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6 * of this software and associated documentation files (the "Software"), to deal
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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 05/29/14 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"
58 #endif /* __cplusplus */
60 /************************** Constant Definitions ****************************/
62 /**************************** Type Definitions ******************************/
64 /***************** Macros (Inline Functions) Definitions ********************/
66 /* necessary for pre-processor */
67 #define stringify(s) tostring(s)
68 #define tostring(s) #s
70 /* pseudo assembler instructions */
71 #define mfcpsr() ({u32 rval; \
72 __asm__ __volatile__(\
79 #define mtcpsr(v) __asm__ __volatile__(\
84 #define cpsiei() __asm__ __volatile__("cpsie i\n")
85 #define cpsidi() __asm__ __volatile__("cpsid i\n")
87 #define cpsief() __asm__ __volatile__("cpsie f\n")
88 #define cpsidf() __asm__ __volatile__("cpsid f\n")
92 #define mtgpr(rn, v) __asm__ __volatile__(\
93 "mov r" stringify(rn) ", %0 \n"\
97 #define mfgpr(rn) ({u32 rval; \
98 __asm__ __volatile__(\
99 "mov %0,r" stringify(rn) "\n"\
105 /* memory synchronization operations */
107 /* Instruction Synchronization Barrier */
108 #define isb() __asm__ __volatile__ ("isb" : : : "memory")
110 /* Data Synchronization Barrier */
111 #define dsb() __asm__ __volatile__ ("dsb" : : : "memory")
113 /* Data Memory Barrier */
114 #define dmb() __asm__ __volatile__ ("dmb" : : : "memory")
117 /* Memory Operations */
118 #define ldr(adr) ({u32 rval; \
119 __asm__ __volatile__(\
121 : "=r" (rval) : "r" (adr)\
126 #define ldrb(adr) ({u8 rval; \
127 __asm__ __volatile__(\
129 : "=r" (rval) : "r" (adr)\
134 #define str(adr, val) __asm__ __volatile__(\
136 : : "r" (val), "r" (adr)\
139 #define strb(adr, val) __asm__ __volatile__(\
141 : : "r" (val), "r" (adr)\
144 /* Count leading zeroes (clz) */
145 #define clz(arg) ({u8 rval; \
146 __asm__ __volatile__(\
148 : "=r" (rval) : "r" (arg)\
153 /* CP15 operations */
154 #define mtcp(rn, v) __asm__ __volatile__(\
159 #define mfcp(rn) ({u32 rval; \
160 __asm__ __volatile__(\
167 /************************** Variable Definitions ****************************/
169 /************************** Function Prototypes *****************************/
173 #endif /* __cplusplus */
175 #endif /* XPSEUDO_ASM_GCC_H */