| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * linux/arch/arm/vfp/entry.S |
| * |
| * Copyright (C) 2004 ARM Limited. |
| * Written by Deep Blue Solutions Limited. |
| */ |
| #include <linux/init.h> |
| #include <linux/linkage.h> |
| #include <asm/thread_info.h> |
| #include <asm/vfpmacros.h> |
| #include <asm/assembler.h> |
| #include <asm/asm-offsets.h> |
| |
| @ VFP entry point. |
| @ |
| @ r0 = instruction opcode (32-bit ARM or two 16-bit Thumb) |
| @ r2 = PC value to resume execution after successful emulation |
| @ r9 = normal "successful" return address |
| @ r10 = this threads thread_info structure |
| @ lr = unrecognised instruction return address |
| @ IRQs enabled. |
| @ |
| ENTRY(do_vfp) |
| mov r1, r10 |
| str lr, [sp, #-8]! |
| add r3, sp, #4 |
| str r9, [r3] |
| bl vfp_entry |
| ldr pc, [sp], #8 |
| ENDPROC(do_vfp) |
