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31 ******************************************************************************/
32 /*****************************************************************************/
35 * @file xpseudo_asm_gcc.h
37 * This header file contains macros for using inline assembler code. It is
38 * written specifically for the GNU compiler.
41 * MODIFICATION HISTORY:
43 * Ver Who Date Changes
44 * ----- -------- -------- -----------------------------------------------
45 * 5.00 pkp 05/21/14 First release
48 ******************************************************************************/
50 #ifndef XPSEUDO_ASM_GCC_H /* prevent circular inclusions */
51 #define XPSEUDO_ASM_GCC_H /* by using protection macros */
53 /***************************** Include Files ********************************/
55 #include "xil_types.h"
59 #endif /* __cplusplus */
61 /************************** Constant Definitions ****************************/
63 /**************************** Type Definitions ******************************/
65 /***************** Macros (Inline Functions) Definitions ********************/
67 /* necessary for pre-processor */
68 #define stringify(s) tostring(s)
69 #define tostring(s) #s
71 /* pseudo assembler instructions */
72 #define mfcpsr() ({u32 rval; \
73 asm volatile("mrs %0, DAIF" : "=r" (rval));\
77 #define mtcpsr(v) asm ("msr DAIF, %0" : : "r" (v))
79 #define cpsiei() //__asm__ __volatile__("cpsie i\n")
80 #define cpsidi() //__asm__ __volatile__("cpsid i\n")
82 #define cpsief() //__asm__ __volatile__("cpsie f\n")
83 #define cpsidf() //__asm__ __volatile__("cpsid f\n")
87 #define mtgpr(rn, v) /*__asm__ __volatile__(\
88 "mov r" stringify(rn) ", %0 \n"\
92 #define mfgpr(rn) /*({u32 rval; \
93 __asm__ __volatile__(\
94 "mov %0,r" stringify(rn) "\n"\
100 /* memory synchronization operations */
102 /* Instruction Synchronization Barrier */
103 #define isb() asm ("isb sy")
105 /* Data Synchronization Barrier */
106 #define dsb() asm("dsb sy")
108 /* Data Memory Barrier */
109 #define dmb() asm("dmb sy")
112 /* Memory Operations */
113 #define ldr(adr) ({u32 rval; \
114 __asm__ __volatile__(\
116 : "=r" (rval) : "r" (adr)\
121 #define ldrb(adr) ({u8 rval; \
122 __asm__ __volatile__(\
124 : "=r" (rval) : "r" (adr)\
129 #define str(adr, val) __asm__ __volatile__(\
131 : : "r" (val), "r" (adr)\
134 #define strb(adr, val) __asm__ __volatile__(\
136 : : "r" (val), "r" (adr)\
139 /* Count leading zeroes (clz) */
140 #define clz(arg) ({u8 rval; \
141 __asm__ __volatile__(\
143 : "=r" (rval) : "r" (arg)\
147 #define mtcpdc(reg,val) asm("dc " #reg ",%0" : : "r" (val))
148 #define mtcpic(reg,val) asm("ic " #reg ",%0" : : "r" (val))
150 #define mtcpicall(reg) asm("ic " #reg)
151 #define mtcptlbi(reg) asm("tlbi " #reg)
152 #define mtcpat(reg,val) asm("at " #reg ",%0" : : "r" (val))
153 /* CP15 operations */
154 #define mfcp(reg) ({u32 rval;\
155 asm("mrs %0, " #reg : "=r" (rval));\
159 #define mtcp(reg,val) asm("msr " #reg ",%0" : : "r" (val))
161 /************************** Variable Definitions ****************************/
163 /************************** Function Prototypes *****************************/
167 #endif /* __cplusplus */
169 #endif /* XPSEUDO_ASM_GCC_H */