diff options
| -rw-r--r-- | arch/arm/Kconfig | 3 | ||||
| -rw-r--r-- | arch/arm/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/unified.h | 126 |
3 files changed, 130 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index aef63c8e3d2..da28e7ba608 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -983,6 +983,9 @@ config HZ default AT91_TIMER_HZ if ARCH_AT91 default 100 +config ARM_ASM_UNIFIED + bool + config AEABI bool "Use the ARM EABI to compile the kernel" help diff --git a/arch/arm/Makefile b/arch/arm/Makefile index c877d6df23d..3505572a21e 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -95,7 +95,7 @@ endif # Need -Uarm for gcc < 3.x KBUILD_CFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm -KBUILD_AFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float +KBUILD_AFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float CHECKFLAGS += -D__arm__ diff --git a/arch/arm/include/asm/unified.h b/arch/arm/include/asm/unified.h new file mode 100644 index 00000000000..073e85b9b96 --- /dev/null +++ b/arch/arm/include/asm/unified.h @@ -0,0 +1,126 @@ +/* + * include/asm-arm/unified.h - Unified Assembler Syntax helper macros + * + * Copyright (C) 2008 ARM Limited + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __ASM_UNIFIED_H +#define __ASM_UNIFIED_H + +#if defined(__ASSEMBLY__) && defined(CONFIG_ARM_ASM_UNIFIED) + .syntax unified +#endif + +#ifdef CONFIG_THUMB2_KERNEL + +#if __GNUC__ < 4 +#error Thumb-2 kernel requires gcc >= 4 +#endif + +/* The CPSR bit describing the instruction set (Thumb) */ +#define PSR_ISETSTATE PSR_T_BIT + +#define ARM(x...) +#define THUMB(x...) x +#define W(instr) instr.w +#define BSYM(sym) sym + 1 + +#else /* !CONFIG_THUMB2_KERNEL */ + +/* The CPSR bit describing the instruction set (ARM) */ +#define PSR_ISETSTATE 0 + +#define ARM(x...) x +#define THUMB(x...) +#define W(instr) instr +#define BSYM(sym) sym + +#endif /* CONFIG_THUMB2_KERNEL */ + +#ifndef CONFIG_ARM_ASM_UNIFIED + +/* + * If the unified assembly syntax isn't used (in ARM mode), these + * macros expand to an empty string + */ +#ifdef __ASSEMBLY__ + .macro it, cond + .endm + .macro itt, cond + .endm + .macro ite, cond + .endm + .macro ittt, cond + .endm + .macro itte, cond + .endm + .macro itet, cond + .endm + .macro itee, cond + .endm + .macro itttt, cond + .endm + .macro ittte, cond + .endm + .macro ittet, cond + .endm + .macro ittee, cond + .endm + .macro itett, cond + .endm + .macro itete, cond + .endm + .macro iteet, cond + .endm + .macro iteee, cond + .endm +#else /* !__ASSEMBLY__ */ +__asm__( +" .macro it, cond\n" +" .endm\n" +" .macro itt, cond\n" +" .endm\n" +" .macro ite, cond\n" +" .endm\n" +" .macro ittt, cond\n" +" .endm\n" +" .macro itte, cond\n" +" .endm\n" +" .macro itet, cond\n" +" .endm\n" +" .macro itee, cond\n" +" .endm\n" +" .macro itttt, cond\n" +" .endm\n" +" .macro ittte, cond\n" +" .endm\n" +" .macro ittet, cond\n" +" .endm\n" +" .macro ittee, cond\n" +" .endm\n" +" .macro itett, cond\n" +" .endm\n" +" .macro itete, cond\n" +" .endm\n" +" .macro iteet, cond\n" +" .endm\n" +" .macro iteee, cond\n" +" .endm\n"); +#endif /* __ASSEMBLY__ */ + +#endif /* CONFIG_ARM_ASM_UNIFIED */ + +#endif /* !__ASM_UNIFIED_H */ |