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#include <stdint.h>
#if CPUINFO_MOCK
extern uint32_t cpuinfo_arm_fpsid;
extern uint32_t cpuinfo_arm_mvfr0;
extern uint32_t cpuinfo_arm_wcid;
static inline uint32_t read_fpsid(void) {
return cpuinfo_arm_fpsid;
}
static inline uint32_t read_mvfr0(void) {
return cpuinfo_arm_mvfr0;
}
static inline uint32_t read_wcid(void) {
return cpuinfo_arm_wcid;
}
#else
#if !defined(__ARM_ARCH_7A__) && !defined(__ARM_ARCH_8A__) && !(defined(__ARM_ARCH) && (__ARM_ARCH >= 7))
/*
* CoProcessor 10 is inaccessible from user mode since ARMv7,
* and clang refuses to compile inline assembly when targeting ARMv7+
*/
static inline uint32_t read_fpsid(void) {
uint32_t fpsid;
__asm__ __volatile__("MRC p10, 0x7, %[fpsid], cr0, cr0, 0" : [fpsid] "=r" (fpsid));
return fpsid;
}
static inline uint32_t read_mvfr0(void) {
uint32_t mvfr0;
__asm__ __volatile__("MRC p10, 0x7, %[mvfr0], cr7, cr0, 0" : [mvfr0] "=r" (mvfr0));
return mvfr0;
}
#endif
#if !defined(__ARM_ARCH_8A__) && !(defined(__ARM_ARCH) && (__ARM_ARCH >= 8))
/*
* In ARMv8, AArch32 state supports only conceptual coprocessors CP10, CP11, CP14, and CP15.
* AArch64 does not support the concept of coprocessors.
* and clang refuses to compile inline assembly when targeting ARMv8+
*/
static inline uint32_t read_wcid(void) {
uint32_t wcid;
__asm__ __volatile__("MRC p1, 0, %[wcid], c0, c0" : [wcid] "=r" (wcid));
return wcid;
}
#endif
#endif
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