63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
/*
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* Helper functions for CRIS system tests
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*
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* There is no libc and only a limited set of headers.
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*/
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#include <stddef.h>
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void exit(int status)
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{
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register unsigned int callno asm ("r9") = 1; /* NR_exit */
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asm volatile ("break 13\n"
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: /* no outputs */
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: "r" (callno)
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: "memory");
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while (1) {
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/* do nothing */
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};
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}
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size_t write(int fd, const void *buf, size_t count)
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{
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register unsigned int callno asm ("r9") = 4; /* NR_write */
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register unsigned int r10 asm ("r10") = fd;
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register const void *r11 asm ("r11") = buf;
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register size_t r12 asm ("r12") = count;
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register unsigned int r asm ("r10");
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asm volatile ("break 13\n"
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: "=r" (r)
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: "r" (callno), "0" (r10), "r" (r11), "r" (r12)
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: "memory");
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return r;
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}
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static inline int mystrlen(char *s)
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{
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int i = 0;
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while (s[i]) {
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i++;
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}
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return i;
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}
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void pass(void)
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{
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char s[] = "passed.\n";
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write(1, s, sizeof(s) - 1);
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exit(0);
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}
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void _fail(char *reason)
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{
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char s[] = "\nfailed: ";
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int len = mystrlen(reason);
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write(1, s, sizeof(s) - 1);
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write(1, reason, len);
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write(1, "\n", 1);
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exit(1);
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}
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