diff options
Diffstat (limited to 'include/asm-arm/proc-armv/assembler.h')
| -rw-r--r-- | include/asm-arm/proc-armv/assembler.h | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/include/asm-arm/proc-armv/assembler.h b/include/asm-arm/proc-armv/assembler.h index aaec7f9c7..6881898f5 100644 --- a/include/asm-arm/proc-armv/assembler.h +++ b/include/asm-arm/proc-armv/assembler.h @@ -1,10 +1,14 @@ /* - * linux/asm-arm/proc-armv/assembler.h + * linux/asm-arm/proc-armv/assembler.h * - * Copyright (C) 1996-2000 Russell King + * Copyright (C) 1996-2000 Russell King * - * This file contains ARM processor specifics for - * the ARM6 and better processors. + * 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 file contains ARM processor specifics for + * the ARM6 and better processors. */ #define MODE_USR USR_MODE #define MODE_FIQ FIQ_MODE @@ -47,3 +51,24 @@ .macro restore_irqs, oldcpsr msr cpsr_c, \oldcpsr .endm + +/* + * These two are used to save LR/restore PC over a user-based access. + * The old 26-bit architecture requires that we do. On 32-bit + * architecture, we can safely ignore this requirement. + */ + .macro save_lr + .endm + + .macro restore_pc + mov pc, lr + .endm + +#define USER(x...) \ +9999: x; \ + .section __ex_table,"a"; \ + .align 3; \ + .long 9999b,9001f; \ + .previous + + |