cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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entry.S (950B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 *  linux/arch/arm/vfp/entry.S
      4 *
      5 *  Copyright (C) 2004 ARM Limited.
      6 *  Written by Deep Blue Solutions Limited.
      7 */
      8#include <linux/init.h>
      9#include <linux/linkage.h>
     10#include <asm/thread_info.h>
     11#include <asm/vfpmacros.h>
     12#include <asm/assembler.h>
     13#include <asm/asm-offsets.h>
     14
     15@ VFP entry point.
     16@
     17@  r0  = instruction opcode (32-bit ARM or two 16-bit Thumb)
     18@  r2  = PC value to resume execution after successful emulation
     19@  r9  = normal "successful" return address
     20@  r10 = this threads thread_info structure
     21@  lr  = unrecognised instruction return address
     22@  IRQs enabled.
     23@
     24ENTRY(do_vfp)
     25	inc_preempt_count r10, r4
     26 	ldr	r4, .LCvfp
     27	ldr	r11, [r10, #TI_CPU]	@ CPU number
     28	add	r10, r10, #TI_VFPSTATE	@ r10 = workspace
     29	ldr	pc, [r4]		@ call VFP entry point
     30ENDPROC(do_vfp)
     31
     32ENTRY(vfp_null_entry)
     33	dec_preempt_count_ti r10, r4
     34	ret	lr
     35ENDPROC(vfp_null_entry)
     36
     37	.align	2
     38.LCvfp:
     39	.word	vfp_vector