1819833afSPeter Tyser /* 2819833afSPeter Tyser * (C) Copyright 2004, Psyent Corporation <www.psyent.com> 3819833afSPeter Tyser * Scott McNutt <smcnutt@psyent.com> 4819833afSPeter Tyser * 51a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 6819833afSPeter Tyser */ 7819833afSPeter Tyser #ifndef __ASM_NIOS2_SYSTEM_H_ 8819833afSPeter Tyser #define __ASM_NIOS2_SYSTEM_H_ 9819833afSPeter Tyser 10819833afSPeter Tyser #define local_irq_enable() __asm__ __volatile__ ( \ 11819833afSPeter Tyser "rdctl r8, status\n" \ 12819833afSPeter Tyser "ori r8, r8, 1\n" \ 13819833afSPeter Tyser "wrctl status, r8\n" \ 14819833afSPeter Tyser : : : "r8") 15819833afSPeter Tyser 16819833afSPeter Tyser #define local_irq_disable() __asm__ __volatile__ ( \ 17819833afSPeter Tyser "rdctl r8, status\n" \ 18819833afSPeter Tyser "andi r8, r8, 0xfffe\n" \ 19819833afSPeter Tyser "wrctl status, r8\n" \ 20819833afSPeter Tyser : : : "r8") 21819833afSPeter Tyser 22819833afSPeter Tyser #define local_save_flags(x) __asm__ __volatile__ ( \ 23819833afSPeter Tyser "rdctl r8, status\n" \ 24819833afSPeter Tyser "mov %0, r8\n" \ 25819833afSPeter Tyser : "=r" (x) : : "r8", "memory") 26819833afSPeter Tyser 27819833afSPeter Tyser #define local_irq_restore(x) __asm__ __volatile__ ( \ 28819833afSPeter Tyser "mov r8, %0\n" \ 29819833afSPeter Tyser "wrctl status, r8\n" \ 30819833afSPeter Tyser : : "r" (x) : "r8", "memory") 31819833afSPeter Tyser 32819833afSPeter Tyser /* For spinlocks etc */ 33819833afSPeter Tyser #define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } \ 34819833afSPeter Tyser while (0) 35819833afSPeter Tyser 36819833afSPeter Tyser #define irqs_disabled() \ 37819833afSPeter Tyser ({ \ 38819833afSPeter Tyser unsigned long flags; \ 39819833afSPeter Tyser local_save_flags(flags); \ 40819833afSPeter Tyser ((flags & NIOS2_STATUS_PIE_MSK) == 0x0); \ 41819833afSPeter Tyser }) 42819833afSPeter Tyser 437a6a7d10SThomas Chou /* indirect call to go beyond 256MB limitation of toolchain */ 447a6a7d10SThomas Chou #define nios2_callr(addr) __asm__ __volatile__ ( \ 457a6a7d10SThomas Chou "callr %0" \ 467a6a7d10SThomas Chou : : "r" (addr)) 477a6a7d10SThomas Chou 48*ca844dd8SThomas Chou void display_sysid(void); 49*ca844dd8SThomas Chou 50819833afSPeter Tyser #endif /* __ASM_NIOS2_SYSTEM_H */ 51