mirror of https://gitee.com/openkylin/qemu.git
60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static inline int mystrlen(char *s) {
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int i = 0;
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while (s[i])
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i++;
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return i;
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}
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void pass(void) {
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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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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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void *memset (void *s, int c, size_t n) {
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char *p = s;
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int i;
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for (i = 0; i < n; i++)
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p[i] = c;
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return p;
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}
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void exit (int status) {
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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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:
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: "r" (callno)
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: "memory" );
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while(1)
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;
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}
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ssize_t write (int fd, const void *buf, size_t count) {
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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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