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#include <stddef.h>
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#include <stdint.h>
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static unsigned char *const uart = (unsigned char*)0x10000000;
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static void putchar(char c) {
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*uart = c;
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}
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static void print(const char * str) {
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while (*str != '\0') {
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putchar(*str);
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str++;
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}
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}
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void main() {
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print("Hello world!\r\n");
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}
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