diff options
Diffstat (limited to 'arch/arm/include/asm/insn.h')
| -rw-r--r-- | arch/arm/include/asm/insn.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/include/asm/insn.h b/arch/arm/include/asm/insn.h index 5475cbf9fb6b..faf3d1c28368 100644 --- a/arch/arm/include/asm/insn.h +++ b/arch/arm/include/asm/insn.h @@ -2,6 +2,23 @@ #ifndef __ASM_ARM_INSN_H #define __ASM_ARM_INSN_H +#include <linux/types.h> + +/* + * Avoid a literal load by emitting a sequence of ADD/LDR instructions with the + * appropriate relocations. The combined sequence has a range of -/+ 256 MiB, + * which should be sufficient for the core kernel as well as modules loaded + * into the module region. (Not supported by LLD before release 14) + */ +#define LOAD_SYM_ARMV6(reg, sym) \ + " .globl " #sym " \n\t" \ + " .reloc 10f, R_ARM_ALU_PC_G0_NC, " #sym " \n\t" \ + " .reloc 11f, R_ARM_ALU_PC_G1_NC, " #sym " \n\t" \ + " .reloc 12f, R_ARM_LDR_PC_G2, " #sym " \n\t" \ + "10: sub " #reg ", pc, #8 \n\t" \ + "11: sub " #reg ", " #reg ", #4 \n\t" \ + "12: ldr " #reg ", [" #reg ", #0] \n\t" + static inline unsigned long arm_gen_nop(void) { |