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Implement getcwd() for XNU

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This commit is contained in:
Justine Tunney 2021-01-30 08:54:12 -08:00
parent 417797d218
commit 95173645a1
17 changed files with 239 additions and 77 deletions
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24
examples/x86split.c
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@ -11,12 +11,31 @@
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/errfuns.h"
#include "third_party/xed/x86.h"
/**
* @fileoverview x86 instruction length decoder by way of hex pipe.
*/
int fgethex(FILE *f) {
int o, t = -1;
while (!((o = fgetc(f)) & ~0xFF)) {
switch (t) {
case -1:
t = isxdigit(o) ? hextoint(o) : -1;
break;
default:
if (isxdigit(o)) {
return t * 16 + hextoint(o);
}
break;
}
}
if (t >= 0) return einval();
return -1;
}
int main(int argc, char *argv[argc]) {
unsigned c, i, j, l;
enum XedError err;
@ -42,9 +61,8 @@ int main(int argc, char *argv[argc]) {
l = xedd.length;
if (l <= 0 || l > i) abort();
for (j = 0; j < l; ++j) {
if (fputhex(buf[j], stdout) == -1) {
return errno;
}
fputc("0123456789ABCDEF"[(buf[j] & 0xf0) >> 4], stdout);
fputc("0123456789ABCDEF"[(buf[j] & 0x0f) >> 0], stdout);
}
putchar('\n');
memcpy(&buf[0], &buf[l], i -= l);