL R0, R1, 0              // return to Go caller
+
+GLOBL savedRA(SB), NOPTR, $8
+GLOBL savedSP(SB), NOPTR, $8