diff options
Diffstat (limited to 'arch/arm/include/asm/macro.h')
| -rw-r--r-- | arch/arm/include/asm/macro.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h index ec0171e0e6..4e982892f8 100644 --- a/arch/arm/include/asm/macro.h +++ b/arch/arm/include/asm/macro.h @@ -3,6 +3,7 @@ * include/asm-arm/macro.h * * Copyright (C) 2009 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> + * Copyright 2022 NXP */ #ifndef __ASM_ARM_MACRO_H__ @@ -356,6 +357,45 @@ lr .req x30 .endm #endif +/* + * Select code when configured for LE. + */ +#ifdef CONFIG_CPU_BIG_ENDIAN +#define CPU_LE(code...) +#else +#define CPU_LE(code...) code +#endif + +/* + * Pseudo-ops for PC-relative adr/ldr <reg>, <symbol> where + * <symbol> is within the range +/- 4 GB of the PC. + */ + /* + * @dst: destination register (64 bit wide) + * @sym: name of the symbol + */ + .macro adr_l, dst, sym + adrp \dst, \sym + add \dst, \dst, :lo12:\sym + .endm + + /* + * @dst: destination register (32 or 64 bit wide) + * @sym: name of the symbol + * @tmp: optional 64-bit scratch register to be used if <dst> is a + * 32-bit wide register, in which case it cannot be used to hold + * the address + */ + .macro ldr_l, dst, sym, tmp= + .ifb \tmp + adrp \dst, \sym + ldr \dst, [\dst, :lo12:\sym] + .else + adrp \tmp, \sym + ldr \dst, [\tmp, :lo12:\sym] + .endif + .endm + #endif /* CONFIG_ARM64 */ #endif /* __ASSEMBLY__ */ |