/* armflush.c - flush the instruction cache    __clear_cache is used in tccrun.c,  It is a built-in   intrinsic with gcc.  However tcc in order to compile   itself needs this function */ /* ------------------------------------------------------------- */#if defined __arm__ #ifdef __TINYC__ /* syscall wrapper */unsigned _tccsyscall(unsigned syscall_nr, ...); /* arm-tcc supports only fake asm currently */__asm__(    ".global _tccsyscall\n"    "_tccsyscall:\n"    "push    {r7, lr}\n\t"    "mov     r7, r0\n\t"    "mov     r0, r1\n\t"    "mov     r1, r2\n\t"    "mov     r2, r3\n\t"    "svc     #0\n\t"    "pop     {r7, pc}"    ); /* from unistd.h: */#if defined(__thumb__) || defined(__ARM_EABI__)# define __NR_SYSCALL_BASE      0x0#else# define __NR_SYSCALL_BASE      0x900000#endif#define __ARM_NR_BASE           (__NR_SYSCALL_BASE+0x0f0000)#define __ARM_NR_cacheflush     (__ARM_NR_BASE+2) #define syscall _tccsyscall #else #define _GNU_SOURCE#include <unistd.h>#include <sys/syscall.h>#include <stdio.h> #endif /* Flushing for tccrun */void __clear_cache(void *beginning, void *end){/* __ARM_NR_cacheflush is kernel private and should not be used in user space. * However, there is no ARM asm parser in tcc so we use it for now */    syscall(__ARM_NR_cacheflush, beginning, end, 0);} /* ------------------------------------------------------------- */#elif defined __aarch64__void __clear_cache(void *beg, void *end){    __arm64_clear_cache(beg, end);} /* ------------------------------------------------------------- */#elif defined __riscvvoid __clear_cache(void *beg, void *end){    __riscv64_clear_cache(beg, end);} #endif