insn.h (71af75b6929458d85f63c0649dc26d6f4c19729e) insn.h (7b9896c352073156a325c3bb0dc4c46e06e2a468)
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_ARM_INSN_H
3#define __ASM_ARM_INSN_H
4
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_ARM_INSN_H
3#define __ASM_ARM_INSN_H
4
5#include <linux/types.h>
6
7/*
8 * Avoid a literal load by emitting a sequence of ADD/LDR instructions with the
9 * appropriate relocations. The combined sequence has a range of -/+ 256 MiB,
10 * which should be sufficient for the core kernel as well as modules loaded
11 * into the module region. (Not supported by LLD before release 14)
12 */
13#if !(defined(MODULE) && defined(CONFIG_ARM_MODULE_PLTS)) && \
14 !(defined(CONFIG_LD_IS_LLD) && CONFIG_LLD_VERSION < 140000)
15#define LOAD_SYM_ARMV6(reg, sym) \
16 " .globl " #sym " \n\t" \
17 " .reloc 10f, R_ARM_ALU_PC_G0_NC, " #sym " \n\t" \
18 " .reloc 11f, R_ARM_ALU_PC_G1_NC, " #sym " \n\t" \
19 " .reloc 12f, R_ARM_LDR_PC_G2, " #sym " \n\t" \
20 "10: sub " #reg ", pc, #8 \n\t" \
21 "11: sub " #reg ", " #reg ", #4 \n\t" \
22 "12: ldr " #reg ", [" #reg ", #0] \n\t"
23#else
24#define LOAD_SYM_ARMV6(reg, sym) \
25 " ldr " #reg ", =" #sym " \n\t" \
26 " ldr " #reg ", [" #reg "] \n\t"
27#endif
28
5static inline unsigned long
6arm_gen_nop(void)
7{
8#ifdef CONFIG_THUMB2_KERNEL
9 return 0xf3af8000; /* nop.w */
10#else
11 return 0xe1a00000; /* mov r0, r0 */
12#endif

--- 18 unchanged lines hidden --- 		29static inline unsigned long
30arm_gen_nop(void)
31{
32#ifdef CONFIG_THUMB2_KERNEL
33 return 0xf3af8000; /* nop.w */
34#else
35 return 0xe1a00000; /* mov r0, r0 */
36#endif

--- 18 unchanged lines hidden ---