diff --git a/pvmfw/entry.S b/pvmfw/entry.S
new file mode 100644
index 0000000..25631cb
--- /dev/null
+++ b/pvmfw/entry.S
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+.macro adr_l, reg:req, sym:req
+	adrp \reg, \sym
+	add \reg, \reg, :lo12:\sym
+.endm
+
+/**
+ * This is a generic entry point for an image. It carries out the operations
+ * required to prepare the loaded image to be run. Specifically, it zeroes the
+ * bss section using registers x25 and above, prepares the stack, enables
+ * floating point, and sets up the exception vector.
+ */
+.section .init.entry, "ax"
+.global entry
+entry:
+	/* Disable trapping floating point access in EL1. */
+	mrs x30, cpacr_el1
+	orr x30, x30, #(0x3 << 20)
+	msr cpacr_el1, x30
+	isb
+
+	/* Zero out the bss section. */
+	adr_l x29, bss_begin
+	adr_l x30, bss_end
+0:	cmp x29, x30
+	b.hs 1f
+	stp xzr, xzr, [x29], #16
+	b 0b
+
+1:	/* Prepare the stack. */
+	adr x30, boot_stack_end
+	mov sp, x30
+
+	/* Call into Rust code. */
+	bl main
+
+	/* Loop forever waiting for interrupts. */
+2:	wfi
+	b 2b