1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_METAG_CORE_REG_H_
3 #define __ASM_METAG_CORE_REG_H_
5 #include <asm/metag_regs.h>
7 extern void core_reg_write(int unit, int reg, int thread, unsigned int val);
8 extern unsigned int core_reg_read(int unit, int reg, int thread);
11 * These macros allow direct access from C to any register known to the
12 * assembler. Example candidates are TXTACTCYC, TXIDLECYC, and TXPRIVEXT.
15 #define __core_reg_get(reg) ({ \
16 unsigned int __grvalue; \
17 asm volatile("MOV %0," #reg \
18 : "=r" (__grvalue)); \
22 #define __core_reg_set(reg, value) do { \
23 unsigned int __srvalue = (value); \
24 asm volatile("MOV " #reg ",%0" \
29 #define __core_reg_swap(reg, value) do { \
30 unsigned int __srvalue = (value); \
31 asm volatile("SWAP " #reg ",%0" \
32 : "+r" (__srvalue)); \
33 (value) = __srvalue; \