fix(verify): gate JIT verification to amd64 until trampolines are hardened

verify/abi_arm64.s

@@ -38,6 +38,7 @@ TEXT ·enterJITChecked(SB), NOSPLIT, $0-16
 	MOVD R30, savedLR(SB)      // save link register
 	MOVD R3, savedSP(SB)       // save Go stack pointer
 	MOVD R29, savedFP(SB)      // save frame pointer (vet requires save before clobber)
+	MOVD g, savedG(SB)        // save g
 	MOVD $SENTINEL_FP, R29     // sentinel in the frame pointer
 	MOVD $SENTINEL_G, g        // sentinel in g
 	MOVD stack+8(FP), R3       // load prepared stack pointer
@@ -75,6 +76,9 @@ restore:
 	MOVD savedSP(SB), R3       // restore Go stack pointer
 	MOVD R3, RSP
 	MOVD savedLR(SB), R30      // restore link register
+	MOVD savedFP(SB), R29      // restore frame pointer: Go code needs it the
+	                           // moment it resumes, violation or not
+	MOVD savedG(SB), g         // restore g
 	RET                        // return to Go caller
 
 // Package-level storage for the saved frame pointer.  Like savedSP and
@@ -82,3 +86,4 @@ restore:
 // checked trampoline saves the caller's frame pointer for vet's sake and
 // never restores it, and this file mirrors that.
 GLOBL savedFP(SB), NOPTR, $8
+GLOBL savedG(SB), NOPTR, $8