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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 * 1.00a ecm/sdm 10/28/09 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 ********************************/
57 #endif /* __cplusplus */
59 /************************** Constant Definitions ****************************/
61 /**************************** Type Definitions ******************************/
63 /***************** Macros (Inline Functions) Definitions ********************/
65 /* necessary for pre-processor */
66 #define stringify(s) tostring(s)
67 #define tostring(s) #s
69 /* pseudo assembler instructions */
70 #define mfcpsr() ({unsigned int rval; \
71 __asm__ __volatile__(\
78 #define mtcpsr(v) __asm__ __volatile__(\
83 #define cpsiei() __asm__ __volatile__("cpsie i\n")
84 #define cpsidi() __asm__ __volatile__("cpsid i\n")
86 #define cpsief() __asm__ __volatile__("cpsie f\n")
87 #define cpsidf() __asm__ __volatile__("cpsid f\n")
91 #define mtgpr(rn, v) __asm__ __volatile__(\
92 "mov r" stringify(rn) ", %0 \n"\
96 #define mfgpr(rn) ({unsigned int rval; \
97 __asm__ __volatile__(\
98 "mov %0,r" stringify(rn) "\n"\
104 /* memory synchronization operations */
106 /* Instruction Synchronization Barrier */
107 #define isb() __asm__ __volatile__ ("isb" : : : "memory")
109 /* Data Synchronization Barrier */
110 #define dsb() __asm__ __volatile__ ("dsb" : : : "memory")
112 /* Data Memory Barrier */
113 #define dmb() __asm__ __volatile__ ("dmb" : : : "memory")
116 /* Memory Operations */
117 #define ldr(adr) ({unsigned long rval; \
118 __asm__ __volatile__(\
120 : "=r" (rval) : "r" (adr)\
125 #define ldrb(adr) ({unsigned char rval; \
126 __asm__ __volatile__(\
128 : "=r" (rval) : "r" (adr)\
133 #define str(adr, val) __asm__ __volatile__(\
135 : : "r" (val), "r" (adr)\
138 #define strb(adr, val) __asm__ __volatile__(\
140 : : "r" (val), "r" (adr)\
143 /* Count leading zeroes (clz) */
144 #define clz(arg) ({unsigned char rval; \
145 __asm__ __volatile__(\
147 : "=r" (rval) : "r" (arg)\
152 /* CP15 operations */
153 #define mtcp(rn, v) __asm__ __volatile__(\
158 #define mfcp(rn) ({unsigned int rval; \
159 __asm__ __volatile__(\
166 /************************** Variable Definitions ****************************/
168 /************************** Function Prototypes *****************************/
172 #endif /* __cplusplus */
174 #endif /* XPSEUDO_ASM_GCC_H */