/* * linux/include/asm-arm/assembler.h * * Copyright (C) 1996-2000 Russell King * * 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 architecture specific defines * for the different processors. * * Do not include any C declarations in this file - it is included by * assembler source. */ #ifndef __ASSEMBLY__ #error "Only include this from assembly code" #endif #include <asm/ptrace.h> #define pull lsl #define push lsr #define get_byte_0 lsr #24 #define get_byte_1 lsr #16 #define get_byte_2 lsr #8 #define get_byte_3 lsl #0 #define put_byte_0 lsl #24 #define put_byte_1 lsl #16 #define put_byte_2 lsl #8 #define put_byte_3 lsl #0 #define PLD(code...) #define MODE_USR USR_MODE #define MODE_FIQ FIQ_MODE #define MODE_IRQ IRQ_MODE #define MODE_SVC SVC_MODE #define DEFAULT_FIQ MODE_FIQ /* * LOADREGS - ldm with PC in register list (eg, ldmfd sp!, {pc}) */ #ifdef __STDC__ #define LOADREGS(cond, base, reglist...)\ ldm##cond base,reglist #else #define LOADREGS(cond, base, reglist...)\ ldm/**/cond base,reglist #endif /* * Build a return instruction for this processor type. */ #define RETINSTR(instr, regs...)\ instr regs /* * Enable and disable interrupts */ .macro disable_irq msr cpsr_c, #PSR_I_BIT | SVC_MODE .endm .macro enable_irq msr cpsr_c, #SVC_MODE .endm /* * Save the current IRQ state and disable IRQs. Note that this macro * assumes FIQs are enabled, and that the processor is in SVC mode. */ .macro save_and_disable_irqs, oldcpsr mrs \oldcpsr, cpsr disable_irq .endm /* * Restore interrupt state previously stored in a register. We don't * guarantee that this will preserve the flags. */ .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